Attaching beam to single skin brick

[asnoop20]

I'm gutting a middle truss on a garage (see red). The trusses support concrete tiles.

I'll run new beams (I think the term is beam not joist) across the existing (see green) and will secure on the walls. The wall is single cavity brick on one side.

Although it's not a huge weight what would be recommended method for attaching the beams to the brick? From experience concrete screws into brick sometimes don't grab very well.

 

[Deluks]

You can't just remove a roof truss without knowing how it affects the roof and how to transfer the loads elsewhere. Have you consulted a structural engineer?

It looks like you are describing a purlin to run front to back?
Get those in first. What size timbers do you imagine will be needed?

How do they screw into the brick? (Not recommended anyway, a few screws into brick might not be adequate)

 

[asnoop20]

You've managed to tell me everything I already know and didn't ask, and ignored the question. Sigh.

Yes, somehow they will attach to brick. Somehow is the question.

 

[martygturner]

timber wall plate on top of wall, birds mouth cut and skew nailing with twisted strap to anchor the beam to the wall is the traditional method.

as you can see by the responses that people take the name of this forum to literally and spend all their time telling people that it cannot be done.

In your instance the roof is a engineered solution so you will need to replace the engineered section.

The beam that runs across the space at the bottom is to prevent the spread of the trusses which is done by using the traditional method as above. However the engineered solution relies on using thin timber that is braced using triangles, to get round this you will need to sister up up the chords, using the sisters to provide contact via the birds mouth to the wall plate and then supply the lateral stabilisation to the other trusses in the sequence, ie replace the web runners that runs across the braces with either noggins between the chords or a pair of of braces that run where the lower webs attach to the chords. You will also need to reinforce the nail plate. two triangles of ply will do the job.

Anchor the roof to the wall by using twisted strapping eg

 

[asnoop20]

Erm yes, so I'm removing the bottom chord and installating purlins going across, braced on the walls and the remaining 4 trusses. The truss I'm bastardising can't spread without pulling the purlins down.

Connecting the purlins to the remaining trusses is easy enough via hangers. The purlins will be going to brick, it's just how to connect them. I was thinking more wood vertically which the purlin sits on, which can span multiple bricks and therefore give better attachment.