 SurveyWorks is a complete survey program written specifically for land surveyors and college students. Store up to 1500 points, no memory card needed, stake-out points, stake a line, intersect a line, sideshot calculation, traverse calculations, bearing sideshot calculations, bearing traverse calculations, menu-driven, help wizards, inverse by point number, inverse by coordinates, convert azimuth to bearing, view and store points, manually calculate acreage using points, adjust data (rotate or move points), download data (send data to your favorite CAD program) and many other features. |
This file contains equations of the DC motor in simple compact form. It's useful because it is possible to insert values and the program returns the equation of the motor in the variable EQ, for using with Solve or something else.
Solve the AASHTO Flexible Pavement Design Equation, 1993 version. Calculate the Structural Number SN.
Checks and calculates the internal buckling of an I metallic section.
Program for the design of Bocatomas and Desarenadores. (Sanitary)
This program analyzes the future population for a water main design.
Allows you to calculate speed, volume and area from rivers.
Useful for calculating UNA's area unequal section (HYO).
ALBW = Allocated Bandwidth. This is a program for satellite communication engineers and planners. It determines the amount of bandwidth required to accommodate a carrier signal on a satellite transponder, given the data rate, coding, and modulation methods. Version 1.1 incorporates occupied bandwidth.
Un scroll des plans d'une alimentation 220V.
Mooring to the horizontal network of control. Method double base to 90 degrees. For Topography.
Calculate coils wound on iron-powder toroidal cores by Amidon Corp. Program contains a selectable cores database and returns inductance, giving the coil turns, or the required turns, giving the required inductance. Maximum wire coil diameter, in mm, is also returned. Tested on 49G+, but it should be suitable also on 48 series calculators.
Shows the position of the Sun (in degrees of declination and minutes of right ascension) relative to "where it is supposed to be."
Analyzes reinforced concrete.
Calculates the resistance of columns and allows you to find an optimal disposition of steel on the concrete.
The most complete simple pipes program. Contains: Colebrook equation, power, loses in pipes, volume by Darcy-Colebrook method, volume by Hazen-Williams method, Diameter by Darcy-Colebrook method, fluid velocity in loss function and more.
A set of two hydraulic programs, Pipe Modeling 1.4 (drinking water pressure pipe modeling) and Network Modeling 4.2 (drinking water distribution network modeling) to meet professional needs. Includes comprehensive PDF documentation.
User RPL program written to analyze shafts with the Niemann method. Has a friendly interface.
Calculates the area of a polygon after the coordinates of each point are given.
Calculates the area inside given coordinates.
Simple program to calculate and draw an area. You enter the coordinates and it calculates and draws the area.
Formulas needed to solve water hammer problems studied in pipeline hydraulics.
Calculates frames by the CBE method applying the parabolic rectangle method. It might also do something with reinforced concrete.
This program was presented in the X-CONEIC (National Congress of Students of Civil Engineering) in the city of the Cusco-Perú around the 9 through 13 of September of the 2002. The program is highly vector-based and it uses matrix methods for the solution. It solves trusses, cerchas or stable articulated structures are already isostatic, hyperstatic, bi or three-dimensional.
Armaduras is a program that solves isostatics trusses.
Laminate ASD is a program developed for the design of Laminated Elements of Steel in Hot or Soldiers of the type IN-HN, using the code AISC (American Institute of Steel Construction) for the method ASD, to forces of pure Compression, pure Flexion or to the Interaction Flexion-compression.
Calculates the diverse accessions in the different types of area.
User friendly stand-alone circuit simulator based on CSim and Assistant, allowing circuit editing.
Astronomical library. Computes: ephemeris of Sun, Moon, planets, comets and asteroids mean, apparent, geocentric and topocentric coordinates accurate precession and nutation mean elements of major bodies four systems of celestial coordinates for data input conversion between coordinates eclipses of Sun and Moon - Moon phases rise and set of celestial bodies - twilights Jupiter's satellites - equinoxes and solstices elongations, oppositions and conjunctions catalog of 1158 stars and 110 Messier objects ephemeris of variable stars (with TDB) interactive celestial maps - angular separation chronological cycles and date of Easter sidereal time and clock two time scale (TT or UTC and similar) values of deltaT=TT-UT1 (updated 08/2002) various input modes for dates - time zones auto-adjust of internal clock geodetic and UTM coordinates 30 pre-built and 10 user's coordinates nautical point determination with two stars.
This is a small astronomical database of objects in the solar system.
Performs astronomical calculations; could be useful for land surveyors.
Position of the Sun, Moon, 9 major planets+xena. Theories VSOP87B + TOP2010A + corrections from DE422. Date of Easter. Positions of the main satellites of Jupiter, Saturn, Uranus. Comets: Parabolic-Hyperbolic-Elliptic motion. Precession formulae valid +/-200,000 years from J2000. Phases of the Moon.
Provides functions for setting the local time variable, the Dead Reckoning position, Long and Lat and, from these variables, computing the positions, magnitudes, and phases of the stars, planets and moon, and more. Requires 
This small program calculates the weight of a concrete structure given its dimensions.
Design of rectangular or circular uniaxial columns. (Reinforced Concrete)
Calculates forces for the Brazilian Code of Steel and Concrete.
A set of notes with graphics and tools for calculating formulas useful for a second semester electrical engineering student.
Calculates Butterworth and Chevyshev LPF transfer functions.
Calculates stress and deformation of a beam.
An HP 48GX/G+ application for analyzing beams subjected to transverse loading or shafts under combined bending and torsion. The types of problems the program will solve include members with the following: any number of supports, fixed ends or overhangs, nonlinear distributed loads, a variable E, and stepped or continuously varying cross sections. It calculates the reactions and computes shear, bending moment, slope, deflection and shaft max shearing stress at a user-specified number of increments. The user can plot the diagrams, find the max and min values, and display or print any portion of the output. The user's manual is an Adobe PDF document.
Plots bearings found in a surveyor's deed description (i.e. North 20 deg. East).
Structural engineering libraries for concrete calculations. Includes a statics library that calculates shear force, bending moment and displacements of a lot of "standard" beams.
BETHE-BLOCH allows the user to easily define various particles and media, and then quickly calculate a range and energy loss.
A comprehensive set of notes about various topics related to biology. For the S series.
Bj'poligonal is a topography program to calculate and make adjustments on a closed polygon(external or internal angles only). Furthermore, it makes a preliminary sight of the graphic of the polygon. Written mainly in System RPL.
You can designing amplifiers with BJT transistors.
Contains the equations and constants to calculate the emittance from a blackbody, i.e., evaluating Planck's equation. The program stored in BBOD allows integration of W (emittance, in either watts or photons per second per square centimeter) over a wavelength band or at a single wavelength. dW/dT can also be integrated. The routine stored in PLOT plots both the watts and the photons/sec curves on the same frame.
Helps with the design of pumps, especially useful for the last subject of Hydraulics I (Pipe Hydraulics).
A simple periodic table showing symbols, names, numbers, and weights.
HVAC duct sizing and analysis. Accommodates round and rectangular duct sizes and variations in roughness, air density, and dynamic viscosity. Uses DARCY function. Works on all 48 and 49 models.
Some documentation about commercial air transport and airplane design. It contents explanations and formulas.
Calculates full wire installations for houses following Spanish regulations. Requires the 
Another hydraulics program, for calculating pipes with Moody's diagram.
User RPL program written to quickly and easily calculate hydraulic nets with pipes and pumps.
Perform calculations for Rankine Cycle in Steam Turbines (English-Spanish). Include documentation file in .pdf format.
Program for circular channels, designed for a course in fluid mechanics in the mechanical engineering program of UNMSM University in Lima, Peru.
Residential electric channelings program which works with AWG.
Program to calculate the lifting capacity of grounds in superficial layings of foundations using the equations of Terzaghi.
A program to calculate CBR, the California Bearing Ratio, for roadway engineering.
Cartography program.
Given inputs for a beam (moment, type of steel, and more), calculates Km, md1, md2, Kml, Fyk, Fcd, Kzl, Kyl, eyd, Fyd, ecd, Es, D1, D, and D2.
A program to solve fluid mechanics problems. This program can calculate the pressure loss produced by pipes and accesories. Also, it can solve problems with two pipes in series and connected by a union or a pump. In this last case, the program calculates the power of the pump.
Design of sewage systems, according to norms of the CDMB. (Sanitary)
Tools for celestial navigation and dead reckoning. These programs were prepared primarily for the operator of a small ship (sailboat or powered yacht, with magnetic compass) not routinely using celestial navigation. Using these programs, one can take a round of sextant sights, and enter the necessary ephemeris data, without overlooking any necessary input.
Computes a position fix from observations of any number of celestial bodies using a least squares fit to the altitude of the bodies as a function of time. The routine does all the standard corrections for dip, refraction, parallax etc. as well as correcting for motion of the observer between sights.
This program allow calculates for Centrifugal Pumps : Pump Performance, Total Head, Suction Eye Velocity, Peripheral Velocity, Velocity Head, Water Horsepower, Brake Horsepower, Torque, Specific Speed, Suction Specific Speed, Temperature Raise and Net Positive Suction Head Available (N.P.S.H.A.).
This program performs calculations for centrifugal and reciprocating gas compressors. Includes documentation in PDF format.
Allows one to completely analyze an armature with matrix methods. Calculates the internal forces, displacements and reactions in the supports.
Program to solve segments. (Structures)
Calculates all elements of the transverse section of any road.
Chem48G has periodic table information and some chemical calculations.
A powerful chemical equation balancer which is written mostly in assembly language. It can balance a chemical equation in seconds regardless of the complexity of the equation.
ChemLab 2.0 is a graphical periodic table of elements with element symbols and a fast property browser with 22 properties. This older version is included because it takes less memory than the latest version.
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ChemLab 2.7 is a graphical periodic table of elements with element symbols and a fast property browser with 22 properties. Also has a formula balancer and molecular weight calculator.
System RPL periodic table of elements.
When given the wished parameters of the Chopper (type A or type B), this power electronics program gives the design values.
CIA Map Viewer. Map size 2735 x 1386. (takes a lot of RAM)
Sky watching program designed to help observe the planets.
Solve Applied Kinetic Chemistry problems.
Program for making corrections with metallic metric tape.
Makes DC, AC and transient simulations and supplies the user with all matrices used.
Makes punctual DC and AC simulations, and plots AC and transient analysis. Supplies the user with all matrices used. Version 3.0 includes the CSim Descriptor and other interface improvements. For people familiar with past versions of CSim only.
Library designed to simulate resistive circuits of DC with a very friendly environment. It's also able of calculating the Thevenin equivalent circuit between any two given nodes.
Cirk is a circuit simulator (node voltage as output), it can use symbolic elements; for instance, suppose there is a resistor between two nodes, you can assign symbol R as resistivity. Circuit analysis is made in S domain (Laplace transform).
Contains a database with latitude, longitude, and elevation of over 1000 western US cities, plus it has the ability to calculate distance and approximate travel time between the cities.
Calculates the saturation curve of magnetic materials.
Resistor color code program.
This program finds the factor of friction "f" in closed pipes to pressure using the Colebrook-White formulas and Newton-Raphson numeric method.
Concrete design program.
Choose a type of column and see the dimensions for the center and corner and things like that.
Program for uniaxial columns.
This program does the combination of diameters of steel for the matter of Concrete, it is possible to select 2 diameters, also the program includes table that generates the table of combinations of 2 diameters.
This program analyzes and designs beams of reinforced concrete by the elastic method and the breakage method.
Calculates, from the bending moment acting on the section, the area of positive steel that should be placed. The values necessary to define the domain boundaries (2,3 and 4) are also provided.
Helps in the design of girders according to the ACI code. Written in 98% User RPL and 2% System RPL.
Program for calculation of voltage drop and conductor gauge given source, amps, distance run.
Calculates the site and excess neutral pressure using a numeric method.
Makes a table with Ue (excess neutral pressure) and calculates the site using a numerical method. The output is best viewed using Lupa.
Graphical delta-star program. Written in User RPL.
Contains two programs: Cros, which calculates the necessary moments for the analysis of a structure by the cross method; and Crosintr, which calculates the reaction moments at bar ends in a non-translational knot structure using the Hardy-Cross method. Performs and displays the intermediate steps.
Calculates the complete cycles of the Cross method to find the final values of the points in beams or porches. Shows the values in a step-by-step table.
Program for the determination of moments, by the Cross method. Civil Engineering-CIV205 useful.
Excellent programs for calculating simple and compound curves.
Calculates the design of mixtures for ACI-211.
This program calculates the diameter, masic flow, Q, pressure, and enthalpy difference between two points in a pipe WITHOUT accessories. Future version for accessories coming.
DeltaStar is a library composed by two simple programs to manage conversion from Triangle to Star and vice versa in electrical problems.
Graphs the moment and sharp diagrams of continuous beams, calculates any values of the beam. (Structures)
Calculates and draws the shear and moment diagrams of reinforced concrete beams by performing a respective design check.
This is a program for make a mass diagram from the progressives and the cut, fill and cut-fill areas in each X-section of the alignment. Requires 
Allows anyone with a telescope equipped with an equatorial mount and setting circles to point and view without any polar alignment. The need for polar alignment is eliminated by a unique system which relies on 2 guide stars.
Digitician is a combination of two programs that, used together can make life much easier for anyone who must deal with digital logic problems. The first program performs reductions of Karnaugh maps by Quine-McCluskey's method (modified). The second gives a truth table from any type of Boolean expression.
This User RPL program calculates the necessary amount of reinforcement for a rectangular reinforced concrete section under combined compression and bending internal efforts. There are two possibilities of positioning the steel bars: along the lateral sides or the upper and lower sides. The Brazilian code NB-1/78 prescriptions are respected.
Library with theory and solved problems in dynamics. Requires 
This program calculates the matrix of rigidity for beams. Calculates pressure of contact in Hertz tension in columns and pressure in pools.
All about roads design.
This will help in calculating and designing superficial foundations with the formulas given in the "reglamento de construcciones del distrito federal" in the "normas tecnicas complementarias" section, to use in foundations built in Mexico City.
This program allows you to check the design of simple, double and T types of reinforced concrete beams.
Helps designs of reinforced concrete.
Program to simplify calculations of a power BJT heat-sink.
Calculates the distribution of forces under a rectangular "cimentacion".
Structural analysis of multi-span continuous beams (n>=2) by the Hardy Cross Moment Distribution method. Point loads are allowed. Calculates joint moments, maximum span moments and their locations, support reactions and shear forces.
Ditub is an excellent program for piping design for simple, parallel and series pipe systems. In the three types of problems you can calculate the caudal, diameter, power required, and friction factor (f). The program has a setup option to set view iterations, sound on/off and desired number of decimals.
The Genetic Code - a Codon Table. Converts strings: DNA to DNA or RNA, RNA to DNA or RNA, RNA to Amino Acid Sequence 1 character notation, and Amino Acid Sequence 1 character to 3 character notation, and vice versa.
Set of check and design routines at SLS and ULS for sections subjected to bending movement, axial force, and shear.
Eclipse calculates and animates solar and lunar eclipses.
Determines the Effective Length Factor (K), which is necessary for members under compression loads, like columns.
Solves concrete beams with the formulas given in the "EHE instrucción española de hormigón estructural" and the older EH-91. The program flecha also calculates the deflection of a concrete beam given in the same "EHE" code. Now with "cortante" for EHE code.
Analysis of any reinforced concrete section. Calculates shear, moment, deflection, torsion, point charge, and concrete joints, among others. Includes full documentation in Word format.
Program that calculates the resistors of a automatic polarization circuit, given some parameters of a transistor and calculates also the three basic amplifiers with a TBJ to small signals. Without documentation, yet.
Calculates points on an ellipsoid, for approximating the shape of the earth.
Structural beams analysis library. For the 48GX and 48G+ only.
This program permits the user to connect tubes in a well for supercritical regimen (whatever that means).
Calculates the embedding points of an element submitted to different types of load.
Calculates the active or passive stresses in any soil situation, with or without water, and with or without loads.
Computes ephemeris of the sun, planets, the moon, stars, Messier objects, comets, and asteroids. Program allows all kind of coordinates, and also gives distance, magnitude, apparent diameter, phase and rising/transit/setting times. Includes version 2.13 for the 49G/49G+/50G, 1.33 for the 48S/SX and 48G/G+/GX, and full PDF documentation.
This library is intended to provide the user with various ephemeris-generating routines, particularly in the calculation of planetary, solar, and lunar positions, and in the estimation of eclipse parameters. Most of the routines used may be found in Duffet-Smith (see the bibliography), although the iterative solution for Kepler's equation is found on pages 85-87 of the AE Roy reference, and none of the routines claim to be speedy or efficient -- mostly due to repeated calculations of positions with no saving of previous results. They have been tested against the examples provided in the sources and match with a reasonable amount of error (probably due to round-off in the examples). Planetary longitudes have been checked against the Menzel and Duffet-Smith sources at random, and are within a degree. A level of familiarity with astronomy and orbital mechanics is assumed.
Calculates the possible error when making measurements with a metric measuring tape.
Useful and fast program to calculate efforts of a soil mass to different depths and loads. Contains five methods including Newmark.
Calculates forces in reinforced concrete beams.
This program calculates stress in the soil.
Converts star to triangle and vice versa.
External ballistics program. This is a projectile motion problem with air resistance included, and it is a nasty bugger (mathematically speaking).
Empirical formulas for the calculation of the coefficient f (pipe hydraulics).
A right triangle solver. Given any two sides, can return the pitch and the other side. Given the pitch and one side can return the other two. Works in decimal feet. Pitch expressed in inches rise per one foot of travel. Numbers entered in Feet.In16 mode. Handy display program shows lengths in Feet'-In f/16" in the status line.
Useful to use with the program of the method of Cross 2, it calculates the factors of distribution in the supports and knots of structures in 2 dimensions.
This program calculates all the voltages, currents and power flow of an electrical high voltage net in fault conditions, in any electrical type of fault or combined fault.
Software to determine the feedback gain in a multi feedback systems by "Método de DESVANECIMIENTO". It's designed in User RPL and helpfull for students in Electrónica II at Universidad Central de Venezuela in Caracas, Venezuela.
The premier structural analysis software for both the 48G and 49/50 series calculators. Its ease of use, flexibility, power and capabilities combined in one package are not seen in any other program available, either commercially or as freeware. FEM48/49 solves frames, trusses and continuous beams. Includes wizards for geometry, sections and loads. Links to SED48/49 database. An extensive manual is included. Completely written in SysRPL. SR6 has been adapted for the larger screen of the 49g+ and 50g.
Verifies the limit states of cracking in reinforced concrete beams.
Notes for a Spanish civil engineering course at the ETSI de Caminos de Granada. Has notes and exercises on ferrocarriles.
This program finds the dc operating point (Vgsq and Icq) for an N-Channel FET using Shockley's equation.
Performs calculations for JFETs involving Gate-Source Voltage (VGS) and Drain Current (ID).
When measuring the area of a field, using a compass to take the bearing (from North) between consecutive points, and measuring the lengths between each point, this program calculates the area and determines a percentage of inaccuracy of the measurements. Originally used for calculating farm plot areas in Ethiopia for research by Michigan State University. Includes the original PDF paper describing the work.
This program generates the capacitor values and inductances for an nth order Butterworth filter.
Filter design program.
Allows FIR filter design using the window method and the frequency sampling method. Has freqz and plot commands. For the G series only.
Firework is a library of utilities to work with chemistry, particularly with combustion (opposed jet flows).
New and improved version of Flashcam, useful for chemical engineering students. Gives the fractional composition of the outflow of liquid and steam from a flash system. Also includes a version (2.X) intended for use with 
Flow data and pressure drop calculus of liquid, gas and steam for valves and fittings (with cv factors) used in the oil and other industries.
Aerial photogrammetry flight map program to facilitate aerial mapping project estimation. All parameters can be altered for various Length and Width of project, Focal lengths, Photo scale, Forward and Side lap etc. 2 libraries included for both the 48GX and the 49G+. Documentation in PDF format (1 page w/attachments).
This User RPL program checks a rectangular reinforced concrete section under combined tension (or compression) and bending internal efforts, as in columns design. The output is the maximum bending moment supported for a given tension (or compression) force as input. The Brazilian code NB-1/78 prescriptions are respected.
Calculates square footings using reinforced concrete.
Perform calculations for forces and acceleration of three types of pumping motion (Beam Pumping Unit), used in the oil industries. Include documentation file in PDF format
Good program to calculate all of the elements of photogrammetry design. It includes flight planning, deformation by relief, etc.
Performs crystallographic 2D forward and inverse Fourier transforms and map plotting.
Calculates, designs and verifies blocks of reinforced concrete for foundations that are rigid or flexible according to the criteria in ACI 318/63 and NB codes.
Performs fault calculations using the matrix of bar impedance (Z) for power systems.
Allows you to calculate forces on surfaces under hydrostatic pressure.
FUMO contains functions allowing digital signal processing. It allows sampling typical or user defined signals, applying window functions, applying FFT (or DFT) transform, convolve, zero-pad, and get frequency, phase or group delay responses. Documentation also in Polish.
Calculates reactions and moments in supports of continuous beams of different lights with the possibility of overhangs and embedding.
Performs calculations for the inside of gas wells, including Density Gas-Liquid Mixture, Erosional Velocity, Ascensional Velocity, Hydrostatic Column Pressure, Pressure Drop and Flow Reservoir Pressure. Include description in PDF format.
Performs calculations on geodetics; could be useful for land surveyors.
This Program can change the coordinates UTM to Geographical or geographical to UTM. From Coquimbo, Chile University of La Serena.
Solves problems in conversions of Geodetic Systems, coordinates, etc, with the following routines: GNormal (calculates the Great Normal (N) and the Radius of the Meridian Section (M), for the desired reference system); φλh→XYZ (converts geodesic coordinates to Cartesian coordinates of the same reference ellipsoid); XYZ→φλh (converts Cartesian coordinates to geodetic coordinates of a same reference ellipsoid); Molodenski (converts the geodetic coordinates from one reference system to another); and SAUX (lists containing the parameters of the main ellipsoids used in Brazil, but which can be changed for other regions).
System RPL program for stress analysis in rocks mechanics (plain stress or 3-dimensional stress), specially designed for mining engineering and solid mechanics. With GeoMech it is possible to find the principal stresses in 3 dimensions and its orientation in spherical coordinates. Moreover, this program has a module for obtaining deformations from assays of strain rosettes. User's Guide in Spanish, info and commands in English.
Geometry programs useful to surveyors, including triangular geometry analysis, area calculation with Simpson's rule or the trapezoid rule, general area property analysis, area properties for a circular segment, volume enclosed by a circular segment and a sloping plane, volume of a cone or sphere, surface area of a cone or sphere, and circle inscribed in a triangle.
Industrial engineering program which calculates rotations with quaternions for mechanics.
A directory of equations useful for electronic circuit calculations, for use with the built-in solver.
Works with the design of biaxial columns by the Gowens method, for reinforced concrete.
GPSurvey is a series of programs created for the 50g calculator that can be used with other HP 49 series calculators, and the 48GX. The program is written as an aid to help perform preliminary site surveys for existing and proposed pipe line and access road alignments. This program is most useful when used to determine positions, lengths and in some cases elevations (at considerable elevation changes) of civil infrastructure within a large area or along a long alignment. The accuracy of the results depends considerably on the GPS receiver used.
Makes the degrees of freedom for a chemical process, of many unities, with a graphical menu, reducing the time taken and increasing the precision of the task. Based on Table 6.1 of Seader's book. Designed for an engineering process class.
Calculates the accrued held percentages and percentages that happen upon making a grain. Includes graphic traces.
Hardy cross program to calculating the flow through a system of net pipes using Hazen-William formulas.
Hydraulics program for calculating the real flow that goes through a system of net pipes by the Hardy-Cross method and Hazzen-William formulas.
Performs calculations for heat loss or gain by an insulated pipe. Includes documentation in PDF format.
Diagram of a helical gear and equations for solving variables to find more information about the gear.
Performs area calculation on triangles based on the formula of the same name. Also calculates the heights, bisections, intersections and angles. Only for the 48GX.
An extended RF network design and analysis tool, written for RF education purposes at the Fachhochschule für Technik in Mannheim, Germany, Department of Telecommunications Engineering, and intended for use in education and ham radio applications.
Software of Hydraulics of Channels for the 49G calculators. Directory of programs in Spanish dedicated to the analysis and design of channels of varied sections: trapezoidal, circular, parabolic, etc., hydraulic profile, hydraulic projection. Includes the powerful HSOLV and 40-page PDF documentation with application examples.
Open channel flow analysis for simple cross sections with known characteristics use HICAB to plug in the data you know and solve for that you need: Froude's number; Energy conservation; Specific force conservation and Manning's equation.
Records all the most important formulas for the first subjects of pipeline hydraulics: empirical equations, circular crowns, etc.
Contains two programs for hydraulics, including Hardy Cross and losses.
This program calculates specific energy, specific force, geometric elements, and other things for any type of section in a channel.
Calculates the correlation of a group of values.
Program to calculate the iterations in a hydraulic parallel pipe system, calculates values of friction, Reynolds and lost of energy.
Good program for flow analysis in rectangular, trapezoidal and circular channels. It allows one to also solve the critical flow depending on geometry.
Concrete program to solve the armors in beams of direct section, according to the Norma EHE. When beginning it is a little slow. But it gives us the traction armor, that of only compression if it is necessary, the mechanical minima and the geometric minima and the moment limit of I calculate.
Designs beams in reinforced concrete given the shear and moment.
This is Hewlett Packard's own periodic table of elements library for the 48G series.
HP-Shok has five shock tables: Normal Shock Table, Rayleigh-Line Flow Table, Prandtl-Meyer Functions Table, Isentropic Flow Table, and Fanno-Line Flow Table.
An AC spice type circuit simulator. The program is limited to AC analysis, but by selecting a very low frequency (not 0) it can give a reasonable DC approximation.
HPlanetarium is a free (GPL) planetarium for the HP 39/40/48G/49/50 in which you can move, zoom and unzoom the sky map "in real time". Equatorial/azimutal coordinates, rise/transit/set times, elongation, magnitude and diameter can be computed for main planets. You can also point a Meade telescope, and there is an ephemeris generator. Source code for the HP 49 is provided. A light version (only 24 KB) is available for the HP 48G.
HPRASP is a model rocket altitude simulation program for the HP 48 calculator.
Programs developed for Hydraulics and Hydrology courses with preset data for Mexico; could be useful for students studying the same subject.
Given parameters of a filter, H, wc and Q, calculates an inverting active filter using an ideal OPAMP. Can draw the circuit. Document in English but menus in Spanish.
Displays a map of the earth showing a shadow to show where the sun's light shines.
Calculates third order intermodulation products in frequency processing devices. It was developed with satellite communications in mind, for the purpose of identifying overdriven earth stations, based on observed intermodulation products in a satellite transponder. The program has general application where 3rd order intermodulation products need to be calculated.
Performs calculations for problems found in Chapter 7.5 of the Grainger/Stevenson Power System Analysis book.
This program returns all the parameters (scalars and phasors) of the Induction Machine equivalent circuit, given the data obtained from the No-Load and Blocked Rotor Tests. A explanation figure is included in this package. This program can be used to obtain the transformer parameters (No-Load == Open Circuit Test // Blocked Rotor == Short-Circuit Test). Recommended for Electric Machinery and equivalent courses.
Calculates moments of inertia, center of gravity and area of flat sections formed by rectangles, right triangles, circles and quarter-circles. Also supports coordinate-oriented input and language setup.
Inercia calculates all the physical data (area, center of gravity and moments of inertia) of a piece included between a function, or straight, parabolic, exponential etc. and the axes of coordinates or among another function with the same characteristics.
This program calculates the momentum (inertia) of rectangular thin walled shape sections. What makes it different from the other apps is that as the application is so specific, the user entry is rather faster than in any general purpose app.
Calculates moments of inertia.
Calculates the value of XG, YG, IG and the area of numerous plain bodies.
Hundreds of formulas and other information useful to civil engineering students. Requires 
Simple program made with User RPL, that calculates diameter, Qmax.extr., Qmin., Qmed., Coefficient M, Qmax. inst. Follows Mexican norms.
Gives the electron configuration of an element. Written in System RPL.
This is a program (library for the 49G and directory for the 48) that calculates hydraulic (by the modified Hunter method) and electric installations for residences and buildings. It's useful for architects, engineers and constructors, particularly in Latin America.
Application for estimating important factors in Shell-and-Tube Heat Exchangers design for chemical and mechanical engineers.
"Operation research" notes, probably for cheating on tests. Requires 
This is a library which evaluates the Jacobian, to help people with the Newton-Raphson Method, and derive N equations below N variables, useful in electrical engineering.
A stand-alone program for reducing leveling notes, this is ripped and adapted from my 5.35 pack of surveying programs. Possibly useful to land surveyors.
Solves common land surveying problems. This old version is included because it can run on the S series.
Complete program suite for the HP-48GX with many solutions useful in land surveying. This set of programs solves for many common problems encountered in land surveying. It has an engineering flavor and deals with things in construction, especially roadways. Geared to roadway construction, this is one of the only shareware programs to include spirals. Latest features to include are the addition E N format and a tiny plot function. Does not work on the 48SX.
This is a stand-alone traverse program which allows you to make revisions. It also provides misclosure and compass rule information. Good for doing "what-if?". May be of interest to land surveyors.
Chemistry program which gives the electron configuration.
This is a chemistry program. It can calculate and plot pH.
You can design amplifiers with JFET transistors.
JMOON2 allows you to view present, past and future positions of Jupiter's most commonly known moons (Callisto, Europa, Io, Ganymede).
Solves structures by the Kani method.
Structural analysis software with powerful features. Includes static analysis of plane structures including grid structures (it can solve any plane structure with any load condition), load cases (it supports infinite load cases), complete and accurate results (it reports all data analysis), practical data input (it has a simple way for codifying the structure), customizable (it has adjustable options), solution by matrix method (it uses the matrix stiffness method), and
small code size.
Calculates the area of contact with the air of a heat dissipator.
A small program used to eliminate any node in a matrix of admittances by the method of Kron for the 48SX/48GX.
Calculates forces of compression and traction for the Brazilian Code of Steel and Concrete.
Structural analysis program for 2D and 3D, for armaduras and marcos, with a good interface. Includes libraries of materials, sections, and a great variety of loads. Excellent for students and professionals in civil engineering. Tested on both the 48G series and the 49g+.
Calculates the compressibility factor with the tables of Lee and Kesler for thermodynamics. Only for the G series.
The first complete stand-alone leveling program ever written! For all survey professionals.
Equation library of ten mechanical engineering equations.
Classic physics equation library.
Electrical physics equation library.
Modern physics equation library.
Mechanical physics equation library.
Controls a Sokkia Total Station, takes data from it, and helps surveyors and engineers to easily put points into reality to make foundations, pointing trees, aligning buildings and other things.
I think this is a field library for calculating contours.
LIMP calculates the positive and zero sequence impedances of bare three phase lines which have one conductor per phase and up to two guard or neutral conductors.
This program performs calculations on the water pipes between the "desarenador" and the tank.
Calculates geometric properties of built compound figures with simple figures using Steiner's theorem of the parallel axes.
Program for the analysis of influence lines for beams of two lights. Allows one to choose an interval between points and to calculate specific points on the beam, and shows a diagram of the lines.
This program calculates the diameter of optimal conductors for transmission lines. Includes the table of conductors. For the 48GX or 49G.
This program generates the Linus Pauling Electron distribution of a given atomic number, and displays the result in the screen. It was written in machine language, i.i, its VERY fast and small.
This is a library for the slab structural design with reinforced concrete (losas in Spanish)according to ACI method 3. The program uses a matrix with coefficients to find out if the section is safe and the steel areas needed.
Calculates the inductive and capacitive reactance for transmission lines.
Mandeleiv is a periodic table library for the GX.
Given a location in latitude and longitude, the position will be displayed on a map representing the world.
Comprehensive collection of astronomy and calendar functions: position, rise, culmination and set time and location for sun, moon and all planets, moon phases, calendar, holy days, Julian day, all coordinate and time conversions, general rise and set time, daylight saving time switch, great circle distance.
Impedance matching networks design with L-Sections and Single-Stubs. No Smith Chart needed.
Determines the stiffness matrices of elements of a given structure.
Generates and manipulates stiffness matrices of 2D structures with a friendly environment.
Calculates the rigidity matrix.
Useful for working in the rigidity system.
Hydraulics of Open Channels software for the 48G/49G series calculators (Completely written in System RPL).
Allows the design of digital filters (IIR lowpass and highpass, FIR, differentiator, Hilbert transformer) and to plot the frequency domain (magnitude and phase) and time domain (impulse and step) responses of the designed filter or any other digital transfer function.
Calculates the tensions at any point in the soil with or without the presence of water.
This is a complete version for calculations (mechanical and electrical) of centrifugal pumps used in all industries. Includes documentation in PDF format.
Useful for mechanical technicians and/or engineers who need to calculate which brushless motor and which speed reducer are needed to give motion to linear belted drive units.
Converts matrix for electric circuits, two-door circuit theory, useful in electrical engineering.
Topography program. "Resolución de los métodos de intersección directa e inversa."
Good program to calculate viscosity, caudal, energies, loss in pipes and more, all as the Equation Library of the HP.
Calculates the date of services and shows graphics. It's good to follow a project that has more or less 400 services. The program can to follow services with percent executed and calculates the new dates.
Provides both numerical and graphical solutions to Mohr's stress circle for material resistance.
Allows you to calculate inertia moment in beams.
An upgrade of the program Moon 2.0 to revision 3.0. Several subroutines have been added, including the ability to calculate the moon phase now for any day/time (from 1582-10-15 to the future). It is also now multilingual.
Displays calendars that show the phase of the moon.
General land survey program for the HP 48 and HP 49.
Simulates a four cylinder, four stroke engine, showing sparks and valve operations at the right times. Configurable speed (enter a delay, typically between 0 and 1, as a parameter when running it).
Given a date, displays the phase of the moon on that date.
Library containing mathematical applications and heat transfer programs.
Program to predetermine the proportions of retaining walls and calculate the safety factors for the retaining, sliding, and lifting capacity.
Microwave amplifier design.
Program based on Tyko for a calendar, clock, and astronomy information. This program does time changes both in the Julian Calendar and the Gregorian Calendar dates, later than March 1st 4712 BC or later than Julian day 98 in the Gregorian calendar or Julian day 60 in the Julian calendar. Also gives data about the sun including the ecliptical, equatorial and horizon coordinates, rising and setting times, Sun's geocentric distance, semi diameter, ephemeris transit time, obliquity of the ecliptic, nutation in longitude and nutation in obliquity.
This is another modified version of the 
Astronomical navigation program for the HP 48.
Program for topographic leveling, both simple and compound.
NFAP calculates the voltages of an AC Electronics Circuit using discrete components.
Given filter parameters, H, wc and Q, calculates some non inverting active filters, including some biquad forms. Can draw the circuit. Documentation in English and menus in Spanish.
Known cases of civil engineering program.
Program for working with columns.
Library designed for typical problems general physics. When given the position and initial speed, it returns the two angles, and when given the position and angle it returns the initial speed.
Paral will find all combinations of parallel 1% resistors to obtain the desired value within a given accuracy. This is useful in case you don't have the value you need on hand, but also because the exact value you want may not be a standard off-the-shelf value.
This program finds parallel resistance elements and is useful for both electronics technicians and hobbyists.
Calculates and draws the hydraulic profile, by the method of the direct step. (Hydraulics)
Calculates the hydraulic profile, by the method of the standard step. (Hydraulics)
Program to calculate transitions of peralte.
This program calculates the table of Peralte and (Sobreancho) of a horizontal curve.
Calculation of loss in pipes.
Calculates loss in pipes by the Hazen-Williams or Darcy-Weisbach method.
Calculates the area, center of gravity, and inertia of a steel laminated "perfil".
A poor-man's periodic table library. Given either the atomic symbol or the atomic number of any element, outputs the atomic number, full name, atomic symbol, and atomic weight.
Graphic periodic table with lookup. For the S series only.
Periodic table of elements with balance, molecular weight, properties, graphics and more. For the GX only. Very powerful, but also a bit slow.
Compact periodic table library written entirely in System RPL.
Uses Petri nets to simulate sequences, search for P-invariants and T-invariants, coverability tree, and more. Useful for industrial engineering students.
Calculates the date and time of moon phases.
Simple program for calculating digital control matrices, as described in the book Franklin, Powell, Workman, DIGITAL CONTROL OF DYNAMIC SYSTEMS 2nd ed.
Calculates typical photenot problems.
Performs calculations on photogrammetry; could be useful for land surveyors.
A comprehensive set of notes about various topics related to physics. For the S series.
Solves plates (placas) by the Navier method. Written in User RPL.
This program calculates the positions of the planets in the sky.
A comfortable information program presenting the basic physical and geometrical data on the planetary system. Updated with the latest data (November 2000).
Set of programs useful for surveyors, including PLINE 1.2 (Profile Line), which calculates elevations along three types of profile lines, XLINE 1.6 (Line with Extended Capabilities), for calculating a straight line between two points a specified distance from each other and of specified heights or elevations, and TRAV 6.0, which calculates coordinates for structure layout and checking reference staking, making it easier to coordinate key structural elements and 'RP' staking for cross-tie checks, transit angle checks and other checks. Includes comprehensive documentation in Word format.
Calculates the future population. Useful for calculating the amount of water needed in the future.
Helps transform the parameters of ports in electricity and electronics.
This program allows one to completely analyze a structure by matrix methods. It calculates the internal forces, displacements and reactions in the supports.
Solve two-dimensional structures.
Positive Displacement Reciprocating Pumps Calculus for Liquids Fluids of the Oil Industry. Documentation in PDF format.
Calculate Electrical power flow with Newton-Raphson or Gauss-Seidel way. Solve non-linear equation system. Calculate Economica Dispatch with loss, and Heat rate curves.
Pothenot is a program for Topography II. Calculates distances and angles.
This is a set of programs to calculate the friction losses in pressure pipes for Newtonian Fluids. PPipe is a set of programs created for the HP 48GX that can be used in the HP 49 series calculators, including the HP 50G. I wrote the program as an aid to help me check the results of more sophisticated pump station software and other pressurized fluid applications (mainly for Newtonian fluids, with less than 3% solids). Due to the complex nature of pump station design, the programs herein are intended as an aid to check calculations; they are not intended to be used directly for design.
Giving the description of any stratum configuration of a soil mass, like thickness, volumetric weight and water level, the program will calculate the pore, effective and total pressure, at any depth, and will plot it.
Contains several programs to display a chemical formula in pretty print format. Includes source code.
Five programs useful to civil engineers, including topography, economical engineering, heavy machines, sanitary engineering, and stagnation curves calculations.
This program is to elaborate the Gantt Diagram and a calculation table to get the diagram. Also includes full documentation with an example. It also has an option to change the language of the program between English and Spanish.
Handbook that serves to consult the types of concrete already they are simple, armed, or of mortars.
Displays 24 typical cases of beams (brace, bisupported, support-interlocked and biembedded). For each case the values of the reactions, turns of the extreme sections, and a diagram are shown, and more.
Psychro is a program for doing psychrometric calculations. Both SI and English units are supported, in a manner consistent with the HP 48 Equation Library.
Zip file contains 3 different programs that compute psychrometric data (enthalpy, specific volume, sat'n pressure, etc.) of moist air. DBRH requires dry-bulb temp, RH%, and local pressure. DBWB requires dry-bulb temp, wet-bulb temp, and local pressure. Both programs work with SI or English units. MIXTURE is a 3rd program to provide psychrometric data for adiabatic mixing of two airstreams into one.
Much faster and smaller, completely rewritten version of HP's periodic table library.
PTOE is a periodic table of elements with properties and a molecular calculator.
Solves many problems in undergraduate modern physics. Includes semi-empirical mass function, LS coupling, various energy/frequency conversions, Hartree theory, Paschen-Bach effect, etc. Also includes functions for set operations (used internally, made available). For the G series only.
This program is very useful for those who work with electronics. It converts color codes of resistors into their numerical value and vice versa. It's very easy to use.
This program allows you to calculate the real flow of a closed net pipes sistem using Hazen W. formulas. The net can have n circuits with n pipes each circuit.
Calculate properties of R12 refrigerant, including enthalpy, entropy, saturation pressure and temperature, dynamic viscosity, constant pressure specific heat, thermal conductivity and specific volume in both liquid and gas phase. A registered version is available which works with more refrigerants.
Performs calculations for Refrigeration Cycles of Natural Gas Processing Plants. Include documentation file in .pdf format with English and Spanish versions.
Program to calculate the "refuerzo" or "armadura" in concrete elements for flexing. Writing in System RPL and User RPL.
Restates level curves for simple curves like compound curves.
Resistor code color converter.
Permits you to solve "resalto hidraulico" equations (hydraulic braces, numbers of Froude, loss of energy, etc).
Resistor color program.
Calculates the geometric properties of a steel profile.
Calculates the angle for welding and resistance for soldering and other similar calculations.
Lets you choose the stripe colors of a resistor and it will then display its value. It will also let you enter the numeric value of a resistor and will display the stripes the resistor should have.
This program will give the color code for resistors, or compute the value of a resistor given the color code.
Based on a list containing crystallographic unit cell dimensions and the (user defined) Miller indexes of a reflection, this program will calculate the volume of unit cell in real space, the reciprocal unit cell dimensions, and the Bragg spacing corresponding to the given reflection.
Rheology and hydraulics for non-Newtonian drilling fluids, of oil and gas wells. Includes documentation in PDF format. Only for use in a 48GX with at least one 128KB RAM card.
This program is a tool for the solution of any type of structure by the method of the rigidity. It calculate the rigidity matrix of each element, assemble the general matrix of the structure, create submatrices for the calculate of unknown displacements and reactions, and obtain the transformation matrices to turn coordinates of the general system to the local system.
RLC is a two storage element series RLC circuit solver/plotter. It works in a laboratory environment that has the need to build or use a variety of high energy pulse generators.
Calculates the moments of empotramiento perfectly and reactions in a girder with double empotramiento perfectly
Program to calculate RMG in transmission lines. Calculates RMG, DMG, Xl, R, and Y.
This User RPL program calculates the necessary perimetral amount of reinforcement for a rectangular reinforced concrete section under combined compression and bending internal efforts. The output is the total steel area.
Solves differential equation systems of N number by the Runge-Kutta method (4th order) and has an input screen useful for editing many things. Includes a special 
Calculates SALAT times for Muslim prayers.
Program for the outlet of a lake. Calculates the volume, Yn, Yc and Sc. (Hydraulics)
Provides satellite communications link budgeting, antenna siting, and sun interference calculations for geosynchronous satellites. Generates horizon profile drawings and predicted spectrum analyzer traces. Calculates antenna parameters, and bandwidth allocations. Provides for direct conversion and calculation of decibels and carrier to noise ratios. Compatible with 48GX, 48G+, 49G, 49g+, 48gII, and 50g.
A program to determine the transmit gain, receive gain, and figure of merit (G/T) of a parabolic satellite communications antenna. It uses antenna diameter, efficiency, transmit frequency, receive frequency, and receive system noise temperature as inputs. Although developed for satellite communications, it should work with any parabolic antenna system.
Light version of SATCO, a geosynchronous orbit satellite
communications calculator. It provides basic information to help with antenna siting and alignment. It also predicts solar conjunctions (sun interference). Version 1.3 includes satellite and city databases.
The SCpower program was written in an HP48G+; it also runs on the HP49G. It calculates three phase and one phase to ground (1LG) short circuit currents at faulted buses as well as fault currents that circulate through the power network. It uses 100 MVA as base power. It does not yet calculate LL or 2LG faults, nor does it take into account fault resistance. It creates and manipulates the positive and zero sequence impedance matrices of the power system.
Calculates area, centroides and moments of inertia. (Structures)
Calculates the area, center of gravity, moments of inertia and main angle of any shape.
Calculates the static constants (area, center of gravity, static moment and moment of inertia) of flat sections formed by rectangles.
0 Library to calculate the area, center of gravity, the angle to the main axes and the moments of inertia of the main axes. You can construct a section with five different shapes. The shapes are rectangles, circles, sectors, triangles and known sections, like T-profiles. For the G series only.
This program calculates the geometric properties of sections through coordinates, mainly developed for structural engineering, and can still be used to determine the area and center of any surface. SECTIONS is a program created for the 48GX that can be used in the 49 series calculators, including the 50g. Documentation in English; application in Spanish.
For an irregular polygon, this program takes a matrix from the stack and calculates the centroid, area, second moments of area, radii of gyration, principal moments of area, principal axes, and provides a graphical outline of the section indicating the origin and centroid.
Cross-section properties program which can calculate properties of elastic cross-sections. Also includes a section wizard. Written in System RPL and includes a comprehensive manual in Word format. Ported to the 49 by Angelo Cuonzo. SR4 adds a Spanish version.
Law of Sines program. For topography.
Quickly draws shear force and bending moment diagrams for simply supported beams.
Sheaves and Belts Calculus for Pumping Beam Units used in the Oil Industry. Includes documentation in .pdf format.
Program written in User RPL for solving the kinematic problem in 2-D mechanisms. Has a very easy to use interface.
Program for solving problems in operation research (investigacion de operaciones) using the Simplex method.
Yet another simplex program. They just keep coming! I can't believe people keep writing them. (but this one has sound and animations!)
Calculates the values of the equivalent horizontal force in the design of seismoresistant structures. Evaluates the period according to the NSR-98 and calculates torques.
Structure design program for submissive seismic forces (Norm NSR-98 of Colombia). It calculates the forces in all the floors by means of phantom of seismic design by the method of the equivalent horizontal force.
A planetarium-style graphic astronomy program. Designed for naked eye observers, the program produces a graphic display of the heavens. You also get the numbers, in a clear, useful format.
With this program you can calculate the input resistance and output resistance, voltage gain for the four basic configuration of the BJT transistor: CE, CC, CB, DE.
SMPTE is a small periodic table of elements written in User RPL.
Calculates parameters in solvent extraction in processing cooper minerals O/A-A/O relation, selectivity, efficiency, etc. Has an annoying startup screen.
Thin profile resolution for building science. Calculates moments and stresses.
"Live" maps of Spain with community & province borders, and some associated data.
This is the Sparcom Celestial Navigation Pac based on the celnav.lib by the original author. The package contains a dump of the original card for use in HP 48 emulators or on a memory card, the port of the software to the 49/50 as a library, and the scanned manual as a PDF. The dump is compatible with the 48SX/48GX; the library is compatible with the 49g+/50g. Redistributed with the permission of the family of Dr. Thomas Metcalf.
Library of equations for designing ported and closed-box speaker enclosures. The equations were taken from speaker design books and technical papers by Richard Small and Neville Thiele.
Clone of HP's periodic table of elements library, which was originally written for the 48 and ported to the 49 series. SpeedPT was rewritten from scratch to be faster than HP's library while taking less memory and maintaining all the same functionality. Works on both the 48 series (where it can be made even faster with the addition of SpeedUI) and the 49 series (for which it includes the missing 10-pixel font, which had been dropped from the 49 series). Version 9.05 adds SpeedUI QuickStartMenu support.
A very simple implementation of Spice, written in User RPL.
Determines the DC operating point of a circuit with inductors shorted and capacitors opened for BJT transistors, diodes, and op-amps using the Ebers and Moll non-linear equations model. Requires 
Quite simple program to make star/triangle conversions. Also has mirror and rotate capabilities.
Gives a feel for what the sky will look like tonight, next week, last year, or whatever, for beginning astronomers. Includes over 650 stars from all 88 constellations, plus the mean positions of the sun, moon, and 5 nearest planets. This old version is included because it is a third the size of the latest version.
Gives a feel for what the sky will look like tonight, next week, last year, or whatever, for beginning astronomers. Includes over 650 stars from all 88 constellations, plus the highly accurate mean positions of the sun, moon, and all 9 planets. It also has zoom features for viewing smaller areas of the sky, solar eclipses, etc, and can correct for light time and parallax.
Star Plotter produces simple star maps with familiar constellations for anytime of the day, similar to those found in Astronomy and Sky & Telescope magazine. A total of 188 stars make up the database which includes the proper name of the star, magnitude, right ascension and declination. In v1.1, the plotting speed has been improved, and there are minor bug fixes.
SAXPC ULTIMATE (Structural Analysis XP Collection)is a UNIQUE program to analyze any Frame (Portico/Porch) or any Beam using the Stiffness Matrix Method (Displacements Method), giving you everything (results,all matrices) step by step and also it plots (DRAWS) the STRUCTURE and its LOADS, drawing them according to their values (auto scaling). Choosing the loads and support types graphically. Please tell me if you like it.
Calculates the mode, frequency, and period.
This program is designed to apply basic matrix structural analysis to truss members. Member and nodal properties can be entered and saved then drawn and/or analyzed. Analysis involves assembling the stiffness matrix and fixed-end-forces then solving P=KU through brute force by inverting the stiffness matrix. Requires 
Summary of ground matter mechanics.
Program to determine the granulometry of a suelo and the AASHTO classification.
Calculates the time for sunrise and sunset, given the coordinates of your position, your timezone and the date.
SunClock shows the regions of the Earth which are in daylight by drawing the sunlight on a Mercator projection map of the globe.
Survey program which can set out points, lines and perform resections. Designed with job management in mind. Work on 48G+ and 48GX.
Program for calculation of exit pressure and mass flux in supersonic nozzles.
A fully featured survey program for use by land surveyors.
A collection of surveying programs.
Surveyors - Menu conversions of metric to feet, feet to meters, degree - minute - seconds, decimal degrees, and easy store/recall any 2 variables. These are common functions that are not always easy to use in the 48.
Symmetrical components program that uses ABC rotation. Converts an unbalanced 3-phase system into three balanced 3-phase systems.
Resistor color code program with just two commands: COR and VALOR. With one, enter the colors and it will tell you the resistance. With the other, enter the resistance and it will tell you the colors.
Has Czerny tables for reinforced concrete calculations.
Periodic table of elements.
Estimates the quantity of steel bars according to the area of calculated steel.
Steam tables for 48G. Easy to use!
A nice periodic table, including mass, density, relevant temperatures, and discovery date.
Yet another periodic table of the chemical elements. Some elements use French names.
Periodic table of elements program.
Calculates requirements for septic tanks based on expected usage.
This program calculates the dimensions for storage tanks in water pipes.
Performs temperature measurement and calibration calculations using NTC thermistors and 100 Ohm Platinum RTD's. It is based on industry standard Hart-Stienhart and second-order Callendar equations for conversion of temperature and resistance values.
Performs tensional status analysis; much more comprehensive than the above program.
Motor theory, vapor cycles, gas cycles, "toberas", and more.
Calculates the granulometry of the soil. Useful for earthmoving and paving.
A great land surveying package.
Calculates and plots the shortest route between two points on earth surface according to the World Geodetic System 1984 (WGS84).
Huge (70k) thermodynamics library.
Contains the full source code and documentation for ThermoPro, a very comprehensive thermodynamics library. Also includes several different binaries other than the one made available in 1994. Hopefully someone will use this source code to port it to the 49G/49G+.
Performs a transmission line analysis on the Smith chart.
Some small tools for astronomical (Ephemerids of sun and some stars, real height and azimuth, total correction) and terrestrial navigation (orthodrome and loxodrome).
Set of topography programs useful for people in Topography 1.
Set of topography programs.
Topography library. For the 48GX and 48G+ only. Adds an annoying splash screen to your calculator.
Topography program to obtain the totals of latitude and length, choose courses and the distances, and more.
Contour level interpolation, where you enter the upper dimension, the lower dimension, and the distance between points.
Calculates diverse elements of topography like area by coordinates, conversions of area, double radiation, calculation of azimuths, tachymetry, corrections by catenary and traction, etc.
Topography library for both new and old students of the matter. Contains a great variety of programs that could be of use for university students of civil engineering.
This software calculates the area by coordinates, double radiation, and double abscissa. It gives you a detailed result, drawing the polygon.
Contains several simple programs that are useful for topography calculations, including coordinate conversions, calculation of azimuths, conversions between bearing and azimuth, and more.
Does calculations related to topography, with an overly fancy and complicated interface.
Software for use with topography.
Performs calculations on tools for network; could be useful for land surveyors.
Program for topography by radiation. Also draws the polygon for the coordinates.
This is an excellent library to perform some calculations about curves in topography and some curves analysis in road designing. The curves you can analyze are: a simple curve, inaccessible pi, obligated point, vertical curves and something additional the calculations on polygonal coordinates, all the curves analysis will give you the table with all the stations in the curve, they are easy to use and the manual is understandable even though it's in Spanish.
Program for use in control systems. It includes: Simulation, Predetermined Inputs, Bode Plot (Magnitude and Phase), Root Locus, Nyquist Plot, Nichols Plot. All in an easy to use package with graphical menus, like the built-in apps.
Electric power transport full calculating program. The best program for Spanish electrical engineering students. Requires 
Civil engineering program that works with tangents, coordinates, distance between points, slopes, and more.
For a given truss, calculates the forces on all the beams.
Dam design program using a method developed in Japan.
Provides satellite antenna pointing angles with 3 decimal point accuracy. Allows accurate calibration of antenna tracking systems. Based on Intelsat Earth Station Standard (IESS) 412.
Structural engineering application which can calculate the following things of any given truss: member elongations, member normal force, member normal stress, nodal displacements, and reaction forces. Written in System RPL (includes source code) with some assembly language and includes a comprehensive manual in Word format. SR2 includes Spanish HP 49 library.
Three-dimensional analysis of hyperstatic and static truss with the finite element method.
Calculates the power, verification and design of pipes.
Performs calculations with pipes.
Calculates simple circular curves, composed of two and three radii, curved symmetrical verticals, transition curves (clotoides symmetrical, asymmetric), calculates transition of peralte, graphs the transition of peralte, calculates coordinates between two points, calculates course and distance between two points, calculates area and volume of earth, performs conversions of angles (GG.MM.SS to decimal degrees, decimal degrees to GG.MM.SS, azimuth to course, course to azimuth, and more.
Performs calculations for Twin Spindle Screw Pumps of all industries. Includes documentation file in PDF format
Contains functions useful for calculations related to two-port networks. Current version is first standalone. Includes both Polish and English documentation. Now requires free registration.
This library handles any manipulations with two-ports. It works with filters (and real values), but also with algebraic two-ports. Library needs to be manually attached with :0:1493 ATTACH.
The program gives information about some objects of our Solar System (the Sun, Moon, and all known planets except the Earth), and some of the brightest stars of some well-known constellations. This old version is included because it is much smaller than the current version.
The program gives information about some objects of our Solar System (the Sun, Moon, and all known planets except the Earth), and some of the brightest stars of some well-known constellations.
The Astronomical Companion: an almost complete and expandable implementation of the book "Astronomical Algorithms" written by the well-respected expert Jean Meeus. It is intended mainly for observation preparation and field use, but also for historical research. Now the full version is available for free.
Classifies the soil by the unified method of soil classification.
Calculation of points of vertical alignment. Does not automatically attach, so you must manually call :0:1543 ATTACH.
Design to flexion by rough estimate of beams of varied section. (Reinforced Concrete)
Structural analysis program, in 48G/G+/GX version, to solve finite, semi-infinite and infinite beam on elastic foundation. Numerical and graphical outputs are available, at user's choice, for the displacements and internal forces values produced by loading sets containing concentrated, uniformly distributed loads and external moments applied.
Vector offset program for surveyors.
Vertex48 is a land surveying data collection and computation system for use with the 48GX calculator. It was designed to have a flexible user interface for collecting 2D or 3D survey data. Compass rule adjustments of closed or cross traverses (including 3D) can be performed. It can stake to points, lines, or curves. It can communicate with several types of total stations and has numerous COGO functions. A Windows Vertex T&C program is included to transfer data files to/from the PC, and convert them to other formats.
Performs vertical curve calculations.
Structural analysis program for all types of beams, by introducing the conditions of support and load, resulting in reactions in the supports, the diagram of flectors, etc. For the G series only.
Solves beams and calculates reinforcement.
Performs shear, moment and elastic diagrams on continuous beams.
Program for the design of rectangular beams for the flexion forces, shear and when they correspond to the mechanism of diagonal reinforcement of coupled beams, according to the Code ACI-318(99).
This program calculates the nominal resistance of a section of reinforced concrete.
Design of beams of reinforced concrete, based on the "Normas Técnicas Complementarias del Reglamento de Construcciones del Distrito Federal" (NTC87 of the regulation of constructions of Mexico City).
Graphs the diagrams of sharp, moment, and deformation of beams.
This library performs many conversions of viscosity units. Includes documentation file in PDF format. Unfortunately this library also changes a lot of your configuration settings.
Astronomical navigation applications.
Program that draws graphs of Volumetries (red-ox reactions).
A comprehensive circuit analysis program, where you can draw circuits and analyze them. Also does bode plots and Fourier analysis.
Verifies I, H and C beams made from steel for bending moments according to NB code.
This User RPL program calculates the necessary amount of perimetral reinforcement for a rectangular reinforced concrete section under combined compression and bending internal efforts. It replaces the usual abacus employed in concrete columns design. The Brazilian code NB-1/78 prescriptions are respected.
Calculates water vapor and liquid properties as a function of temperature.
Calculates Weibull equation parameters.
Lots of notes relevant to various science-related classes.
Lots of notes relevant to a first semester Material Science and Production class.
Aconcrete reinforced beam designer for the G series. Easy way of input data and practical way of get results. Beams with rectangular and T sections can be designed according to the ACI code. Detailed shear design according to the ACI code is also included. Complete reports. Complete documentation.
Converts American Wire Gauge (AWG) sizes to equivalent area and diameter.
Wshape is a database of AISC structure shape properties. The 
Coordinate geometry and surveying utility program. For the G series.
Extended Time, Date, Calendar and Astronomical routines for the HP 48G(X) and 49G(+). Part of these routines are ported from the invaluable HP-41C CALENDARS Users' Library Solutions. The astronomical routines include calculation of times of sunrise, transit and sunset, moon phases, and seasons.
YCN48/49 is a library written in System RPL useful for the study of "Hydraulics Of Open Channels," using SI or English units.
Circuit simulator that finds numeric voltage in all nodes and numeric current in all branches of a circuit that contains (complex valued) impedances.
Plots and calculates the Fourier transform modulus and phase starting from the poles and zeros of the Z-transform of a sequence.
Calculates sections of foundations and steel sections.
A package to calculate the geometric characteristics of a section, and to determine tangential tensions.
Performs calculations for two-port networks.