초록 ▼

A construction system for constructing multistory buildings is disclosed. Concrete joists are poured in place, using high-strength concrete. The concrete is poured into a removable, reusable ganged-form structure. The sides of the joist forms swing away from the joists after the concrete is set. Mon

A construction system for constructing multistory buildings is disclosed. Concrete joists are poured in place, using high-strength concrete. The concrete is poured into a removable, reusable ganged-form structure. The sides of the joist forms swing away from the joists after the concrete is set. Monolithic slab soffits, comprising an underlayer of gypsum board and an overlayer of concrete are pre-cast and moved into place to connect the joists before pouring of the joist concrete. The combination of pre-cast soffits and poured-in-place joists permits rapid and inexpensive construction of the multiple floors of a building. Alternatively, the slab soffit may be poured in place, in the same pour as for the joists, by placing fire-resistant boards between adjacent joist forms, thereby eliminating the need for cleaning any form work in those areas.

대표청구항 ▼

A method of constructing a structural slab of a building, comprising the steps of: a. placing a forming module in juxtaposition to a plurality of vertically extending columns, said module containing at least a plurality of joist-forming members to be placed as a unit, at least some of said joist-for

A method of constructing a structural slab of a building, comprising the steps of: a. placing a forming module in juxtaposition to a plurality of vertically extending columns, said module containing at least a plurality of joist-forming members to be placed as a unit, at least some of said joist-forming members containing cut-away portions shaped to conform to ductwork members extending downwardly from the tops of said joist-forming members; b. laying ductwork members in the cut-away portions of said joist-forming members, so as to seal said portions against subsequent leakage of concrete from said joist-forming members when step (d) is performed; c. placing sheets of fire-resistant board between and upon adjacent pairs of joist-forming members; and d. pouring concrete into said joist-forming members and over said sheets, to form a complete, monolithic structural slab section. A method of making a section of a structural slab of a building floor, comprising the steps of: a. implacing forming members for the casting of a pair of side sections of a slab soffit in spaced relationship to each other at a site removed from said building; b. placing a sheet of fireproofing material between and upon said side-section forming members, said sheet extending partially over the top of each of said side-section forming members; c. pouring concrete on said sheet and into said side-section forming members, to form a monolithic slab soffit having downwardly projecting side portions spaced apart a given distance; d. removing said slab soffit from said side-section forming members; e. placing a forming module in juxtaposition to a plurality of vertically extending columns of said building, said module containing at least a plurality of joist-forming members to be placed as a unit, the space between a pair of adjacent joist-forming members being substantially equal to said given distance; f. placing at least one monolithic slab soffit made according to steps (a)-(d) between and upon an adjacent pair of said joist-forming members, the sides of said soffit extending downward partially into the respective joist-forming members; and g. pouring concrete into said joist-forming members, up to the tops of said slab soffit, to form a complete, monolithic structural slab section.