Bottom of Fill Slope_Key/Anchor Detail Needed

[Hoagie]

I am about to begin grading a fill project (Building pad high: 2:1 slopes to daylight, below). The overall height of fill (over 60')will require a 6' wide bench, mid-height, per UBC. However, I will need some type of key at the bottom of slope (no walls will be considered by my client).

Any ideas, advice, or what-out-for-thats?

Thanks,

Mike

 

[GeoPaveTraffic]

What does your geotechnical engineer recommend? A 60 foot tall 2:1 slope with a building at the top requires engineering, not just a reference from the UBC. What are the soil conditions, fill type, existing slope, etc.?

 

[Maury]

I second the previous comment. This high of an embankment, with a building load and relatively steep side slope requires a geotechnical engineer. Slope stability is a potential disaster.

 

[Hoagie]

Maury/GeoPT,

Thanks for responding. Yes, a (final) geotech evaluation will be ordered in the mid-to-later stages of the design. Currenly, I am at a SD/DD-level for reasons of pursuing a use-permit: I am not at CD. So, I only need to show conceptual-level details.

Answers to your questions: Good fill quality/engineering soils are to be placed on a 3:1 (max) existing slopes that are not in 'slide' zone. Basically, good conditions without any tricky BS.

I am looking for general/loose dimensions of the key to communicate to the planners; later on, the geotech will specify, endorse, etc. etc. etc.

Again, thanks for responding.

Mike

 

[GeoPaveTraffic]

What you are asking is simply not possible without the information/analisys of an engineer with either actual data or at the very list a very good understanding of the conditions.

Waiting to the mid to late stages of design to get a professional geotechnical engineer involved is asking for a lot of problems, redesign, and added cost.

 

[cvg]

I second the previous opinions on getting a local geotech involved, even if it is just to bounce ideas off.

recommend you post this in the following forum:
Geotechnical Engineers
Slope stability engineering

you should be prepared to provide additional data on the geology, soils, loadings, etc.

 

[BigH]

hardycross - sorry, but your bosses are being fool-hardy. Now is the time that a geotechnical engineer should be involved - from conceptual to final details. What if your "conceptual" design is out to lunch? Don't think that a geotech will come in and think the geotech will specify, endorse, etc etc etc. brrrrrrr Listen to GeoPaveTraffic.