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Sidewalk Thickness
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Sidewalk Width
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Sidewalk Location
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4 inches thick for regular sidewalk.
6 inches thick through driveway areas. |
Cul-de-sac and Local Streets 4-feet wide.
Commercial areas Collector streets Arterial streets 5-feet wide. |
2 feet from the property line to the backside of the sidewalk.
Deviations from this must be approved by the City Engineer’s Office. |
Permits
Permits to install new or repair sidewalks must be obtained prior to construction. A permit can be obtained at the City Engineer’s Office. Construction of sidewalk for new building or house construction is covered under the building permit for that work.
Concrete
The cement mix shall meet the current specifications of the City Engineer’s Office for Class M6 Concrete (4000-psi) as specified in the SDDOT standard specifications.
Stakes / Grades
City Engineering staff will assist with setting line and grade of new sidewalk.
Forms
Forms shall be straight 2 x 4s or 2 x 6s or approved steel forms that meet the appropriate depth for the installation. They shall be securely held in place and lined up by a string line.
The forms shall be set so the sidewalk will slope toward the curb at a rate of 1/4 inch per foot of width. After the forms are set, the City Engineer’s Office will inspect and approve them prior to pouring the cement mix.
Base
The base shall be well tamped and compacted, and any spongy or soft material unusable for foundation shall be excavated and replaced with suitable material. A two-inch (2") gravel cushion is recommended.
Finish
Concrete shall be well spaded against forms. Finish to be accomplished by striking off with a straight edge, after which it shall be floated with a wood float. Final finish to be made by troweling smooth with a steel trowel, after which it shall be brushed crosswise with a fine hair brush or broom.
Joints and edges shall be finished with an approved 1/2-inch edging tool. Contraction joints shall be formed at intervals equal to the width of the sidewalk by means of a grooving tool, to a depth of at least one fourth the thickness of the sidewalk.
Joints
Premolded expansion joints shall be placed adjacent to existing walk at intervals of approximately twenty-five feet (25'), and at the driveway section.
Disposal of Old Concrete
The disposal of concrete taken out is the responsibility of the permit holder. Disposal shall be made at an approved site.
Acceptable Repair Options
Vertical Seperations 3/4" Or More
Many factors bring upon vertical separation in sidewalk panels; the two most common causes are:
- Tree roots raising one or more panels.
- Settlement of a utility trench.
Acceptable Repairs
Remove and replace affected panel(s), Mudjack or lift panel manually, or grind down affected panels. (Note: mudjacking or grinding are not recommended when caused by tree roots)
Grouting is prohibited for the repair of vertical separations and spalling.
Horizontal Seperations 3/4" or More
Filling of cracks with an epoxy crack filler is acceptable for separation widths of 0" to 1 1/2".
Separations wider than 1 1/2", or panels with multiple cracks, need to be removed and replaced.
Grouting is not a recommended repair because the affected panel(s) move around and tend to break the grout out of the crack.
Holes
Hole(s) may be filled with grout or an epoxy crack filler. Proper preparation of the affected area prior to the use of these materials is a must for proper adhesion.
Spalling
Spalling is the condition where the cement has deteriorated and the aggregate below the surface of the sidewalk are exposed. Repair of this condition requires removal and replacement of the affected area.
