Abstract: Apparatus for providing double coverings or claddings has a stiff support piece shaped to fit in a bottom portion of a corrugation of a pre-existing roof covering. The support piece attaches to subjacent purlins through the pre-existing covering. The support piece has a generally U-shaped section including a base coopertively shaped for being seated in the corrugation with upper edges of the U-shaped section being folded back horizontally so as to provide two seats for engaging an upper purlin. The laterally disposed ends of the seats are raised at right angles to form abutments. An upper purlin is attached to the abutments of the support piece. The upper purlin is a reversed U-shaped metallic section having side wings. The wings have edges folded back horizontally and outwardly.

Abstract: A spacer device for use in supporting bar-like members in construction applications, the device including a body having a plate portion with a support post portion having a saddle configured on the upper edge thereof, with a plurality of legs affixed to the plate member and extending generally perpendicular thereto. The support post is provided with either an aperture for passing fastening wire therethrough for securing the bar or a pair of aligned openings for receiving a U-shaped clamp member. The plate portion is provided with recesses in alignment with the legs to permit stacking of one spacer atop the other for building layers of rebar framework. The legs may be removable for reverse connection, thus permitting the plate portion to be used as a "sand plate" support for reinforced concrete construction, or alternatively a separate "sand plate" may be used.

Abstract: The chairs include a lower chair portion for supporting multiple prestressing cables at the bottom of a plank and a narrow upper chair portion for supporting an upper prestressing cable located in the web between the hollow cores of the prestressed plank. The upper chair portion can be inserted into the strand receiving cups of the lower portion to form a structurally sound support for accurately placing the top and bottom reinforcing strands in the plank as it is cast.

Abstract: A support is provided for reinforcing rods or mesh. The support includes a plate of substantially planar construction. A cruciform structure is provided beneath and supporting the plate. The cruciform structure includes a plurality of legs and tips depending from the legs. The tips are adapted to expose a relatively minimal part of the support with the support being embedded in a substance such as concrete. On top of the plate is provided a structure to limit movement of the rod or mesh transversely of the plate. Specifically pairs of pins toed in towards one another are employed or fins are employed with ramps thereon to restrain the movement of rods or mesh which are supported on the plate.

Abstract: A support for use with an associated reinforcing rod, which is intended for reinforcement of concrete, which includes first and second generally planar members. The first member has a body portion, a first elongated leg and a second elongated leg. The first and second elongated legs extend from the body portion in mutually diverging relationship. The body portion has an edge opposite to a side from which the first and second legs extend which is substantially rectilinear. The second member has a body portion, a first elongated leg and a second elongated leg. The first and second elongated legs extend from the body portion in mutually diverging relationship. The body portion has an edge opposite to a side from which the first and second legs extend which has upstanding extremities to constrain movement of an associated reinforcement rod. The body portions define interengaging slots for fixing the first and second generally planar members in substantially normal relationship.

Abstract: A high chair spacer, for use in concrete construction and casting, for locating reinforcing rods and other elongated bodies to be placed in the concrete, such as cables, pipes or ducting, and a method for making such a spacer, which consists of a plastic base and a metal wire standoff spacer member and a plastic standoff member supported in the base. The metal member provides the strength necessary for receiving and supporting reinforcing rods but is protected from corrosion by the tough plastic base. The metal member is received in tubular-shaped recesses in the base. The high forces transmitted to the base by the metal member, and overturning lateral forces are resisted by the specifically designed base. The plastic standoff members straddles the metal member and is secured in cooperating slots in the base. Tabs may be provided on the base for positively attaching it to supporting formwork structure.

Abstract: A chair for supporting reinforcing bars having means for stacking one chair upon another to provide various sizes of chairs and for supporting a single layer of reinforcing bars or multiple layers of reinforcing bars, and having novel means for mounting the chair in soft bedding material such as sand, shell, gravel, mud or the like, which consists of a plate having upstanding studs to receive the tubular legs of the chairs.

Abstract: A device for positioning and firmly supporting a length of tubing or pipe parallel to but spaced from a foundation, wall or other surface is provided by a hollow cylindrical body (preferably of plastic) the top end of which is arcuately shaped to provided a bed for said tube and the bottom end of which is shaped so as to provide members or legs and flow channels suitable for admission of cement into the inner part of the cylindrical body. The supporting members carry regularly spaced circumferential scoring or notches as guides to permit either or both members to be cut perpendicularly to the main axis of the cylindrical body by a predetermined amount, and they carry lugs (preferably of a length equal to the length of the scoring) to permit the device to be nailed or bolted to a surface. The top optionally carries a strap for securing the tubing to the bed.