for 1m3 of brick work = 500 nos needed but it is theoritical only, 490 bricks is needed, to check this take total volume of brick work and then count the no how much brick is needed for that volume and then covert it for 1m3 volume you will get doubts clarified
R u aware of faloowing things
1:Naminal thickness and Actuval tickness of wall?
2;Dry volume of mortor ?
3: Extra mortor rqd forg filling ?
4:westage norms of different meteriels?
5:Standard jont thickness in maasonary wall if yes R u
aware of practical thk ness maintained by masons on site
All thise factores we have to considere then only we ll
able get rqd qty of metereal