Top 120 Technical Interview Question for civil Engineers
What is the base CBR of subgrade soil ?
According to IRC 58-2015 Clause 5.7.3.6 , a base CBR of 8 % is suggested for 500 mm of chosen soil utilized as subgrade.
What is code reference from which you are performing CBR test with 3 energy level according to MORTH 5 modification ?
AASHTO Designation: T 193-99 - 2003
What is the restriction of Air Voids , stream and VFB in Dense Bituminous Macadam blend plan ?
The restriction of Air voids , stream and VFB is 3 - 5% , 2-4 mm and 65-75% at the same time
What ought to be the base required thickness of Subgrade soil according to MORT&H fifth amendment ?
17.5 KN/m³ or 1.78 gm/cc
What is the conditioning point of VG 30 and VG40 grade bitumen ?
The conditioning point of VG30/VG 40 grade bitumen is 47 ºC/50ºC
What will be the greatest admissible size of granular material for subgrade soil according to MORT&H particular ?
Suitable size of granular material in subgrade is 50 mm
What is the greatest Liquid Limit and Plasticity Index permitted in earth work in dike/subgrade soil ?
Earth ought to have Liquid Limit under 50 % and PI ought to be less 100% of the time than 25 %.
What is the recurrence of taking center for BM/DBM/BC for checking of compaction and thickness of laid layer according to MORT&H fifth modification ?
One center at 700 m²
What is the greatest Aggregate Impact Value of total took into account Bituminous concrete(BC) work in adaptable asphalt ?
AIV ought not be over 24%.
What is the base concrete substance and most extreme W/C proportion for M 25 RCC concrete for moderate condition according to MORT&H 5TH Revision ?
Least Cement Content 340 Kg and Maximum W/C proportion is 0.45
What is the thickness recurrence of compacted layer in Embankment and subgrade/Shoulder ?
1 arrangement of 10 test for 3000 m² of Embankment/1 set of10 test for 2000 m² of Subgrade/Shoulder.
What is contrast between Specific Gravity and Density ?
Mass thickness is the proportion between soil weight to the all out volume of the dirt yet Specific Gravity (G) is the proportion of the load in demeanor of a given volume of soil solids at an expressed temperature to the load in quality of an equivalent volume of refined water at that temperature . Explicit gravity has no unit and it is for the most part utilized in plan of cement/bituminous blend.
What is the most extreme Aggregate Impact Value of total for substantial work ?
45%
What is the pace of splash of Prime Coat over WMM ?
0.7 - 1.0 kg/m²
Which IS code determined the determination of totals ?
IS 383-2016
The amount Kinetic Viscosity of VG 40 bitumen is ?
The Kinematic Viscosity of VG 40 grade bitumen is 400 cst least at 135 º C
What is the dry thickness of WMM and GSB material in your task ?
The thickness of WMM/GSB in our undertaking is 2.23/2.24 gm/cc
What is the base concrete substance and greatest W/C proportion for Pile concrete according to IRC 78 - 2014 Cl 709.1.9 ?
Least measure of concrete substance 400 kg/m³ and most extreme W/C proportion is 0.40
What will be the base concrete substance according to IRC SP 49 2014 for DLC blend plan ?
140 kg/m³
The number of tests you take for 900 m² of DLC laying ?
3 examples (9 Cubes)
What is the Nominal size of total for grade 1 Bituminous Concrete?
19 mm
What is the greatest furthest reaches of FI+EI for Dense Bituminous Macadam according to MORT& H fifth correction ?
Most extreme FI+EI limit is 35%
What is setting time RS1 and SS1 Emulsion?
15 to 30 minutes for RS1 and 24 hours for SS1
The number of 3D square shape needed for 110 m³ concrete ?
4 +1+1=6 tests implies 18 shapes as IS 456-2000
According to MORT&H fifth update what number of grades of GSB are there?
Six grades are there.
From which IS code substantial blend configuration is being done ?
IS 10262 - 2009 now the most recent amendment presented IS 10262-2019
On what temperature Kinetic Viscosity trial of any bitumen is being done ?
At 135 º C
What is least bitumen content according to MORT&H fifth modification in DBM and BC for grade 1 blend ?
DBM 4.0 % and BC 5.2 % Minimum for the total having explicit gravity underneath 2.7.
What is Compaction boundary of Bituminous Concrete ?
Relative thickness least 92% of Gmm of that day
How much water can decrease the Superplasticizer ?
Essentially more than 30 %
What is the connection between Air Voids and Density ?
Air voids is conversely corresponding to Density i.e If Air Voids are expanding thickness will be diminishing and turn around versa
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