Abstract: A floating roadway assembly adapted to support road vehicles is formed from a plurality of pontoons consisting of concrete material and connected together by a plurality of elongated metal carrying rods which extend longitudinally through each of the pontoons to join them together to form the roadway. The rods are resistant to traction and pressure and the connection between the rods and each of the pontoons is made so as to enable relative movement therebetween longitudinally of the rods.

Abstract: A reinforcing member, especially suitable for anchoring to the earth or to a rock, is made up of two or more separate rods which are shaped to fit together to provide a unit with a generally round cross-section and with spiral ribs on the outer surfaces of the unit. Each of the separate rods which make up the member or unit, have two flat surfaces which are radial with respect to the circular unit and which interfit in surface to surface contact with corresponding surfaces of the complementary rods, except that recesses are provided at the interior ends of the radial surfaces which together form a central conduit in the assembled unit. The central conduit may be employed, per se, as an injection conduit for mortar to fix the end of the rod in an anchoring rock for example, or it may act as venting means to assure that air is not retained in hole boring in which the unit is to be secured by mortar or cement. A tubular pipe may be included in the hollow center to facilitate injection or venting.

Abstract: There is disclosed a process for the production of a bridge girder system of prestressed concrete in sectional cantilever construction in which prefabricated sections comprising the whole superstructure cross-section formed as hollow boxes, are drawn tightly together in the longitudinal direction of the bridge to form a monolithically acting girder system, the process comprising the steps of arranging a plurality of bridge sections in succession in the longitudinal direction of the bridge, assembling said sections to form a set, said set of sections having been simultaneously prefabricated while separating the surfaces which are to be turned toward one another (in the subsequent incorporation of the individual sections in the bridge structure) by steel sheets, and then moving the sections into position individually so that they are held solely by means of the frictional connection produced by the prestressing between their contacting surfaces.

Abstract: The tool or device of the invention operates on an anchoring rod of the type which has spiral threads which threads only extend around a portion of the circumference thereof. Such an anchoring rod, when used to secure ceilings in mines, for example, has to be screwed into anchoring position and then have a nut screwed in the free end thereof to secure it against a steel plate applied against the wall of the ceiling. The device of the invention is in the form of a sleeve having an aperture at one end adapted to receive the nut to be applied and a means at the other end to connect to a torque applying device. Back of the nut receiving aperture, means are provided in the sleeve device which can, optionally, cause the rod, the end of which extends through the nut, to rotate with the sleeve, or to remain stationary while the nut is screwed thereon, whereby the insertion of the rods into the bore holes and the tightening of the nut thereon, can be accomplished rapidly with only one fitting of the tool thereon.

Abstract: Apparatus for supporting, transporting and rotating mold forms for producing concrete reinforced ties wherein a gantry includes a pair of rotatable clamping devices on opposite ends thereof whereby the mold forms may be held in a position to be filled with concrete, moved to a mold dismantling position while being rotated through an angle of 180.degree. with the concrete ties being subsequently removed from the mold forms. The rotatable clamping devices include vise means for supporting the mold forms and clamping means for holding the mold forms in their assembled condition during rotation thereof through 180.degree. while permitting dismantling of the molds after they are brought into their inverted position. The gantry device is movable over a production and dismantling area and means are provided for stacking the finished concrete ties.

Abstract: A float for the intermediate storage at sea of crude oil, liquefied gas and the like, is formed of a toroidal body of revolution having a vertical axis. The toroidal body consists of a bottom plate in a form of a shallow annular shaped dish closed across its top by a circular cover plate. Partitions divide the interior of the body into individual compartments. Extensions projecting radially outwardly from the circumferential pheriphery of the body form docking surfaces and can house driving engines for propelling or positioning the float.

Abstract: A monolithic ship's body is formed of a hull containing bulkhead partitions disposed in a hexagonal arrangement to form a grid symmetrical about the longitudinal axis of the hull. The partitions are formed integrally with the hull. The junction between the side walls and the bottom of the hull is curved. Further, the bottom of the hull also has a curved configuration transversely of the longitudinal axis providing alternating convex and concave surfaces so that the bottom acts a hollow arch. The deck is formed integrally with the hull and the bulkhead partitions and is curved transversely to the longitudinal axis with its upper surface being convex. Steel concrete or prestressed concrete can be used in forming the monolithic ship's body.

Abstract: Anchoring rods which have one end thereof secured in a bore hole of the earth or rock by surrounding cement are sometimes made more secure in the earth by one or more devices which surround different parts of the buried portion of the rod and have means for supplying additional cement at high pressure thereto to crack a portion of the surrounding cement and press additional cement into the earth adjacent the area of the device thereby forming a bulge in the anchoring cement. This disclosure relates to a device of this type which, however, has an elongated body of elastic material with a longitudinal slit or opening adapted to surround the anchoring rod and be retained thereon at the desired site and which body contains an opening or channel spaced from the rod-surrounding opening or slot substantially parallel to the latter which defines a distribution channel and has an orifice therein which is ordinarily covered by the body of the device.

Abstract: The disclosure relates to an anchoring device adapted to hold one end of a to-be-stressed linear member within the bore hole of an earth formation. The anchor device has a tubular body surrounding and retaining a section of the linear member and has a compression channel extending along the circumferential portion of the body. The compression channel being open to the outside of the tubular body through a substantial part of its intermediate length to form a distribution channel. Means are provided for feeding hardenable material under pressure to the regions outside the device to compress the earth surrounding the bore hole. The body is covered with a sleeve of elastic material encompassing the body to normally cover the open part of the distribution channel.

Abstract: The tank ship is made of monolithic reinforced concrete and is formed with two symmetrical, longitudinal chambers for tanks, and an intermediate space for the operating mechanisms thereof. The massive reinforced concrete slabs which form the ship are reinforced partly by prestressed steel tendons and partly by mild (non-stressed) steel rods. The prestressed tendons running lengthwise of the ship are unspliced. The transverse bulkheads forming the ends of the tanks are curved in two directions, e.g. in the form of sections of hemispheres. Insulation is provided on the interior surface of the tank chambers and on both sides of the bulkheads.

Abstract: A cable-stayed girder bridge having a concrete deck girder which includes longitudinally extending stiffening girders having cables embedded therein and a laterally extending deck portion is constructed by sequential formation of said deck girder in successive adjacent sections. The longitudinally extending stiffening girder portions of said deck girder are first formed, support cables are embedded therein and subsequently tensioned. After hardening of the stiffening girders, the laterally extending deck portion of the duck girder is formed. A form carrier movable along the bridge during its construction extends in a cantilevered arrangement from a previously formed deck girder section to provide support for a successive deck girder section during formation thereof.

Abstract: In a device for simultaneously stressing a group of tension elements in a prestressed concrete member, a common driving source is used for mechanically rotating each of the spindles and wrench sleeves which are connectible to the tension elements. Separate safety clutches are selectively engageable with each of the spindles and wrench sleeves so that individual connection of each spindle to a tension element can be provided and, as the element is stressed in tension, individual adjustment can be provided by the wrench sleeve for each anchor nut on its associated tension element.