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Fire Fighting
Sprinkler Pipe Size Chart: How Many Sprinklers per Pipe Size (NFPA 13)
Complete NFPA 13 sprinkler pipe size chart for light and ordinary hazard, steel and copper. 2 sprinklers need a 1…
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AutoLISP Tools
Fire Sprinkler Layout LISP for AutoCAD: Free Download + NFPA 13 Spacing Guide
Placing sprinklers one by one in AutoCAD is slow, and on a large car park or mall floor it is…
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Electrical
Earthing & Lightning Protection Details DWG – 37 Electrical Typical Details (Free Download)
This free earthing and lightning protection details DWG is a complete electrical typical details sheet taken from a live Gulf…
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Electrical
Cable Tray Installation Details DWG & PDF Free Download
Free AutoCAD DWG and PDF set of cable tray installation details: perforated tray, cable ladder, fittings, supports, earthing, expansion joints,…
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Fire Fighting
Fire Alarm Battery Calculation Step by Step (NFPA 72)
Step-by-step fire alarm battery calculation to NFPA 72: standby and alarm currents, 24 h + 5 min durations, 20% safety…
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