Bulb Tees Gypsum Concrete Construction

New England Bulb Tees OSCO Construction Group. Gypsum concrete Wire Mesh Formboard Bulb or Truss Tee History Gypsum cast over formboards and structurally supported by bulb tees or truss tees was introduced as a roof deck substrate in the 1940s.

Braced Excavation Excavation Steel Sheet Concrete

Bulb tees spanning 6 feet.

. Fabricate from cold-formed steel wire. Grout end joints on single span system against steel framing. Bulb Tees are high strength lightweight steel sections used as structural sub-purlins in specialty roof decks such as Tectum Wood plank poured Gypsum decks and Span-Rock Gypsum plank decks.

Structural concrete decks can either be cast-in-place post-tensioned or precast tees double tees channel slabs flat slabs or hollow-core slabs. Gypsum roof deck on bulb tees that began over 70 years ago it was produced by several manufacturers such as united states gypsum co bestwall company and georgiapaciic corp next came lightweight insulating concrete lwic over galvanized form deck which fol lowed some years later and has now been. Ø KEYDECK--A galvanized wire mesh woven with 16-ga.

Ad Read Customer Reviews Find Best Sellers. Bulb Tees also make excellent bond beam for anchoring structural members providing a continuous strip for attachment and reinforcement. The new bulb-tee girder moved from initial concept to an accepted standard and has been used in actual designs in less than 2 years.

The mixture is then cast on formboards. England bulb-tee precast concrete girder. Decked bulb tee girders are a versatile long span girder that incorporates the benefits of both an I girder and a precast slab deck.

Various subpurlins were used in the system. In achiev ing this milestone the committee had to balance the constraints of the New England environment the practical concerns of the precasters and the an. Mix gypsum concrete thoroughly using a minimum amount of water to form a thick pourable consistency.

Poured gypsum concrete is typically used in conjunction with steel bulb tees formboards and galvanized reinforcing mesh Fig. Galvanize or factory coat sub-purlins with manufacturers standard primer. Open web truss-tees hot-rolled bulb-tees or folded sheet metal tees as required by design loads spans and fire ratings.

This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. Fill edge joints to slight excess with single pour at sub-purlins. The clear long spans along with life cycle costing.

Bulb Tees also make excellent bond beams for anchoring. What you see from the bottom appears to be like a drywall material. Gypsum concrete is placed at a minimum of 2 inches above the formboard either fiberglas formboard or sheetrock formboard.

The wire mesh is laid over top of the form board and subpurlins. The New England bulb Tee has been specifically designed and approved for use throughout New England. The concrete exposed on the exterior is a thermal bridge to the interior conditioned space which is a challenge to remedy if the building was renovated.

These girders are designed with a universal form configuration available in 5 sizes depending on the loads spans required and site conditions. Emulating cast-in-place construction for both load capability and vibration control Tindall set bulb tees in the beam pockets before grouting and overlaying. Ad Find Service Pros in Boston Fast.

Both provide the spanning characteristics required for the design. These girders are typically used for vehicle bridges and can range in length from as small as 40 up to 160. Compare Bids Save.

They also anchor deck against uplift forces restrict deck movement due to temp changes and provide lateral bracing for roof structure. Your Neighbors Use HomeAdvisor - Compare Their Reviews of Local Service Pros. NEBT Northeast Bulb Tee Post-Tensioned Design Guidelines 2278kb PDF File This report covers design detailing and construction specifications for post-tensioning and splicing of the New England Bulb Tee NEBT girder.

Every two feet or so you should see the bottom flange of the bulb tee running perpendicular to. Ad Need help with cement work. Free 2-Day Shipping wAmazon Prime.

Chicken wire is draped over the bulb of the bulb tee then the gypsum concrete is poured over the top. Provide 16 mm 58-inch minimum bearing for gypsum planks. 218 Bulb Tee sub-purlins are the only size currently manufactured and are available from The Poteet Group.

Gypsum roof deck on bulb tees that began over 70 years ago. It was produced by several manufacturers such as United States Gypsum Co Bestwall Company and Georgia-Paciic Corp. They include bulb tees and truss tees.

Local contractors are ready to help. Reinforcing mesh for gypsum concrete is one of the following types. Straight wires and 19-ga.

218 Bulb Tees High Strength Structural Subpurlins Bond Beams Bulb Tees are high strength lightweight steel sections for use as structural subpurlins in specialty roof decks such as Tectum Wood Fiber Decks Poured Gypsum Decks and Span-Rock Gypsum Plank Decks. Reinforcement and steel tees so a reduction in gypsum strength reduces the overall capacity of. They are fastened to primary framing and provide support for form boards that receive gypsum concrete.

Splicing of the girders allows for longer span lengths and the elimination of intermediate bridge piers. This type of deck is produced on the job site by combining gypsum with wood fibers or mineral aggregates and water. Next came lightweight insulating concrete LWIC over galvanized form deck which fol-lowed some years later and has now been around for 60 years.

FLOOR FRAMING With a large variety of structural steel floor-framing systems available designers frequently. Gypsum concrete construction -Bulb tees are used as structural sub purlin. Drainage slopes can be readily built into the roof deck by varying the thickness of gypsum.

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Gypsum Concrete Construction Bulb Tees Are Used As Structural Sub Purlin They Are Fastened To Primary Framing And Provide Roofing Roof Structure Roof Repair