Prev Next


Total = Tk. 14,425.55

Considering 50 times use = Tk. 288.51

(x) Labour for fitting fixing steel shutter and
props in position and removing etc.:

1 x 8'-9" x 4'-0"= 35.00 sft

2 x 8'-9" x 1'-0"= 17.50 sft

9 x 4'-0" x 6"= 18.00 sft

= 70.50 sft @ Tk. 15.00 per sft = Tk. 1,057.50

  1. Hessian for water-tight for 70.50 sft @ Tk. 1.25 per sft = Tk. 88.13
  2. Curing for 28 days for surface area 70.50 sft @ Tk. 2.67 per sft = Tk. 188.24

Grand total = Tk. 2,365.43

Cost per sft = Tk. 33.55

Cost per sqm = Tk. 361.13

C-20 WAFFEL or RIBED SLAB using STEEL shutter

Slab area: 32'-0" x 22'-0", spacing of ribs: 2'-0" c/c both ways.

Shuttering area: 311.42 sqm

  1. Slab shutter area

16x11x1'-4"x1'-4"= 28.93 sqm

Number of uses, wastage and additional labor 25%= 7.23 sqm

Unit rate from C-16= 36.16 sqm @ Tk. 440.57 per sqm = Tk. 15,931.01

  1. Beam Side area

12x32'-0"x8"= 23.91 sqm

12x2x32'-0"x1'-8"= 119.20 sqm

17x22'-0"x8"= 23.29 sqm

17x2x22'-0"x1'8"= 116.09 sqm

282.49 sqm

Number of uses, wastage and additional labor 25%= 70.62 sqm

Unit rate from C-15= 353.11 sqm @ Tk. 376.42 per sqm = Tk. 132,917.67

Grand total = Tk. 148,848.68

cost per sqm = Tk. 477.97

C-21 Arces, Domes, Vaults up to 8 m span

Details of cost of semi circular dome = 6 m dia (double shutter)

Surface Area= 56.52 sqm

A.

  1. 22 BWG steel sheet:

Total surface area with 5% wastage 59.35 sqm

@ 5.5 kg per sqm= 326.43 kg @ Tk. 60.50 per kg = Tk. 19,749.02

  1. Cutting , bending, welding and grinding and fixing on angle 326.43 kg @ Tk. 8.00 per kg = Tk. 2,611.44
    truss
  1. Deduct the resale value 30 % of the original = Tk. 5,924.71

Total = Tk. 16,435.75

For single use cost per sqm = Tk. 290.80

B. Steel frame

Angle truss of max depth 400 mm at midspan and 150 mm at ends, top cord curved as required arranged radially @30 degree c/c, top and bottom cord of the truss shall be 50X50X5 mm angle and diagonal and vertical shall be 40X40X4 mm angle (5% wastage)

50X50X5=4.71 mX2X12=113 [email protected] kg per meter 486.47 kg

40X40X4=4.71 m/0.5 m c/c =18 no X0.25 m X12=54 [email protected] kg per 141.75 kg

628.22 kg @ Tk. 55.00 per kg = Tk. 34,552.10

Deduct the resale value 40 % of the original = Tk. 13,820.84

Fabrication and erection of the angle truss and base beam= 628.22 kg @ Tk. 20.00 per kg = Tk. 12,564.40

Total = Tk. 33,295.66

For single use cost per sqm = Tk. 589.10

C. Props

Steel props as lattice column 750 mm X750 mm square size at the center of the dome using MS angle and assuming a height of 9 m

vertical angle 50X50X5: 4X9=36 mX4.17 kg per m= 175.14

Lace angle 40X40X5: 4X(0.9X9+1.27*9)=86.9 [email protected] kg per m= 372.80 kg