1cm=35.32 cft
normal size of brick=.75*.375*.25=.0703
if volum 35.32cft
morter.30%
morter=35.32*.30=10.59
brick=35.32-10.59=24.724/.0703=351bricks
ratio 1;6=7
1/7*10.59*1.27/1.25=1.54 cement
6/7*10.59*1.27=11.52 cft sand

theritically 500 bricks and practically 450 to 480.here
practically means type of skilled mason and labor.it needs
58 kg cement to construct a cumec of brick work of size
19*9*9cm

Factor of safety for steel should be based on its yield stress or its ultimate stress and factor of safety for concrete should be based on its ultimate stress or its yield stress?

Structural steel: For a thumb rule check in field, the
allowable weight which can be hung down for 10mm dia mild
steel rod, of yield value of 0, 25 KN/mm2 and applying a
factor of safety 2.00, will be how many kg?