MASONRY REVIEWER
CONCRETE HOLLOW BLOCKS
1. Bearing ; carry load aside from own
weight (15-20cm)
2. Non- bearing blocks; walls, fences,
dividers ( 7.5cm to 10cm)
Has three whole cells and two one half
cells. (4 total cells)
CONSIDERATIONS FOR MASONRY
1. Qty. of CHB
2. Qty. of cement and sand for block
laying mortar
3. Qty. of cement and sand for mortar
to fill hollow cell of block
4. Cement and sand reqd. For
plastering sides of block
5. Materials for CHB footing and
concrete post
6. Steel reinforcements and tie wires
FACTORS AFFECTING ESTIMATION
1. Improper measure of aggregates
during block laying.
2. Measuring box not with accordance
to specified measurement
3. Addition of cement to over exposed
mixed mortar not used on time
4. Excess mortar dumped. Common
after working hours where no
overtime pay is authorized.
