Abstract: A method for making a steel/concrete tank is provided. A steel interior tank is pressurized during or after pouring of a concrete outer tank around a steel inner tank. Pressurization is commenced before the concrete has set, and is maintained until substantial setting of the concrete. The resulting structure is less susceptible than previous structures to cracking of the exterior concrete upon pressure-testing of the structure for leaks.

Abstract: A tool for scribing lines in soft concrete in which the line can be impressed by a standing operator. Guides are provided on the tool to assure a proper angle of the scribed line. A grooving tool can then follow the scribed line without added guide because the line will be located and all rough aggregate in the concrete will have been moved out of the path of the grooving tool.

Abstract: On a track for electromagnetically levitated vehicles, side guide rails are positioned on and secured to a beam-like support member forming the track by an apparatus made up of a transportation frame extending in the long direction of the support member and by installation truss frames located on and extending transversely of the transportation frame. Side guide rail installation arms are pivotally mounted on the installation truss frames. With the arms in an outward position the guide rails can be placed on and held by the arms. By pivoting the arms inwardly the side guide rails can be located along the outer sides of the support member. By raising the installation truss frame, the guide rails can be located relative to stators mounted on the underside of the support member. In addition, the final position of the guide rails can be established by moving the installation truss frames transversely of the transportation frame and relative to a plate strip on the upper surface of the support members.

Abstract: A tool which can be used to temporarily close cleanout holes in masonry construction and which can be securely anchored directly to the masonry wall.The present invention is essentially comprised of a substantially flat plate of rigid material. The plate of the present invention is configured such that it fully covers the cleanout holes for which it is designed. Furthermore, the planar surface of the plate is configured such that it provides an acceptable grout surface on the interior of the cleanout hole once it is filled. Securely attached to the plate is means for locking the plate into position within the cleanout hole and for securing the plate directly to the masonry wall in which the device is used. Various different locking mechanisms are within the scope of the invention.

Abstract: A curb inlet having a removable non-concrete gutter form, which is an arcuate, generally rectangular strip having a concave front face and a convex rear face with a plurality of handles secured to the rear face and, also secured to that rear face, a plurality of aligning horizontal sleeves each having a tube portion and a latch portion and each having a locking bolt slidably mounted in the sleeves. The form can be locked in place in a pre-cast curb inlet member by the bolts entering openings in that pre-cast member. The form retains concrete when the concrete is poured against the pre-cast member. After the concrete sets, the bolts are withdrawn from the openings and the form can be removed through an access opening therein. The form strip may be a fiberglass-plastic resin structure.

Abstract: Metal supports (1), are provided to rest on the ground and to removably support metal forms (2). These supports are provided with screw (4) and nut (9) means used for accurately adjusting in elevation the forms. Removable struts (16) are used to fix the gap or spacing between parallel forms and tension wires (17) going through the forms are used to secure the forms during the casting of the concrete. Means are provided to stretch and secure (20, 21) these wires with respect to the forms.This apparatus allows to make a slab of which the upper face is perfectly horizontal and at the level desired, with a minimum of time devoted to the setting in place and removing of the apparatus.

Abstract: Disclosed herein is a method and apparatus for forming borders and the like around garden areas, the apparatus comprising cardboard sheets having scribed thereon three bending folds, each bending fold extending longitudinally along the surface of the cardboard sheet. More specifically a center fold bisects longitudinally elongate rectangular cardboard pieces, the center fold having formed laterally adjacent thereto two side folds. In use the cardboard piece is bent to form a V-section with the side folds being bent over to form vertical surfaces on either edge of the "V". These surfaces are then joined by various fastening devices and the cardboard structure is inserted into the ground and filled with cement or precast concrete blocks.

Abstract: Means for repairing or forming structural bodies of self-hardening fluid cement mortar, in a subaqueous or other situs, utilizing a body-forming cavity including body-shaping walls of porous fabric in combination with openwork matrix means fixedly positioned at the situs. The matrix means is received within the body-shaping walls of porous fabric and connected thereto by tension-restraining tie-elements of predetermined length for controlling limited oppositely outward distension of the opposing walls away from the matrix as determined by the length of the tie-elements, upon reception of fluid mortar or like cementitious material within the body-shaping walls to expand the walls thereof to such given shape and size of the body formed by the cementitious material.

Abstract: Means for repairing or forming structural bodies of self-hardening fluid cement mortar, in a subaqueous or other situs, utilizing a body-forming cavity including body-shaping walls of porous fabric in combination with openwork matrix means. Fluid mortar or like cementitious material is pumped into the cavity to fill the same and expand the fabric walls against tensional restraint of the fixedly maintained matrix means. Pressure of fluid material may be continued against restraint of the matrix means until small proportions of the fluid material ooze through the porous fabric, which indicates attainment of a lower water-cement ratio in the formed body, after which the fluid material is allowed to set and harden to such given formed shape.

Abstract: A plurality of formwork elements are provided, each of which is curved according to an arc of a circle and which are assembled to form an inner formwork wall and an outer formwork wall. Each of said formwork elements have two vertical edges provided with angled portions which form engaging faces, which engage engaging faces of horizontally adjacent formwork elements of the same formwork wall. Said angled portions of said formwork elements of said outer formwork wall extend outwardly. Said angled portions of said formwork elements of said inner formwork wall extend inwardly.