I am planning on creating a loft space for storage use only.
Currently the loft\roof is supported by purlins and collar's.
The plan is to remove the collar's as the are approx. 1.5m high from the the floor(ceiling joists).
Reason for this that they are in the way an accessing the stored items can get a bit difficult.
Now for the details:
1930 Semi detached bungalow
Roof style = hipped roof
Loft length = 10.1m
loft width = 7.6m
Loft height = 2.8m
-Insert new longer and stronger purlin 9x3
-Floor support Two 9x3 bolted together with 10mm steel plate sandwiched.(red)
-Vertical purlin supports 6x3 (black)
-Add collars(Ties) at a higher level on each rafter 6x2 bolted in.
-7x2 at 300mm centers for joists with joist hangers.
- Remove old collars only.
Image one is a draft of what I plan to do.
Loft as it is
Wierd purlin support
More pics in my album
I will be seeking advice from a SE coming this weekend and also will apply to BR. But Just would like to ask on here as there seems to be alot of people with knowledge on here.
1. Steel or will two 9x3's with 10mm steel plate be ok?
2. Two 9x3 be ok without the steel plate?
3. As the collars are preventing the roof from opening up(assuming outwards force) will the new purlins and vertical supports, support the outward force?
Thank you in advance