May 04, 2011 9:53 pm
I realise this forum is home builder orientated, but perhaps there are some people here who have had experience with precast concrete walls which have been used to support flooring.
I've approached a few companies about building a mezzanine floor inside a workshop space - all I am provided is a large sum with no specifics regarding design and materials and when I've asked for more details, the response has always been "on signing a contract, we'll supply a full design".
Basically I want to build two mezzanine floors - one a small size just 1100 x 2500mm with two sides supported by the precast concrete walls and a single column in the opposite corner. What I would like to know is what method and products are to be used to attach the steel beams to the precast walls? Obviously bolted, but is a specific bonding material or glue used when fitting appropriate dynabolts?
The mezzanine floor needs to support 2x Gyprock clad studded walls, heavy duty particle board flooring and a communications rack with up to 800kg weight - I figure the mezzanine platform needs to handle 1500-2000kg total load maximum. Obviously I'll be getting the design certified by an engineer before I start any construction.
The second mezzanine will be much larger and built in 2 stages, 6000 x 7000mm for the first stage and the same for the second. The total floor space 6000 x 14000 with 3 sides supported again by the precast walls, with hopefully a single column in middle of the span that isn't against the precast. The beams are going to be the killer cost here, but any tips towards doing as much of this contruction as possible on my own (or at least with help from family and friends and a colleague's crane hire company), would be most helpful
Re: mezzanine flooring + tilt up/precast concrete2
May 05, 2011 1:19 am
Hi Benjamin, and welcome.
Once you have it drawn up and engineering done then you will know exactly what fixings have been specified. Typically mechanical (dyna bolts) or chemical (chemset) would be used. The engineer will specify what he recommends and spacings as well as all dimensions for structural steel.
It is a fairly simply process. Just take your drawings to some structural steel suppliers who will take off the quantities and give you a price. Likely you will have fabricated steel columns and beams that will have welded flanges that you will then bolt C purlins too to form the floor. Then sheet with partical board.
It will go together like a large Mecanno set. Hopefully you or some of your family have some building experience just to make sure you are setting out correctly and are following the plans correctly.
All the best.
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