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Formwork quantity take-off


Materials
To be continued >
Introduction

Formwork quantity take-off of ground floor

 

Beams Slabs

 

m2

S1:

3,80 x 5,00 – 4 x 0,40 x 0,10 + 2 x 3,60 x 0,18

=

20,136

b1,b2:

2 x 5,00 x 0,50 + 2 x (5,00-2 x 0,40) x 0,32 +
+
2 x 4,20 x 0.30

 

=


10,208

Columns (joints areas):

4 x 0,40 x 0,50 + 4 x 0,40 x 0,32 + 4 x 0,10 x 0,32

=

1,440

 

Total

=

31,784

Columns:

 

 

 

4 x (0,40 x 0,40 x 2,50)

=

16,000

Formwork quantity take-off of basement


BeamsSlabs

 

m2

S1:

4,50 x 3,90 - 4 x (0,15 x 0,15)

=

17,460

b1,b2:

2 x [5,00 x 0,50 +4,20 x 0,32] +4,20 x 0,25

=

9,788

b3:

4,40 x 0,50 + 3,60 x 0,32 +3,60 x 0,25

=

4,252

Shear wall sw5:

4,40 x 0,50 + 3,60 x 0,32

=

3,352

internal column sides:

4 x 2 x 0,15 x 0,32)

=

0,384

 

Total

=

35,236

 

 

 

Columns:

4 x (0,40 x 0,40 x 2,50) – 2 x (0,25 x 2,50)

=

14,750

Shear wall sw5:

2 x (3,60 x 2,50)

=

18,000

 

Total

=

32,750

Formwork quantity take-off of foundation


 

 

m2

Footings F3,4,5:

0,50 x [5,00 + 2 x 1,00 + 0,30 x 2]

=

5,85

Cb1,2:

2 x [0,70 x0,10 + 4,30 x 0,60 +0,30 x 0,30]
2 x [0,30 x0,10 + 3,60 x 0,60 +0,30 x 0,30]

=

10,04

Sf4:

(3,80 + 4,40) x 0,30 + (3,60 + 4,40) x 0,30

=

4,86

Columns:

2 x 2 [0,10 x 0,30 +0,10 x 0,10] +
+(4,40+3,60 ) x 0,10

=

0,96

 

Total

=

21,71

Spacers quantity take-off

RULES FOR ESTIMATING THE QUANTITTIES OF SPACERS AND REBAR CHAIRS
Superstructure and foundation beams:       (2 m of ‘linear spacers’ + 2 ‘pieces of point support’) in every meter of ‘clear beam length’
Columns:       (8 ‘pieces of point support’) per column
Shear walls:       2 m of ‘linear spacers’ in every meter of the shear wall’s length
Foundation slabs and footings:      (1.25 m of ‘linear spacers’) in every square meter of ‘clear slab area’
Slabs’ free edges:       (1 m of ‘linear spacers’ + 1m of ‘rebar chairs’ + 1 ‘piece of point support’) in every edge meter
Slabs’ supports:       1 m of ‘rebar chairs’ per meter of ‘every slab support’