Aim : To calculate the dead load on a box girder bridge of span 12 m. Given data : Width of bridge deck – 10.2 m Span of the bridge  - 12 m Pier size – 2.5 m dia The seismic zone – zone 4 Wind speed – 47 km/hr Location – Bengal Theory : Dead Load as per IS 875 – Part 1, the…

 Aim : To calculate the live load on a bridge of span 24 m. Given data : Width of bridge deck – 7 m Thickness of bridge deck – 0.2 m Main girder dimension 1.5 x 0.5 m Cross girder dimension is 1.5 x 0.3 m Span of the bridge  - 24 m Pier size – 2 m dia The seismic zone – zone 3 Wind speed…

 Aim : To apply the IRS railway loads and model in Staad pro and perform the results and justify. Given data : Width of bridge deck – 26 m Span of the bridge  - 25 m Pier height – 10 m Theory : Live  Load as per IRS is different for different broad gauges. Here, for given  problem am applying…

 Aim : To calculate the earth pressure acting on the abutment wall . Given data : Backfill soil height – 7 m Ground level  - 3 m Theory : Earth pressure : The horizontal thrust exerted by the retained earth on a vertical structural element like wall, pier, abutment. Earth pressure at rest : When the vertical…

 Aim : To calculate the design wind load for the bridges to be designed at Mumbai . Given data : Height of the bridge above ground level  – 9 m It is located in open terrain . Pier size – 1.5 x 1.5 m It is scattered obstruction of height less than 10 m Theory : The load or force on a structure arising…

 Aim : To calculate the pipe loads for the bridge located in the banks of the river Narmada . Given data : Width of the bridge   – 3 m It is located in banks of the river Narmada . Pipe dia ( N B , Ductile iron pipe )  – 700 mm Pipe dia ( N B , Ductile iron pipe )  – 200 mm Span…

 Aim : To calculate the dead load, IRS live load, Earth pressure load, Wind load and seismic load for the bridge located in Ahmedabad metro rail project . Given data : Width of the bridge   – 24 m Span of the bridge is – 260 m Unit weight of soil – 18 kn/m3 Load calculation : Dead load…

Aim : To calculate the water current forces for the bridge. Given data : The high flood level is 2 m above foundation level Span of bridge is 45 m Mean velocity of river is 3m/s Theory : Water current forces are the forces which is caused due to the ocean currents. The major ocean currents are is given below 1 North equatorial…

Aim : To calculate the centrifugal  force for the bridge by using following data. Given data : Width of the carriage way is 7 m Span of bridge is 12 m Design speed of the more 75 km/hour Radius of curvature in the bridge is 3 m Bridge is subjected to a live load of class 70 R tracked vehicle Theory : The moving of…

Aim : To calculate the wave load on  the bridge superstructure by using following data. Given data : Width of the deck slab is 9 m Span of bridge is 12 m Maximum crest elevation is 3 m I girder,  height is 1.7 m, width 2.5 m, thickness of eb and flange is 0.5 m Thickness of deck slab is 2 m R = 5 , Cva = 3, Cr…

Aim : To calculate the snow load on  the bridge using following data. Given data : The snow is settled snow Span of bridge is 10 m The deck of bridge is flat with β < 30° The depth of accumulation of snow is 1250 mm Theory : Generally the bridge structure is subjected to snow load, when the bridge is located…

Aim : To calculate the temperature  load for  the R.C bridge with M 40 grade to be constructed in Delhi. Given data : The box girder dimension is 1500 x 1500 with a web thickness 300 mm Span of bridge is 9 m The dia of circular pier is 2.5 m The width of deck slab is 7 m and width of pier cap is 6 m Thickness…

Aim : To calculate the barge impact  load of  the panamax vessel on the  bridge. Given data : Dead weight tonnage of panamax vessel is 52000 DWT. Speed of the barge is 60 km/hour Span of bridge is 12 m Width of bridge is 7 m The pier of size is 2.5 x 2.5 m The cross girder size is 0.75 x 1.8 m Thickness…

Aim : To calculate the water current forces, centrifugal forces, wave forces, snow load, temperature load,  barge impact  load on the  bridge. Given data : Dead weight tonnage of panamax vessel is 25000 DWT. Span of bridge is 40 m Width of bridge is 10.5 m The pier of size is 1.2 x 1.2 m The girder size…

Aim : To explain the different types of foundation and list the points to be considered while selection of bridges.   FOUNDATION: Foundation is the lowest part of the building or the civil structure that is in direct contact with the soil which transfers loads from the structure to the soil safely. It is the main…

Aim: To Define all loads to be applied in the abutment of the bridge as per IRC 6 and the clauses. Check for overturning and sliding of 4 m height of Abutment (from ground level), embedded 2 m in ground.    Theory: A bridge abutment is a structure which connects the deck of…

Aim :    1.To describe how hydrology and geotechnical studies are used in fixing span  as per IRC standards and type of bridge and the clauses applicable for the same. Ans: Hydrology study gives us all the data regarding water flow on the site like design discharge that helps in deciding total…

Reinforcement summary for foundation         Face Dia mm Spacing mm   Dia mm Spacing mm Heel slab Bottom 25 200       Top 25 200 + 25 200 Toe slab  Bottom 25 200 + 25 200 Top 25 200       Distribution 10 200           3) How a shallow…

What is difference between free and fix pier and how it impacts the foundation size. Also add the calculation of loading in both the cases.  Bridge bearings are structural equipment or devices installed between bridge substructure and superstructure to transfer the applied load including earthquake…

Aim:- To analyse and design the bridge underpass raft foundation considering, earth pressure, self-weight, Surcharge, Braking loads. Modelling in STAAD-Pro:- The bridge underpass is modelled as a plane frame structure taking the centre line dimension of the structure in STAAD-Pro. As the length of the…

Aim:- Analysis & Design raft foundation of a box culvert bridge having 12 M span and 5.5 M height in STAAD pro and applying loads as per IRC 6. Que 1) Calculate the loads to be applied on the box as per IRC 6. Given Data:-  The span of structure = 12 M Height of structure = 5.5 M Safe bearing capacity…

Aim: To elaborate and explain theoretical questions on Pile and Well Foundations: For Pile Foundation To elaborate on how to fix number of piles in the deep foundations in a flyover in Delhi, listing all the loads acting on it and making all the combinations as per IRC 6. To explain what are the different factors that…