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Headwalls

Crumpler Plastic Pipe, Inc. ...exposed to the exterior environment, prudent Risk Analysis management will note that plastic pipes, like Bituminous coated metal or concrete pipes must be protected with fire proof headwalls or other management practices that reduce the probability of fire, damage by mowers, snow plows, errant automobile traffic, etc. as noted by Hurd (Oct 87 public works) and others. See #1. York Bridge Concepts -- Commony Used Timber Bridge Terms ...the top of a guiderail that finishes, or "caps" the railing. Example. Headwall - The device placed at the end of a bridge that comprises a large portion of the abutment. Headwalls are used to retain the road formation soil around and above the abutments and prevent erosion at the abutment. Example. HS20-44 – A designation set forth by AASHTO. See #2. J.F. GILLESPIE, INC. - ABOUT US ...(New Jersey types "A", "B", "C", "D" and "E", as well as modified and custom sizes) Meter pits, interceptors and grease traps Headwalls, box culverts and concrete trenching Containment boxes Precast steps (4, 5, and 6 foot wide; one piece) We have supplied precast concrete structures to... See #3. Terre Hill Concrete precast bridge construction, frame arch box culvert, precast concrete wall Terre Hill Concrete Products is an approved manufacturer of Bridge Tek, LCC (Con Span) bridge structures. Box Culverts Frame Culverts Arch Culverts End Walls/Headwalls Architectural Accents from Terre Hill Concrete Products are a low cost, highly functional method of blending new and renovated bridge construction into... See #4. Applications - Culvert Outlets & Headwalls HEADWALLS Headwalls or wingwalls improve the flow of water into and out of conduits, provide anchoring support for the pipe and prevent dislodging under excessive pressures, control erosion and scour... See #5. 1: http://www.cpp-pipe.com [c1171184] 2: http://www.ybc.com [c1035213] 3: http://WWW.JFGILLESPIEINC.COM [c992267] 4: http://www.terrehill.com [c1181465] 5: http://www.gabions.net [p886680]