Que1. What is size of concrete cube?
Ans: The size of concrete cube is (150 mm × 150 mm × 150 mm)
Que2. What is BBS?
Ans: BBS Stand for Bar Bending Schedule.
Que3. What is the density of steel?
Ans: 7850 kg/m3
Que4. How to find out unit weight of steel?
Ans: D 2/162 (Kg/m)
Que5. What is the Initial and final setting time of Ideal cement mix?
Ans: Initial setting for Ideal cement mix is around 30 minutes for almost all kind of cement. For masonry concrete it can be 90 minutes. Final setting time of Ideal cement mix is should be 10 hours at mix. For masonry cement it shouldn’t exceed 24 hours.
Que6. What are common methods of curing the concrete?
Ans:
Spraying
Wet covering of Surface
Ponding
Application of curing chemicals
Steam curing
Que7: What are the types of foundation used in construction?
Ans:
There are basically two types of foundation
Shallow foundation
Deep foundation
Que8: Types of footings used in building construction?
Ans:
Isolated footings.
Spread footings.
Wall footing/strip footing.
Stepped footings.
Combined footings.
Raft foundation.
Pile foundation.
Sloped footings.
Strapped footings.
Que9. Types of concrete admixtures.
Ans:
Air entraining admixture.
Water reducing admixture.
Retarding concrete admixture.
Accelerating concrete admixture.
Calcium chloride.
Que10. What is the full form OPC and PPC?
Ans:
OPC: - Ordinary Portland cement.
PPC: - Pozzolanic Portland cement.
Que11. What is weight of 1st class bricks?
Ans: 3.85 Kg.
Que12. How many days we can use cement from the of production date?
Ans: 3 months from the of production date.
Que13. What should we do after slab casting?
Ans: We should provide grouting after slab for fill up the voids.
Que14. What is full form of FAR, FSR, FSI?
Ans:
FSR: - Floor area ratio.
FSR: - Floor space ratio.
FSI: - Floor space index.
Que15. What is expansion joint?
Ans:
An expansion joint is used in concrete and steel. An expansion joint allows the concrete or steel to expand or contract with daily temperature variations. If you don’t allow this., you may get buckling or spalling or total failures
Que16. What is floor to floor height?
Ans: Generally, floor to floor height 10 feet (3m).
Que17. How to calculate unit weight of steel bars?
Ans :
Formula, d2/162
Where, d = Diameter of bar.
We know, weight = volume × density (Density of steel = 7850 kg/m3 )
= Area × Length × Density (volume = Area × Length)
=π/4 xd^2×LxD=(3⋅1.4)/4 xd^2×1000x 7850/(1000×1000×1000)
= d^2/162
=(0⋅785xⅆ^2×7850)/(10OD×1000) =d^2/1 x 0.00616225/100000000 =d^2/(1/0.0061225) =d^2/(162⋅25)
L = Length of steel. & D = density of steel.
Que18. What is the concrete test?
Ans:
Slump test.
Compressive strength test.
Water permeability test.
Water absorption test.
Que19. What is least cover provided for different RCC Members?
Ans:
Footing = 50 mm
Column = 40 mm
Slab = 20 mm
Beam = 25 mm.
Que20. What is the unit weight of RCC & PCC?
Ans:
RCC = 25 KN/M3
PCC = 24 KN/M3
Que21. What is the compressive strength of bricks?
Ans :
1st class bricks = 105 Kg/cm2
2nd class bricks = 70 Kg/cm2
Fire bricks = 125 Kg/cm2
Que22. What is the slope of staircase?
Ans:
As per IS code 456:2000, it should be between 25 to 40 degrees.
Que23. What is the full form of 1BHK?
Ans: 1BHK mean 1 Bedroom, 1 Hall & 1 Kitchen.
Que24. What is Civil Engineering?
Ans:
Civil Engineering is the oldest and one of the most versatile branch of Engineering.
The field deals will the planning, designing & constructions of building and various others structures like bridges, tunnels, roads, canals, Raiilways, buildings, sewerage systems, pipelines etc,
Que25. What is the unit weight of steel, RCC & PCC?
Ans: As per IS 456 – 2000, Clause 1921,
Unit weight are:
Steel = 7850 kg/m3
RCC = 25 KN/M
PCC = 24 KN/M3
Que24. What is the height of parapet wall?
Ans: The height of parapet wall is 1.1 meters (42 inches)
Que25. What is the height of stairs riser?
Ans: 7 inches or 178 mm.
Que26. What is size of concrete cubes?
ANS : The size of concrete testing cubes is ( 150 mm × 150 mm × 150 mm )
Que27. What are the different grades of cement?
Ans:
33 Grade.
43 Grade.
53 Grade
Que28. Test of at site?
ANS:
Color test.
Presence of lumpsds.
Adulteration test.
Temperature test.
Setting test.
Date of packing.
Strength test.
Que29. What is the density of different material;s?
Density of steel = 7850 kg/m3
Density of concrete ( RCC ) = 2500 kg/m3
Density of concrete ( PCC ) = 24 Kg/m3
Density of Wood =1200 kg/m3
Density of Sand = 1840 kg/m3
Density of Cement = 1440 kg/m3
Density of Ice = 920 kg/m3
Que30. What is the full form opf HYSD & CTD?
Ans: -
H.Y.S.D = High Yield Strength Deformed.
C.T.D = Cold Twisted Deformed
Que31.What thickness are plasters applied?
Ans:
Undercoat plasters are generally applied 11 mm thick. (for wall) & 8 mm for ceilings
Que32. Name various authorities or worker on a construction site?
Ans :
Senior engineering / project manager.
Construction Manager.
Site Engineering.
Site Supervisor.
Land Supervisor
Contractor.
Mistry.
Mason & labor.
Ques33. What is grouting?
Ans; Grouting is a fluid form of concrete which is used to fill the voids.
Ques34. What are the various tests for checking of brick quality.
Ans;
Water absorption tedt.
Hardness test.
Shape & Size.
Crushing strength test.
Soundness test. Etc ( to check bricks quality )
Que35.What are steps of construction site?
Ans;
Site preparation or leveling.
Excavation and PCC.
Foundation.
Backfilling & brick masonry.
Plinth beam.
Column.
Brick masonry.
Lintel beam.
Upper floor slab with nrm.
Door & windows forming
Electric & plumbing works.
Plaster.
. Paint & putty.
Wood & Fixture fitting (Finishing works)
Ques36. Stander size of room in Residential Building?
Ans;
Drawing/ Living room : 14’ × 16’ to 18’×24’
Bed Room : 10’× 12’ to 14’ × 16’
Guest Room : 10’ × 12’
Verandahs : 6’ × 10’
Dining Room : 12’ × 14’ to 14’ × 16’
Kitchen : 8’ × 13’ to 10’ × 12’
Store Room : 8’ × 8’ to 10’ × 10’
Panty : 8’ × 10’
Bathroom / water closet.
Combined : 4’ × 6’ to 6’ × 8’
Separate ( B.R ) : 4’ × 6’
Separate ( W.C ) : 4’ × 4’
10.Garage : 10’ × 16’ to 16’ × 20’
11.Dressing Room : 6’ × 6’ to 6’ × 9’
Ques37. What are the different type of Beam formulas?
Ans:
Different formula of beams :-
SL NO TYPE OF BEAM MAX . BM SLOPE DEFLECTION
01 M θ=ML/EI=ML/EI
02 WL θ=ML/2EI=(wL^2)⁄2EI
03 (wL^2)/2 θ=ML/3EI=(WL^3)/6EI
04 (WL^2)/2 θ=ML/4EI=(wL^3)/24EI
05 wL/4 θ=ML/4EI=WL2/16EI
06 (WL^2)/8 θ=Ml/(3EI ̇ )=wz/24EI
Wall footing / strip footing
strapped footing
stepped footing
Combined footing
Raft foundation
Pile foundation
sloped footing
strapped footing
95, Types of concrete admixture?
Ang
Air Retaining Concrete Admixture
Water Reducing and mixture
Retarding Concrete admixture
Acc derating concrete admixtures.
Calcium chloride,
96. What is the full form of OPC and PPC?
Ans,
OPC = ordinary Portland Cement,
PPC= pozzolanic Portland Cement
97. What is the weight of first-Class Bricks?
Ans,3.85 kg,
98 How many days we can use cement
from the of protection date
Ans,
3 months from the of protection
date
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