0

I have a single story home built on a concrete slab using post and beam construction. I have 4x4 posts spaced 5 feet apart along the exterior wall with 4x8 beams holding up a 4" tongue and groove roof with composite shingles.

enter image description here

I am considering the removal of the post and replacing it with a sufficient header and jack studs so that the window isn't bisected by the post.

I know having a professional engineer come and evaluate is my best option, but I am also considering over-speccing it if I can arrive at some kind of rough estimate for an appropriate header and supporting jack studs. Any advice is greatly appreciated!

  • 1
    Post and beam is so far from everyday construction techniques that use of anything but an engineer's analysis just seems wrong. The kings and jacks at the sides, and hte loads they support are totally different from conventional stick construction. – bib Jul 26 '15 at 21:29
  • 2
    Move the window, leave the post alone. Or leave the window, and leave the post alone. You don't have enough headroom above that window opening to put in adequate framing to do anything else (courtesy my gut, which is not licensed to perform engineering in any political jurisdiction, but which is often correct anyway.) – Ecnerwal Jul 26 '15 at 22:19
  • 1
    @Ecnerwal Just saw your comment, while I was posting the answer below. I think I would trust your gut on this one - mine is in agreement. – ALAN WARD Jul 26 '15 at 22:24
  • You're removing a vertical support from the structure. What are the proposed jack studs sitting on that will reliably transfer the beam load into other vertical support posts? The wall framing is not a support structure in this construction and if those jack studs are merely planted on the floor plate without a post beneath where each side contacts it, you're merely creating a cosmetic application that gives a facsimile of framed construction support without the support. Looks pretty... – Fiasco Labs Jul 26 '15 at 22:47
  • Agree that the structural concerns above make changing things difficult. Have you considered 2 windows -- 1 per hole? – Aloysius Defenestrate Jul 27 '15 at 2:09
2

Removing the vertical post and finding some other way of supporting the roof beam will be complicated, specially since there is very little space between the window top and where the roof beam enters the wall. This is where you would need to insert a cross beam or similar to support the load from the roof. Needless to say, it will not be pretty and would probably still block a large part of your existing window.

Alternatively, you could consider moving the window. There seems to be sufficient space to the left of the photo. Although it would be a bit more work, no structural elements will be compromized, and most of the covering materials taken off to make space for the window could be re-used to fill up the gap on the other side.

  • Thanks for the insight. I think you provided the answer I was really looking for: whether or not it was viable and if there would be a straightforward solution... for me it's sounding like the costs aren't going to be worth the benefits, so I think I'll just leave the structure alone. – Wilco Jul 27 '15 at 21:57
  • @Wilco Wise decision! ;-) – ALAN WARD Jul 27 '15 at 22:02

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.