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  1. Dijin

    Placing concrete slab over an existing Roof

    Thanks for the info hokie, would you mind suggesting how this scenario has to be approached ? Basically we are checking span moment, shear & support moment, shear due to the self weight of crane, counter weight & lifting weight. Dead load of concrete & a live load of 13.5 kN/m2 is considered...
  2. Dijin

    Placing concrete slab over an existing Roof

    Actually there are beams in transverse direction in every 4 meters of size 600mm x 1800mm and end walls are 13 meters apart. The axle load of crane is 12 tonnes (6 no.s axles)and the lifting weight is 23 tonnes.
  3. Dijin

    Placing concrete slab over an existing Roof

    Hi, Please guide me about the adverse effects of placing a slab on existing Roof Arrangement . Both top(250mm thk) & bottom (400mm thk) slabs are having 16 dia rebars @150 mm spacing. This modified slab will be used for crane access (operating load 300tons). The crane is of All terrain type...

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