What’s The Thumb Rule And Estimation Of Thumb Rules In Civil Engineering
What Is The Thumb Rule |Estimation Of Thumb Rules In Civil Engineering| Type of Structure In Thumb Rule |Type of Publishing/Plastering In Thumb Rule
What Is The Thumb Rule And Estimation of Thumb Rules In Civil Engineering
This article will discuss the thumb rule definition. estimation of the thumb rule. types of thumb rule in civil engineering. What Is The Thumb Rule And Estimation Of Thumb Rules In Civil Engineering? What Is The Thumb Rule |Estimation Of Thumb Rules In Civil Engineering| Type of Structure Thumb RuleType of Publishing/Plastering In Thumb Rule
What Is the Thumb Rule?
Rule of thumb At first, we’ve to understand the meaning of the thumb rule before jumping into the discussion. Thumb rules are “ Approximate Value ”. Thumb Rules has no unit systems We use the thumb rules for nearly every computation like concrete computation, force estimation, the material demand for trouncing, destruction computation, and brickwork computation. The thumb rule means the approximate value, not 100 percent confirm the value.
Manpower productivity by Thumb Rule
Thumb rules will be useful to calculate the total force needed for your coming schedule.
Manpower Activity
Wall publishing 120 Sft
Mason – 01
Manly mazdoor –O.75
Womanish Mazdoor –O.5
Brick Work 45 Boxy bases
Mason – O1
Male mazdoor – O1
Womanish Mazdoor –O.5
Ceiling Publishing 90 Forecourt
Mason – O1
Male mazdoor –O.75
womanish Mazdoor –O.5
Shuttering Work 11 Sqm
Carpenter-2.25
Foreman-0.2
coadjutor-2.25
Steel Work 100 Kg
Bar Bender – 1
Nos coadjutor – 1 No’s
Tile Work 10 Sqm
Tile Mason – 1 No’s
Coadjutor – 1 No’s
Womanish Mazdoor –1.75
Block Work 2 m³
Mason – 2
Manly mazdoor –1.75
Earth Digging 1000 Cft
Manly Coolie – 5
Nos womanish Coolie – 4 No’s
Thumb rule for concrete work
The concrete constituents will vary grounded on the blend rate.
For Example,
If the Plinth area is 100Sq.ft
( 10 x 10) and the needed
concrete volume is 100 x0.04 = 4 m³ with M5 blend rate means
Now from the below table which is for 1 m³
The needed Concrete Constituents for 4 m³ M5
Cement –2.77 x 4 = 11.08 bags
Beach –0.48 x 4 = 1.92 m³
Coarse total = 0.96 x 4 = 3.84 m³
Thumb Rule of Concrete material
The demand Grade rate of Cement in Bags and Sand in m³ Coarse summations in m³
Grade Ratio Cement Sand Aggregates
M5 1:5:10 2.77 0.48 0.96
M7.5 1:4:8 3.41 0.47 0.95
M10 1:3:6 4.44 0.46 0.92
M15 1:2:4 6.34 0.44 0.88
M20 1:0.5:5 8.06 0.42 0.84
M25 1:1:2 11.09 0.39 0.77
Thumb rule for Plastering Work For trouncing
The material volume will vary grounded on the different blend rates like concrete and the thumb rule for trouncing work Mentioned
Type of Publishing/Plastering Mix rate Consistence in mm Cement Bags Sqm sand m³/ Sqm
Inner trouncing/Plastering 1.3 1.5 0.16 0.017
External trouncing/Plastering 1.4 2.0 0.17 0.024
Rough trouncing/Plastering 1.5 1.6 0.11 0.020
Ceiling trouncing/Plastering 1.2 1.2 0.17 0.012
Thumb rule for Brick Work
1-The size of the slip up 190 mm x 90 mm x 90 mm
2-Number of bricks per boxy meter( m3) = 500 No
Mix Ratio and Brick Works Thickness Mortor thickness (mm) Cement (Bags) Sand m³
1:6 200 mmThickness10 1.4/m³ 0.30
1:5 200 mm Thickness 10 1.7/ m³ 0.25
1:4 100 mm Thickness 10 0.15/m² 0.035
1:5 200 mm Thickness Block 10 0.15/m³ 0.02
Thumb rule for RCC Structure/Steel
The sword brings veritably preciousness compared to other construction material and the redundant purchase of sword demand impact the design budget. A good developer restrains sword application.
Type of Steel Structure Kg/ Sqft
Domestic structure 2.5 to4.5
marketable structure 4.5 to5.5
Mass Project Tall or heavy Structure 6 to 8
The Rebar % against concrete volume at all times based on the structural element and the minimum and maximum % of Rebar used in all construction work as mentioned as per IS standard.
The Thumb rule for Rebar in RCC
Structural Element % of Rebar in Concrete
Rebar in the Slab O1 Percent
Rebar in the Beam O1 Percent to 2Percent
Rebar in the Column 2.50Percent
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