Site Drainage Pipe (concrete drain pipe)

Pipe size                        Set & Align Pipe                         Grout Joint
 Inches                               Per Meter                                    Each

4"                                        0.23                                              0.26
6"                                        0.26                                              0.29
8"                                        0.33                                              0.35
10"                                      0.36                                              0.43
12"                                      0.49                                              0.65
15"                                      0.66                                              0.93
18"                                      0.95                                              1.20
21"                                      1.05                                              1.45
24"                                      1.15                                              1.79
27"                                      1.21                                              2.01
30"                                      1.28                                              2.15
33"                                      1.44                                              2.37

How to estimate concrete hollow blocks or CHB

A wall has a dimension of 35 meters long and and 7 meters high specify the use of 15 cm. concrete hollow blocks. Prepare a comparative bill of materials for CHB.

15 x 20 x 40 cm. CHB wall
find the area of the wall
A= 35 x 7
A= 275 sq. m.

1 sq. m. of a wall consist of 12.5 pcs of CHB

275 x 12.5 = 3,437.5 pcs of CHB