Question

Calculate the volume of mortar ( cf) for the following brick wall. A double wythe wall 8-feet high by 14-feet wide having one opening 48-inches by 72-inches and one opening 32 inches by 48 inches. Mortar joints are 0.5-inches and there is 25% mortar waste. The joint thickness between the wythes is 0.5-inch thick and is grouted with mortar. There are 982 total bricks (3.75" x2.25" x8") for both wythes including 3% brick waste.

Answer 1

1)Mortar Volume-Brick joints

From the given information ,first let us calculate the volume of mortar required for the mortar joints,

Volume of mortar required per brick=(T x W(L+H+T)

T-Mortar thickness

W-Width of the brick

L-Length of the brick

H-Height of the brick

Volume of mortar =(0.5 x 2.25(8+3.75+0.5)

                                 =33.68 cubic inch

Adding 25% wastage,total volume of mortar required =42.1 Cubic inch

=0.0243 cft

Total number of bricks including 3% wastage =982 nos

For Mortar volume we need to consider without wastage.

Hence total number of bricks= 982/1.03 =953 bricks

Total total colume of mortar required for brick joints=953 x 0.0243=23.1 cft

Mortar volume between the Wythes

Now let us calculate the volume of mortar required between the wythes

Area of the wall = 8 x 14=252 sft

Area of the opening =4 x 6 =24 sft

Net area = 252-24=228 sft

Thickness of the mortar =0.5 inch i..e,0.04 ft

Volume of mortar between wythes =228 x0.04

                                                                 =9.12 Cft

Total Mortar Volume

Total Mortar Volume=Mortar volume for brick joints + Mortar volme between the wythes

   =23.1 + 9.12

=32.22 Cft