Unit weight is the weight per unit volume. Unit weight is expressed in KG / L or KG/㎥ or KN/㎥. We know that volume is measured in terms of liters or ㎥ and weight in terms of kilos or kN.
Unit weight,
also known as specific weight, is the total weight of a substance in a single
unit volume.
The specific weight (y) of a material is also defined as the product of its density (á‹«), and the standard gravity (g).
As a civil engineer, for problem solving or calculations ,you should
always remember the unit weights of different building materials. During an
interview, you might be asked about unit weight of any materials and within a
second you have to be answerable to be more efficient and representative.In
this article, i have mentioned all the building materials with its unit weights
in the table below.
S.No. |
Building Material |
Unit Weight |
1 |
RCC - Reinforced cement
concrete |
25 KN/㎥ |
2 |
PCC - Plain cement concrete |
24 KN/㎥ |
3 |
Portland Cement |
14 KN/㎥ |
4 |
Cement Mortar |
20 KN/㎥ |
5 |
Dry
Sand |
16 KN/㎥ |
6 |
Water |
10 KN/㎥ |
7 |
Wet sand |
11 KN/㎥ to 20 KN/㎥ |
8 |
River Sand |
18.4 KN/㎥ |
9 |
Bitumen |
10.4 KN/㎥ |
10 |
Bricks |
16 to 19.2 KN/㎥ |
11 |
Brick
Masonry |
19.2 KN/㎥ |
12 |
Cement
plaster |
20 KN/㎥ |
13 |
Lime
plaster |
17 KN/㎥ |
14 |
Broken
Bricks |
14.2 KN/㎥ |
15 |
Dry, Loose Earth |
12 KN/㎥ |
16 |
Dry, Loose Sand |
14.4-17 KN/㎥ |
17 |
Silt |
21 KN/㎥ |
18 |
Igneous
rock |
27 KN/㎥ |
19 |
Sedimaentary rock |
26 KN/㎥ |
20 |
Metamorphic
rock |
27 KN/㎥ |
21 |
Mud |
16 KN/㎥ |
22 |
Granite |
24.5 KN/㎥ |
23 |
Marble |
26.5 KN/㎥ |
24 |
Aggregate |
17.5 KN/㎥ |
25 |
Lime concrete |
19 KN/㎥ |
26 |
Clay
(Dry) |
16 KN/㎥ |
27 |
Clay
(Damp) |
17.6 KN/㎥ |
28 |
Gravel |
20 KN/㎥ |
29 |
Ballast |
17.2 KN/㎥ |
30 |
Chalk |
22.4 KN/㎥ |
31 |
Willow
Timber |
420 Kg/㎥ |
32 |
Teak
Timber |
650 Kg/㎥ |
33 |
Sal Timber |
10 KN/㎥ |
34 |
Clinker |
750 Kg/㎥ |
35 |
Copper |
89 KN/㎥ |
36 |
Stainless
Steel |
74.5 KN/㎥ |
37 |
Aluminium |
27 KN/㎥ |
38 |
Ice |
910 Kg/㎥ |
39 |
Slag |
15 KN/㎥ |
40 |
Asbestos
Cement Sheet |
12 to 15.6 Kg/㎥ |
41 |
Glass |
24-27.2 KN/㎥ |
42 |
Charcoal |
530 Kg/㎥ |
43 |
Tin |
72 KN/㎥ |
44 |
Nickel |
8.9 KN/㎥ |
Lets us think out of
box , if you know units weights of any other building material ,Then post in a
comment section below. I will really appreciate it .
Thank you for sharing this content about construction materials
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