Abstract: An irrigation recirculation and fire extinguishing system is provided that includes a water collection system, and a fluid conduit configured to receive water from the water collection system such that the water flows through the fluid conduit along a fluid flow path. A water distribution tank is configured to receive the water from the fluid conduit received from the water collection system, and a sprinkler head pump is configured to direct the water toward at least one sprinkler discharge nozzle. A dwelling pump is configured to direct the water toward at least one dwelling discharge nozzle that discharges water onto a dwelling.

Abstract: Disclosed are a hollow pipe-sandwiching metal plate and applications thereof. The hollow pipe-sandwiching metal plate comprises a first panel, a second panel, and multiple hollow pipes between the first panel and the second panel; gaps are arranged among the hollow pipes, and the hollow pipes are connected to the first panel and the second panel by brazing. The present disclosure further includes the applications of the hollow pipe-sandwiching metal plate. The hollow pipe-sandwiching metal plate has advantages, such as light weight, high strength, low stress, high temperature resistance, pressure bearing, thermal insulation and vibration isolation. The metal plate will not deform due to thermal difference, thereby providing permanent service life of the metal plate.

Abstract: The present disclosure relates to a unit-wall structure for a liquefied gas storage tank on land, which enables rapid and easy construction of a cylindrical wall of the storage tank by stacking a plurality of pre-produced unit-wall structures to overlap one another. The unit-wall structure includes iron rods arranged lengthwise and breadthwise therein, wherein the unit-wall structure has an arc shape so that a plurality of unit-wall structures are stacked to form a cylindrical wall of the storage tank.

Abstract: A void former or dowel sleeve adapted to be encapsulated in a hardened mass of concrete, which is collapsible upon the application of a tensile force longitudinally thereof to remove the void former from the concrete and provide a void for a load transferring dowel.

Abstract: An enclosure that is fire-resistive for a predetermined period of time including a floor having a structural forging which is covered with a glass wool felt. A platform of wooden plates is affixed to the glass wool felt. Lateral expansion joints are positioned at ends of the wooden plates. A wooden skirting board is positioned over the expansion joints and resides against walls of the enclosure. The walls are formed by plywood boards, incombustible boards, and a wooden board formed by planks. A metallic square bar is affixed to the floor and resides at the bottom of the walls. A ceiling is self-supported at the top of the walls.

Abstract: A former for supporting a layer of settable plastics material while it sets into hollow reinforcing ribs bonded to a laid up article of fibre reinforced plastics material during manufacture of said article, comprising a foraminous sheet (5) wherein the region of the sheet between each pair of neighbouring holes (6) is elevated above the plane in which the rims of the holes are disposed by means of one or more upstanding formations (7) joined to one another by a flexible web (10). The upstanding formations have rigidifying patterns (11) formed thereon. An article produced using the former is also disclosed.

Abstract: Ferrocement lining units are made by spraying aqueous cementitious compositions onto a wire mesh. Such lining units can be used for lining water courses, particularly underground sewers. Preferred cementitious compositions are based on cement powder, silica sand, water, optionally fly ash and possibly other minor additives. In making the lining units, steel wire mesh is supported in a mold and sprayed with the composition preferably by a particular form of gun (5) which is supplied with mortar and compressed air, as part of an overall apparatus that includes a pump (3) and an air compressor (6) which enable spray applications to be effected remotely from the mortar supply and preferably underground for the in-situ lining of sewers. The spray pattern of the gun is adjustable. Controlling the mortar supply and air pressure helps to reduce the problems associated with excessive spray formation and rebound of the applied mortar.

Abstract: A flexible form sheet is described, which is used for producing plaster cavity floors. The sheet has regularly distributed, leg-like bulges. The bulges are interconnected by horizontal sheet surfaces. Increased flexibility areas are located between the bulges, and are preferably deformed. They are appropriately constructed as zig-zag or concertina-like strips concentrically surrounding the bulges. This provides an increase in the vertical reciprocal mobility of the bulges, so that on applying the plaster, the form sheet can adapt to unevennesses of the underfloor.

Abstract: A cavity floor is formed by placing on a structural floor bottom a flexible floor mold which has leg forming portions arranged in an array with generally planar portions extending between and surrounding the leg forming portions. A flowable substance is applied over the mold, which subsequently hardens to form an upper floor having a plurality of legs defined by the leg forming portions, with a cavity region therebetween. The planar portions of the flexible floor mold permit adjacent leg forming portions each separately to contact the floor bottom under the weight of the applied flowable substance, even if the floor bottom is uneven.

Abstract: A method of constructing concrete shells of various design employing a plurality of inflatable water filled bladders which are aggregated to produce a mold having the configuration of the final structure. After a conventional concrete shell, which is formed by depositing concrete over the desired mold, has set, the bladders are drained, removed from the shell, and ready for reuse.

Abstract: An insulated bar or panel, usable in walls, ceilings-floors or roofs, including new or used cans of metal, glass or plastic, preferably having lengths less than twelve times their diameters, containing insulation (preferably inexpensive insulation such as loose earth, pumice or crushed lava, tanbark, small lumps of pine or other bark, slightly charred sawdust, bits of charcoal or coke, preferably preservative treated cottonseed or rice hulls or the like, cotton linters or bolls, tufts of cotton or rockwool, or vermiculite). The cans, which for example may be of paint-containing or coffee-containing type, are end-joined in a line. They are imbedded in a shape-holding matrix of plastic material (preferably porous, foamed plastic or porous concrete of portland, epoxy or other cement, mixed with lightweight aggregate, thus forming a strong, elongated bar or panel.