Let us consider an AAC
block wall of size 3m × 3m × 0.2m as shown in the plan.

Available market AAC block
sizes 600mm X 200mm X 100-300mm. We will
use **600 x 200 x 200 mm** for this wall
construction as the thickness given in plan in 200mm

** **

Therefore, Let us take an
average mortar thickness of 10 mm. For calculation purposes

** **

**Given data: **

AAC block wall Length (L) =
3m

AAC block wall Height (H) =
3m

AAC block wall width |
thickness (w) = 0.2m

AAC block size = 0.2m ×
0.2m × 0.6m

Mortar thickness = 10mm =
0.01m

Ratio of Cement-mortar = 1:6 (Selection of Cement Mortar Ratio)

**ALSO USE:** Concrete Block Calculator & Estimator | Blockwork Mortar material Estimator

**Step 1: To find volume of the block wall**

**Volume of the block wall **= Length (L) × Height (H) × Thickness (W) = 3m × 3m ×
0.2m** = 1.8 cum/m ^{3} **

**Step 2: To find volume of the block without
mortar**

**Volume of the block without mortar = **Length (L) × Height (H) × Thickness (W) = 600 mm × 200
mm × 200 mm = 0.6m × 0.2m × 0.2m = **0.024
cum/m ^{3}**

**Step 3: To find volume of the block with
mortar**

Using 10mm mortar | by
adding 0.01mm to size of block | addition of the mortar thickness comes - = 0.61
x 0.21 x 0.21

**Volume of block with mortar** Length (L) × Height (H) × Thickness (W) = 610 mm × 210
mm × 210 mm 0.61 x 0.21 x 0.21 = **0.02562
cum/m3**

**Step 4: To find number of AAC blocks required**

**No of blocks**
= Volume of blockwork/Volume of 1 block with mortar = 1.8 /0.02562** **= **70.257
– 71nos **

**Step 5: To find volume of mortar required**

**Total volume of blocks without mortar** = 71 x 0.024 = 1.704m^{3}

**Volume of mortar**
= Volume of blockwork - Total volume of blocks without mortar = 1.8 – 1.704 **= 0.096 m ^{3}**

^{ }

**Wet volume of the mortar** = 0.096 m^{3}

**Dry volume**
= 1.33 x 0.096 = 0.12768 m^{3}

**Step 6: To find volume of cement required**

Ratio of Cement-mortar =
1:6

Total ratio = Ratio of
cement + ratio of sand = 1 + 6 = 7

**Volume of cement**
= Ratio of cement/total ratio x Dry volume = (1/7) x 0.12768 = **0.01824m ^{3}**

**Weight of cement**
= Volume x density
= 0.01824 x 1440 = 26.2656KG

**No of cement bags**
= Weight of cement / Weight
of 1 bag = 26.2656 / 50 = 0.525 bags – 1 bags

**Step 6: To find volume of cement required**

Ratio of Cement-mortar =
1:6

Total ratio = Ratio of
cement + ratio of sand = 1 + 6 = 7

**Volume of sand**
= Ratio of sand/total ratio x dry volume = 6/7 x 0.12768 **= 0.10944 m ^{3}**

^{ }

**Material need AAC block wall of size 3m × 3m × 0.2m **

** **

**AAC block = 70.257 – 71nos**

**Cement = 0.525 bags – 1 bags**

**Sand = 0.10944 m ^{3 }(cum-cft) 3.8646cft**

**Materials required for 1 Sqm of an AAC block wall**

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