초록 ▼

A method and apparatus for post-tensioning a concrete slab. A tendon member is pre-formed to define an enclosed area yet fit within a form. The tendon member has ends which extend past the form. Concrete is poured around the tendon with the tendon being positioned within the periphery of the concret

A method and apparatus for post-tensioning a concrete slab. A tendon member is pre-formed to define an enclosed area yet fit within a form. The tendon member has ends which extend past the form. Concrete is poured around the tendon with the tendon being positioned within the periphery of the concrete structure to form a large central area bounded by the tendon and an exterior portion which surrounds the enclosed area of the tendon. The tendon is anchored within said concrete by anchors secured to the ends of the said tendon and placed under an original tension of around 28,000 p.s.i.

대표청구항 ▼

A post-tensioned concrete slab assembly comprising a concrete slab, a tendon member, and a pair of anchor means, said tendon member being pre-formed in a loop to define an enclosed area within said slab, said tendon member having ends adjacent one another which extend outside said slab, the tendon m

A post-tensioned concrete slab assembly comprising a concrete slab, a tendon member, and a pair of anchor means, said tendon member being pre-formed in a loop to define an enclosed area within said slab, said tendon member having ends adjacent one another which extend outside said slab, the tendon member being positioned within the periphery of said slab to form said enclosed area bounded by the tendon member and an exterior slab portion surrounding the enclosed area of the tendon member, said anchor means being secured to the ends of said tendon member so that said tendon member is placed under an original tension of around 28,000 p.s.i.