Step 1 :Volume of Concrete Block = Length (m) × Depth (m) × Wall Thickness (m)Volume of Concrete Block = 3.20 × 3.20 × 0.23Volume of Concrete Block = 2.36 m3Volume of Concrete Block = 83.19 ft3Block Size = 9 (inch)× 4 (inch)× 3 (inch)Block Size = ( 9 × 0.0254 ) × ( 4 × 0.0254 ) × ( 3 × 0.02454 )Block Size = 0.2286 (m)× 0.1016 (m)× 0.0762 (m)Size of Block with Mortar = ( 0.2286 + 0.015 ) × ( 0.1016 + 0.015 ) × ( 0.0762 + 0.015 )Size of Block with Mortar = 0.2436 (m) × 0.1166 (m) × 0.0912 (m)No of Blocks = Volume of Concrete Block Volume of one BlockNo of Blocks = 2.3558 m30.2436 × 0.1166 × 0.0912No of Blocks = 909 BlocksActual Volume of Blocks Mortar = No of Blocks × Volume of Block Without MortarActual Volume of Blocks Mortar = 909 × ( 0.2286 × 0.1016 × 0.0762 )Actual Volume of Blocks Mortar = 909 × 0.0018Actual Volume of Blocks Mortar = 1.6095 m3 Quantity of Mortar = Volume of Block Mansonary - Actual Volume of Blocks without mortar Quantity of Mortar = 2.3558 - 1.6095 Quantity of Mortar = 0.7463 m3Add 15% more for wastage, Non - uniform thickness of mortar joinsQuantity of Mortar = 0.7463 + 0.7463 × 15100 Quantity of Mortar = 0.8582Add 25% more for Dry VolumeQuantity of Mortar = 0.8582 + 0.8582 × 25100 Quantity of Mortar = 1.0728 m3
Step 2 :Amount of CementCementSum of Ratio×Qauntity Of MortarCement =17 × 1.0728Cement =0.1533 m31 Bag of Cement = 0.035 m3No fo Cement Bags = 0.15330.035No 0f Cement Bags = 219 kg
Step 3 :Amount of Sand RequiredSandSum of Ratio×Qauntity Of MortarSand =67 × 1.0728Sand =0.9195 m3By Considering dry loose bulk density of sand 1550 kg/m3Sand = 0.92 × 1550 Sand = 1425.28 kg
A concrete block is primarily used as a building material in the construction of walls. It is sometimes called a concrete Block unit (CMU). A concrete block is one of several precast concrete products used in construction.
Concrete blocks can be solid or hollow with two or three cores or voids. Concert blocks are lightweight generally concrete blocks are light and common in various sizes a standard concert block is 600mm x 250mm x 150mm is equivalent to by about 8 red concrete-block, the weight of one single block is about 14kg where is 8 red concrete-block is 36kg that is more than double.
Volume of Concrete Block = Length (m) × Depth (m) × Wall Thickness Block Size = Block Length × Block Width × Block Height No of Blocks = Volume of Concrete BlockVolume of one Block Actual Volume of Blocks Mortar = No of Blocks × Volume of Block Without Mortar Quantity of Mortar = Volume of Concrete Block - Actual Volume of Blocks without mortar
Note: 1 m3 = 35.3147 ft3
It is used in high rise building to reduce structural load. Concrete blocks are easy to handle compare to red Concrete-Block, they are larger in dimension and superior in quality and most importantly save in time and cost.