Engineering hub

Engineering Hub: System Design, Drawings & BOQ

Fire suppression

This sits under Fire protection. The worked room is 10 × 8 × 3.5 m at 21 °C. The calculator, the drawing and the bill use the same quantities.

Design standard

Indian Standard uses IS 15528:2004 for carbon dioxide only. FM-200, Novec, IG-541, IG-100 and IG-55 use IS 15493:2004 (ISO 14520), not IS 15528.

FM-200 (HFC-227ea). NFPA 2001 §5.5.1 / IS 15493.

Discharge 10 seconds. Hold time at least 10 minutes, confirmed by a door-fan test. Class C design is not below Class A.