Design Master HVAC is an integrated HVAC building design and drafting program that runs on top of AutoCAD. Drafting features include single-line and double-line 2D ductwork with automatic fittings and 3D ductwork. Duct sizing calculations include constant pressure drop, constant velocity, and static regain. Pressure drop in the duct system can also be calculated. Building load calculations are done using the ASHRAE CLTD method. More…

Design Master Electrical is an integrated electrical building design and drafting program that runs on top of AutoCAD. Drafting features include light fixture layouts, one line riser diagrams, panel schedules, fully customizable graphics, circuit looping, automatic tick marks, and switching. Calculation features include circuit load totals, breaker sizing, feeder sizing, fault current calculations, voltage drop, and photometrics. More…

MITCalc is the multi-language mechanical and technical calculation package. It includes solutions for gear, belt and chain drives, springs, beam, shaft, bolt connection, tolerances, welding, shaft connection and many others. The calculations are compatible with many 2D and 3D CAD systems (AutoCAD, Iventor, Solidworks...) and support both Imperial and Metric units and are processed according to ANSI, ISO, DIN, EN, BS, Japanese and other standards. More…

It automatically generates the construction drawings of the cast in place box or pipe culverts. The culvert consists of one or more rectangular frame pieces or pipes, 2 wings or a wing and a fall chamber. Rectangular pieces can be placed in steps to reduce the slope of the drain. The wings and the fall chamber can be at 90 degrees or at a different angle from the culvert axis. The walls of a wing can have different sizes and angles. More…

Cut and fill volume is an add-on for AutoCAD or BricsCAD, with new commands for scale modification for LINETYPE and HATCH, registration of mileage in BLOCKs, modification of longitudinal profiles, cut and fill volume, DWG to custom Hatch pattern, 3D axis and roadside, starting from 2D and 4 viewports with views at the same scale in the XOY, XOZ, YOZ planes and in 3D. More…

CAD Converter will help you to convert CAD files to tiff, PDF, bmp, jpeg, png, wmf, dxf. Source formats are dwg, dxf, plt, hgl, hg, hpg, plo, hp, hp1, hp2, hpgl, hpgl2, gl2, prn, spl, cgm, svg. CAD Converter will also resize your files or combine them into one final document. All can be done in batch! You may add watermarks to the output files. Handle CAD converter via GUI or command line. Download your free full-optional version and try it out. More…