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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    • CommentAuthorCranbrook
    • CommentTime3 days ago
     
    Ive come across the attached image for an insulated raft but I cant tell if it is meant to be showing a masonry wall or not?

    I'd be interested to know if it is in fact possible to build a single skin masonry structure on this foundation, with EWI adhered to the masonry. The blocks would be 7N thermolites at 140mm most likely
      51a7b663130fdd870d08fc717cea3cb5.jpg
    •  
      CommentAuthordjh
    • CommentTime3 days ago edited
     
    Yes, it is showing masonry. Your foundation engineer will design the slab and insulation to account for the imposed loads when s/he is given your design.

    edit: your structural engineer will design the wall to meet regs, given your location and what's hanging off it etc. The structural engineer may be the same as the foundation engineer or might not be. All depends on what they're comfortable with designing.
    • CommentAuthorCranbrook
    • CommentTime3 days ago
     
    Thanks, hopefully my SE will be able to do this!
    • CommentAuthortony
    • CommentTime3 days ago
     
    Yes but why use aerated blocks, they crack dreadfully, May as well use medium density concrete blocks -

    But I like it! Raft will need double layer of grids and possibly thickening at the edges. My engineer did that to me, and under internal load bearing walls. I requested a redesign and instead of 200 slab with thickened edges now have a 225thick reinforced monolithic slab with no thickening, no cracks or problems
    • CommentAuthorCranbrook
    • CommentTime3 days ago edited
     
    Posted By: tonyYes but why use aerated blocks, they crack dreadfully, May as well use medium density concrete blocks -

    But I like it! Raft will need double layer of grids and possibly thickening at the edges. My engineer did that to me, and under internal load bearing walls. I requested a redesign and instead of 200 slab with thickened edges now have a 225thick reinforced monolithic slab with no thickening, no cracks or problems


    The thermos were really just to keep weight down on the foundation and for ease of use tbh, and as they are 7N and I thought that they had better resistance to cracking than the standard thermos...

    I'm hoping that theres no need to thicken the edges and I have no internal walls (this will be for an extension on my own house - if it goes well I'll potentially use it for customers going forward).. I'll be running UFH in the slab so i'll have some mesh in the slab to help this
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