**How to Prepare Cost Estimate of Septic Tank | Quantity of Septic Tank**

In this Article today we will talk about the **How to Prepare Cost Estimate of Septic Tank | Quantity of Septic Tank | Estimate of Septic Tank | Septic Tank Calculator | How to Calculate the Cost of Septic Tank**** |** **Septic Tank Estimate Excel | Concrete Septic Tank Cost | Excavation of Septic Tank | Brickwork in Septic Tank**

**How to Prepare Cost Estimate of Septic Tank:**

Before starting this estimate you must read this article: **How to Calculate the Size and Capacity of Septic Tank | Formula**

**Septic Tank Detail:**

**Plan Size:**11′-0″ X 7′-6″

**Depth:**– 6′-9″

**Septic Tank Items:**

**Earth Work Excavation****Filling Quantity of Septic Tank****P.C.C****Reinforced Concrete Work****Reinforcement****Brick Work**– 230mm:**Plastering Septic Tank Calculator****Manhole**

**How To Prepare Cost Estimate of Septic Tank:**

**Description:**

**Reinforced Concrete Work:**

**slab**,

**lintel**, roof slab, lintel and sunshade excluding fabrication of RCC items and including cost and conveyance of all materials labor, etc.,

**Septic Tank Calculator**

**Reinforcement:**

**R.C.C**work including straightening, cutting, bending, placing in position & binding all TMT bars

**Septic Tank Estimate Excel**

**Centering and Shuttering work**:

**Concrete Septic Tank Cost**

**Earthwork**:

**Earthwork**in excavation including disposal of the earth; disposed earth to be leveled and neatly dressed.

**Excavation of Septic Tank**

**How To Prepare Cost Estimate of Septic Tank:**

**P.C.C: **

**Sand Filling:**

**Excavation of Septic Tank**

**How To Calculate the Cost of Septic Tank?**

Let us estimate the **brick masonry septic tank **as shown below. **Brickwork in Septic Tank**

**1. Excavation:**

Volume of **excavation**

= [length × breadth × depth]

Here, the length & breadth of excavation is the same as that of PCC.

= [ 11ft. × 7.5ft. × 6.75ft.]

= **556.88 cu ft.**

**2. PCC:**

__Given data:__

__Given data:__

The extra length of **PCC** on all 4 sides of the **septic tank** is 6″ (0.5ft.)

Length = 11ft.

Breadth = 7.5ft.

Thickness= 5″ = 0.416 ft.

(As 1ft. = 12 inches)

**Brickwork in Septic Tank**

**Volume of PCC:**

= [length × breadth × thickness]

= [ 11ft. × 7.5ft. × 0.416ft.]

=** 34.32 cu ft.**

**3. Brick masonry:**

#### **a. **** 9″ thick outer wall:**

#### __Given data:__

__Given data:__

Length = 10ft.

Width = 9″ = 0.75 ft.

(As 1ft. = 12 inches)

Height = 6ft.

Let us find the vol. of brick masonry by the **longwall short wall method**.

**The volume of the longwall:**

= [2nos.×( length × width × height)]

= [2nos. × ( 10 ft. × 0.75 ft. × 6 ft.)]

= [ 2nos. × 45 cu ft.]

= **90 cu ft.**

**The volume of the short wall:**

= 2nos. × [{ length} × width × height]

= 2nos. × [{6.5 ft.- (2nos.× 0.75 ft.)} × 0.75 ft. × 6 ft.]

= 2nos. × [{5 ft.} × 0.75 ft. × 6 ft.]

= 2nos. × [ 22.5 cu ft.]

= **45 cu ft.**

**The total volume of 9″ thk. brick wall**

= the volume of { longwall + short wall}

= {90 cu ft. + 45 cu ft.}

= **135 cu ft.**

**b. 4″ thick inner partition walls:**

**Baffle wall-1**

The volume of the baffle **wall**-1

= [ {length} × width × (height)]

= [{ 6.5 ft.- (2nos.× 0.75 ft.)} × 0.33 ft. × (6 ft. – 1.5 ft.)]

= [{5 ft.} × 0.33 ft. × (4.5 ft.)]

= **7.425 cu ft.**

The volume of wall-2

= [ {length} × width × height]

= [{6.5 ft.- (2nos.× 0.75 ft.)} × 0.33 ft. × 6 ft.]

= [{5 ft.} × 0.33 ft. × 6 ft.]

= **9.90 cu ft.**

**The total volume of 4″ thk. brick wall**

= the volume of { wall-1+ wall-2}

= {7.425 cu ft. + 9.9 cu ft.}

= **17.33 cu ft. **

**4. Plastering:**

**a. For 9″ brick wall:**

Area of **plastering **

= 2nos. × [ (area of a longwall) + (area of a short wall)]

= 2nos. × [ (10ft. × 6ft.) + (5ft. × 6ft.)]

= 2nos. × [ 60 sq ft. + 30 sq ft.]

= **180 sq ft.**

**Note:** Length & height of the longwall & short walls are taken for area calculation.

**b. For 4″ inner wall**

Area of plastering

= 2 sides. × [ (area of wall-1) + (area of wall-2)]

= 2 sides × [ ( 5ft. × 4.5ft.) + ( 5ft. × 6ft.)]

= 2 sides × [ 22.5 sq ft. + 30 sq ft.]

= **105 sq ft.**

**c. For floor base**

Floor area plastering

= [ {length} × { breadth.}]

= [{10 ft. – (2nos. × 0.75ft.)} × {6.5ft. – (2nos. × 0.75ft.)}]

= [ {10ft. – 1.5 ft.} × { 6.5ft. – 1.5ft.}]

= [8.5ft. × 5ft.]

= **42.5 sq ft.**

**Total plastering area**

= plastering area of [ 9″ wall + 4″ wall + floor]

= [180 sq ft. + 105sq ft. + 42.5 sq ft.]

= **327.5 sq ft.**

**5. RCC slab:**

The area of the **RCC slab **

= [length × breadth ]

= [ 10ft. × 6.5 ft.]

= **65.0 sq ft.**

**6. Miscellaneous:**

Inlet & outlet pipe of 4″ dia = 2 nos.

Manhole cover with frame = 1no.

Vent pipe = 1no.

Let us calculate the **cost of a brick masonry septic tank** as shown below.

**Estimation and Rate Analysis of a Septic Tank:**

Here, we will estimate the **septic tank in sheet format** as given below.

Sl. No. |
Description |
Nos. |
Length in ft. |
Breadth in ft. |
Depth in ft. |
Qty. |
Total Qty. in c ft/sq ft. |

1. | Earthwork Excavation | 1 | 11 | 7.5 | 6.75 | 556.88 | 556.88 |

2. | M20 grade PCC | 1 | 11 | 7.5 | 0.416 | 34.32 | 34.32 |

3. | 9″ brick masonry in 1:6 CM. | ||||||

3a. | Long wall | 2 | 10 | 0.75 | 6.0 | 45 | 90 |

3b. | Short wall | 2 | 5 | 0.75 | 6.0 | 22.5 | 45 |

Total volume of 9″ brick masonry | 135.0 | ||||||

4. | 4″ brick masonry in 1:5 CM. | ||||||

4a. | Baffle wall-1 | 1 | 5 | 0.33 | 4.5 | 7.425 | 7.425 |

4b. | Wall-2 | 1 | 5 | 0.33 | 6.0 | 9.90 | 9.90 |

Total volume of 4″ brick masonry | 17.33 | ||||||

5. | 12mm thick Plastering in 1:4CM | ||||||

5a. | 9″ long wall | 2 | 10 | —— | 6.0 | 60 | 120 |

5b. | 9″ short wall | 2 | 5 | —— | 6.0 | 30 | 60 |

5c. | 4″ baffle wall-1 (on 2 sides) | 2 | 5 | —— | 4.5 | 22.5 | 45 |

5d. | 4″ wall-2 (on 2 sides) | 2 | 5 | —— | 6.0 | 30.0 | 60 |

5e. | Floor area. | 1 | 8.5 | 5.0 | —– | 42.5 | 42.5 |

Total area of plastering | 327.50 | ||||||

6. | RCC slab in M25 grade concrete | 1 | 10 | 6.5 | —– | 65 | 65 |

7. | Manhole cover & frame of 2ft × 2ft size. | 1 no. | |||||

8. | Vent. pipe | 1 no. | |||||

9. | 4″ dia. inlet & outlet pipe | 2 nos. |

**Now, the cost of a septic tank is calculated in table format.**

Sl. no. |
Item. |
Qty. |
Rate. in INR. |
Unit. |
Cost in INR. |

1. | Excavation | 556.99 | 11/- | Cu ft. | 6,126.89 |

2. | PCC | 34.32 | 207.15/- | Cu ft. | 7,109.39 |

3. | 9″ brick masonry. | 135 | 159.52/- | Cu ft. | 21,535.20 |

4. | 4″ brick masonry. | 17.33 | 174.17/- | Cu ft. | 3,018.37 |

5. | Plastering. | 327.5 | 18.10/- | Sq ft. | 5,927.75 |

6. | RCC slab | 65 | 210/- | Sq ft. | 13,650.00 |

7. | Man hole. | 1 | 1800/- | No | 1,800.00 |

8. | Vent pipe. | 1 | 450/- | No | 450.00 |

9. | Inlet & outlet pipe. | 2 | 350/- | No | 700.00 |

6. | The cost of septic tank = | 60,317.40 | |||

7. | Add 12% for contractors profit = | 7,238.09 | |||

10. | The total cost of septic tank = |
67,555.49 |

**OTHER POSTS:**

### Structural Load Calculation on Beam Colum Slab and Staircase

### How to Calculate Water Tank Capacity for a Building | Size for a Building

### Types of Structural Cracks in Concrete Beams and Their Causes

### Bar Bending Schedule of Lintel Beam | Typical Beam | Detailed Beam

### How To Layout a Building or Foundation | Construction Layout Techniques

**Roles and Responsibilities of Site Civil Engineer**

**Conclusion:**

Full article on **How to Prepare Cost Estimate of Septic Tank | Quantity of Septic Tank | Estimate of Septic Tank | Septic Tank Calculator | How to Calculate the Cost of Septic Tank**** |** **Septic Tank Estimate Excel | Concrete Septic Tank Cost | Excavation of Septic Tank | Brickwork in Septic Tank****.** Thank you for the full reading of this article in “**The Civil Engineering**” platform in English. If you find this post helpful, then help others by sharing it on social media. **If any formula of BBS is missing from this article please tell me in comments.**

Very good

Thanks for comment

Why you did not put Peebles sand and charcoal

after the leaching so that water coming out from the last one will be very clean

Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

👍️

My name is kaleb Belihu Alemu i m Construction Technology and management Engineer so i’m interested gother information from this page

Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

Sir plz give cost estimate for swimming pool also LBH 18m,10m,1.52m

Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar