1032.1 Scope. This specification covers reinforced precast concrete flared end sections for use at inlets and
outlets of rigid pipe culverts.
1032.2 Material. All material shall be in accordance with Sec 1026.3, except that marking required by Sec
1026.3.10 will be limited to Sec 1026.3.10.1.
1032.2.1 Steel Fibers. Steel fibers shall be in accordance with ASTM A820. The PAL process as outlined in Sec
106 shall apply to steel fibers used in flared end sections.
1032.3 Design.
1032.3.1 Standard Reinforcement. Flared end sections, utilizing rebar or cold drawn steel wire shall be in
accordance with the plans.
1032.3.2 Steel Fibers. Steel fibers may be used exclusively or in combination with standard reinforcement.
When steel fibers are used, the amount of steel fibers and standard reinforcement required shall be determined through proof of design testing accordance with ASTM C1765, Section 9, for Class III pipe of the same diameter. Proof of design testing shall be performed every three years and the results provided to the engineer upon request. Additional proof of design testing shall be performed when the type of steel fiber is changed or when the dosage rate of the steel fibers is changed.
1032.4 Basis of Acceptance.
1032.4.1 Acceptance Criteria. Acceptability of end sections for all diameters will be determined by the results
of such material tests as required in Sec 1026.3, by crushing tests on concrete cores or cured concrete cylinders, and by inspection of the finished end sections, including quantity and placement of reinforcement, to determine the conformance with the design and the freedom from defects.
1032.4.2 Workmanship. All protruding steel fibers shall be removed from the flared end prior to shipping.
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