Long Wall And Short Wall Method

Long-Wall And Short-Wall Method

The long wall and short wall methods are used to estimate the qty of different work. In this method, the longer walls in the building (generally in 1 direction) are considered as long walls & measured from out to out and the shorter walls in the perpendicular direction to the long walls are considered as short walls and are measured from in- to-in for the particular layer of the work.

Long Wall And Short Wall Method Of Estimation

The following is an example of the long wall and short wall method for estimation of 1 room as give below,

Length of the short wall into in = Centre to center length – Half breadth 1 side – Half breadth on another side.

Centre to center length of the long wall

= four + 0.45 + 0.45

=4.9m

Centre to center length of the short wall

= Three + 0.45+ 0.45

= 3.9 m

Length for the excavation-

=4.9 + 0.90

= 5.8 m

3.9 + 0.9

4.8m

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Long wall

First footing length = 4.9+0.6

= 5.5m

Second Footing length = 4.9 + 0.5

= 5.4m

Plinth wall length = 4.9 + 0.4

=5.3 m

Short Wall

First Footing length = 3.9 – 0.6

=3.3m

Second footing length = 3.9 – 0.5

=3.4m

Plinth wall = 3.9 – 0.4

= 3.5m

Long wall = 4.9 + 0.3

= 5.2m

Short Wall = 3.9 – 0.3

= 3.6m

Example Of Long Wall And Short Wall Method;

long wall and short wall method solved examples

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Item No.	Item Description (Work Details)	No	Length (L)	Breadth (B)	Height (H)	Quantity
1-	Earthwork in excavation for the foundation
	For Long Wall:	Three	8.3	0.9	1.1	24.65
	L = (4+3+2×0.2) + 2×0.45 = 8.3 m
	H = 0.3 + 0.3 + 0.3 + 0.2 = 1.1 m
	Short Wall:	Three	3.3	0.9	1.1	9.80
	L = 4.2 – 2 x 0.45 = 3.3 m
	Short Wall:	Four	2.3	0.9	1.1	9.11
	L = 3.2 – 2 x 0.45 = 2.3 m
	Wall in front of W. C	One	0.4	0.9	1.1	0.40
	L = (1.1 + 0.2) – 2 x 0.45 = 0.4 m
						43.96 m3
or	Brickbat Cement Concrete ( 1:4:8) for foundation
	For Long Wall:	Three	8.3	0.9	0.2	4.48
	For Short Wall:	Three	3.3	0.9	0.2	1.78
	For Short Wall:	Four	2.3	0.9	0.2	1.66
	wall in front of W.C	One	0.4	0.9	0.2	0.07
						7.99 m3
2-	Brick masonry up to plinth in c.m.1:6
	For Long Wall:
	First Step: L= 8.3 – 2 x 0.2 = 7.9m	Three	7.9	0.5	0.3	3.56
	Second Step: L = 7.9 – 2 x 0.05 = 7.8m	Three	7.8	0.4	0.3	2.81
	Third Step: L = 7.8 – 2 X 0.05 = 7.7M	Three	7.7	0.3	0.85	5.89
	For Short Wall:
	First Step: L = 3.3 +2 x0.2 =m3.7m	Three	3.7	0.5	0.3	1.67
	Second Step: L= 3.7+2×0.2=3.8	Three	3.8	0.4	0.3	1.37
	Third Step: L=3.8+2X0.05=3.9M	Three	3.9	0.3	0.85	2.98
	For Short Wall:
	First Step:L=2.3+2×0.2=2.7m	Four	2.7	0.5	0.3
	Second Step: L=2.7+2×0.05=2.8m	Four	2.8	0.4	0.3
	Third Step: L=2.8+2×0.05=2.9m	Four	2.9	0.3	0.85
	Wall in front of W.C.:
	First Step: L =0.4+2×0.2=0.8m	One	0.8	0.5	0.3	0.12
	Second Step: L= 0.8+2X0.2=0.9m	One	0.9	0.4	0.3	0.11
	Third Step: L=0.9+2X0.05=1m	One	1.0	0.3	0.85	0.26
	Steps:
	First Step:	One	1.1	0.9	0.15	0.15
	Second Step:	One	1.1	0.6	0.15	0.10
	Third Step:	One	1.1	0.3	0.15	0.05
	For step L= D1=1.1m
						24.99 m3
3-	Brick masonry above plinth up to slab level in c.m. 1:6
	For Long Wall:	Three	7.6	0.2	3.0	13.68
	L=7.7-2×0.05=7.6m
	H=0.7+1.4+0.9=3.0m
	For Short Wall:	Three	4.0	0.2	3.0	7.2
	L=3.9=2×0.05=4.0m
	For Short Wall:	Four	3.0	0.2	3.0	7.2
	Wall in front of W.C.
	L-1+2×0.05=1.1.m	One	1.1	0.2	3.0	0.66
					Total Quantity=	28.74 m3
	Deduction For Doors & Windows
	D1	Three	1.1	0.2	2.1	2
	D2	Two	0.9	0.2	2.1	0.76
	G1	One	1.2	0.2	2.1	0.50
	W1	Four	1.8	0.2	1.4	2.02
	W2	One	1.2	0.2	1.4	0.34
	W3	One	1.5	0.2	1.4	0.42
	V	Two	0.6	0.2	0.6	0.14
					Deduction=	(-)5.57 m3
	Deduction for lintels above door and windows with 15cm bearing at each end.	Three	1.4	0.2	0.15	0.126
		Two	1.2	0.2	0.15	0.072
		One	1.5	0.2	0.15	0.045
		Four	2.1	0.2	0.15	0.25
		One	1.5	0.2	0.15	0.045
		One	1.8	0.2	0.15	0.054
		Two	0.9	0.2	0.15	0.054
					Deduction=	(-)0.646 m3
	Net qty=28.74-5.57-0.646= 22.54m^3
4-	Smooth plaster inside the rooms and ceilings in c.m.1:3
	Plaster for the walls:
	Drawing Room	Four	4.0		3.0	48.0
	Bed Room	Two	4.0		3.0	24.0
		Two	3.0		3.0	18.0
	Kitchen	Two	4.0		3.0	24.0
		Two	3.0		3.0	18.0
	Bath	Two	3.0		3.0	18.0
		Two	1.7		3.0	10.2
	w.c.	Two	1.3		3.0	7.8
		Two	1.1		3.0	6.6
	in front of W.C	Two	1.5		3.0	9.0
			1.1		3.0	6.6
	ceiling plaster
	Drawing. Room	One	4.0	4.0		16.0
	Bed Room	One	4.0	3.0		12.0
	Kitchen	One	3.0	4.0		12.0
	Bath	One	4.0	1.7		5.1
	w.c.	One	1.3	1.1		1.43
	in front of W.C	One	1.5	1.1		1.65
					Total Quantity=	238.38 m2
	Deduction for Door/ Window
	D1	5/2	1.1		2.1	5.78
	D2	4/2	0.9		2.1	3.78
	G1	2/2	1.2		2.1	2.52
	W1	4/2	1.8		1.4	5.04
	W2	1/2	1.2		1.4	0.84
		1/2	1.5		1.4	1.05
					Total Deduction=	(-)19.01 m2
	The area of the ventilator is less than 0.5m2 therefore no deduction is made
	For Door, half the number of the faces is deducted.				Net Quantity=	219.37 m2

Important Notes;

1. The area of the ventilation is less than 0.5 sq m, therefore no deduction is made.
2. For Doors, Half the number of the faces is deducted.
3. For calculation of the internal plaster, inner doors have 2 faces and the external door has 1 inner face
4. For calculation of the internal plaster, windows have 1 internal face.
5. for windows, half the number of the faces is deducted.

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