§ 7.5-69. Construction.

(1)

Compliance. All construction shall comply with Georgia DOT Standard Specifications Construction of Road and Bridges, with Supplemental Specifications and Standard Details, 1993 edition, as amended, unless noted otherwise.

(2)

Clearing and grubbing. Grading sections shall be cleared and grubbed of all trees, bushes, stumps and debris. Such debris shall be disposed of in a lawful manner. There shall be no burial of such debris on site.

(3)

Grading.

(a)

Grading shall be accurately done to the lines and grades shown on the plans. Embankments shall be placed in uniform layers not to exceed six (6) inches and compacted to a density of ninety-five (95) percent of the maximum laboratory dry weight per cubic foot as determined by AASHTO Method T-99. The contractor shall add moisture to the material as required as it is placed to obtain required compaction.

(b)

Compaction test shall be provided by the developer and shall be performed by a geotechnical engineer licensed in the State of Georgia. Required test shall be every two (2) feet vertically and five hundred (500) feet horizontal.

(c)

Maximum construction cut and fill slopes are as follows:

Depth of cut or fill	Cut slopes	Fill slopes
2 feet or less	4 to 1	4 to 1
2 feet to 5 feet	3 to 1	3 to 1
5 feet to 10 feet	2 to 1	2 to 1
Over 10 feet	2 to 1	2 to 1

 

The depth of cut referred to shall be constructed to the maximum cut or fill occurring in any one (1) section of cut or fill. The slope on cut or fill slopes shall be uniform throughout for each section or cut or fill. When a cut is made in rock that requires blasting, the slope may be changed to vertical slope upon the written approval of the public works director.

(4)

Subgrade.

(a)

After the earth work has been completed, all storm drainage and other underground utilities have been installed under the roadbed, and the backfill in all such ditches thoroughly compacted, the subgrade shall be brought to the lines, grades and cross-section shown on the plans. Underground utilities located in the shoulder of the road shall not be installed until the seventeen-foot shoulder has been constructed to the subgrade level.

(b)

If any sections of the subgrade are composed of unsuitable or unstable material, such material shall be removed to the depth directed by the authorized representative of the city and replaced with suitable, thoroughly compacted material.

(c)

When the street is to be used for construction traffic before the paving work is completed, a layer of GAB can be laid as a traffic surface.

• This material shall not be used as part of the base material.

• It may be worked into the subgrade, or it shall be removed before the base course is set up for paving.

• Provision shall be made to drain low points in road construction when the final paving surface is delayed.

(5)

Curb and gutter.

(a)

Line and grade shall be set by developer's engineer, landscape architect, or land surveyor.

(b)

One-half-inch expansion joints or pre-molded bituminous expansion joint material shall be provided at all radius points and at intervals not to exceed fifty (50) feet in the remainder of the curb and gutter.

(c)

Cross-section shall be in accordance with section 7.5-70, standard details, detail 3.8.09.

(d)

All curbing within a public street right-of-way must be installed on a minimum of six (6) inches of compacted GAB graded aggregate base).

(6)

Street cuts.

(a)

The city's policy is no existing streets can be open cut unless unusual circumstances warrant it. No street shall be cut or bored without a written permit issued by the public works department. Application for such permit shall be made at least two (2) business days prior to the desired time for starting work.

(b)

All trenches shall be backfilled and compacted the same day the trench is opened. Compaction requirements are as follows:

• Trenches under paving shall be backfilled with GAB and returned to one hundred (100) percent compaction.

• Trenches elsewhere shall be returned to ninety-five (95) percent compaction.

(c)

If the city allows open cutting, all trenches under existing paving shall be backfilled and compacted in six-inch lifts and excavated to allow for concrete and asphalt to be placed as shown in section 7.5-70, standard details, detail 3.8.11. The edges of the paving cut shall be saw cut smooth.

(d)

Compaction test on cuts shall be made at two (2) per cross cut.

(7)

Underground utilities.

(a)

All utilities within the curbs shall be installed and the ditches backfilled and thoroughly compacted before any pavement or base is installed.

(b)

All utility manholes and valve boxes shall be brought to the finished grade within the roadway section.

(8)

Easements. Easements shall be clear of limbs and debris, graded smooth, and established in grass.

(9)

Foreign materials on streets.

(a)

The developer, builders, and/or homeowners shall be responsible for keeping dirt, mud, building materials, concrete, etc., off the pavement and curbing of existing city or county roads during construction of buildings in all developments covered by these regulations.

(b)

Before the streets are accepted by the City of Cartersville, all litter and trash shall be removed from the dedicated rights-of-way and surrounding areas.

(10)

Storm sewers. Pipe installation shall conform to Georgia DOT Standard Specifications for Construction of Roads and Bridges.

(a)

Before any traffic over a storm drain is allowed, the developer shall provide an adequate depth and width of compacted backfill to protect the structure from damage or displacement. Any debris or silt that constricts the flow through a pipe shall be removed by the developer as often as necessary to maintain drainage. All pipe structures shall be cleaned before the work is accepted. Any damage or displacement that may occur due to traffic or erosion shall be repaired or corrected at the developer's expense.

(b)

Minimum clearances are:

1.

One (1) foot between the bottom of the base or sub-base, if used, and the exterior crown of the culvert.

2.

A minimum of one-half (0.5) foot between underground utilities and exterior crown of culverts.

(c)

Trench construction for storm drainage pipe shall be in accordance with State Highway Standard 1030D.

(d)

Storm drainage pipe shall be bedded in Size No. 57 (1" to No. 4) per ASTM D-448 Table 1, standard sizes of processed aggregates when structural fill material is not available.

(Ord. No. 25-07, § 1, 6-7-07)