What is the equivalent to Mannock 7.5N?

[CalvinHobbes]

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. 

[Temp]

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. 

[Temp]

Travis Perkins have 7.3N..

https://www.travisperkins.co.uk/100mm-blocks/solid-dense-7-3n-concrete-block-grey-100mm/p/700064

[saveasteading]

I wonder what the mortar strength is.

It is so variable that 0.5 variation in blocks should not matter...but you could ask.

[dpmiller]

7N is actually 7.5...

 

https://www.mannokbuild.com/aircrete-thermal-blocks/