Steel Joists

 Open web steel joist (OWSJ) is a lightweight steel truss consisting, in the standard form, of parallel chords and a triangulated web system, proportioned to span between bearing points.

The main use of an OWSJ is to provide support for roof or floor deck and to transfer the load imposed on the deck to the structural frames (beam and column). Using a steel joist and steel deck system for floor and roof construction has proven to be an effective solution resulting in substantial savings.

Over the years, we have established strict quality standards. All our welders, inspectors, and quality assurance technicians are certified. DASH PROJECTS can design and manufacture steel trusses for a wide variety of special needs and specifications.

DASH PROJECTS uses state-of-the-art software for the design of our products, and can accommodate many special design requirements including:

• Point loads, Moving loads
• Snow drifts, End moments, Axial loads and Slopes

Quality

DASH PROJECTS is committed to providing a high quality product that exceeds project requirements. All our raw material is certified to exacting standards, our welders are certified, and all of our work is rigorously inspected before it leaves the plant.

As a leader in the joist industry DASH PROJECTS has hundreds of thousands of steel joists in service - supporting the floor and roofs of schools, factories, warehouses, stores and countless other structures throughout the country.

The shape of the joist may depend on its use and the type of roofing system requested.

• Standard Shape
• Non-Standard Shapes
• Special Shapes

Accessories

To provide lateral support during construction, or for other special needs, DASH PROJECTS provides a full range of joist accessories including:

• Horizontal bridging
• Diagonal bridging (welded or bolted)
• Knee Braces
• Joist Substitutes
• Headers
• Extensions

Extensions

An extension designates a continuances beyond the normal bearing of the joists. The extension can be the top chord only or the full depth of the joist, in which case, it is referred to as a cantilever joist.

 Using DASH PROJECTS joist and deck system for flooring and roof construction

           has proven itself to be a most advantageous solution.

• Efficiencies of high-strength steel
• Speed and ease of erection
• Low self-weight of roof and floor for smaller columns and foundations
• Increased bay dimensions, reducing the numbers of joists and columns
• Simplifying building erection
• Greater floor plan layout flexibility
• Maximum ceiling height by installing of ducts through the joist web systems
• Easy adaptation to acoustical insulation systems
• Floor and roof composition having long-term resistance to fire (As established by underwriters laboratories)

Steel Decks

 Steel deck is a cold formed corrugated steel sheet supported by steel joists or beams. It is used to support concrete or insulating membrane of a roof.

DASH PROJECTS decks are based on load tables of the 1996 edition of the American Iron and Steel Institute specifications for the design of cold-formed steel structural members.

DASH PROJECTS deck is available with G90 (Z275), G60 (Z180), or A25 (ZF75) zinc protection as described by the ASTM A653 standard. A gray polyester paint finish without underlying zinc protection is also readily available. Upon request, DASH PROJECTS can also provide white finish paint with an underlying zinc protection of G90, or other types of material, given sufficient notice.

The P-2432, P-3623, P-3606, and P-3615 deck profiles are available with embossments to act in composite action with a concrete slab.

• Steel Deck, Composite
• Acoustical Deck
• Edge sheet, Cover plate, Angle closures and Metal closure

The difference is in the range of services we provide. For project design, bid preparation or component manufacturing, our sales representatives, engineers, technicians and draftsmen are at your service. Our team can suggest efficient and economical solutions.

HAMBRO D500 Composite Floor System

Combining Hambro steel joists with poured concrete, the system consists of hybrid concrete/steel T-beams running in one direction and an integrated continuous slab in the other (see drawing below).

The bottom chord (fy 50,000 psi min.) acts as a tension member in the concreting stage and during the service life of the floor. The web system tying top and bottom chords together consist of bent rods (fy 44,000 psi min.) and resists vertical shear in a conventional truss manner. The patented 13 gauge top chord (fy 50,000 psi min.) acts as a compression member during the non-composite stage. In the composite stage, the top chord is embedded in the concrete and functions as a continuous shear connector. The concrete slab is reinforced with welded wire mesh.

The top chord functions as a high chair, developing negative moment capacity in the concrete slab which behaves as a continuous one-way reinforced slab.

 The D500 composite floor joist system is an advanced

up-to-date answer to elevated floor construction challenges.

Quality

DASH PROJECTS is committed to providing a high quality product that exceeds both the Steel Joist Institute and project requirements. All our raw material is certified to exacting standards, our welders are certified, and all of our work is rigorously inspected before it leaves the plant. As a leader in the steel joist industry, DASH PROJECTS has hundreds of thousands of steel joists in service - supporting the floor and roofs of schools, factories, warehouses, stores and countless other structures in various countries.