I am about to start building a shed and am planning the roof. I have decided on a flat (1 in 12 pitch) roof with 18m OSB boarding and EDPM on that.
The shed with be 2.4m across and I live in a light snow area.
I am planning to have a doubled up wall plate made of 2 2X4s.
The verticals posts will be 2X4 at 40m centres.
Therefore the span distance is 2.2m.
According to the tables, for this pitch, I can only use 2X6 rafters. And according to the tables I can have them at 600m centres.
I am glad I checked the tables because I was planning on using 2X4 - oops.
https://www.rightsurvey.co.uk/roof-rafters-span-tables-for-surveyors-roof-construction/
These are the tables I used.
Have I read these correctly?
Thanks
The shed with be 2.4m across and I live in a light snow area.
I am planning to have a doubled up wall plate made of 2 2X4s.
The verticals posts will be 2X4 at 40m centres.
Therefore the span distance is 2.2m.
According to the tables, for this pitch, I can only use 2X6 rafters. And according to the tables I can have them at 600m centres.
I am glad I checked the tables because I was planning on using 2X4 - oops.
https://www.rightsurvey.co.uk/roof-rafters-span-tables-for-surveyors-roof-construction/
These are the tables I used.
Have I read these correctly?
Thanks
