Posted: Dec 30, 2008 11:02 AM Reply
i am building/erecting a small model roof
from 2-1 timber,i have built a 600x400mm area roof on some ply and used a bit of 2-1 also for wall plate
i have drawn out my common rafters on some ply and erected the 1st part of the roof perfect
4 common rafters
2 crown rafters
pitch of roof i decided on was 40 deg
i am trying to cut and fix the hip rafters one by one,but seem to be either too short or slightly too long in my measurements everytime
i have worked out the exact angle/plumb cut etc etc
it is just the length i am out
i have been measuring from where the crown/common rafter meets the edge of the ridge and then down to the corner (without taking any part of the corner off)
my questions are,do i need to take corner off 1st,or can i do it without doing that?
where exactly do i measure from on timber,the point or where the plumb cut starts?
if i take out some of corner do i need to bare this is mind when marking out length?
at moment i seem to be nibbling out a bit from here,addding a bit from there,heads in bits and its not acurate enough for me to be confident to proceed to jacks
any help would be grateful