Engineering Units mainly is the basic one which we must know about that because in the field of the Construction site as a site engineer we need to know what the units like foot, inch, square foot, meter cube.
All the conversation should know without a calculator because on the site there a lot of shortage of time.
1 Gunta = 121 Sq yards
1 Gunta = 101.171 Sq Meter
1 Gaj = 1 Yard
1 Yard = 36 inch
1 Yard = 3 feet
1 Yard = 0.9144 meter = 1 mtr
1 sq Yard = 0.83612 Sq meter
1 sq Yard = 9 sq feet
1 Sq yard = 1296 Sq inch
1 Meter = 1.0936 Yards
1 Meter = 39.370 inch
1 Meter = 3.280 feet
1 Sq meter = 1.1959 Sq yard
1 Sq meter = 1550 Sq inch
1 Sq Meter = 10.763 Sq feet
1 feet = 0.304 meter
1 feet = 0.333 yards
1 foot =12 inch
1 Sq feet = 0.111 Sq Yard
1 Sq feet = 0.09290 Sq Meter
1 Sq feet = 144 Sq inch
1 inch = 2.54 cm
1 Inch = 0.0254 meter
1 Inch = 0.0277 yards
1 Inch = 0.0833 feet
1 Sq Inch = 0.00064516 Sq Meter
1 Sq Inch = 0.00077160 Sq Yards
1 Sq Inch = 0.00694444 Sq feet
1 Acre = 4046.86 Sq Meter
1 Acre = 4840 Sq yards
1 Acre = 43560 Sq feet
CONCRETE GRADE:
M5 = 1:4:8
M10= 1:3:6
M15= 1:2:4
M20= 1:1.5:3
M25= 1:1:2
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
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
1bag cement-50kg
1feet-0.3048
1m-3.28ft
1sq.m-10.76sq.f ¬t
1cu.m-35.28cu.f ¬t
1acre-43560sq.f ¬t
1cent-435.6sq.f ¬t
1hectare-2.47acre
1acre-100cent-4 ¬046.724sq.m
1ground-2400sq. ¬ft
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/ M3
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)
STANDARD CONVERSION FACTORS:
INCH = 25.4 MILLIMETRE
FOOT = 0.3048 METRE
YARD = 0.9144 METRE
MILE = 1.6093 KILOMETER
ACRE = 0.4047 HECTARE
POUND = 0.4536 KILOGRAM
DEGREE FARENHEIT X 5/9 – 32 = DEGREE
CELSIUS
MILLIMETRE= 0.0394 INCH
METRE = 3.2808FOOT
METRE = 1.0936YARD
▪️MATERIAL CALCULATION : CEMENT IN BAGS
🔹 PCC 1:5:10 1440/5*0.45 129.60Kg 2.59
🔹 PCC 1:4:8(M 7.5) 1440/4*0.45 162.00Kg 3.24
🔹 PCC 1:2:4(M 15) 1440/2*0.45 324.00Kg 6.48
🔹 PCC 1:3:6(M 10) 1440/3*0.45 216.00Kg 4.32
🔹 RCC 1:2:4(M 15) 144/2*0.45 324.00Kg 6.48
🔹 RCC 1:1.5:3(M 20) 1440/1.5*0.45 32.00Kg
8.64
🔹 RCC 1:1:2(M 25) 370.00Kg 7.40
🔹 RCC M 30 410.00Kg 8.20
🔹 RCC M35 445.00Kg 8.90
🔹 RCC M40 480.00Kg 9.60
🔹Damp Proof Course
CM1:3,20mm tk 1440/3*0.022 10.56Kg 0.21
🔹 2"tk precast slab M15 324*0.05 16.20Kg 0.32
🔹 3"tk precast slab M15 324*0.075 24.30Kg
0.49
🔹GC Masonry CM 1:7 1440/7*0.34 70.00Kg
1.40
🔹Brick Work CM 1:6 1440/6*0.25 60.00Kg 1.20
🔹 Brick Work CM 1:4, 115tk 1440/4*0.25*0.115
10.35Kg 0.21
🔹17. Grano Flooring CC 1:1.5:3 1440/1.5*0.45*0.05
21.60Kg 0.43
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