External wall with no lintle

[Jaygray]

I have a 1920s home with soils wall..

The 1500cm opening above my kitchen has no external lintle. It seems to have. Very low arch.

The internal course is supported by a wooden lintle.

I want to ad a lintle to be safe however, I won't be able to get. 150mm heading. The maximum I can get is 100mm and thats even pushing it.

I'm concerned that stitch drilling the brick out will disturb the low arch.

Any suggestions?

 

[tony1851]

If it is a shallow arch, it suggests that it was originally part of an opening in the rear wall, eg a door and adjoining narrow window?
Can you not leave the arch as it is? - they are intended to be self-supporting.
If you really feel you want to support it, a steel rectangular hollow section 100 x 60 laid flat would probably work on that span, but you would need to be really careful as to how you support the arch. Digging away at the ends for a bearing will not help. Arches work by compression and if you try to support it with Strongboys at any point, you can easily destabilize it.

 

[stevie888]

Properly built arches are immensely strong. Let well alone unless there are signs of distress