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Concrete quantity take-off


Materials
To be continued >
Introduction

A simple building with ground floor and basement

<project: Estimation10>

The building that will be used to calculate the quantities and cost estimation is shown at the figure on the right.
It consists of a ground floor and a basement (with one shear wall) while its foundation consists of spread footings tied by connecting beams as well as one strip foundation. The following paragraphs present the detailed quantity estimate of materials such as concrete, formworks, spacers, reinforcements, the reinforcement schedules’ optimization as well as the total quantity and cost estimate of the structural frame.

Phases of quantity estimation

 

Ground floor plan and Α-Α section

 

Concrete quantity estimation of ground floor

Beams – Slabs

    S1: 4,40 x 5,00 x 0,18                                                                   =  3,96

(2)     b1,b2: 2 x [(5,00-2 x 0,40) x 0,30 x 0,32]                              =  0,81

(3)    C1,2,3,4 (τμήμα κόμβου): 4 x (0,40 x 0,40 x 0,32)              =  0,20

     

        Total                                                                                             =  4,97 m3

 

Columns

(4)      C1,2,3,4: 4 x (0,40 x 0,40 x 2,50)                                           = 1,60 m3

 

Basement plan

Concrete quantity estimation of basement

 

Beams – Slabs

   S1: 4,40 x 5,00 x 0,18                                                                         =  3,96

(2)  b1,b2: 2 x [(5,00-2 x 0,40) x 0,25 x 0,32]                                      =  0,67

(3)   b3,sw5: 2 x [(4,40-2 x 0,40) x 0,25 x 0,32]                                  =  0,58

(4)   C1,2,3,4 (τμήμα κόμβου): 4 x (0,40 x 0,32)                                =  0,20

         Total                                                                                                 =  5,41 m3

Columns

(5)   C1,2,3,4: 4 x (0,40 x 0,40 x 2,50)                                             = 1,60 m3

(6)    SW5: 3,60 x 0,25 x 2,50                                                            =  2,25

         Total                                                                                             =  3,85 m3

 

Foundation plan

 

Concrete quantity estimation of foundation

   Footings f3,4,5:

         2 x (1,00 x 1,00 x 0,50) +3,00 x 0,85 x 0,50                                      = 2,275

 

(2)   CB1,2:

         2 x (3,60 x 0,30 x 0,60) + (2 x 0,30 x 0,10 x 0,30) +

         + 2 x (0,30 x 0,30 x 0,30)                                                                      = 1,368

 

(3)   SF: 4,40 x 1,00 x 0,30 + 4,40 x 0,30 x 0,30                                        = 1,716

 

(4)  Columns (additional volume due to foundation depth equal to

         0,60 m, compared to the footings’ depth which is 0,50m): 

         4 x (0,40 x 0,40 x 0,10) + 3,60 x 0,25 x 0,10                                      = 0,154

         (2 x 0,10 x 0,10 x 0,20 = 0,004)                                                                                   

         Sum                                                                                                        =  5,51 m3