CalvinHobbes Posted May 25, 2023 Share Posted May 25, 2023 Hello, the architect has specified mannock 215mm high 7.5N blocks for a course at the base. Does anyone know another equivalent? The local builders merchants off 5n or 7n which isn't 7.5n. Link to comment Share on other sites More sharing options...
Temp Posted May 25, 2023 Share Posted May 25, 2023 I suspect 7N will be fine as I doubt architects design things to be that marginal. We used mostly 7N blocks and we have B&B first floor. Just had to use 14N under some steel beams. 1 Link to comment Share on other sites More sharing options...
Temp Posted May 25, 2023 Share Posted May 25, 2023 Travis Perkins have 7.3N.. https://www.travisperkins.co.uk/100mm-blocks/solid-dense-7-3n-concrete-block-grey-100mm/p/700064 1 Link to comment Share on other sites More sharing options...
saveasteading Posted May 25, 2023 Share Posted May 25, 2023 I wonder what the mortar strength is. It is so variable that 0.5 variation in blocks should not matter...but you could ask. 1 Link to comment Share on other sites More sharing options...
dpmiller Posted May 26, 2023 Share Posted May 26, 2023 7N is actually 7.5... https://www.mannokbuild.com/aircrete-thermal-blocks/ 1 Link to comment Share on other sites More sharing options...
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