Concrete classes.

**RETIRED** · 19th June 2003, 07:42 PM

Gooday all.

My brother in law is having a house built.

Can some one tell me what class W, class P amd class M concrete slabs are?

Ta muchly.

**Eastie** · 20th June 2003, 02:16 PM

In realtion to slab foundations (there is no W):

M = moderately reactive clay or silt sites - moderate ground movement from moisture changes

P = soft soils, soft clay, loose sand, collapsing soils or areas subject to errosion, soils subject to abnormal moisture conditions, or sites which don't fit other classifications

Not sure what they mean in relation to the actual slab though ?

**RETIRED** · 20th June 2003, 02:47 PM

Thanks Eastie, kinda figured you would know.

Would love the access to some of the sites you have.

**Eastie** · 20th June 2003, 03:38 PM

Happy to help. This is actually one I deal with from week to week.

In realtion to P (problem sites), the slab & foundation must be engineer designed. For other classifications you follow the australian standards & building code.

**soundman** · 23rd June 2003, 10:27 PM

Say eastie must have enough info for his own web site.

how about "easties safe & sound link page"

**Eastie** · 24th June 2003, 10:24 AM

Here's a web page just for you soundy

www.zombo.com

------------------
Of course it's safe, trust me ......

**RETIRED** · 24th June 2003, 11:59 PM

Reminds me of some people I know, all talk no action

**soundman** · 29th June 2003, 09:22 PM

????? What THE......????

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