Copyrighted by SPRINGDALE CODE & Municipal Code Corporation, 1998.

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Sec. 110-62. Standard details.

City of Springdale, Arkansas Standard Details for Street and Drainage Construction contains a few of the more commonly used pavement material combinations.

The engineer, with the approval of the planning and community development director or his/her designated representative, may use other material combinations if the flexible pavement layered theory is followed; the required structural number (SN) is provided; and the minimum layer thicknesses and the material coefficients shown below are used, with the exception that the ACHM surface thicknesses as indicated in the table is the minimum thickness allowed for each minimum pavement section shown. The LL and PI test results of the subgrade shall be used for verifying the final pavement structure.
Type of materialMaterial coefficient inch of materialMinimum layer thickness (inches)
Portland cement concrete pavement---***---5
Drainage blanket---***---2
ACHM surface course0.442
ACHM binder course0.442
Asphalt stabilized base (black base)0.254
Cement-treated crushed stone base0.254
Treated subgrade0.006
Crushed stone base (SB-2 or SB-3)0.144
Gravel base course (GB-2 or GB-3)0.114
Soil cement (400 to 600 PSI)0.206
Levelup course0.00Thickness as Needed

--***--- Part of the rigid pavement design, and the flexible pavement coefficients do not apply.

---***--- Drainage blanket shall be a minimum of two inches and shall consist of coarse limestone screenings, AHTD class 10 mineral aggregate, asphalt stabilized base, or other drainage material approved by the planning and community development director or his/her designated representative.

(Code 1973, § 29-62; Ord. No. 3011, § 1, 9-12-00; Ord. No. 3258, § 1, 2-11-02)

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