Browse Forums General Discussion Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 2Mar 17, 2021 5:28 am Simeon McGovern Affordable Custom Homes, We design and build to your budget Ashington Homes www.ashingtonhomes.com.au Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 5Mar 17, 2021 9:08 am SejaeD Pombearinoz Renovation of single storey, timber framed, timber weatherboard clad house. We are removing the roofs from the original pre war house (Hip roof and tile), the masterpiece that is the 1970's extension double roof at the rear (two gable roofs - cathedral ceiling - colourbond) and the less than optimum add on to the verandah and pretend it is an ensuite roof (skillion - very low - colorbond). We want to put one gable roof over the whole house. Ideally all load bearing to be on external walls. Will be steep enough pitch to allow for an attic room. The problem - it is 12 metres wide (and we need to allow for overhand) and 20 metres long - and is going to be fully tiled (so heavy). Span tables as I am reading them seem to suggest that we cannot have this span. We will go to drafting asap but are trying to be as precise with our brief as possible to ensure that we can keep professional fees down, and to enable a quick design process. Based in Perth - our local planning policy allows building up to 10.5 metres and no limitation on pitch. Current wall is 3.2 metres high - so not going to be anywhere near maximum height! . Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ We would be incredibly grateful to know if anyone has experience designing or building a Gable roof with a of span 12 metres by 20 metres. Just want to know if it is posisble really? Any feedback welcome Sounds like a really exciting project. You really need some specialist advice. Would you mind if I refer you to an excellent and very cost effective Structural engineer who would be able to give you an answer that you can rely on? Cheers Simeon Simeon, thank you for replying. Your referal would be most welcome. We are ready to progress almost immediatedly, but really do need that expert advice to hone our design. Thank you and look forward to receiving the details of the engineer Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 6Mar 17, 2021 9:14 am Pombearinoz Noname Im sure it can be done, but as above, you need specialist advice and design. Keep in mind that it's not just the roof that will need designing and engineering, but also roof and stormwater plumbing considerations Noname thank you for your response. The stormwater requirement is an excellent point. It is on my list but you are right I should highlight it to the roof person more strongly to esnure it is a seamless design. It's not just about the design, it's about making sure you have the capacity to route the potentially increased flow from the larger surface area directing it all in one/two directions rather than say 6 or 8. Dark matter scientist, can breathe underwater, mind reader and can freeze matter just by willing it. Trust me, its in my sig. Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 7Mar 17, 2021 9:19 am Noname Pombearinoz Noname Im sure it can be done, but as above, you need specialist advice and design. Keep in mind that it's not just the roof that will need designing and engineering, but also roof and stormwater plumbing considerations Noname thank you for your response. The stormwater requirement is an excellent point. It is on my list but you are right I should highlight it to the roof person more strongly to esnure it is a seamless design. It's not just about the design, it's about making sure you have the capacity to route the potentially increased flow from the larger surface area directing it all in one/two directions rather than say 6 or 8. Ahh - you are right. We will definetely need new soakwells as the current property has none!! We have never had any issues with pooling of water but I think that is because the gutters were so rusted they effectively acted like a sprinkler system so that the water dripped over a large area and was absorbed by the sand. As you identify - will be very different when effective gutters and downpipes send all the water to just a few points. Thank you - have a wonderful day. Greatly appreciate your response Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 8Mar 17, 2021 9:34 am You will require a timber frame within a steel frame design/detailing Here use this as a typical guide Using Steel "C" Purlins for a loft floor Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 9Mar 17, 2021 2:43 pm StructuralBIMGuy You will require a timber frame within a steel frame design/detailing Here use this as a typical guide Using Steel "C" Purlins for a loft floor Cheers Chris Thank you so much - will have a good look at the drawings now. It is very generous of you to share your expertise - thank you. Re: CAN WE HAVE A SINGLE GABLE ROOF THAT COVERS THIS SPAN? 10Mar 17, 2021 3:12 pm Here you might find this also useful Loft Dormer Bay Window one of a dozen windows and skylights that can a difference Cheers Chris Designer,Engineer (Civil,Const & Envir),Builder,Concrete & Masonry Contract.Struct Repairs I would say both styles you have pictured are steel. The lower chord of the first pic would be a massive lump if made using timber considering the size of the rafters. If… 1 6801 Hi, Really struggling to find some consistency amongst Span Tables, can anyone help… 0 3082 Hello All 🙂 We are planning to start our journey of construction our first home. We zeroed down on Metricon and henley homes based on design suitable for our lot and… 0 9846 |