Matsee,
We have been requested by a client to provide a cable design to support a membrane structure at a new shopping centre being built in WA.
Attached are a number of documents and I sent you a link to a Dropbox folder that has more information if required. The .jpg shows a mock up of how the shade/membrane was originally conceived, but our client has been engaged to re-design this option - which is where we come in.
The client has two options in mind for this project:
Option 1 (Proposed Cable Layout Drawing): 5 main cables spanning void, with cross cables to support different sized membrane panels
Option 2 (Proposed Cable Layout with Additional Coverage Drawing): 6 main cables
Basically our client is requesting if we can do some structural calculations to work out:
1. What sized cables would be required to span this particular void with the membrane attached, trying to achieve a maximum sag of say 300mm;
2. What point loads would be applied at the anchor points (the steelwork has not yet been designed so they can manufacture to meet load requirements from cables).
3. What would be the recommended internal cable size to support the membrane panels?
Please note that one membrane material will not be covering the entire cable system (important for wind load calculations). The client has the intentions of designing smaller membrane pieces that will be connected in patterns to the cables (see attached image). This will result in less wind had being applied to the overall structure.
Do you need to know what material is being used?
Is there any other information Mr Ton will require to undertake this project for us?
Thank you.
Darren
PS I have attached two documents regarding calculating the wind loads - we had previously supplied - but if you need anything more please advise.
PPS Client is requesting initial calls for early next week - is this possible?