HomeMy Public PortalAboutCity of OlivetteSection 520.230.Minimum Standards and Safety Precautions.
[R.O. 2008 §70.215;Ord. No. 551,6-13-1961;Ord. No. 2167,
3-25-2003]
A.A permit shall be issued and shall remain in force only upon
compliance with the following requirements:
1.Adequate provision shall be made to prevent any surface
water from damaging the cut face of an excavation or the
sloping surface of a fill.
2.Retaining walls or cribbing shall be required whenever
necessary to prevent the surface of any excavation or fill from
exceeding at any point the maximum allowable slopes set
forth herein.
3.All drainage provisions shall be of such design as to carry
surface waters to the nearest practical storm drain,natural
watercourse or street approved by the Building Official and
the Metropolitan St.Louis Sewer District as a suitable place
to deposit and receive such waters.
4.No excavation shall be made so close to the property line to
endanger any adjoining public or private street without
supporting and protecting such public or private street or
property from settling, cracking or other damage.
5.Prior to the initiation of any work under a grading permit or
other permit required under this Article,the owner or permit
holder shall cause to be clearly demarcated with survey
stakes or similar devices placed by a land surveyor licensed to
practice by the State of Missouri each boundary corner of
such property and shall maintain the survey stakes or similar
devices for the duration of work authorized under the permit.
6.Materials for fills shall consist of material obtained from
excavation of banks,borrowed pits or other approved source.
Material shall be free of vegetable matter and deleterious
material and shall not contain large rocks or lumps.
7.Minimum standards of excavation and fills:
a.No excavation shall be made with a cut face steeper in
slope than two (2)horizontal to one (1)vertical,unless
the material in the excavated face is stable at a steeper
slope as determined by experience for similar materials
under comparable conditions and so certified by an
experienced registered soils engineer.
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b.No fill shall be made which creates an exposed
embankment face steeper in slope than three (3)
horizontal to one (1)vertical.The embanked end of the fill
shall be uniformly compacted as provided in Subsection
(8)hereof and stable under the proposed conditions.If a
steeper slope is proposed,its stability shall be certified by
an experienced registered soils engineer.
8.Compaction of fills.All fills intended to support buildings or
structures or sewers and conduits shall be made to a
minimum ninety percent (90%)compaction.Compaction of
other fills shall be required where same is necessary as a
safety measure to aid in preventing the saturation,slipping or
erosion of the fill.The requirements of the Building Official
for the compaction of fills shall include,but shall not be
limited to, the following:
a.Grading tolerance.Areas to be graded by cutting or filling
shall be rough graded to within two-tenths (0.2)of a foot
of accepted elevation after allowance has been made for
thickness of top soil, paved areas and other installations.
b.Preparation of the natural ground surface by removing
top soil and vegetation and by compacting the fill upon a
series of terraces.Hillside or slope fills shall require
plowing or scarification of original ground.
c.Control of moisture content of the material used for the
fill.If fill material moisture content is below the
requirement for compacting to maximum practical
density,water in proper amount shall be added.If
moisture content is too great,fill material shall be
aerated by blading or other satisfactory methods to
reduce moisture content.
d.Limitation on the use of various kinds of materials.Frozen
materials or soft,mucky,friable,easily compressible
materials shall not be incorporated in fills intended to
support buildings,structures,sewers or conduits or in the
embanked ends of fills.In heavy rain interrupted work
shall not be resumed until moisture content is
satisfactory.Fill material shall not be placed,spread or
rolled while the ground is frozen or thawing.
e.Maximum thickness of layers of the fill to be compacted
shall not exceed eight (8) inches.
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f.Compaction shall be by tamping,sheeps foot rollers,
multiple wheel pneumatic or other type rollers.Rolling
shall be continuous until desired maximum density is
obtained.
g.Density of the completed fill shall depend upon the
location and use of the fill as required by the Building
Official.
h.Top soil disturbed by grading and building operations
shall be stripped and piled for storage in an amount
necessary to complete finished grading.
i.Timber,logs,trees,brush,vegetable matter and rubbish
of any description shall be removed and disposed of so as
to leave the disturbed area with a neat and finished
appearance.Tree stumps,masonry and other
obstructions shall be removed to the following depths:
Paved areas.Two (2) feet below subgrade
Lawn areas.Two (2) feet below finished grade
Solid rock,shale or similar materials shall be removed to
a depth of fifteen (15)inches below subgrade for paved
areas and two (2)feet below finished grade for lawn
area except where it is impractical because of rock
outcropping.
Section
520.230
Section
520.230
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