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  • Users: andorrax1
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  1. andorrax1

    Concrete-steel anchors that require only single-side access

    Hi all, I'm working on a project where a building's facade system is to be connected to a slab which rests on steel I girders. The designers had initially recommended an HAC-50 type anchor system (see image below). Trouble is, the slab in question is only 60mm thick (no idea how or why but the...
  2. andorrax1

    Questions about 'reference stress'

    Hi all, Couple of questions here: I've recently started working on a project concerning limit analysis and keep coming across the term 'reference stress' (Or 'nominal stress'). Most of the literature I've gone into so far give only vague hints as to what it actually is ( stress far away from...
  3. andorrax1

    Effect of persistant vibration on prestressed concrete

    Hi all, Title says it all. Basically one of the options proposed for a plant room project I'm designing was that of a PT slab foundation. I'm a bit concerned since the plant will include heavy machinery with not-insignificant vibration potential. My gut feel is that in the (very) long term...
  4. andorrax1

    Considering change in notional thickness when calculating shrinkage for concrete composites

    Hey all, I'm designing a precast hollow-core slab with a 60mm topping using Australian standards and while calculating shrinkage a thought occurred to me - when the topping is cast, the hypothetical thickness (or notional thickness) of the HC slab should increase since the top of the slab is no...

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