Let us now calculate the cost of rubble soling as shown in the below drawing.
Given data:
Length of the rubble soling = 15 ft.
Width of the rubble soling = 8 ft.
The thickness of the rubble soling = 0.75 ft.
The total volume of the rubble soling
= [length × width × thickness]
= [15 ft. × 8 ft. × 0.75 ft.]
= 90 cu ft.
Before proceeding further, go through the article 👇
👀 What is rubble (boulder) soling? - their purpose & thumb rules in soling calculations.
So that you will understand the calculation concept clearly, without any questions.
A. Material calculation:
1. Volume of rubble stone:
The required vol. of stone
= [1.25 × the vol. of rubble soling]
= [1.25 × 90 cu ft.]
= 112.50 cu ft.
2. Volume of moorum:
The required vol. of moorum
= 15% of the vol. of rubble stone.
= [15 × 112.5 cu ft. ÷ 100]
= 16.875 cu ft.
B. Labor calculation:
The labor rate per cu ft. of the rubble soling work ranges from INR 9/- to 15/- depending upon the region.
Let us consider an average rate of INR 12/- per cu ft.
The total cost of labor for rubble soling
= total vol. of rubble soling in cu ft. × labor rate/ cu ft.
= 90 cu ft. × 12/-
= INR 1,080/-
Note: Labor rate inclusive of moorum spreading, compaction, & water flooding.
Now, let us calculate the total cost of rubble soling in table format.
|
Sl. no. |
Item. |
Qty. |
Rate. in INR. |
Unit. |
Cost in INR. |
|
1. |
Rubble stone |
112.50 |
33/- |
Cu ft. |
3,712.50 |
|
2. |
Moorum |
16.88 |
12/- |
Cu ft. |
202.56 |
|
3. |
Rent of compactor |
Lump-sum |
200.00 |
||
|
4. |
Water for flooding |
Lump-sum |
100.00 |
||
|
5. |
Miscellaneous |
Lump-sum |
100.00 |
||
|
6. |
The material cost = |
4,315.06 |
|||
|
7. |
Add 5% wastage = |
215.75 |
|||
|
8. |
Total material cost = |
4,530.81 |
|||
|
9. |
Labour cost = |
1,080.00 |
|||
|
10. |
The total cost of rubble soling work = |
5610.81 |
|||
Note: To get accurate results, insert your regional market rate of materials & labor, in the above table.
a. The cost of rubble soling /cu ft.
= [total rubble soling cost ÷ total soling vol. in cu ft.]
= [5,610.81 ÷ 90]
= INR 62.34 /cu ft.
b. The cost of rubble soling /cum.
= [62.34 × 35.3147]
= INR 2,201.60 / cum.
( As 1cum = 35.3147 cu ft.)
Note:
If the work is handed over to any contractor, you have to add 10% extra for his profit.
To go through rate analysis & cost-related articles, click here.
Thank you for going through this article❤. Have a good day😄.
