History Of Gypsum Roof Deck

These include office complexes schools public buildings shopping malls and warehouses located throughout the united states.

History of gypsum roof deck.

In the 1950 s new construction methods came in the way of new types of roof decking and dead level roof systems. Keydeck woven wire mesh is commonly used in repair of poured gypsum roof decks. Using the roof deck as a structural diaphragm was a california development and worked its way across the nation in the late 1950 s and early 60 s. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets.

Of poured roof deck in oak ridge tennessee was for the manhattan project. Galvanized wire mesh removing deteriorated gypsum deck 4. Keydeck mesh is made up of 2 hexagonal mesh composed of woven 19 gauge galvanized wires with an additional 16 gauge galvanized longitudinal wire placed at every 3 interval of its width. 3 4 the presence of a gypsum roof deck will be indicated by a white powdery residue during saw operations.

Upon this observation members shall make immediate notification to the incident commander and proceed to evacuate the roof. 1943 ambitious decisions lead to a historic project with savvy salesmanship from johnson the company is awarded the largest gypsum roof deck job in the company s history. Only gravity load and wind uplift loads were considered. Therefore many poured gypsum roof decks were not designed and installed with diaphragm shear strength in mind.

Bulb tees are high strength lightweight steel sections. Conclusion 4 1 when operating on thin flimsy roofs members should always be aware of the. Cutting section from deck. This was a cost effective way of construction back then and today.

Bags of gypsum concrete 3. Deteriorated gypsum deck deck repair sequence 2. 1946 a new name. It was not until 2 years later in 1945 that we knew the 2 500 000 sq.

Metal roof decking and gypsum roof decks were more prevalent and required a roof insulation overlay.