Abstract: A system of placing and supporting elongated control joint strips, headers and the like preparatory to the pouring of a concrete slab, using elongated strips having V-shaped longitudinal bends, and spaced socket members defining non-circular sockets, in combination with stakes on non-circular cross section having two different effective transverse dimensions. The preferred stakes are of oval or elliptical cross section, with longitudinally spaced ring-like ribs on the shorter sides, and the preferred socket members are either integral U-shaped straps lanced from the strips, or separately formed brackets fitted onto the strips and having means defining non-circular sockets alongside the strips.

Abstract: A method of sealing joints e.g. between concrete sections in road, bridge and parking deck structures against passage of water, dirt, etc., is described wherein recesses are formed in the concrete surface on each side of the joint and a specifically designed flexible elastic joint-spanning strip having openings therethrough is placed therein. A layer of rigid-setting grout is then placed over the strip, the openings in the strip when filled with grout serving to support the upper layer of grout and to prevent flexing and cracking thereof by vehicle traffic passing thereover, as well as to anchor the strip to the concrete bodies.

Abstract: Waterstop for use in jump or slip casting of concrete comprising two strips of T-shaped transverse cross-section which can be fastened together by means of bars and bolts after the first strip has been embedded at the edge of a concrete mass. After fastening the second strip to the first, the second mass of concrete is poured to embed said second strip.

Abstract: A surface waterstop is in the form of a strip of rubber or plastics material. At least one keying formation, preferably a T-shaped formation, is provided on each side of a center line of the strip. A longitudinally-extending central section may be provided for receiving and locating stop-end shuttering. Along at least one lateral edge, and preferably along both lateral edges, the strip is adapted, for example by the provision of holes, slots or the like, to receive fixing pins or clips which, in use, extend at an acute angle to the surface on which the waterstop is laid.

Abstract: The present expansion gap sealing device has a plurality of strips and elastomeric bodies between adjacent strips which extend longitudinally through the gap. The strips are supported by legs extending downwardly into the gap. Upper ends of the legs are connected to the strips. Lower ends of the strips are interconnected with each other in pairs whereby adjacent legs form a pair and an elastically yielding structure. The lower leg ends may be interconnected by bars and the entire supporting structure may be guided by movably supported guide means in the gap.

Abstract: A sectional joint for making surfaces from a cast material such as concrete, and a slab made therefrom. These consist of a strip or web with two faces, each face being formed with projecting portions and depressed portions which respectively extend into the cast material or are filled by the cast material.

Abstract: A divider strip with an upstanding screed for use in connection with the pouring of a pair of adjoining concrete slabs, such strip being designed to be supported by a horizontal series of laterally and substantially equidistantly spaced stakes which are set below a predetermined grade level, and, in addition, being adapted when in its operative position to have wet concrete poured on opposite sides thereof in order to form a pair of adjoining slabs with at least one key joint therebetween.

Abstract: An expansion joint comprising a joint member having opposing horizontal fixing bodies, such composed of a horizontal cushion course and a vertical cushion source made of elastic material on or under a steel flat horizontal base course, which are connected together by an expansion plate of elastic material that is formed in wave shape and comprises a flexible, flat part and an apex part, and stepped holes composed of a nut hole and an anchor bolt hole concentric with said nut hole made in said horizontal base course at regular intervals, and a method of installing such expansion joints by using an anchor bolt setter.

Abstract: An expansion joint cover for sealing off a space between first and second structural bodies is provided, and includes, first and second side members, and bridging and elastomeric sealing means, the latter means comprising, bridging plate means resting slidably upon an inner ledge wall portion of the first side member and further resting against the second side member so as to form a bottom wall of a cavity bordered by the first and second side members. The bridging plate means is covered by bond-inhibitor means in the cavity and is provided with anchor means projecting into the cavity. An elastomeric sealing member embedding the anchor means and substantially filling the cavity is characterized by being formed and cured in the cavity and thereby being bonded to the first and second side members and inhibited against bonding to the bridging plate means by the bond-inhibitor means.

Abstract: An expansion-contraction joint for coupling a pair of relatively movable members separated transversely one from the other. The joint accommodates limited relative displacements of such members of a type that may be induced by thermal changes therein, seismic disturbances, shifting of certain underlying soils owing to changes in the moisture content thereof, etc. A typical environmental use for the joint is between adjacent concrete pads such as those forming the plaza about a multiple-story building, and those forming the floor surfaces of relatively long or sprawling buildings. The joint includes a plurality of elongated, longitudinally extending runners that are transversely spaced and have resilient pads interposed therebetween to which they are bonded to form a self-sustaining sandwich-type integer therewith and includes a sealant layer interposed therebetween on top of the transversely spaced resilient pads.

Abstract: A wear liner for protecting a load surface from impact and wear loads is disclosed. The wear liner includes an elongated body of elastomeric material with a reinforcing and mounting plate embedded therein. A channel is formed in the mounting side of the liner member to receive a mounting bar secured to the load surface. Spaced fasteners secure the reinforcing plate directly to the mounting bar and in turn secure the liner member in its mounted position. The reinforcing plate is provided with interlocking sections on both sides of the channel to firmly secure the elastomeric material to the reinforcing plate. Removable plugs formed of elastomeric material are installed in the openings for the mounting fasteners. The reinforcing plate is spaced from the load surface by a distance in excess of one-half of the thickness of the liner member and extends across the width of the liner member a distance greater than one-half of the width thereof.

Abstract: An elongated expansion joint of the kind used between adjacent slabs in a road or building construction comprises, a pair of elongated anchor elements or rigid polymeric material adapted to be secured to the respective slab edges, and a laterally compressible web of more flexible material securable between the two anchor elements. At least one of the anchor elements may be secured to the web by means of a bead which snaps into a channel. The web may be of folded configuration with a rupturable membrane to hold the web to a predetermined spacing. The invention also comprises a method of forming an expansion joint between a pair of surfaces using a structure as specified.