Abstract: A box culvert formed from a plurality of corrugated sections. Reinforcing ribs are secured to the outside surface of the culvert. A universal receiving channel is provided for each lower edge of the culvert and may be used to secure lower edge portions extending at different angles relative to horizontal. A rib configuration is disclosed which results in manufacturing and material savings.

Abstract: The invention provides a drainage channel preferably formed from a sheet material, such as stainless steel. The channel has a flat bottom and upwardly extending sidewalls that form an acute angle with the bottom. A pair of shoulders extend outwardly from upper portions of the sidewalls for receiving a grate. Upper edge walls extend upwardly from outer portions of each shoulder. The exterior width of the channel at its bottom is less than the interior width or the channel between the upper edge walls, but greater than the interior channel width between the upper ends of the sidewalls. Consequently, the drainage channel can be mechanically anchored in concrete without requiring use of additional anchoring elements, and is also stackable.

Abstract: Soil/metal supporting structures commonly include panel sections having a short radius of curvature in the range of 750 mm to 2,500 mm. In such soil metal supporting structures the panels are of heavy gauge in the range of 2 mm to 10 mm thickness. Usually, expensive tooling and forming techniques are required to cold form the heavy gauge material into a curved shaped having such short radius. Such expensive techniques have been eliminated by this invention by virtue of the improvements comprising:a) the panels have a high degree of ductility before being cold formed, such high degree of ductility being determined by a ratio of specified minimum yield strength to specified minimum tensile strength equal to or less than 0.

Abstract: A reinforced metal box culvert is provided which has the standard crown, opposing sides and opposite curved haunches. The culvert is characterized in having continuous corrugated metal sheet reinforcement secured to at least the crown of the culvert and extends the length of the culvert which is effective in supporting the load. The corrugated reinforcement has a profile which abuts the crown corrugations with the troughs of the reinforcement being secured to the crests of the corrugated crown. The corrugated reinforcement sheet has a curvature complementary to the corrugated crown to facilitate securement. The continuous reinforcement, as secured to the culvert in an uninterrupted manner, provides an optimum load carrying capacity for selected extent of reinforcement provided by the reinforcement metal sheets.

Abstract: A natural bottom culvert and installation method that preserves the in-stream environment for fish to spawn, forage and migrate, while being able to withstand high-water levels. The culvert has an arch-shaped member that is placed over the stream in connection with elongate footings placed on terraces prepared on each stream bank. The footings have a plurality of apertures spaced along their elongate dimensions. Anchor posts are driven into the terraces through the apertures and affixed to the footings. Fill material is placed over this assembly and a road is constructed over the fill material.

Abstract: An elongate safety conduit or trench for receiving chemical liquids, having first and second preassembled conduit elements, the first located and retained within the second. A space is between the two at the bottom for collecting liquid that may leak through the first. A seal along the length of the conduit between the two elements inhibits entry of liquid between the two.

Abstract: A buried conduit consisting, in transverse cross-section, of a lower component (2) and a covering upper component (1) which bears on the upper part of the side walls (22) of the lower component (2) by means of lengthwise bearing members (3). According to the invention, the upper component (1) forms an arched vault made so as to have sufficient flexibility to distort slightly under the effect of the forces to which it is subjected, and the lower component (2) is made so as to resist, without distortion, the forces transmitted by the ground and by the upper component (1), both components being fixed to each other along the lengthwise bearing members (3) and the latter consisting of socket joints, so as to permit the bearing parts of the distortable upper component to pivot without sliding relative to the undistortable lower component.

Abstract: A precast concrete culvert system includes a series of open bottom culvert sections each having parallel spaced vertical side walls integrally connected to an arcuate top wall having a curved inner surface with a radius of curvature at least twice the rise defined between the top center of the curved inner surface and the bottom surfaces of the side walls. The side walls rest on footers and have outer surfaces which form sharp corners with the top surface of the top wall and have a vertical height at least sixty percent and preferably between eighty and ninety percent of the rise. The vertical height is also less than fifty percent of the radius of curvature which is between twenty and fifty feet and preferably either about twenty-five or forty feet. The end sections have vertical head walls, and the vertical side walls are adapted to connect with angularly disposed vertical concrete wing walls to provide for a smooth hydraulic flow into and through the series of the culvert sections.

Abstract: A tunnel or pipe section which includes a plurality of panels which are connected together to form a closed tunnel or pipe section. Each panel includes a plurality of tubular connectors which are anchored within the panel, preferably to the reinforcing members of the concrete panels, and which are connected to one another, such as by bolting through apertures in walls of the aligned connectors.

Abstract: A prefabricated support and covering structure for making artificial tunnels, small bridges, and the like, is comprised of a plurality of modular bodies each of which consists of a plurality of prefabricated reinforced concrete panels interconnected by reinforcing rods so that upon lifting of the center portion of each modular body the prefabricated panels will fold about hinges defined by the reinforcing rods. The reinforcing rods are disposed at angles relative to each other and intersect along a line parallel to the axis of the structure, which line defines the hinge axis. Each prefabricated panel of reinforced concrete has abutting edges and the gap between the confronting faces of the panels is filled with binding material. The modular bodies are each provided with lateral flanges to define a space between the lateral spaces of adjacent bodies which is also filled with a binding material to unite the modular bodies to each other.

Abstract: A method for producing cylindrical hollow bodies bearing on the ground along one generatrice, of large cross sectional area, by assembling on site previously prepared longitudinal components.The method consists in determining by calculation the optimum cross-sectional profile of said hollow body as a function of known parameters concerning the site, conditions of use of said hollow body and its inherent characteristics; divising said optimum cross-sectional profile into adjacent sections each corresponding to a longitudinal component of the hollow body and together providing a substantially continuous interior surface; and giving the transverse wall section of at least some of said components a variable thickness for adapting the latter component to the stresses to be exerted thereon.

Abstract: A low headroom culvert is provided wherein a series of shallow arch-shaped flat metallic sections are overlappingly secured together. Torsion and buckle resistant reinforcing cross ribbing elements are affixed to the exterior culvert sections at selected points along the culvert to form girder-like beams. The improved culvert structure provides reduced hydraulic flow resistance, can be easily installed and requires less metal for its manufacture in comparison to culverts made of corrugated sheet.

Abstract: An archway construction positioned over a pathway for supporting a crossroad or the like. The archway has three primary sections including an upper ceiling section which spans the pathway and which is supported on two vertical support sections positioned on opposite sides of the pathway. The three primary sections are each comprised of alternating layers of compacted soil fill and steel reinforcing mats, with the mats serving to stabilize the fill. The ceiling section preferably includes at least three reinforcing mats including a lower flat mat and a pair of curved upper mats, with the three mats being separated by layers of fill except in a central region midway between the vertical support sections where the three mats are connected together. The two upper curved mats of the ceiling section provide vertical support for the center of the lower flat mat.

Abstract: A corrugated metal open top pipe drain for the collection and removal of surface water from paved areas, such as highways, parking lots, airports and the like.

Abstract: A low-profile culvert structure comprising in combination, a plurality of arch-shaped corrugated structural metallic sheets secured to each other in such a manner as to form an elongated shell having typically a low rise to span ratio, and a plurality of transverse reinforcing ribs, each in the form of a corrugated metallic sheet. The transverse reinforcing ribs are secured to said shell at intervals along the length thereof, preferably to both the interior and exterior of the elongated shell.

Abstract: The present invention relates to a flexible joint to be inserted between culvert sections. In a culvert joint which consists of anchor members attached to the opposing culvert sections, a flexible member extending between said anchor members and a large number of strengthening members arranged in parallel at the internal and external positions of said flexible member, said strengthening members being classified into one with projections and one with holes to regulate the distance between them; the projections of said member with projections fit into the holes of said member with holes to overlap each other, thereby regulating the distance between them to follow an expansion and contraction or an uneven subsidence of the culvert and therefore, bearing earth pressure sufficiently.

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.