Civil Engineering Tips.
There are many activities that should be performed by Civil Engineers at site & in the lab. In This Article we will discuss some important points which every civil engineer must learn & remember. These tips are can also helps to the crack interview. This is the kick start guide if u are joining in the any company as a Civil Engineer.
- ASTM Abbreviation : American Society for Testing Materials
- Grade of the Concrete is denoted as Cement: Sand: Aggregate (Ex M20 Grade : 1:1.5:3)
- C/C means Center to Center Distance.
- DL means Development Length.
- Lapping of the bars not allowed if the dia of bar is more than 36-mm.
- For circular column minimum of Six longitudinal bars are used.
- The minimum thickness of the slab is 0.125=m
- Water pH value less than Six should not be used for the construction purpose.
- The concrete Should not be thrown from the height more than One m.
- The Compressive strength of the Bricks is 3.5 N /mm2
- The initial setting time shall not be less than 30 minutes & the final setting time of the cement is 10hours.
- Dead Load means Self weight of the Structure.
- Sand having moisture content more than Five % should not be used for the Concrete mix.
- DPC means Damp Proof Course. The thickness of the D.P.C should not be less than 2.5-cm.
- Cube test is carried out for the each 30-m3 usage of concrete.
- RMC : Ready Mix concrete The concrete is made at factory & transported to the site, This type of the concrete is used where there is a lack of space for mixing the concrete & used where the huge amount of the concrete is required for construction.
- The height of the floor is usually three m or 10-ft (If the person asks you what’s the height of 12 storied building? Ans: three m x 12-floors = 36-m)
- A head mason can work 25-30 m3 in the day.
- M-20 grade of the concrete is generally used in the construction of the slab.
- Weight of the Bar is calculated using formula D2/162 (D = Dia of the bar in mm)
- The No. of the Bricks required for one m3 of Brick masonry are 550 bricks.
- Specific gravity of the Cement is 3.16g/cm3; Bricks is two g/cm3; Sand is 2.65g/cm3 ,
- Standard Size of the Brick is 19-cm x 9-cm x 4-cm or 19-cm or 9-cm x 9-cm
- Floor area occupied by 50kg of the Cement bag is 0.3m2 & height of 0.18m.
- As per IS 456: 2000, Maximum dia of the bar used in the slab should not exceed 1/8th of the total thickness of slab.
- IS 456:2000 is Code of Practice for Plain & Reinforced Concrete.
- IS 800:2000 is code of Practice for the General steel construction.
- The slope or Pitch of the stair should be in between 25 degrees to the 40 degrees.
- The rise in stairs is in between the 150-mm to 200-mm.
- Tread in staircase is in between the 250-mm to 300-mm.
- Hook length should not be less than 9-D (Dia of the Bar)
- Unit weight of the P.C.C is 24KN/m3 , R.C.C is 25 KN/m3 , Steel is 7850Kg/m3
- The volume of the 50-kg cement bag is 1.3CFT.
- Theodolite least count is 20-Secs whereas Compass Least count is 30-mins.
- TMT bars : TMT means Thermos Mechanically treated bars.
- Cement more than three months old cannot be used for the construction.
- The length of the each bar from factory is 12-m.
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