Important RGPV Question
CE 802 (C) Bridge Engineering
VIII Sem, CE
UNIT 1- Types Of Bridge Super Structures
Q.1) What do you mean by centrifugal force and also write the formula for calculating the centrifugal force.
Q.2) What are the permissible stresses recommended by IRC followed by design of a bridge.
Q.3) What are the advantages of composite bridges?
Q.4) What do you mean by pier cap?
Q.5) Write notes on the following:
I) IRC Class AA loading
II) IRC Class A loading
III) IRC Class B loading
Q.6) List the loads to be considered in the design of plate girder bridge.
Q.7) What are the causes for longitudinal forces on bridges.
Q.8) Discuss the different loading causes for the design of a single vent R.C. box culvert.
Q.9) What is a bridge? What is the importance of studying bridge engineering.
UNIT 2- Design Of R.C. Bridge
Q.1) Write design steps for slab culvert.
Q.2) Write the conditions where box culvert is used.
Q.3) The slab panel of an R.C.C. T beam and slab deck is 2.5 m wide between main beams and 4 m long between cross girder. Find the total design moments for IRC Class A loading. Adopt M-20 grade concrete and Fe 415 grade HYSD bars.
Q.4) Design a box culvert having inside dimensions 4m × 4m for the following data:
Dead load = 12 KN/m²
Live load = 46 KN/m²
Density of soil = 18 KN/m³
Use M20 concrete and Fe 415 steel.
Q.5) A deck slab bridge is to be constructed using class A loading. The following details are available. Design deck slab of bridge using effective width method.
Clear span = 6m
Width of supports = 400 mm
Width of carriageway = 7.5 m
Width of kerbs = 600 mm
M20 grade of concrete and Fe 415 grade of steel
Q.6) Design a reinforced concrete slab culvert for following requirements:
Clear span = 5m
Width of supports = 400 mm
Clear width of roadways = 6.8 m
Width of kerbs = 600 mm
Thickness of wearing coat = 80 mm
Load = class A
Q.7) Obtain the Courbon’s reaction factor and the maximum bending moment in case of a T beam bridge having the following details :
Roadways : 2 lanes
Loading : IRC Class A
No. of main girders : 3, c/c spacing : 2.6 m
Span of the bridge : 16m
Kerb width : 600 mm on either side
Q.8) Design a box culvert having inside dimension of 3m×3m. This culvert is subjected to a dead load of 1400 KN/m² and live load of IRC Class AA tracked vehicle. Assume the unit wt. of soil to be 18KN/m³. Angle of repose of soil is 30°. M25 concrete and Fe 415 steel are used. Road width is 7.5 m and span is 3.3 m.
Q.9) A T beam bridge has to be provided across a channel having the following data. Design the interior panel.
Flood discharge = 30 m³/s
Bed width = 12 m
Side slope = 1:1
Bed level = 50 m
HFL = 51.25 m
Maximum allowable afflux = 1.5 cm
General ground level = 52 m
Hard rock available at = 48m
Road formation level = 54m
Road = N.H. (2 lanes)
Footpath = 1 m wide on either slide
Loading = IRC Class AA
Materials = M40 concrete and Fe 415 steel
No. of longitudinal girders = 3
Q.10) Describe box culverts & draw sketch.
Q.11) Define the following terms:
(a) Abutment
(b) Back fill
Q.12) Design a R.C. slab culvert for a national highway to suit following data:
Carriage way: Two lane 7.5 m wide
Footpath: 0.9 m on either side
Clear span: 5m
Wearing coat: 75mm
Width of bearing: 500mm
Materials: M25 grade concrete: Fe 415
Loading: IRC Class AA tracked vehicle Design the R.C. slab deck and sketch the details of the reinforcement in cross section of a slab.
Q.13) Design a reinforced concrete box culvert having a clear ventory of 4m×4m. The superimposed dead load on the culvert is 12.8 kN/m². The L.L on the culvert is 60 kN/m². Density of soil at site is 18 kN/m³. Angle of repose=30°. Adopt M20 grade concrete mix and Fe 415 grade for steel. Sketch the details of reinforcement in the box culvert.
Q.14) What are R.C.C bridges. Explain any five of them with neat sketches.
Q.15) A reaction of 3000 KN is expected at a support of 25 m spaned T-beam bridge. Design a rocker & roller bearing. The details are allowable pressure on roller: 5N/mm diameter/mm length. Bearing pressure on rocker pin = 30N/mm². Allowable pressure on concrete bed block = 3.8N/mm².
UNIT 3- Design Of Steel Bridges
Q.1) Draw and explain the general arrangements of composite bridge. Also write the general features of plate girders.
Q.2) Design a composite bridge deck slab on steel girder. The span of the bridge is 15 m. The other details are:
Road = Two lane highway
Kerbs = 600 mm on either side
No. of steel girders = 4
Spacing of girders = 2.5 m c/c
Material = M40 concrete and Fe 415 steel
Bed level = 150 m
Bed width = 21 m
Stream bund top = 152.50 m
Road top level = 155.50 m
Hard rock level = 148.50 m
Wing walls : return type
Q.3) Using the following particulars to design a plate girder bridge for a broad gage track.
Span:20m.
Top level of the railway embankment : 1.15m
Bed level of the stream : 120m
Ground level suitable for foundation: : 98m
Stream bund top level :101.50m.
Q.4) Sketch the elements of plate girder bridge.
UNIT 4- Pier, Abutment And Wing Walls
Q.1) Write the functions of abutments.
Q.2) Why stiffeners are provided?
Q.3) What do you mean by plate girder? Write the design principles of plate girder.
Q.4) Discuss the various types of abutments.
Describe the usual type of bridge piers.
Q.5) Verify the stability of the abutment shown in fig. The other salient details are given below:
Material of the abutment : Concrete
Line load on the bridge : IRC Class AA (Tracked)
Density of soil = 18kN/m³
Angle of repose = 30°
Coefficient of friction = 0.5
UNIT 5- Foundations And Bearings
Q.1) What is the function of bearings in bridges? Explain the functions of expansion joints and contraction joints.
Q.2) What is a well foundation? What are its different types?
Q.3) Explain essential requirements of a good foundations.
Q.4) The foundation for substructure of a bridge consist of 16 piles to carry a total load of 8000 kn. The piles are spaced at 1.5 m k. They are driven through soft ground to a hard straitum available at a depth of 12m. Design the pile foundation using M-20 concrete & Fe 415 steel.
Q.5) What is a bridge foundation? Explain it with neat sketch. What are the various functions & type of foundation.
— Best of Luck for Exam —
