I have an foundation that has a rather thin bottom slab i.e. 120mm (with a single rebar mesh) but has 8 inclined concrete ribs that connect the column to the bottom slab, one at each column corcer and one at mid point of each column face. The hight of the ribs is almost 500mm. The size of bottom...
We have a situation where anchor bolt grout pockets for a industrial silo are casted at the wrong location such that the whole bolt assembly is off set by a few degrees. The pockets were casted against a spiral steel pipe and were meant to be filled with epoxy non shrink grout after installation...
We have a situation where we need to support the columns for an outside staircase on a corbel extending from bottom slab slab of the building, as shown in the attached figure. I have seen design and analysis procedures for an isolated corbel but I can't find much for a continues corbel. Since we...
We have a pile slab that is supporting water tank walls and two columns. The piles are fairly evenly spaced but the spacing is decreased around the columns and wall corners. Minimum pile spacing is around 1500mm. Piles size is 350mm x350mm and the pile slab is 800mm thick. The pile slab has been...
I have a situation where we need a floor slab on top of a pile cap. Ideally, the pile cap can serve as a floor slab, but this would give us a very thick pile cap. So instead the manager is proposing a compacted gravel layer on top of the pile slab. The idea is to have a thinner base slab on...
I am designing a flat slab and I want to give a basic top and bottom reinforcement and then provide additional bars where required. I have seen that being done once or twice but I am not sure if there are some additional requirement that need to fulfilled. I mean should we consider them as...
I am designing a slab for blast loads. The slab is supported on wall on the edges and two column and the middle span is unsupported. I have made a FEM model is the RFEM software and the moment results are attached for the the x direction. As can be seen, I am having very high moments at the...
I am designing a underground tank where the depth of the tank is 9m. I am getting have high shear at the vertical joint of the walls and it seems i would need some kind of shear reinforcement at the wall corner. But i am not sure if these results are realistic since i have never seen shear...
I am trying to find out the number and location of piles (steel piles) required for an underground pump station. We have a 800mm thick base slab which will be supported on piles. I have modeled the pump station in a FEM software and applied all the loads (traffic load on top slab, crane loads...
Hello all,
We frequently have WQ steel beams supporting hollow core slab floors. For the edge beams where there is significant torsion, we consider that the WQ beam are not capable of taking any torsion and tie the beam to the floor using rebars that are anchored in the hollow core seams on one...
We have a narrow concrete slab supported on three sides on a WQ steel beam (Box beam). The slab is part of a hollow core floor system and on the fourth side, it is connected to the hollow core slab. I have attached a sketch to explain the situation. On the longer side, the slab is only resting...
