Backfill/soil requirements on drawings

12” min of 3/4” clean stone free of fines. If clay is under slab on grade specify removal to frost depth if unheated area. Drainage provided to remove water from foundation are.

I try to minimize depending on a geotechnical report as many times these reports offer suggestions, alternatives, etc. without specifying anything highly detailed. I have taken recommendations out of the geotech reports and integrated some of their language into my specifications or general notes.

Geotechnical reports often use "may" or "recommend you consider" or similar "soft" language like that which is ill suited for contractual language needed in plans and specs like "contractor shall."

Lets say dont have a geotech report, using prescriptive values.

Are compaction to SPDD 95% generally acceptable?
Backfill lifts 2'-0" behind walls and compact?
Proof roll slab subgrades, k=100 pci min?

I dont want to go too far with specs, but want something as a catch all

You want your walls to blow out?

jhnblgr said:

You want your walls to blow out?

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Of course not.