Problem fitting floor to ceiling bay window

[Kenn7]

Hi all,

I am in the process of building a new, square bay for windows and doors on the rear of my property. It will be floor to ceiling glass about 2.8m wide x 1.5m deep x 2.45m high with a flat roof. The foundation have gone in, but before I build the footing up to floor level, I was hoping some one would help me solve a few problems I'm anticipating when it comes time to fit the windows and doors.

I doubt the doors could take the weight of the flat roof without problems, so I intend to fit a lintel (probably about 100mm angle iron), and to do this I will need to fit support pillars (possibly 70mm square section Aluminium) at either side of the door at the outer corners of the bay. My first problem is I have no idea how to attach the bottom of these pillars to the brickwork such that they will be strong enough for the job and would not show below the cills, just clean brickwork. A second problem is how I attach the lintel and roof joist securely to the house but still allow for thermal movement.

Any advice would be very much appreciated

Thanks in advance

 

[daviddave]

Hi,

could you post a sketch of your project?

For the thermal movements of the lintel, use telescopic joints and slotted holes.

The pillars should be not less resistant of the lintel.

Flat roof implies snow: probably you need a calculation of the system.

 

[chappers]

agree probably needs an engineered solution.