Kan. Admin. Regs. § 5-40-40 - Geotechnical investigation of all dams
(a) Each
applicant shall ensure that a sufficient geotechnical investigation is
performed on the proposed site for each dam to design the dam in accordance
with the regulations of the chief engineer and with sound engineering
principles and commonly accepted engineering practices. The materials under the
proposed dam, open-channel spillway, and borrow area shall be investigated
before design and submission of the application for a permit to construct a
dam. If unusual or unexpected foundation conditions are encountered in the
investigations required in this regulation, additional geotechnical
investigation and soil mechanics testing shall be performed as necessary to
design and construct the dam in accordance with the regulations of the chief
engineer and with sound engineering principles and commonly accepted
engineering practices.
(b) The
geotechnical investigation specified in these regulations shall be designed by
a licensed professional competent in geotechnical investigation and analysis
for dams.
(c) The geotechnical
information specified in these regulations shall be included in the engineering
design report and submitted with the proposed construction plans. The report
shall contain a general description of the geotechnical investigation,
including the method used for sampling.
(d) The soils sampled in all of the
geotechnical investigations shall be classified by using field classification
methods and the uniform soil classification system.
(e) The dam design shall make appropriate
accommodations for the geology discovered in the investigation.
(f)
(1) The
foundation of the dam shall be investigated to a depth of not less than
one-half the height of the dam at the location of the test hole plus five feet.
(2) If unweathered bedrock is
encountered before reaching the sampling depth required in paragraph (f)(1),
the sampling shall be done to the unweathered bedrock.
(g) The static water level in each test hole
shall be recorded.
(h) A
sufficient number of test holes shall be made in each open-channel spillway to
determine the stability of the spillway crest and the outlet channel down to
the streambed elevation.
(i) A
sufficient number of test holes in the borrow area shall be made to determine
the amount of suitable material available and to classify the soil to be used
in the embankment.
Notes
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