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block strength/type for sub structure
Anonymous user 09/03/2024 - 3.24 PM
My engineer's drawings notes state I need 7.3N blocks for the substructure and also a note that says no lightweight/thermal blocks below ground. The only 7.3Ns I can see to buy are called Ultra lightweight but then in the specification notes it actually says 7N. Am I better to just use 7N solid dense blocks?
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4 Answers
Neil Gardner construction
No reviews yet
You need to use 7.3 n dense concrete blocks 100 mm x 225mm x 440 mm
Answered24 September 2021
26
Anonymous user
7.3n dance concrete block will be alot stronger and kast longer than a thermolite block 👍
Answered28 August 2021
0
JWP Builders
Rating: 5 out of 5
Essentially you must use dense 7n blocks underground. However...thermalite do make a trench block which is made from similar composite to thermalite 3.5n blocks. These are deemed to satisfy regs for domestic buildings. For high rise i doubt if they would be suitable. Theres always exceptions to any rule !
Answered23 September 2021
0
Bennett Brickwork
No reviews yet
A block is 100mm x 215!!mm x 440mm
Answered25 September 2021
0