LIVE LOADS VehicleGross Weight (kg) Wheelbase (m) Track (approx., m) 17’ U-Haul63734.472.14 14’ U-Haul49904.091.98 10’ U-Haul39013.531.68 Pick-Up Truck 29213.681.70 Standard Size Car 16522.871.63
BEAM DESIGN LOAD CALCULATIONS Live Loads (37.5% of the weight of a 17’ U-Haul) Dead Loads (due to slab) Using beam design program, d=0.2032 m (assuming 0.15 m deep slab) 23444.7 N 11722.35 N 10210.89 N 6828.02 N/m 3 m
SLAB DESIGN LOAD CALCULATIONS Widest Load Spacing, Narrowest Beam Spacing Limiting case Maximum Moment: 6534.7 N*m Minimum Depth: 0.15 m Designed as a beam 667.47 N 23,444.7 N 24,112.2 N 0.1016 m 0.68 m 1.63 m 3.5 m 667.47 N load is from curb 23,444.7 N load is from 37.5% of the weight of a 17’ U-Haul Truck
SLAB DESIGN CONSIDERATIONS Determined optimal beam spacing (1.90 m) Used different track measurements Cases Considered Each of the four vehicles centered on the span Each of the four vehicles as far to one edge as possible Smallest and largest vehicles with one tire centered on the span (basically the same as vehicle at edge) Checked against 0.15 m slab depth to ensure that the moment created would be safe 0.15 m was estimate for slab depth used when designing beam, so recalculation was not necessary
PIER DESIGN Designed as a wall 3.5 m x 0.3048 m x 2 m 2 m 3.5 m 0.3048 m
AMOUNT OF CONCRETE AND FILL Concrete 2 beams spanning piers, slab spanning crossing, 5 piers Total volume: 28 cubic meters Fill Around culverts Total volume:
WHAT COMES NEXT Determine footing for piers Adjust pier shape if necessary Check moment calculations to ensure slabs and beams are thick enough Design armoring Design curb on slab Design reinforcement for concrete
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