## Compound wall cost per Rft & Sqft in India

Today we will estimate the cost of boundary wall construction in India, So let’s start…..

**Compound wall cost per Rft & Sqft **

**Given Data,**

Size of Plot – 40′ x 30′

Column-to-column distance – 10ft.c/c

Main Gate size – 10′

Pcc thickness – 4”

Pcc Grade – M15 (1:2:4)

Footing Size – 1.5′ x 1.5′

Footing height below GL – 2.5′

Steel bar diameter in footing – 10mm

Plinth beam size – 9” x 12”

Plinth beam depth below GL with PCC – 7” + 4″ = 11”

Plinth beam depth above GL – 5”

Column size – 9” x 9”

Height of Boundry wall from GL – 6 feet

wall thickness – 6”

Coping thickness – 4”

The thickness of rubble soling – 9” or 0.75′

**No. of Column required in total Compound wall **

Site perimeter/c/c column distance

Site perimeter – Length of wall 1 + Length of wall 2 + Length of wall 3 + Length of wall 4

= 40 + 40 + 30 + 30 – 140feet

**So, Total no. of column = 140/10 = 14Nos.**

**Step no.1 – Excavation quantity**

**i). Earthwork Excavation**

Size of footing – 1.5′ x 1.5′

Excavation on both sides – 3”

So, the Excavation size of the footing will be – 2′ x 2′

Footing height below GL – 2.5′

Then, the total volume of footing excavation – footing length x footing breath x footing depth (l x b x h)

**– 2′ x 2′ x 2.5′ = 10cft**

and, total no. of column footing – 14Nos.

So, total the total volume of footing excavation – (footing excavation volume x no. of footing)

** – 10 x 14 = 140cft**

**ii). Plinth Beam Excavation**

Plinth beam size – 9” x 12”(LxD)

Let’s take both side offset for excavation of beam – 4”

So, Width of plinth beam – 9″ + 4″ + 4″ =17″ or 1.416ft

Plinth beam depth below GL with PCC – 7” + 4″ = 11” or 0.9166′

Plinth beam depth above GL – 5”

Then, the total volume of excavation – Perimeter of the site – (No. of footing x footing width) x plinth beam excavation width x plinth beam excavation depth

= 140 – (14 x 2′) x 1.416 x 0.9166 (depth below GL)

**= 112 x 1.416 x 0.9166 = 145.365Cft**

**The total volume of excavation for the compound wall **

= footing excavation + Plinth beam excavation – 140 + 145.365** = 285.365Cft**

**Step no.2 – Rubble Soling (only in Footing)**

The thickness of rubble soling – 9” or 0.75′

Size of footing – 2′ x 2′

Depth of soling – 0.75′

No. of footing – 14Nos.

So, The volume of soling in footing – Footing area x depth of soling x no. of footing

**= 2′ x 2′ x 0.75′ x 14 = 42Cft.**

**Step no.3 – PCC Quantity**

**i). PCC for footing**

Pcc thickness – 4” or 0.33′

No. of footing – 14Nos.

Length of footing – 2′

Width of footing – 2′

The volume of Pcc in footing – l x b x h x No. of footing

** – 2′ x 2′ x 0.33′ x 14 = 18.48Cft**

**ii). PCC for plinth beam**

The volume of excavation of beam – 145.365Cft

Pcc thickness – 4” or 0.33′

Plinth beam depth below GL with PCC – 7” + 4″ = 11” or 0.9166′

The volume of PCC for plinth beam – by volume ratio with plinth beam excavation

= (0.33/0.9166) x 145.365 **= 0.36 x 145.365 = 52.33Cft**

**So, The volume of PCC for compound wall – Pcc volume of footing + PCC volume of plinth beam**

**=18.48 + 52.33 = 70.81Cft.**

**Step no.4 – Materials Calculation PCC Quantity**

Given, Pcc Grade – M15 (1:2:4)

**The total volume of PCC – 70.81Cft.**

First of all, for easy calculation, we will convert Pcc quantity Cft to Cum

To convert Cft to Cum **→ Multiply by 0.02831 or divide by 35.31**

(Because 1Cft = 0.02831Cum)

So, the volume of PCC – 70.81Cft x 0.02831 = 2.004Cum

but it is the wet volume of concrete & to calculate qty of materials first we calculate the dry volume of PCC

Always, remember one thing,

The dry volume of concrete is always 54% more than the wet concrete

**So, the dry volume of PCC = 2.004 x 54% = 3.086Cum.**

Now, we will calculate the Qty of materials for PCC

**i). Cement Quantity**

Formula = Volume of dry concrete/Sum of Ratio x Cement ratio in the mix

= 3.086/(1+2+4) x 1** =0.441Cum**

As you know, the density of cement = 1440Kg/m³

Volume of cement in kg = 0.441 x 1440 = 635.04kg

As we all know, 1 cement bag = 50kg

**Number of cement bags = 635.04/50 = 12.70Bags**

**ii). Sand Quantity**

Formula = Volume of dry concrete/Sum of Ratio x Sand ratio in the mix

= 3.086/(1+2+4) x 2** =0.8817Cum**

To convert the quantity in Cft, multiply by 35.3147 (because 1cum is equal to 35.3147cft)

So, volume of sand = 0.8817 x 35.3147 = 31.22Cft

**iii). Aggregates Quantity**

Formula = Volume of dry concrete/Sum of Ratio x aggregates ratio in the mix

= 3.086/(1+2+4) x 4** = 1.7634Cum**

To convert the quantity in Cft, multiply by 35.3147 (because 1cum is equal to 35.3147cft)

**So, volume of sand = 1.7634 x 35.3147 = 62.274Cft**

**Step no.5 – Concrete quantity**

**i). Concrete volume for footing**

Length of footing – 1.5′

Width of footing – 1.5′

The thickness of footing – 0.833

No. of footing – 14Nos.

The volume of footing concrete – L x B x H x no. of footing

** – 1.5′ x 1.5′ x 0.833′ x 14 = 26.24cft or 0.743cum**

**ii). Concrete volume for Plinth beam**

The total length of the perimeter is 140′

Width of plinth beam – 9”(0.75′)

Depth of plinth beam – 12”(1′)

Total column footing volume = Column width x Mno. of column

** = 0.75′ (9”) x 14 = 10.5cft**

So, the Volume of concrete in the plinth beam = Perimeter length x breadth x depth of plinth beam – Deduction of the volume of column footing

**= (140 x0.75 x 1) – 10.5 = 94.5cft**

**iii). Concrete volume for Column**

Column size – 9” x 9”(228mm x 228mm) or 0.75′ x 0.75′

Column height above GL – 6.416ft

Column height below GL – 7” (0.583′)

No. of column = 14Nos.

The volume of concrete in column = l x b x h x no. of column

L x B x (Column height below GL + Column height above GL) x no. of column

**= 0.75 x 0.75 x (6.416 + 0.583) x 14 = 0.75 x 0.75 x 7 x 14 = 55.125Cft or 1.561Cum.**

**Step no.6 – Steel quantity**

**i). Quantity of steel in footing**

Length of footing – 1.5′

The breadth of footing – 1.5′

A number of footing – 14Nos.

Footing thickness – 0.833′

if we consider,

Steel bar diameter in footing – 10mm

Spacing – 5”

Clear cover – 2”

**So, the total steel qty of footing = 43.98kg.**

**ii). Quantity of steel in Plinth beam**

Perimeter length of beam – 140′ or 42672mm

Plinth beam size – 9” x 12”

if we consider,

Steel main bar diameter – 12mm@ 4Nos. (2top, 2bottom)

Stirrups – 8mm@150mm c/c spacing

Clear cover – 25mm (for all sides)

**So, the total steel qty of the plinth beam with stirrups & 2%wastage will be = 260.69kg.**

**iii). Quantity of steel in Column**

Column size = 9” x 9”

Total no. of column = 14nos.

if we consider,

Longitudinal bar diameter – 12mm@ 4Nos.

Stirrups – 6mm@150mm c/c spacing

Clear cover – 40mm

**So, the total steel qty of the column with stirrups & 5%wastage will be = 12.564 x 14 = 175.9kg.**

**The total weight of steel for the compound wall **

= footing steel qty + Plinth beam steel qty + Column steel qty – 43.98 + 260.69 + 175.9** = 480.57Kg**

**Step no.7 – Brick & Block masonry ****quantity**

The total length of the compound wall = site perimeter – main gate length

= ( 40′ x 2nos.) + (30′ x 2nos) – 10′

= 80′ = 60′ – 10′ = 130feet

**The total length of block masonry – compound wall length – (no. of column x width of a single column)**

= 130′ – ( 14nos – 0.75′) = 130′ – 10.5′ = 119.5′

Height of boundary wall = compound wall height – coping thickness

= 6′ – 4”(0.33′) = 5.67′

The volume of block masonry = l x h x thickness of the wall

= 119.5 x 5.67 x 0.6(0.5′) = 338.7825cft or 9.593Cum

Brick standard size = 190 x 90 x90mm

**No. of red bricks required = 4794Nos.**

Cement required in brick masonry – 12Nos.

Sand required in brick masonry – 88.99Cft

**No. of concrete blocks required = 712Nos.**

Cement required in block masonry – 3.516bags

Sand required in sand masonry – 25.86Cft

**Step no.8 – Coping concrete ****quantity**

Coping thickness – 4” (0.33′)

Concrete grade – M15

= Volume – coping length x width x thickness

= Brick masonry length x masonry width x coping thickness

= 119.5′ x 0.5′ x 0.33′ **= 19.717Cft or 0.558Cum.**

if we consider M15 concrete grade for coping

**So, cement required = 3.537bags**

**Sand required – 8.675cft**

**Aggregates required – 17.35cft**

**Step no.9 – Backfilling ****quantity**

i). For Footing – 48.69cft

ii). For plinth beam – 36.412cft

The total volume of backfilling – 48.69 + 36.412 = 85.102cft or 2.409cum.

**ESTIMATE OF BOUNDARY WALL**

**Total Concrete Volume – Footing + Plinth beam + Column**

= 0.743 + 2.675 + 1.561 = **4.979m³ or 175.83Cft**

For M20 Concrete Grade –

Cement Required – 40Bags

Sand Required – 2.091m³ or 73.85Cft

Aggregates Required – 4.182m³ or 147.68Cft

**Total Materials qty required for compound walls**

i). Total no. of cement required – Pcc + Masonary + RCC + Coping

= 12.70 + 12 + 40 + 3.537 = 68.237Bags

ii). Total volume of Sand required – Pcc + Masonary + RCC + Coping

= 31.22 + 88.99 + 73.85 + 8.675 = 202.735Cft

iii). Total volume of Aggregates required – Pcc + Masonary + RCC + Coping

= 62.30 + 147.68 + 17.35 = 227.33Cft

iv). Total steel required – Footing + plinth beam + column

= 43.98 + 260.69 + 175.9 = 480.57kg

v). Boulder for soling – 42Cft

vi). Bricks – 4794Nos.

**Materials & Labor cost of boundary walls **

**Materials Cost**

i). Boulder soling qty – 42cft.

Market Rate – 28/-Cft

**Total Amount = 42 x 28 = Rs.1176/-**

ii). Cement bag – 68.237Bags

Market Rate – 400/- bags (ultra-tech, Ambuja, acc)

**Total Amount = 68.237 x 400 = Rs.27,295/-**

iii). Sand qty – 202.735

Market Rate – 60/-Cft

**Total Amount = 202.735 x 60 = Rs.12164/-**

iv). Aggregates qty – 227.33

Market Rate – 55/-Cft

**Total Amount = 227.33 x 55 = Rs.12503/-**

v). Red Brick’s qty – 4794Nos.

Market Rate – 8/-nos.

**Total Amount = 4794 x 8 = Rs.38352/-**

vi). Steel qty – 480.57kg

Market Rate – 100/-kg.

**Total Amount = 480.57 x 100 = Rs.48057/-**

**Total Materials Cost – Boilder soling qty + Cement bag + Sand qty + Aggregates qty + Red Brick’s qty + Steel qty**

= 1176 + 27295 + 12164 + 12503 + 38352 + 48057 **= Rs.1,39547/-**

**Labor Cost**

i). Excavation qty – 285.365cft

Labor Rate – 7/-Cft

**Total Amount = 285.365 x 7 = Rs.1998/-**

ii). Boilder soling qty – 42cft

Labor Rate – 8/-Cft

**Total Amount = 42 x 8 = Rs.336/-**

iii). PCC work qty – 70.81cft

Labor Rate – 25/-Cft

**Total Amount = 70.81 x 25 = Rs.1770/-**

iv). Backfilling work qty – 85.102cft

Labor Rate – 5/-Cft

**Total Amount = 85.102 x 5 = Rs.425/-**

v). Rcc work qty – 175.83cft

Labor Rate – 65/-Cft

**Total Amount = 175.83 x 65 = Rs.11429/-**

vi). Brick masonry work – 338.78cft

Labor Rate – 25/-Cft

**Total Amount = 338.78 x 25 = Rs.8470/-**

vii). Coping work qty – 19.717cft

Labor Rate – 35/-Cft

**Total Amount = 19.717 x 35 = Rs.690/-**

**Total Labor Cost – Excavation + Boilder soling qty + PCC work + Backfilling work + ****Rcc work + Brick masonry work + Coping work**

= 1998 + 336 + 1770 + 425 + 11429 + 8470 + 690 = **Rs.25,118/-**

Total Cost (Materials + labor) = 1,39547 + 25118 =** Rs.1,64665/-**

Add 1.5% water & labor charge for curing –** Rs.2470/- **

Add contractor profit 10% **– Rs.16,466/-**

So, Total cost of Boundary Wall – **Rs.1,64665 + 2470 + 16,466 = Rs.1,83601/-**

**Compound wall cost per Rft = Total cost / Wall length**

** = 183601/140 = Rs.1311/-Rft**

**Compound wall cost per Sqft = Cost per Rft / Wall height above GL**

** = 1311/6.416 = Rs.205/-Sqft**

Thank you for taking the time to read this educational blog post about the Estimation of the Compound Wall. We hope that you found it informative and engaging. If you have any questions or comments, please feel free to leave comments in the comment section below. Don’t forget to check out our other educational posts on **myengineeringsupport.com **for more learning opportunities!

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