Civil Engineering Standard Data

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CIVIL ENGNEERING STANDARD DATAS

Design Mix: M10 ( 1 : 3.92 : 5.62) Cement : 20 mm Jelly : 12.5 mm Jelly : River sand : Total water : Fresh concrete density: M20 ( 1 : 2.48 : 3.55) Cement : 20 mm Jelly : 12.5 mm Jelly : River sand : Total water : Admixture : Fresh concrete density:

210 Kg/ M3 708 Kg/ M3 472 Kg/ M3 823 Kg/ M3 185 Kg/ M3 2398 Kg/M3 320 Kg/ M3 683 Kg/ M3 455 Kg/ M3 794 Kg/ M3 176 Kg/ M3 0.7% 2430 Kg/ M3

M25 ( 1 : 2.28 : 3.27) Cement : 340 Kg/ M3 20 mm Jelly : 667 Kg/ M3 12.5 mm Jelly : 445 Kg/ M3 River sand : 775 Kg/ M3 Total water : 185 Kg/ M3 Admixture : 0.6% Fresh concrete density: 2414 Kg/ M3 Note: sand 775 + 2% moisture, Water 185 -20.5 = 164 Liters, Admixture = 0.5% is 100ml M30 ( 1 : 2 : 2.87) Cement : 380 Kg/ M3 20 mm Jelly : 654 Kg/ M3 12.5 mm Jelly : 436 Kg/ M3 River sand : 760 Kg/ M3 Total water : 187 Kg/ M3 Admixture : 0.7% Fresh concrete density: 2420 Kg/ M3 Note: Sand = 760 Kg with 2% moisture (170.80+15.20) M35 ( 1 : 1.79 : 2.57) Cement : 410 Kg/ M3 20 mm Jelly : 632 Kg/ M3 12.5 mm Jelly : 421 Kg/ M3 River sand : 735 Kg/ M3 Total water : 200 Kg/ M3 Admixture : 0.7% Fresh concrete density: 2400 Kg/ M3 Note: sand = 735 + 2%, Water = 200- 14.7 = 185.30, Admixture = 0.7% M40 ( 1 : 1.67 : 2.39) -1-

Cement : 430 Kg/ M3 20 mm Jelly : 618 Kg/ M3 12.5 mm Jelly : 412 Kg/ M3 River sand : 718 Kg/ M3 Water Cement ratio : 0.43 Admixture : 0.7% Note: Sand = 718 + Bulkage 1% M45 ( 1 : 1.58 : 2.26) Cement : 20 mm Jelly : 12.5 mm Jelly : River sand : Water Cement ratio : Admixture : 450 Kg/ M3 626 Kg/ M3 417 Kg/ M3 727 Kg/ M3+ Bulkage 1% 0.43 0.7%

M50 ( 1 : 1.44 : 2.23) Cement : 450 Kg/ M3 20 mm Jelly : 590 Kg/ M3 12.5 mm Jelly : 483 Kg/ M3 River sand : 689 Kg/ M3 + Bulkage 12% Water Cement ratio : 0.36 (188 Kg) Admixture : 1.20%3 Micro silica : 30 Kg Super flow 6.7% of cement WEIGHT OF MATERIALS 50 mm J bolt 40 mm J bolt 2” nails 3” nails 4" nails Binding wire : : : : : : 751 No’s / 52 Kg 883 No’s / 54 Kg 385 No’s / Kg 118 No’s / Kg 72 No’s / Kg 170 rings /Kg

SIMPLEX FORMULA:U = (N /L) x {(W x H) / (1 + S)} x Sq.rt {(L/50)} U N L W H S = = = = = = Ultimate load in tones Number of blows Pile length in feets Weight of hammer in tones Height of fall in feet. Set for 1 blows in Inch

Safe load = (ultimate load/ 2.5) Factor of safety = 2.5 10 blows = below 10 MM Thread couplers:- (For Column lapping) -2-

Couplers for reinforcing bars 20 mm to 28 mm crimped sleeve Slump IS 456 Lightly reinforced 25 – 75 mm Heavily reinforced 75 – 100 mm Trench fill (insitu & Tremie) 100 – 150 mm (For Termie vibrator not required) Durability:      The Environment Cover to Steel Type and quality of the constituent material Cement content and Water Cement ratio. Workmanship to obtain full compaction. Compaction and efficient curing.

Accuracy of measuring equipment in batching plant. Cement Aggregate Admixture Water Mixing time : : : : : + 2% + 3% + 3% + 3% 2 minutes for one mixing.(site Mixing)

TOLERANCE:Form work:In C/S for columns & Beams deviation is In footing plan In depth Reinforcement:For effective depth D < 200mm For effective depth D > 200mm For Cover to reinforcement Maximum freefall of concrete = + 10mm = + 15mm = + 10mm = 1.50 m height. -3= + 12mm more (or) - 6mm less in size = + 50 mm more (or) – 12 mm less size = + 0.05 D (specified thickness).

TOLERANCE ON DIA IN LENGTH:0-25mm 25-35mm 35-50mm = + 0.5 % = + 0.6 % = + 0.8 %

TOLERANCE ON WEIGHT PER METRE:0-10mm 10-16mm 16 and above = +7% = + 5% = + 3%

TOLERANCE FOR CUTTING LENGTH :A) B) When the specified length is not given When the min. length is specified = + 75mm (or) – 25 mm = + 50 mm (or) – 0 mm

GENERAL: Lapping is not allowed for the bars having diameters more than 36 mm.  Chair spacing maximum spacing is 1.00 m (or) 1 No per 1 Sq.m  For dowels rod minimum of 12 mm dia should be used.  Chairs minimum of 12 mm dia bars to be used.  Longitudinal reinforcement not less than 0.8% and more than 6% of gross C/S. ...
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