Long Wall Short Wall Method

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

Read More: Center Line Method of Building Estimation

Long Wall Short Wall Method Of Estimation

The following is an example of a long wall short wall method for estimation of one room as give below,

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

Centre to centre length of long wall

= 4+ 0.45 + 0.45

=4.9m

Centre to centre length of short wall

= 3+ 0.45+ 0.45

= 3.9 m

Length for excavation:

=4.9 + 0.90

= 5.8 m

3.9 + 0.9

4.8m

Long wall

1^st footing length = 4.9+0.6

= 5.5m

2^nd Footing length = 4.9 + 0.5

= 5.4m

Plinth wall length = 4.9 + 0.4

=5.3 m

Short Wall

1^st Footing length = 3.9 – 0.6

=3.3m

2^nd 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

Read More: 12 Types of Estimate | Types of Estimation

Example Of Long Wall Short Wall Method

long wall short wall method solved examples

Item No.	Item Description (Work Details)	No	Length (L)	Breadth (B)	Height (H)	Quantity
1.	Earthwork in excavation for the foundation
	For Long Wall:	3	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:	3	3.3	0.9	1.1	9.80
	L = 4.2 – 2 x 0.45 = 3.3 m
	Short Wall:	4	2.3	0.9	1.1	9.11
	L = 3.2 – 2 x 0.45 = 2.3 m
	Wall in front of W. C	1	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:	3	8.3	0.9	0.2	4.48
	For Short Wall:	3	3.3	0.9	0.2	1.78
	For Short Wall:	4	2.3	0.9	0.2	1.66
	wall in front of W.C	1	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	3	7.9	0.5	0.3	3.56
	Second Step: L = 7.9 – 2 x 0.05 = 7.8m	3	7.8	0.4	0.3	2.81
	Third Step: L = 7.8 – 2 X 0.05 = 7.7M	3	7.7	0.3	0.85	5.89
	For Short Wall:
	First Step: L = 3.3 +2 x0.2 =m3.7m	3	3.7	0.5	0.3	1.67
	Second Step: L= 3.7+2×0.2=3.8	3	3.8	0.4	0.3	1.37
	Third Step: L=3.8+2X0.05=3.9M	3	3.9	0.3	0.85	2.98
	For Short Wall:
	First Step:L=2.3+2×0.2=2.7m	4	2.7	0.5	0.3
	Second Step: L=2.7+2×0.05=2.8m	4	2.8	0.4	0.3
	Third Step: L=2.8+2×0.05=2.9m	4	2.9	0.3	0.85
	Wall in front of W.C.:
	First Step: L =0.4+2×0.2=0.8m	1	0.8	0.5	0.3	0.12
	Second Step: L= 0.8+2X0.2=0.9m	1	0.9	0.4	0.3	0.11
	Third Step: L=0.9+2X0.05=1m	1	1.0	0.3	0.85	0.26
	Steps:
	First Step:	1	1.1	0.9	0.15	0.15
	Second Step:	1	1.1	0.6	0.15	0.10
	Third Step:	1	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:	3	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:	3	4.0	0.2	3.0	7.2
	L=3.9=2×0.05=4.0m
	For Short Wall:	4	3.0	0.2	3.0	7.2
	Wall in front of W.C.
	L-1+2×0.05=1.1.m	1	1.1	0.2	3.0	0.66
					Total Quantity=	28.74 m3
	Deduction For Doors & Windows
	D1	3	1.1	0.2	2.1	2
	D2	2	0.9	0.2	2.1	0.76
	G1	1	1.2	0.2	2.1	0.50
	W1	4	1.8	0.2	1.4	2.02
	W2	1	1.2	0.2	1.4	0.34
	W3	1	1.5	0.2	1.4	0.42
	V	2	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.	3	1.4	0.2	0.15	0.126
		2	1.2	0.2	0.15	0.072
		1	1.5	0.2	0.15	0.045
		4	2.1	0.2	0.15	0.25
		1	1.5	0.2	0.15	0.045
		1	1.8	0.2	0.15	0.054
		2	0.9	0.2	0.15	0.054
					Deduction=	(-)0.646 m3
	Net qunantity=28.74-5.57-0.646= 22.54m^3
4.	Smooth plaster inside the rooms and ceilings in c.m.1:3
	Plaster for walls:
	Drg. Room	4	4.0		3.0	48.0
	Bed Room	2	4.0		3.0	24.0
		2	3.0		3.0	18.0
	Kitchen	2	4.0		3.0	24.0
		2	3.0		3.0	18.0
	Bath	2	3.0		3.0	18.0
		2	1.7		3.0	10.2
	w.c.	2	1.3		3.0	7.8
		2	1.1		3.0	6.6
	in front of W.C	2	1.5		3.0	9.0
			1.1		3.0	6.6
	ceiling plaster
	Drg. Room	1	4.0	4.0		16.0
	Bed Room	1	4.0	3.0		12.0
	Kitchen	1	3.0	4.0		12.0
	Bath	1	4.0	1.7		5.1
	w.c.	1	1.3	1.1		1.43
	in front of W.C	1	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 a ventilator is less than 0.5m2 therefore no deduction is made
	For Door, half the number of faces is deducted.				Net Quantity=	219.37 m2

Important Notes

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

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