I have a walkout basement with a covered front porch 4'x 9', so the space under the porch is surrounded with concrete 9" walls. I want to cut a door in the basement in the concrete wall, empty the gravel and other stuff from that space and turn the space into a storm shelter. I will cut a small door in the 4' section which I enter through a closet. The wall is load bearing as above it is a concrete slab, and 10' of brick. What do I need to use for a header"?

  • 1
    You're probably going to want to contact a structural engineer, instead of a bunch of yahoos on the internet.
    – Tester101
    Apr 18 '15 at 3:24

Don't head off half cocked with internet advice and a 10" brick wall above. Hire a structural/civil engineer, and get an answer you can bet your house and/or life on - because you will be doing exactly that. Having got the advice, follow it carefully.

Given that you say "small door" your engineer might be able to give you a less painful solution by using a round-topped door that will act somewhat like an arch, for instance.

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