Category: Basics of Engineering

Units of Measurements for Construction Materials

Units of Measurements of Construction materials :– There are different type of materials are used in construction industry , some of material’s and their measurements units are stated below 

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Units of Measurements for Construction Materials

S.no Material / Item  Units for Materials Units
1 Cement Bags Bag 
2 Sand  Cubic Meter m3
3 Aggregate  Cubic Meter m3
4 Gravel Cubic Meter m3
5 Brick Numbers / Square meter Nos / m2
6 Blocks  Numbers / Square meter Nos / m2
7 Stone Numbers / Square meter Nos / m2
8 Concrete  Cubic Meter m3
9 Screed Cubic Meter m3
10 White Cement kilogram  Kg
11 Fly ash  kilogram  Kg
12 Lime kilogram  Kg
13 Reinfroment Steel  kilogram  Kg
14 Binding wires kilogram  Kg
15 Water Litre L
16 Glass Square meter m2
17 Ply wood  Square meter m2
18 Wood  Cubic Meter m3
19 Teak Wood Cubic Meter m3
20 Sal Wood  Cubic Meter m3
21 Gypsum Board Square meter m2
22 Slacked Lime  kilogram  kg
23 Primer Litre L
24 Paint Litre L
25 Emulsion Paint Litre L
26 Thinner Litre L
27 Wall putty  kilogram  kg
28 Tile  Numbers / Square meter Nos / m2
29 Marble  Numbers / Square meter Nos / m2
30 Grainte  Numbers / Square meter Nos / m2
31 Bitumen  Drum / Litre Drum / L
32 Membrane Roll / Square meter / Numbers Roll (or) m2 / Nos
33 Geotextile  Square meter m2
34 Terram Sheet  Square meter m2
35 Insulation baord  Square meter m2
36 Foam  Square meter m2
37 Aluminium Sheet  Square meter m2
38 G.I Sheet (galvanized iron sheet) Square meter m2
39 A.C Sheet (Asbestos cement) Square meter m2
40 PVC pipe  meter m
41 Sanitary & Fittings  Numbers Nos
42 Windows Square meter / Nos m2 / Nos
43 Doors Square meter / Nos m2 / Nos

Concrete Grades in Construction: What They Mean & How They’re Used

Concrete is a mixture of cement, sand, aggregate and water, Grades of Concrete is defined as concrete mix proportion and the minimum strength of concrete at the end of curing period of 28days.

The Concrete grade is can be known by calculating compressive strength of concrete, compaction factor test is used to find the compressive strength of concrete , unit of compressive strength is known as N/mm²

Compressive Strength For Various Grade of Concrete

Compressive Strength For Various Grade of Concrete
Si.No Character of Concrete Concrete Grade MIX Ratio Compressive Strength
1 Lean Concrete M -05 1 : 5 : 10 5 N/mm² 725 psi
2 M -7.5 1 : 4 : 08 7.5 N/mm² 1087 psi
3 Ordinary Concrete M -10 1 : 03 : 06 10 N/mm² 1450 psi
4 M -15 1 : 02 : 04 15 N/mm² 2175 psi
5 M -20 1 : 1.5 : 03 20 N/mm² 2900 psi
6 M -25 1 : 1 : 02 25 N/mm² 3625 psi
7 Standard Concrete M -30 Design Mix 30 N/mm² 4350 psi
8 M -35 Design Mix 35 N/mm² 5075 psi
9 M -40 Design Mix 40 N/mm² 5800 psi
10 M -45 Design Mix 45 N/mm² 6525 psi
11 High Strength Concrete M -50 Design Mix 50 N/mm² 7250 psi
12 M -55 Design Mix 55 N/mm² 7975 psi
13 M -60 Design Mix 60 N/mm² 8700 psi
14 M -65 Design Mix 65 N/mm² 9425 psi
15 M -70 Design Mix 70 N/mm² 10150 psi

What are the Types of Levels used in Construction?

There are different levels used in the construction, these levels are used to make the construction process easy and understandable, some of basic level as follows.

LEVELS IN CONSTRUCTION

LEVELS IN CONSTRUCTION
BOB Bottom of Blinding
TOB Top of Blinding
BOF Bottom of Footing
TOF Top of Footing
PL Plinth Level
GL Ground level
EGL Excisting Ground Level
NGL Natural Ground Level
FGL Finished Ground Level
SL Sill Level
LL Lintel Level
SSL Structural Slab Level / Slab Sill Level
FFL Floor Finish Level / Finished Floor Level
SFL Structural Floor Level / Structural Finish Level
FG Finished Grade
FL Finished Level
GF Ground Floor
MF Mezzanine Floor
FF First Floor
SF Second Floor
RF Roof Floor
TOW Top of Wall
BP Bottom of Pool
TP Top of Pool
TB Top of Bench
TK Top of Kerb
NC Neck column


How to Calculate Weight of Reinforced steel Rod

Reinforcement Steel

Usually 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 32mm, 40mm dia size of reinforced steel bar used in construction, in this bars 6mm & 8mm are called as plain bar and 12mm, 16mm, 20mm, 25mm, 32mm, 40mm bars are called as rebar (or) Torsion bar , usually standard length of one reinforced steel bar is 12m.

Plain bar:-  The steel bar is don’t have rip which is called as plain bar

Torsion / Rebar:-  The steel bar having a rip which is called as torsion or rebar

Formula to find weight of reinforced steel rod / unit weight of steel bars.

         Formula = D²/162, ( D-Diameter of steel bar )

Unit Weight calculation of Steel bar @ 1m Length

Unit Weight of 6 mm Steel bar  =  6² /162    =   0.22 kg/m

Unit Weight of 8 mm Steel bar  =  8² /162    =   0.395 kg/m

Unit Weight of 10 mm Steel bar =  10² /162  =  0.617 kg/m

Unit Weight of 12 mm Steel bar =  12² /162  =   0.889 kg/m

Unit Weight of 16 mm Steel bar =  16² /162  =   1.580 kg/m

Unit Weight of 20 mm Steel bar =  20² /162 =   2.469 kg/m

Unit Weight of 25 mm Steel bar =  25² /162 =    3.858 kg/m

Unit Weight of 32 mm Steel bar =  32² /162 =   6.321 kg/m

Unit Weight of 40 mm Steel bar =  40² /162 =   9.877 kg/m

Standard length of one reinforced steel bar is 12m so,

Unit Weight Of Steel Bars

Unit Weight Of Steel Bars
Dia of Steel Bar (mm) Type Unit Weight 1m Length Unit Weight for 12m Length Steel Bar Unit
6 mm Plain Bar 0.222 2.664 Kg
8 mm 0.395 4.741 Kg
10 mm Torsion (or) Rebar 0.617 7.404 Kg
12 mm 0.889 10.67 Kg
16 mm 1.580 18.96 Kg
20 mm 2.469 29.63 Kg
25 mm 3.858 46.30 Kg
32 mm 6.321 75.85 Kg
40 mm 9.877 118.52 Kg
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