H
I would like to have explained to me how it works with rafters and roof battens for a shed roof.

In some drawings/pictures, the rafter has an underlying roof batten, and the whole thing is placed on top of the wall plate (image 1).

In other cases, there is no such roof batten, and instead, a batten (image 2) is placed spanning between the two wall plates, and I assume that a roof batten is then attached to the side of the wall plate to subsequently mount the ceiling onto.

What I wish to know is the underlying batten that spans between the wall plates in image 1. What is the reason for laying it on the wall plates? Is it just that it's more convenient with a horizontal batten when building the rafter in advance, or can it just as well be attached separately?
 
  • Drawing of a shed roof truss with a diagonal brace and supporting beam placed on wall plates, illustrating construction elements of a sloped roof.
  • Two wooden framework structures with slanted roofs under construction, illustrating roof beams and connections in a monopitch roof design.
Image 1 becomes more like a truss and allows longer spans.
 
H
Lulaua Lulaua said:
Picture 1 becomes more like a framework and allows for longer spans.
The purpose is for the lower rule to receive weight that is directed onto the wall plate at longer lengths, i.e.

So on a small house or garden shed, the lower rule does not need to rest on the wall plate as there are no large lengths, provided the roof rules are placed 60cc on top of the wall rules.

Am I understanding this correctly then? :)
 
H
Anyone other than Lulaua who might be able to give me an answer to my question? :)
 
Rickard.
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