WorksheetsDay 79-Dec 15-worksheet-Btech-Design of pavement 1
Total questions: 15
Worksheet time: 11mins
The minimum thickness of compacted subgrade for National Highways is:
300 mm
400 mm
500 mm
600 mm
Which test is MOST commonly used to evaluate the strength of subgrade soil for flexible pavement design?
Plate load test
Direct shear test
CBR test
Triaxial test
The layer mainly responsible for distributing wheel load stresses to the sub-base is:
Wearing course
Sub-base
Base course
Subgrade
The minimum thickness of base course for high traffic roads (> 2 MSA) is approximately:
150 mm
200 mm
230 mm
250 mm
In flexible pavements, load transfer to lower layers occurs by:
Slab action
Bending action
Grain-to-grain contact
Frictional resistance
Flexible pavements in India are designed as per:
IRC 48
IRC 58
IRC 37
IRC 81
In flexible pavements, maximum stress occurs at the bottom layers.
True
False
The foundation layer over which pavement is constructed is called (a) .
Minimum thickness of compacted subgrade for roads other than NH and SH is (a) mm.
The sub-base layer mainly consists of __________ stone aggregates.
broken
polished
rounded
crushed
Maximum thickness of base course in flexible pavement is (a) mm.
The topmost layer of flexible pavement exposed to traffic is called (a) course.
Flexible pavements do not require expansion joints.
True
False
Load transfer in rigid pavements occurs by (a) action.
Standard axle load adopted by IRC for pavement design is (a) kN.
