Compensation ground problem

[Helen7654]

Hello! We are in the process of building a new house and there have been issues with the concrete slab. It has settled the most in the middle by 5 cm... it's a compensation foundation with 11 layers of foam plastic. Class 200 at the supports and otherwise Class 100 foam plastic. A geotechnical investigation has been done. Now to the question - are there industry standards or building regulations for compensation foundation? Other houses in the neighborhood have all the foam plastic overlapping. We only have about a 5 cm overlap on the foam plastic. Could this matter? Our foundation is more divided into zones, not like a single "cake" with foam plastic.

Does anyone have information on what regulations apply to the construction of compensation foundations?

Grateful for tips on regulations or literature about this!

 

[Petter Forsen]

Hello! We are building a new house and there has been a problem with the concrete slab. It has settled the most in the middle by 5 cm..it is a compensatory foundation with 11 layers of foam plastic. Class 200 at the edges and otherwise class 100 foam plastic. A geotechnical survey has been done.
Now to the question- is there an industry standard or building regulations for compensatory foundation construction? Other houses in the neighborhood have all foam plastic overlapping. We only have about 5 cm overlap on the foam plastic. Can this matter? Our foundation is more divided into zones like.. not as a single "cake" with foam plastic.

Does anyone know the rules that apply for constructing compensatory foundations?

Grateful for tips on regulations or literature about this!

Looking for the same since it seems we need to do the same