Question

A standpipe system in a 39m tall building has a rooftop reservoir for fire fighting containing 1/2 hour water supply

Answer 1

Answer:

Step-by-step explanation:Pritam Dey Total Building height is 39m. Assuming 3m per floor height, total number of floor comes to be 13, so as per question there will be 13 hose . let us assume volume of the tank to be X lit. so usage per second will be X/1800. so delivery rate is X/(1800 x 13)....... For the second part water out flow per second will be number of floors x number of hose i.e 13x13.. so volm of roof top reservoir is 169x(0.5x60x60)/1000 cubic metre. i,e 304.2 cubic metre, so putting this value of volume delivery rate comes around 13lit/sec... but the option doesnt include these values...., Aagaman Bharadwaj I guess it comes to be this...