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1.0.0
MCQ
27461. Carriage-way is protected by --- wide shoulders.
0.5 to 1.25
1.25 to 2
2 to 4
4 to 6
27462. A road connecting two towns is called
country road
urban road
highway
none of these
27463. The top of the ground on which the foundation of road rests, is called- [MOD-20]
sub-grade
base
soling
wearing layer
27464. Calculate effective length of Road on a highway given the overall thickness is 500 mm and thickness of wearing course is 80 mm (x is 3.6m). [BB-20]
4.76m
34.8m
2.34m
1.45m
Overall thickness = 500mm = 0.5m Thickness of wearing course 80mm (x=3.6m)=.08m Effective length of road = 3.6+2(0.5+0.08)= 4.76m.
27465. Bitumen is generally obtained from- [BB-20]
organic material
synthetic material
petroleum product
coal
ব্যাখ্যা: Bitumen is generally obtained from petroleum product. Petroleum bitumen normally called bitumen or Asphalt is produced by refining crude oil. It used as a binder in road-building product.
27466. The main function of railway sleepers is to- [MOCA-19]
support the rails
keep the two rails at correct gauge
distribute the load coming on the rails & the ballast
all the above
27467. How many parts of a pavement? [BREB-17]
3
5
4
6
There are 4 part of a pavement such as subgrade, sub- base. Base course and surface course or wearing course,
27468. The roads connecting capital cities of states are called-
national highway
state highway
express way
capital highway
27469. The highest point on road surface is called [MOD-20]
crown
camber
gradient
berm
27470. The stopping sight distance of a vehicle moving with 45 kmph (coefficient of friction is 0.4 and reaction time is 2.5 sec) is [BB-20]
48m
49m
50m
51m
27471. Penetration test on bitumen is used to determine its- [HED-19]
Grade
Viscosity
Ductility
All of these
27472. The term used for major important roads of a country is-
country road
urban road
highway
none of these
27473. Asphalt cement usually used in Bangladesh has the penetration range of- [MES-16]
AC 40-50
AC 85-100
AC 60-70
AC 120-150
27474. A water-bound macadam road is an example of- [BGFCL-17]
rigid pavement
semi-rigid pavement
flexible pavement
none
A pavement which consists of a mixture of a asphalticor bituminous matedrial and aggregate placed on a good quality and compacted granular material is termed as flexible pavement. Example- Water bound macadam road.
27475. The reception signal is- [MES-16]
outer signal
home signal
both a & b
none of these
27476. The asphalt naturally available is
Surface asphalt
Lake asphalt
Rock asphalt
All of above
27477. For the water-bound macadam road, the recommended camber is-
1 in 24 to 1 in 30
1 in 30 to 1 in 48
1 in 48 to 1 in 80
1 in 80 to 1 in 120
27478. The Central Road Organisation (CRO) was set up in-
1930
1948
1934
1956
27479. Level crossing' is a- [MOD-20]
regulatory sign
warning sign
informatory sign
none of these
27480. What is the weight for 1 cft RCC slab of thickness 0"-4"? [MES-16]
150 lb
100 lb
50 lb
60 lb
ব্যাখ্যা 4''*150/12=50 lb