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Anyone have case histories for helical anchors used in California under seismic loading conditions (approx 10km from San Andreas Fault)? AB Chance website has one case, but it relies on the existing foundation for lateral resistance.

There are no structures on top, below, or on the slope. This is in a day-use recreation area.

I am looking for references for geotextile reinforced slopes with cohesive backfill. I am aware that typically cohesionless soils are used for backfill, however, it is desireable to use the onsite cohesive soils if possible due to the large area.

Are there slope stability programs which can analyze a geotextile reinforced slope, or do I need to use finite element analysis?

Does a Phase II ESA only include testing of soil, groundwater, and soil gas? If there is a structure at the site which may have lead paint and/or asbestos tiles, do these need to be tested as part of the Phase II? It was not clear from reading the ASTM.

Does a Phase II ESA only include testing of soil, groundwater, and soil gas? If there is a structure at the site which may have lead paint and/or asbestos tiles, do these need to be tested as part of the Phase II? It was not clear from reading the ASTM.

The telephone interview report was provided as an "alternate" report since there was no Sanborn Map coverage for the site. This was part of a phase 1 package with aerial photos, Sanborn Map, city directory, radius map, etc. The telephone interview report contained one other...

ASTM E 1527-00 provides standards for performing a phase 1 environmental report. The standard requires that interviews with government officials as, "a reasonable attempt shall be made to interview...". What is the industry standard of practice for "a reasonable attempt&quot...

I am looking for a method or reference for calculating the rotational spring value for a pile cap in sandy soil. The soil about 4 feet below the bottom of the pile cap is liquefiable. Is it conservative/sufficient to multiply the rotational spring for an individual pile by the number of piles...