The Soils Engineer shall supervise and control the compaction
of all fills, and shall certify that the completed fill complies with
the compaction requirements of this Chapter. For individual projects,
it may be necessary to make adjustments predicated upon the analysis
of the material proposed to be used for the fill and other conditions
pertaining to the project, and such adjustments may be made upon written
recommendation of the Soils Engineer, and the approval of the Building
Director.
(Ord. 48 § 5, 1969)
(a)
Clearing of Site. All timber, logs, trees, brush, objectionable amounts
of vegetable matter, debris and rubbish shall be cleared and removed
from the site.
(b)
Preparation of Surface. The surface shall then be plowed or scarified
to a depth of at least six inches (6") and until the surface
is free from ruts, hummocks and other uneven features which would
tend to prevent uniform compacting by the equipment to be used. The
site shall then be disked or bladed until it is uniform and free from
large clods; brought to the proper moisture content; and compacted
in the some manner and to the same degree as required for the fill
material. The foundation shall be compacted to a full depth of disturbance
which shall be not less than six inches (6")
(c)
Fills on Hillsides or Adjacent to Slopes. Where fills are made on
hillsides or adjacent to slopes greater than one (1) vertical to four
(4) horizontal, continuous steps or benches shall be cut into firm
or fully compacted materials before filling is begun.
(Ord. 48 § 5(A), 1969)
Materials for the fill shall be approved by the Soils Engineer.
It shall be soil free of rocks or lumps of greater dimension than
six inches (6") in the top eighteen inches (18") and shall
not contain paper, wood, glass, tin, metal, cardboard or any other
deleterious substances.
(Ord. 48 § 5 (B), 1969)
(a)
Depth Requirement. All fills more than one foot (1') in depth
shall be compacted to not less than ninety percent (90%) of the maximum
density as determined by the test method ASTM D 1557 and ASTM D 1556
and latest revisions.
(b)
Field Density Tests. Field density tests shall be made at a frequency
determined by the Soils Engineer, but in no case shall tests be made
at a greater interval than two feet (2') of vertical fill or
each five hundred (500) cubic yards. Where sheepsfoot rollers are
used, the test may be taken in the compacted material below the disturbed
soil to a depth of several inches; density readings shall be taken
in the compacted material below the disturbed surface. No additional
layers of fill shall be spread until the field density tests indicate
that the specified density has been obtained.
(c)
Removal of Loose Soil. If loose soil remains on the slope after the
final elevation of the slope has been attained, it shall be removed
or be compacted to eighty three percent of the test method used at
not more than nine inches (9") below the surface of the slope.
(Ord. 48 § 5(C), 1969)
No fill material shall be placed, spread or rolled during unfavorable
weather conditions. When the work is interrupted by rain, fill operations
shall not be resumed until field tests by the Soils Engineer indicate
that the moisture content and density of the fill are satisfactory
for resumption of the filling operation.
(Ord. 48 § 5 (D), 1969)
