Lintel Required? 1

[XR250]

Working on a project where an addition is being constructed off the rear of the house. Due to the crappy condition of the brick veneer and challenges supporting it or attaching thru it, we have decided to remove most of it.
The Arch. wants to leave a little over the door below.
Do y'all think I need a lintel or should I cantilever the brick? The shear and deep beam bending stress in the brick is insignificant however, I do not want to stray too far from accepted practice.
I guess I could bolt a short lintel to the existing header. Not sure how much good it will do. I guess it depends if the contractor is going to build back that short segment or just cut off what is there and patch it up.
Thanks!

 

[phamENG]

Tomfh - shoring, too. It's important to consider the full weight of the rectangle or you can end up with deflections while the mason is laying the brick. That usually only comes into play on longer spans (double doors and larger), but I have seen it. Wound up with some questionably large bed joints as he fought to keep the masonry level.

 

[XR250]

It's important to consider the full weight of the rectangle or you can end up with deflections while the mason is laying the brick. That usually only comes into play on longer spans (double doors and larger), but I have seen it

I usually see masons cramming 2x4's under lintels to add support while the mortar cures - mainly on larger spans.

 

[JLNJ]

I’m not a fan of the blanket statement that a lintel “just carries the triangle”.

It far better to know how your system acts and design accordingly. If there is a control joint above the left side of the door (and there should be) the lintel carries the entire weight. Assuming just a small triangle underestimates the load by 2000%.

 

[XR250]

....or if there is not enough restraining masonry on each side of the opening to allow arching action.

 

[dik]

Support of the triangle does not rely on arching action.

Dik

 

[XR250]

Dik,

My understanding is that the triangle loading only applies when there is sufficient arching action of the brick above the opening. This requires buttressing by the adjacent brick segments to prevent "spread" of the arch.