I am learning the timber structure design on your website and I found it very useful on all the timber design. When I was running through the timber system in the guidance WS TDG 46 Wood Construction Systems 11-20 I found there was no sample CAD file and project files on the work samples from page 138 that I think it would be difficult for me to follow. Therefore, is there any chance that you can share the CAD and project (e.g. PDF) files so I can follow the instructions and procedure of how to work out the examples.
Unfortunately there are no CAD files for our Technical Design Guide #46. The worked examples are “general conceptual designs” as explained in the Introduction, and are provided to show how to calculate using various design inputs, rather than for use in real life scenarios where actual design drawings would be needed.
My 1970's single level brick veneer unit experienced a water pipe dripping / leaking / spraying onto an above ground hardwood timber floor bearer for an unknown period of time. The issue was recognized by a tenant who heard a slight "hissing noise" behind the brick veneer wall one day. When exposed, the water was gushing directly onto a 90x90 timber bearer which has rotted in this exact location (at brick pier joint), losing approximately half of its structural section. The entire joint was saturated. Refer attached photo. After rectification the joint has dried out. The other bearers and joists in the house are substantially dry and in sound condition. My question is how long it would take for water dripping/leaking/spraying onto this joint to result in this type of damage /rot? Days? weeks? months? 1 year? Longer?
It's very difficult to say exactly how long it would take for your floor bearer to lose half its cross-section to wood rot. Although the bearer is hardwood, different types of hardwood have different levels of resistance to fungal decay. Some species are more resistant than others. We can say it would take more than days or weeks, and at least some months, possibly up to a year. Wood rot progresses more slowly when wood is wet intermittently in the open air, as opposed to wetting from a constant source of moisture in an enclosed situation, as in your sub-floor space. Sorry we can't be more precise.
I am after the fire testing report of 75mm CLT. I can find many other product's fire testing reports but I can't seem to find one for CLT. If you have it, could you please send it through?
WoodSolutions has not commissioned fire tests specifically on CLT but it's possible some of our reports could provide relevant data, depending on which fire properties you need, eg. Critical Radiant Flux, Group Number etc. Otherwise some Australian CLT producers have produced fire data, for example XLam here: https://xlam.co/wp-content/uploads/2024/10/004-XLam-Fire-Design-Guide-V2-August-2023.pdf.
