Coimbatore Civil Engineer

24/01/2016

DESIGN MIX:
M10 ( 1 : 3.92 : 5.62)
Cement : 210 Kg/ M 3
20 mm Jelly : 708 Kg/ M 3
12.5 mm Jelly : 472 Kg/ M 3
River sand : 823 Kg/ M 3
Total water : 185 Kg/ M 3

Fresh concrete density: 2398 Kg/M 3
M20 ( 1 : 2.48 : 3.55)
Cement : 320 Kg/ M 3
20 mm Jelly : 683 Kg/ M 3
12.5 mm Jelly : 455 Kg/ M 3
River sand : 794 Kg/ M 3
Total water : 176 Kg/ M 3
Admixture : 0.7%

Fresh concrete density: 2430 Kg/ M 3
M25 ( 1 : 2.28 : 3.27)
Cement : 340 Kg/ M 3
20 mm Jelly : 667 Kg/ M 3
12.5 mm Jelly : 445 Kg/ M 3
River sand : 775 Kg/ M 3
Total water : 185 Kg/ M 3
Admixture : 0.6%
Fresh concrete density: 2414 Kg/ M 3
Note: sand 775 + 2% moisture, Water185 -20.5 =
164 Liters,
Admixture = 0.5% is 100ml
M30 ( 1 : 2 : 2.87)
Cement : 380 Kg/ M 3
20 mm Jelly : 654 Kg/ M 3
12.5 mm Jelly : 436 Kg/ M 3
River sand : 760 Kg/ M 3
Total water : 187 Kg/ M 3
Admixture : 0.7%
Fresh concrete density: 2420 Kg/ M 3
Note: Sand = 760 Kg with 2% moisture
(170.80+15.20)

24/01/2016

CONCRETE GRADE:
M5 = 1:4:8
M10= 1:3:6
M15= 1:2:4
M20= 1:1.5:3
M25= 1:1:2

24/01/2016

WEIGHT OF ROD PER METER LENGTH:
DIA WEIGHT PER METER

6mm = 0.222Kg
8mm = 0.395 Kg
10mm = 0.616 Kg
12mm = 0.888 Kg
16mm = 1.578 Kg
20mm = 2.466 Kg
25mm = 3.853 Kg
32mm = 6.313 Kg
40mm = 9.865 Kg

24/01/2016

CLEAR COVER TO MAIN REINFORCEMENT:
1.FOOTINGS = 50 mm
2.RAFT FOUNDATION.TOP = 50 mm
3.RAFT FOUNDATION.BOTTOM/SIDES = 75 mm
4.STRAP BEAM = 50 mm
5.GRADE SLAB = 20 mm
6.COLUMN = 40 mm
7.SHEAR WALL = 25 mm
8.BEAMS = 25 mm
9.SLABS = 15 mm
10.FLAT SLAB = 20 mm
11.STAIRCASE = 15 mm
12.RET. WALL = 20/ 25 mm on earth
13.WATER RETAINING STRUCTURES = 20/30 mm

18/12/2014

25 Unconventional Homes Make The Most Of A Unique Space Posted By MMK on Oct 4, 2014 | 0 comments 450 Flares Twitter 98 Facebook 0 Google+ 52 Pin It Share 300 Email -- 450 Flares × With spaces becoming limited and more emphasis on design, people are getting extremely clever with their home designs.…

14/09/2014

21/04/2014

08/04/2014

Design of Concrete Structure (T-shaped beam)

30/03/2014

http://www.cocena.org/

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30/03/2014

Rusty Finish interior

05/04/2013

Q. Which is preferred in Reinforced Concrete Design?
a) Balanced Reinforced Concrete Design
b) Under Reinforced Concrete Design
c) Over Reinforced Concrete Design
d) None of these