Engineering Design Standards (PDF) - City of Southfield

1. All public storm sewers must be located in a public right-of-way or an
easement. Standard easement forms are available at the Engineering
Division. The easement size will vary as required for maintenance and
access. The minimum storm sewer easement shall be twenty (20’) feet.
The dedication of the easement will be required prior to use of the system.
2. Any storm sewer that accepts runoff from abutting property or public
right-of-way must be placed in a minimum twenty (20’) foot storm sewer
easement.
3. All public storm sewer shall be a minimum of twelve (12”) inch diameter
Cl.IV concrete pipe with premium gasketed joints.
A. GENERAL:
VII. PAVING AND GRADING
1. All public paving shall conform to the current standards and specifications
of the City of Southfield.
2. Where required, the City of Southfield pavement details shall appear on
the plans.
B. ON SITE:
1. A cross section of all on-site paving is required on the plans.
Minimum requirements are as follows:
a) Commercial and Multiple:
Three (3”) inch asphalt on six (6”) inch gravel base;
Six (6”) inch concrete.
b) Industrial:
Four (4”) inch asphalt on eight (8”) inch gravel base;
Eight (8”) inch concrete.
These minimum requirements are based on adequate sub-grade, sub-grade
drainage and average live loads. Each site will be examined individually
and additional pavement thickness and/or increased base requirements
may be necessary.
/Forms/Site Plan Design Standards 10-01-07 Revision)
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