A concrete block panel with mortarless joints in which the blocks are held together in vertical and horizontal compression by steel strapping and are reenforced by external coatings of glass fiber cement. The blocks may be insulated by urethane foam board sandwiched between the outer surface of the panel and external facing blocks. The blocks may also be used with mortar joints. The urethane foam board insulation assists in laying the blocks with either dry or mortar joints.

An insulated form assembly for a poured concrete wall includes a plurality of insulated forms. The wall is constructed from the insulated forms. The wall includes a cap fittingly retained on opposed edges of the forms and a band circumscribing the forms and the caps to pre-assemble the assembly. Each form assembly being made by connecting upper and lower ends of a plurality of interlocking form panels with the band circumscribing the resulting assembly to hold the form panels together. Ends of the circumscribing band being fashioned into a loop so as to form a handle.

A method and apparatus for the construction of a flooring system for use at a construction site such as an oil well drilling site. The flooring system is formed by interlocking a plurality of flooring units. Each of the flooring units includes a rectangular base section and a surface section attached to and overlaying the base section. One end of the rectangular base section is aligned with one end of the surface section which has at least one open-ended locking slot along its length. Located on the opposing end of the surface section is at least one locking tab formed from the surface section and projecting beyond and above the edge of the base section. The locking tab is aligned with the locking slot of the flooring unit. The method of constructing a flooring system utilizing such units includes positioning one unit, with the use of a lifting device such as a crane, adjacent to a second flooring unit and inserting the locking tab of the first unit into the adjacent second unit. By interlocking a plurality of such units, a flooring system is fabricated at a construction site which is strong enough to support heavy equipment, yet easily installed and removed.

A floor structure comprises a plurality of steel beams 4 arranged in parallel, each steel beam 4 including a web, an upper flange disposed at an upper end of the web, and a lower flange disposed at a lower end of the web, a floor surface being formed on the upper flange 2. The floor structure further includes displacement preventing spacers interposed between the upper flanges and/or lower flanges of the adjacent steel beams. Each displacement preventing spacer includes a load receiving part which is brought into engagement with the adjacent upper flanges and/or lower flanges to receive an active load incurred by the individual steel beams 4 so as to inhibit the steel beams 4 from displacing downward.

Concrete barriers are on a prestressing strand running through the barriers. The prestressing strand may serve to move the barriers together to compact a pliable joint material between the barriers. Following joint compaction, the barriers may be held in place by anchoring to a foundation.