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Q: How many roof rafters needed 16 on center on a 30' span?
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What is the standard spacing of a roof rafter?

Rafters are 16" on center. Trusses are 24" on center. Or 450mm & 600mm australia


What is the spacing of roof rafters?

For wood framing it can be 16", 19 1/4" or 24 " on center.


What is the live load capacity of a roof framed with 2x4 rafters 2 feet on center?

You still need to indicate the pitch, the roof sheathing, and the shingle weight.


What is a sentence using the word rafters?

You can see the rafters of the roof very clearly here.


What is a roof ridge beam?

At the peak of the roof where the rafters meet instead of the rafters meeting each other, there is a beam between them that they rest against. It runs the length of the roof peak.


What is the purpose of a roof ridge?

To seal the ridge from weather. If a ridge vent is used it is just that, a vent for the roof.


i am a disabled in of a kidney,i am trying to get my house repaired,to be able to have weatherization,done to it, i need rafters done on my roof,before we can get it done?

in need of rafters on my roof,before i can have it weatherized


What is a purlin?

A longitudinal member in a roof frame, usually for supporting common rafters or the like between the plate and the ridge. One of several horizontal timbers supporting the rafters of a roof. http://www.bw-industries.co.uk/roof-purlins.htm


What type of architectural structure is a purlin?

A purlin is a structural part of a roof which is used to support rafters and carry the roof cladding By supporting the rafters they allow for longer roof spans to be created allowing for wider buildings to be created.


What is purlins?

A longitudinal member in a roof frame, usually for supporting common rafters or the like between the plate and the ridge. One of several horizontal timbers supporting the rafters of a roof. http://www.bw-industries.co.uk/roof-purlins.htm


No ridge board is needed in roof construction if the pitch is steep and the rafter are directly opposed?

It is true that no ridge board is needed if the pitch is steep and rafters are directly opposed. This is the only time a ridge board is not needed.


What would be the length of the roof rafters on a 16x20 shed?

If you had a 4/12 pitch and the ridge was running the 20' direction and you were planning on a 12" overhang, your 2x6 rafters would be just shy of 9'-6" each. If your framing is 16" on center you will need 34 of them.