Abstract: A structural member for use in concrete forming structures and the like is disclosed. The member comprises a pair of spaced parallel tubular members interconnected by means of opposed webs. The combination defines an enclosure extending the length of the tubular members. Each of the webs attaches to a side of the tubular member opposite the enclosure. The outer surface of each web includes opposed flanges, which in combination with the web, define an open bolt slot that extends the length of the structural member. This structural member is particularly useful as an upright in concrete shoring.

Abstract: The present invention discloses a new concrete forming system and components therefor, particularly adapted for forming of vaulted ceilings and for use in buildings wherein the floors at the edges thereof have upwardly extending sills and/or wherein the ceilings have been dropped by a similar ledge or sill thereby significantly reducing the clear area through which a truss can be removed. The truss comprises a top chord and a bottom chord interconnected by upright members and diagonal bracing members. A number of adjustable extension legs are associated with the upright members and are telescopically received within an upright member such that a leg extending to the upper side of the truss can overlap with a leg extending to the lower side of the truss, whereby the legs extending above the truss can be adjusted and maintained independent of the legs extending below the truss.