I’m looking to put up about 14 metres of bookshelves (5 separate shelves between 1.2metres and 3.5 metres) on a wall (brick wall/masonry) built in the 50s using approx 32 strong brackets in the attic (no steel in the floor that I can detect). Not an earthquake prone area. It’s a terraced red brick house (so not concrete to my knowledge)
Wall height: approx 230cm tall, triangular at the top to a pitched roof with a 1cm down to 2.22cm incline and equidistant.
The bottom 1m 20cm is straight walls.
Wall is in good knick, signs of the previous owner having drilled into it before in multiple places.
Looking to place shelves getting longer and longer going down the wall with a 35cm or so gap vertically between them eg.
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Small beams about 60mm squared at the edges of the third shelf from the top.
Shelf lengths:
177.5cm 257cm 325cm 356cm 356cm
Not sure how I’ll attach the shelves, but probably with rawl plugs and 4mm screws that are about 8cm deep.
Not sure how thick the wall is, possibly 15-20cm - would it be a good idea to measure using the old holes and checking depth that way? I have a handheld wires and pipes detector.
Because these are bookshelves, I don’t want to pull the wall down! Will it be all right? Probably 100kg - 130kg or so total of books.
Brackets are just angle brackets so upside down L shape.
Bracket spec:
Depth: 38 mm Height: 300 mm Width: 250 mm
Any advice would be amazing, thank you!
Edited to include details to answer questions in comments.