Steel Concrete Friction Factor
Steel Concrete Friction Factor
(OP)
Could anybody tell me what is the friction value between steel (say rolled H-column)and concrete in term of either psf or MPa?
Thanks.
Thanks.
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Steel Concrete Friction Factor
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RE: Steel Concrete Friction Factor
RE: Steel Concrete Friction Factor
One more question.
If I want to calculate the length of embedment need for an axial loaded column without considering end bearing (it does not sound right, but they have reasons for it which I don't agree) how do I come up with the shear force with the friction factor?
Is it (axial force) times (friction factor) like when we compute friction force or there are other equations for that case? FYI, bending is not an issue here.
We use 10 psf when computing resisting force between concrete tremie and steel sheet piling.
What do you think.
RE: Steel Concrete Friction Factor
1. Bond stress- If the steel is placed at the time of concreting, a bond will develop as the concrete sets and shrinks. Code describes the value to be taken. Generally in the order of 0.8 N/mm2. You can use it to find out the surface area of embedment.
2. In another scenario, you can completely ignore the bonding and rely on shear strength of concrete (punching strength). In this case, steel length is of no consequence apart from affecting its own slenderness in compression.
RE: Steel Concrete Friction Factor
RE: Steel Concrete Friction Factor