Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1978-02-16
1979-02-27
Shapiro, Jacob
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
405150, F16L 900
Patent
active
041416660
ABSTRACT:
Improved low headroom culvert comprised of a plurality of shallow arch-shaped corrugated culvert sections and elongated unitary load transferring stringer stiffener elements, the stringer stiffener elements being arranged in generally spaced parallel relation to each other and secured to the inside surfaces of said sections. The stringer elements extend for substantially the full length of the culvert thereby acting to integrate the culvert sections into a unitary overall culvert structure. Certain of the stringer elements are located a selected distance inwardly from the free bottom edges of the culvert sections and provide combination culvert reinforcing stringer elements and elongated footings and soil supports.
REFERENCES:
patent: 587392 (1897-08-01), Gray
patent: 832017 (1906-09-01), Hummel
patent: 905290 (1908-12-01), Cummings et al.
Calrow Paul E.
Kaiser Aluminum & Chemical Corporation
Rhoades John S.
Shapiro Jacob
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