Drywell under a 10 story building

Question

Drywell under a 10 story building

ocgeo (Geotechnical)

(OP)

23 Jul 21 04:10

Do something seems incorrect with funneling 7,500cubic feet of water (major storm event) and all other site water into a drywell directly beneath a 7 to 8 story building at a depth of about 50 feet.

The site is underlain by an alluvial deposit with varying soil layers of silt, sand, cobbles and boulders. Possible collapsible soil, piping, 50 foot pressure head due to storage of water during infiltration.

HTURKAK (Structural) · Answer 1 · 2021-07-23 08:11:22

I fully agree with your concern ..Your post reminds to me , PIZZA TOWER.. The dry well SHALL NOT BE USED for gully.

dik (Structural) · Answer 2 · 2021-07-23 13:59:10

or the basement as a sump. lol

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

Ron (Structural) · Answer 3 · 2021-07-26 10:11:19

RE: Drywell under a 10 story building

Ron (Structural) 26 Jul 21 10:11

bad idea

geotechguy1 (Civil/Environmental) · Answer 4 · 2021-07-29 09:28:06

RE: Drywell under a 10 story building

geotechguy1 (Civil/Environmental) 29 Jul 21 09:28

This thread makes me anxious lol

GeoEnvGuy (Geotechnical) · Answer 5 · 2021-07-30 12:38:18

Usually its a lot cheaper to build storm water retention structures underneath the parking lots rather than underneath the building.

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Drywell under a 10 story building