EXAMPLE 3.4.4. ESTIMATING MASONRY FOR A WALL

Estimate the masonry required to construct a 5-bay wall with a total of 20m length as partially shown. CHB used is 6" and mixture is class B. Concrete proportion uses class A. And plaster mixture is class A at 20mm thickness.

Concrete:

• Footings and columns: The 5 intervals of wall comprise of 6 sets of footings and columns.

Using the volume method:

                 
                 

                 

             

• Wall footings. There are 5 bays or lengths for the whole wall.

              

              

              

              

              


Then finally, concrete components for Concrete are:

For gravel, take note that gravel bed is supposed to be added to the volume for the footings and the wall footings.

    

             





Masonry:

• CHB

            
            

• Mortar (using area method)

From table class B with 6" CHB:

• Plaster

For two faces plastered:

          

         

Using area method: class A and 20mm thk.








Summary of materials:

                                                          787 pcs  6" CHB
39.087+64.0322+45.288=148.4072 or 149 bags Portland cement (40kg)
2.7144+5.3088+2.516    =10.5392   or 11 cu.m. River sand
                                        4.9205    or 5 cu.m. Gravel





Back to 3.0. Estimating Masonry