1. Aim - To find the more efficient type of truss in carrying gravity load between the two through type of truss as shown in the question. Observation- It can be seen that both the trusses are pratt (Truss A)and howe type (Truss B) of truss. It can be seen in the attached figures,While carrying gravity load, In Truss A,…

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Please find the attached Staad model for your review. Q1.Aim : To model the structure with given input using staad pro. Given Data: Bay spacing 5 m Span of Truss 30 m Shape of Truss – Pratt Truss Slope of truss 20 degree Height of the column 15 m Floor Beams at 5 m from base Secondary beams at 1.5 c/c Length of the…

1. Aim: To apply the following loads on the staad model. Given Input: Form a Load case as DL for Dead Load Apply Self weight Apply member load of 3 kN/m on the rafter Apply member load of 6 kN/m on the secondary beams Apply point load of 20 kN at node intersecting inclined member on the top chord. Form a Load case as LL…

Q1. Aim: To design a 3 hinged pitched roof frame of a steel building. Given data: The length of the column is considered as 10 m. The slope of the roof is 1 in 10 and the roof is accessible for maintenance purposes (75 kg/m2) only.  Bay spacing is 5 m and the frame width is 20 m. Weight of roofing sheet = 5kg/m2 Weight…

1. Aim: To Calculate total number of purlins and girts required for the building. Given data: Rafter span = 50 m Bay spacing = 8 m Roof slope = 1 in 10 Height of column = 12 m Brick wall height = 2 m Purlin spacing = 1.2 m Girt spacing = 1.5 m Solution: To calculate the no of purlins, 1st calculate the total length of…

1. Aim: To calculate the Friction load on the axis. Given data: Vertical force at the pipe support=125 kN. Solution: Considering the pipe material and support material to be carbon steel. So the coefficient of friction is considered as 0.3 for a single pipe running case. Friction load on the support in the longitudinal…

      Modeling & Analysis in Staad Pro. As the bridge span is 12 m, two nodes have been created separated by a 12 m distance. Now using add beam option in the geometry section, a beam has been modeled. Then the two end nodes have been assigned with simply supported support. A section of 2 m x 2m has…

Aim: To apply the IRC live load on the given bridge deck. Given data: The span of the bridge-24 m. Diameter of pier- 6 m. Width of bridge deck-7 m. C/C distance between the Cross girder-8 m. C/C distance between main girders-1.9 m. The thickness of the deck is -200 mm Section size of the Main girder - 500 mm x 1900 mm.…

Aim: To model and analyze the I girder bridge in Staad pro with IRS loading. Given data:  Width of bridge deck - 26 m The span of the bridge -25 m Solution: Model of the bridge The superstructure part of the bridge has been modeled in Staad pro according to the figure provided in the question. Properties of the bridge…

Aim- To calculate the earth pressure being applied on the abutment and do the structural analysis in staad pro. Given data- Height of ground level from the top of the footing of the abutment (h1)-3 m Height of backfill (h2) -7 m Length of abutment -5 m The water table is at Ground level. The depth of the abutment footing…

Aim: To calculate the wind loads and do the structural analysis of the bridge by applying wind load.  Given data: The height of the bridge above ground level is 9 m.  It is located in open terrain with well-scattered obstructions of height less than 10m.  (terrain category-2) The pier size is 1.5 x 1.5 m.…

Aim: To calculate the pipe loads and apply them on the bridge and do the structural analysis. Given data: The length and width of the bridge are 24 m & 3 m respectively. The bridge is carrying two DI K9 pipes having NB of 700 mm & 200 mm respectively. Solution:  Calculation of pipe load,  For the dead…

Aim: To calculate the water current forces and apply them to the staad model of the bridge and do the analysis. Given data: The high flood level is 2 m above the foundation level. The span of the bridge is 45m.  The mean velocity of the river is 3 m/s. Assumption: Bridge deck width = 10 m. No of piers = 3 The support…

Aim: To calculate the centrifugal load and apply it to the bridge model in staad model. Given data: The span of the bridge is 12 m.  The width of the carriageway is 7 m.  The bridge is subjected to a live load of Class 70R tracked vehicle.  The design speed(V) of the vehicles is 75 km/hr.  The radius…

Aim: To calculate the wave load to be applied to the staad model of the bridge and do the analysis. Given data: Base slab width = 9 m Bridge span=12 m The maximum crest elevation(η,max) = 3 m. The deck of the slab is supported by three I Girders. Each I Girder is 1.7 m in height with a top and bottom flange width of…

Aim: To apply the snow load on the bridge and analyze the bridge in staad pro. Given data: The span of the bridge=10m Width of the bridge=18 m The deck of the bridge is flat with slope <30 degree The depth of accumulation of snow is 1250 mm Assumed Data: Consider the pier having a diameter of 1.5 m. Size of cross girder…

Aim: To apply the temperature load on staad model of the bridge and analyze. Given Data: The Span of the bridge is 9 m. The Box girder dimension is 1500 x 1500 with a web thickness of 300mm. The diameter of the circular pier is 2.5m  The width of the Deck slab is 7m and the width of the pier cap is 6m. The Thickness…

Aim: To calculate the barge impact load of the Panamax vessel to be applied on the bridge as shown in the question and do the analysis in Staad pro. Given data: The Deadweight tonnage of the Panamax vessel (W) is 52500 DWT The speed of the Barge (V) is 60Km/hr or 16.67 m/s The span of the Bridge is 12m Width of the…

Aim: To calculate dead load, IRS live load, Earth Pressure load, Wind load & Seismic load and apply it in the Staad model and do the analysis in Staad pro. Given data: Unit weight of soil = 18 kN/m3 Solution: Dead load: Self-weight command will be used to see the effect of dead load. Soil load calculation: Height between…

Aim: To calculate the water current forces, centrifugal forces, wave forces, snow loads, temperature loads, and Barge Impact load for the bridge structure shown and analyze the structure in Staad Pro. Given Data: The maximum crest elevation for the wave is 3 m. The deck of the slab is supported by four I Girders. Each…