Search results for query: *

Hi All, I'm looking for help on the required connection between circular driven piles and the precast concrete pile caps that will sit on them. The structure is for a marine jetty taking mooring loads so the connection will need to resist shear loads and uplift. Would I treat it the same as a...

Hi, The use of Non-linear FEA for the design of concrete building structures would appear to be more common. My experience is very much in the use of Linear FEA models and in this respect when dealing with reinforced concrete appears a safer approach. I would be grateful for any opinions by...

Hi All, Just a general query in respect of springs used to model piles for a raft slab. For initial results I tend to use pinned restraints to model piles simply to get an idea of what the likely pile loads will be; but once detailed site investigation information and/or a pile design...

All, I'm currently reviewing structural drawings for a code compliance check and the RC details indicate a 'Shear Key' at the interfaces between floor slabs, walls and columns etc. I understand that this is a standard way of detailing concrete pour breaks by North American practice. And for...

I'm currently carrying out a code compliance check of a multistorey building that has 9" PT floor slabs. Unfortunately I only have an academic understanding of PT slabs. Are there practical issues in terms of the drawing design details etc that I should be aware of. I have already read with...

Hi, I understand that ACI 515.1R-79 Clause 2.5.5 lists materials/chemicals that attack concrete. Unfortunately here in the UK (I could be wrong)there does not appear to be a list of such chemicals in any of our technical standards or publications. Would anyone have an abstract of this list...

Hi, The problem is with a multi-storey car park with precast decks on steel lattice girder trusses. The trusses have suffered various amounts of corrosion to the top and bottom cords and the web members including around the welds. A colleague has mentioned Hydrogen Imbrittlement that can...

Hi, In the design of reinforced concrete water retaining structures somewhere in the region of 30%(depending on wall thickness, loading etc) of the reinforcement is there to restrict cracking to 0.2mm. Has anyone used or considered replacing this anti-crack reinforcement with steel fibres, to...

Hi, Does anyone know of a suitable method of calculating combined flexural and direct tension crack widths for reinforced concrete tanks. There are established method of calculating them separately but not combined. Regards Hannis