Short on Space for Eaves Lintel

[Eddman]

I am in the process of building a mono-pitch roof extension - to get a 17.5 degree pitch and enough space (150mm) below first floor windows and a 2100mm head height of patio doors i am struggling to get a lintel to fit in - how much can i notch a rafter? the opening size is 3.5m so a fairly large lintel will presumably be required?

And help will be very much appreciated...

 

[noseall]

Pitch the roof higher than the window sills then build leaded troughs around the window bottoms.
or...

Rip out the windows and replace them with shallower ones.
or....

Have less pitch on the roof.
or....

Reduce the height of the doors from a standard 2.1m to something a bit less.
or.....

Fit a mid-span purlin for the roof as long as it is practical to do so, i.e. gable end masonry etc.
or....

Give the bloke who designed it a kick up the erse.

 

[Eddman]

designer a kick up the arse i think!

i guess he wanted to show a good pitch and a standard door but didn't think about the actual structure / construction of it!

Thanks Again