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Limit State Box Culvert Design IRC:6-1966
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1.0 Design Data1.1 Dimension DetailNo of cellsClear SpanClear Height (at outer edge)Clear Height (at median location)Width of road at topWidth of BoxHt of fill (W.C / P.C.C / pavement layers) over the top slabThickness of top slabThickness of bottom slabThickness of external vertical wallSize of haunchWidth of Crash barrierDistance of edge of crash barrier from edge of boxHeight of surchargeSafe Bearing Capacity of the soilPermissible Settlement1.2 Material PropertiesDensity of concreteDensity of soilDensity of wearing coatDensity of Profile corrective courseCoefficient of active earth pressureAngle of internal friction (in degree)1.3 Design ParametersGrade of ConcreteClear Cover for earth face structural componentClear Cover for inside face structural componentClear Cover for bottom slabPermissible direct comp. strength of Concrete (scc)Permissible flexural comp. strength of Concrete (scb)Permissible tensile strength of Concrete ( sct )Permissible tensile strength of Steel ( sst )Design Costants:Base Projection2.0 Load Calculations for the Box Structure2.1 Dead LoadSelf weight of the structure has been calculated directly in STAAD file by the comment "SELFWEIGHT -1".2.2 Super Imposed Dead Load2.2.1 Top SlabWearing coat thicknessHt of fill (Thickness of W.C / P.C.C / pavement layers)Load (UDL) on top slab = 0.065*22Wt of Crash barrier per meterTotal UDL load due to S.I Dead LoadHeight of soil on projected portion of base slabWt of soil on the projected portion of base slab2.3 Earth PressureThickness of top slabHeight of top haunchClear height between top & bottom slabHeight of bottom haunchThickness of bottom slab
2.4 Live Load SurchargeEquivalent heightUniform Intensity of loading = 0.5 * 1.2 * 202.5 Braking LoadCarriageway Live LoadWidth of the boxBraking Load = 0.2 * 400 / 122.6 Additional pressure on edge 1m strip due to eccentricity of Live LoadLive LoadWidth of culvert (parallel to traffic direction)Width of culvert (perpendicular to traffic direction)Distance of CG of load from outer edge of box culvertTransverse MomentSection Modulus of box in transverse directionUpward UDL on edge 1m strip2.2.2 Bottom SlabThickness of earth fillLoad (UDL) on bottom slab = 0.3 * 20
Limit State Design
Box Culvert Design
- Submitted By:
- Maiwand Khan (Maiwandkn91)
- Submitted On:
- 21 Dec 2017
- File Size:
- 1,002.00 Kb
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- File Author:
- Maiwand Khan