Geotechnical Report 10a

What type of recommendation would not typically be included in a geotechnical report?

• Pavement thickness

• Degree of compaction

• .Height of the structure

• Footing depth and width

Which item is the most important to be performed before any underground work is started?

• Draw a sketch of the site.

• .Have existing underground utilities located.

• Decide how many boreholes you will need to drill.

• Set up a pre-grade meeting.

In the Earthwork Recommendations section, which of the following type of soil or conditions was not addressed?

• Rock fill

• Transition pads

• .Expansive soil

• On-site material

• None of the above

According to the boring and trench logs, at a depth of 1 ft or deeper in the southern portion of the site, expansive soils are expected to be encountered.

• True

• .False

Cut slopes excavated into undisturbed Mehrten breccia or conglomerate should be stable if cut no steeper than 1:1.

• True

• .False

Regarding fill slopes, which one of the following statements is false?

• .If a keyway is placed at the toe of a 3:1 slope no benching is necessary while placing the rest of the slope fill.

• Fill slopes must be built from the bottom up—not pushed out from the top.

• Track walking slopes for compaction is not acceptable.

• The keyway shall be a minimum of 15 ft wide and sloped downward into the slope at 2%.