Device for building concrete roofs and method
View Patent ↗An apparatus used in roof construction wherein insulation material is held flush within the channels formed by the apparatus. The flush engagement between the insulation material and the walls defining the channels of the apparatus leads to a greater surface area securing the insulating material in place. The apparatus includes attachment means on its top flanges to mount rebar members to the apparatus holding the rebar grid in place. The vertically disposed flanges of the apparatus include openings that allow concrete to pass through the apparatus preventing fatigue points caused by the interruption of concrete. The apparatus can be employed in a method that allows a roof to be transported to a job site with the rebar grid already secured to an apparatus.
1. An apparatus used in concrete roof construction, comprising:
A) two C-channel beams each having an elongated bottom wall and an elongated coextensive top wall kept at a parallel and spaced apart relationship with respect to each other and each beam further including a side wall perpendicularly mounted to their respective bottom and top walls, said side walls being abuttingly disposed with respect to each other and defining a channel for each beam, whereby each of said channels have cooperative dimensions to partially house the edges of an insulating board, substantially flush with the bottom flange;
B) a rebar attachment assembly having two elongated attachment walls continuous through the entire length of the beam and mounted substantially perpendicular to said top walls and kept at a substantially parallel and spaced apart relationship with respect to each other further including each an inwardly disposed attachment flange extending along the entire length of said beam and substantially perpendicularly from said attachments walls, said inwardly disposed attachment flanges being uninterrupted and extending towards each other a predetermined distance to define a longitudinally extending cavity between said attachment flanges, attachments walls and top walls for receiving a predetermined amount of concrete or cement, and said attachment flanges having a width and include a plurality of through holes at predetermined distances from each other, said through holes are centrally located with respect to said width of said attachment flanges so that part of the attachment flanges longitudinally extend along both sides of said through holes; and
C) a plurality of rebar members defining a rebar grid mounted to said rebar attachment assembly with a corresponding plurality of tie wraps cooperatively mounted to said attachment flanges through said through holes to secure said rebar members in place, said cavity extending along the entire length of the beam to receive said cement or concrete to further secure said rebar members to said rebar attachment assembly with a slab of concrete or cement poured over said insulating boards and over the top of said attachment flanges, thereby securing the rebar members in the cavity.
2. An apparatus used in concrete roof construction, comprising:
A) two C-channel beams each having an elongated bottom wall and an elongated coextensive top wall kept at a parallel and spaced apart relationship with respect to each other an each beam further including a side wall perpendicularly mounted to their respective bottom and top walls, said side walls being abuttingly disposed with respect to each other and defining a channel for each beam, whereby each of said channels have cooperative dimensions to partially house the edges of an insulating board, substantially flush with the bottom flange;
B) a rebar attachment assembly having two elongated attachment wall continuous through the entire length of the beam and mounted substantially perpendicular to said top walls and kept at a substantially parallel and spaced apart relationship with respect to each other further including each an inwardly disposed attachment flange extending along the entire length of said beam and substantially perpendicularly from said attachments walls, said inwardly disposed attachment flanges being uninterrupted and extending towards each other a predetermined distance to define a longitudinally extending cavity between said attachment flanges, attachments walls and top walls for receiving a predetermined amount of concrete or cement, and said attachment walls include a plurality of through holes at predetermined distances from each other; and
C) a plurality of rebar members defining a rebar grid mounted to said rebar attachment assembly and a plurality of said rebar members passing through said through holes.