quiz answer:
muster roll - it means attendance maintained in site work construction.
preparation for cement mortar (CM):
example: CM 1:3
1) cement = 3/(1+3) x 1
= 0.75
= 0.75 x (1440/50)
= 21.6 (taken as) = 22bags
22 Bags of cement needed for this cement mortor.
2) sand = 3/(1+3) x 3 =
2.25 meter cube
This cement mortar 1:3 is prepared by 22 bags of cement and 2.25
meter cube of sand.
notes:
- 3 is the cement mortar density
- (1+3) is taken as CM 1:3
- multiply by 1 is for cement
- multiply by 3 is for sand
- 1440 is one meter cube weight of cement.
- 50 is one bag weight of cement
IS code :
IS - 4031
method of physical testes for hydraulic cement.
IS - 650
specification for standard sand for testing of cement.
IS - 383
specification for coarse and fine aggregate for use in mass concrete.
IS - 515
specification for natural and manufactured aggregate for use in mass concrete.
IS - 2387 method
of test for aggregate for concrete.
Today's quiz:
what is mean by Blistering ?
Comments
Post a Comment