CIVIL ENGNEERING STANDARD DATAS

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/M3
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, Water 185 -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)
M35 ( 1 : 1.79 : 2.57)
Cement : 410 Kg/ M
3
20 mm Jelly : 632 Kg/ M
3
12.5 mm Jelly : 421 Kg/ M
3
River sand : 735 Kg/ M
3
Total water : 200 Kg/ M
3
Admixture : 0.7%
Fresh concrete density: 2400 Kg/ M
3
Note: sand = 735 + 2%, Water = 200- 14.7 = 185.30,
Admixture = 0.7%
M40 ( 1 : 1.67 : 2.39)
Cement : 430 Kg/ M
3
20 mm Jelly : 618 Kg/ M
3
12.5 mm Jelly : 412 Kg/ M
3
River sand : 718 Kg/ M
3
Water Cement ratio : 0.43
Admixture : 0.7%
Note: Sand = 718 + Bulkage 1%
M45 ( 1 : 1.58 : 2.26)
Cement : 450 Kg/ M
3
20 mm Jelly : 626 Kg/ M
3
12.5 mm Jelly : 417 Kg/ M
3
River sand : 727 Kg/ M
3
+ Bulkage 1%
Water Cement ratio : 0.43
Admixture : 0.7%
M50 ( 1 : 1.44 : 2.23)
Cement : 450 Kg/ M
3
20 mm Jelly : 590 Kg/ M
3
12.5 mm Jelly : 483 Kg/ M
3
River sand : 689 Kg/ M
3
+ 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 : 751 No’s / 52 Kg
40 mm J bolt : 883 No’s / 54 Kg
2” nails : 385 No’s / Kg
3” nails : 118 No’s / Kg
4" nails : 72 No’s / Kg
Binding wire : 170 rings /Kg
SIMPLEX FORMULA:-
U = (N /L) x {(W x H) / (1 + S)} x Sq.rt {(L/50)}
U = Ultimate load in tones
N = Number of blows
L = Pile length in feets
W = Weight of hammer in tones
H = Height of fall in feet.
S = 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)
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 : + 2%
Aggregate : + 3%
Admixture : + 3%
Water : + 3%
Mixing time : 2 minutes for one mixing.(site Mixing)
TOLERANCE:-
Form work:-
In C/S for columns & Beams deviation is = + 12mm more (or) - 6mm less in size
In footing plan = + 50 mm more (or) – 12 mm less size
In depth = + 0.05 D (specified thickness).
Reinforcement:-
For effective depth D < 200mm = + 10mm
For effective depth D > 200mm = + 15mm
For Cover to reinforcement = + 10mm
Maximum freefall of concrete = 1.50 m height.
DENSITY OF MATERIALS:-
Weight of Bricks = 1600-1920 Kg/M3
Weight of Block work = 1920 Kg/M3
Weight of R.C.C = 2310 – 2700 Kg/M3
CURING:-
Super Sulphate cement : 7 days
Ordinary Portland cement OPC : 10 days
Minerals & Admixture added cement: 14 days
STRIPPING TIME ( De-Shuttering):-
For columns, walls, vertical form works : 16-24 hrs
Soffit formwork to slabs : 3 days (props to be refixed after removal)
Soffit to beams props : 7 days props to refix after removal.
Spanning up to 4.50m : 7 days
Spanning over 4.50m : 14 days
Arches spanning up to 6m : 14 days
Arches spanning over 6m : 21 days
CUBE SAMPLES:-
1 – 5 M3
: 1 No.
6 – 15 M3 : 2 No’s
16 – 30 M3
: 3 No’s
31 – 50 M3
: 4 No’s
Above 50 M3
: 4 + 1 No of addition sample for each 50 M3
TEST RESULTS OF SAMPLES:-
The test results of the samples shall be the average of the strength of three specimens.
The individual variation should not be more than + 15 % of the average.
If more the results of the sample are invalid.
COMPRESSIVE STRENGTH:-
3 days : 45 %
7 days : 67 – 70 %
14 days : 85 %
28 days : 100% +
APPROXIMATE COST PER SQ.FT (MANTRI PROJECT)
HIGH RISE BUILDING:-
Structure = 979 / Sft
(Concreting, Block work, Plastering, Flooring, Dado, painting)
Electrical works (Modular switches) = 172 / Sft
Plumbing (P.H.E) = 93 / Sft
Fire Fighting = 13 / Sft
Lift = 34 / Sft
Common Area = 94 / Sft
External development (Landscape, road works, drains etc.,) = 87 / Sft
TEST FOR SILT & CLAY:-
 Take 200 ml measuring cylinder fill sand up to 100ml mark
 Add 150ml of water and shake well
 Allow it to settle for 3 hrs.
 Measure the total height and height of clay.
 Calculate the clay and silt in total sand
 Clay and Silt should not exceed 3% by weight (or) 8-10% by volume
 For crushed sand Clay and Silt should not exceed 15% by weight
ORGANIC IMPURITIES:-
 Don’t dried the specimen before testing
 Take 250 ml measuring cylinder.
 Add 75 ml of water with 3% of Sodium Hydroxide. Fill sand layer to 125 ml
 Make the volume up to 200ml by adding more of sodium hydroxide solution
 Shake well allow it to stand for 24 hrs
 If the solution becomes darker than straw yellow colour then the sand has to be
tested for further by casing mortar cubes for 7 & 28 days is not less than 95%.
 If the solution is lighter or just straw yellow colour the sand can be used for
concreting without any further test.
QUANTITIES REQUIRED:-
Plastering (CM 1:3) = 1.50 bags / 10 m2
Plastering (CM 1:5) = 1.05 bags / 10 m2
Ceiling Plastering (CM 1:3) = 48 kg / 10 m2
Brick work (CM 1:5) = 86 Kg / 10 m3
Brick work (CM 1:6) 9” thick = 80.64 Kg / 10 m3
Brick work (CM 1:3) 4½” thick = 15.46 Kg / 10 m3
Lime for white washing = 10 Kg/100 m2
Painting = 10 ltr/ 100 m2
Distemper 1st coat = 6.5 Kg / 100 m2
Distemper 2nd coat = 5.0 kg / 100 m2
Snowcem 1st coat = 30 Kg / 100 m2
Snowcem 2nd coat = 20 Kg / 100 m2
Paint ready mixed one coat = 10 ltr / 100 m2
Weathering Course = 7.68 Kg / m2
Flooring = 8.10 kg / m2
Pressed tiles for weathering course (CM 1:3)= 7.68 Kg / 10 m2
Granolithic floor finish = 8.10 Kg / 10 m2
WATER CEMENT RATIO:-
M20 = 0.55
M25 = 0.50
M30 = 0.45
M35 = 0.45
M40 = 0.40
SPACING OF BARS:-
 Provide the dia of the bar, if the dia of the bar are equal.
 Provide the dia of the larger bar, if the dia are unequal.
 5mm more than the nominal maximum size of the coarse aggregate.
CONVERSION:
1 Acre = 4046.72 m2
1 cent = 40.4672 m2
COVER TO MAIN REINFORCEMENT:-
Column : 40 mm (D>12mm)
Column : 25 mm (D= 12mm)
Beam : 25 mm
Slab : 15 mm (or) not less than dia of the bar.
Footing : 50 mm
Sunshade (Chajja) : 25 mm
CO-EFFICIENT FOR PAINTING:-
Partly paneled and glazed doors : 0.80 times the door or window area.
Collapsible gates : 1.50
Corrugated sheeted steel doors : 1.25
Rolling shutters : 1.10
Expanded metal hard drawn steel : 1.00
Open palsied fencing and gates, brace, rails : 1.00
Corrugated iron sheeting : 1.14
A.C corrugated sheeting : 1.20
A.C Semi corrugated sheeting : 1.10
Wire gauged shutters : 1.00
Paneled framed and braced doors, windows : 1.30
Ledged and battened doors and windows : 1.30
Flush doors : 1.20
Partly paneled doors : 1.00
Fully glazed doors : 0.80
Fully louvered : 1.80
Trellis work : 2.00
Curved or enriched : 2.00
Weather boarding : 1.20
Wooded single roofing : 1.10
Boarding with cover tilets and match boarding : 1.05
Tile and slate battering : 0.80
Plain sheeted steel : 1.10
Fully glazed steel : 0.50
Calculation of Materials:-
a) For 1 m3
of concrete Mix 1:2:4 (M15)
Add 50% for wet concrete = 1.50 m3
= 1.50/(1+2+4) = 0.214 m3
For 1 m3
= 30 bags of cement required (1440/50) say 30 bags
Cement = 0.214 x 30 = 6.42 bags
Sand = 0.214 x 2 = 0.428 m3
Aggregate = 0.214 x 4 = 0.856 m3
b) Wall plastering in CM 1:4 of 12 mm thick for 100 m2
:-
Volume = 100 x (12/1000) = 1.20 m3
Add 30 to 35% as bulking of sand = 0.36 m3
Add 20 as wastage of sand = 0.312 m3
Total = 1.872 m3
= (1.872/1+4) = 0.374 m3
Cement = 0.374 x 30 = 10.77 bags
Sand = 0.374 x 4 = 1.496 m3
c) For 100 m3
of solid Block masonry in CM 1:6 mix 8” thick:-
Volume = 100 x 0.2 (Thickness of wall)
= 20 m3
No. of blocks required = 20/(0.4 x 0.2 x 0.2)
= 12502 No’s
Volume of mortar = 20-{0.39 x 0.19 x 0.19 x 1250}
= 20 – 17.598
= 2.40 m3
Note: 200mm – 10 mm for mortar thickness = 190 mm
Blocks =17.598/(0.4 x 0.2 x 0.2)
=1100 No’s
Add 2% wastage = 22
Total = 1122 No’s
Increase by 25% for dry mortar = 3 M3
= 3/ (1+6)
= 0.429 M3
Cement = 0.429 x 30 = 12.50 bags
Sand = 0.429 x 6 = 2.57 M3
Blocks =1122 No’s
STEEL:-
 Weight of rod per meter length = d
2
/ 162 where d in mm
 “L” for column main rod in footing is minimum of 300mm
 Hook for stirrups is 9D for one side
 For Cantilever anchorage length for main steel is 69D
 No. of stirrups = (clear span/Spanning) + 1
 Design strength is M 40, target strength is 1.25 x 40 = 50 Mpa
TRAPEZOIDAL FOOTING FORMULA:- L
Volume, V = (L x B x D) = H/3{A1 + A2 + sq.rt (A1+A2)}
Where A1 = L x B
A2 = l x b B
H = D-d (Overall depth of footing – depth of
 Rectangular footing)
THEROTICAL WEIGHT:-
Cement = 1440 Kg/m3
Steel = 7850 Kg/m3
Bricks = 1600 – 1920 Kg/m3
1 HP = 745.7 watts
WEIGHT OF ROD PER METER LENGTH:-
DIA WEIGHT PER METER
6mm = 0.222
8mm = 0.395
10mm = 0.616
12mm = 0.888
16mm = 1.578
20mm = 2.466
25mm = 3.853
32mm = 6.313
40mm = 9.865
CMENT REQUIREMENTS:-
M10 : 210 Kg
M20 : 320 Kg
M25 : 340 Kg
M30 : 380 Kg
M35 : 410 Kg
M40 : 430 Kg
M45 : 450 Kg
M50 : 450 + M.S 7.5%