How are open web steel joists?

Modern-day open web steel joists are similar to those produced in the 1920s and 1930s, and all feature top and bottom chords, with diagonal, and sometimes vertical, web members between the chords. Today’s steel joists are often fabricated using double angle chords and webs made from angles or round rods.

What are the major series of open web steel joists?

Load tables and specifications are published by the SJI in five categories: K-Series, LH-Series, DLH-Series, CJ-Series, and Joist Girders.

What are the different types of floor joists?

Several popular options include solid lumber, LVL, wood I-beams, steel joists and open web floor trusses. Let’s examine three of these materials.

What is a LH joist?

LH-Series Joists are for longer span conditions and are capable of supporting larger loads. These joists allow for special profiles to accommodate a variety of conditions. Some of the typical special profiles include gable joists and arched joists.

What is the maximum span for AK series open web steel joist?

60′
K Series joists range in depth from 10” to 30” and can span up to 60′.

What are three benefits of open web steel joists?

AND BENEFITS. OF STEEL JOISTS.

What is the difference between girder and joist?

The main differences between joists, beams, and girders are size, design, and functionality. Joists are usually small but numerous and mostly supported by beams. Girders are the largest of the three and provide the primary horizontal support to beams.

What is an Open Joist?

Open Joist 2000 is the product name for a type of floor-truss system being used in today’s building construction. According to the manufacturer, Open Joist Inc. of Trois-Rivieres, Quebec, Open Joist 2000 “is a trimmable all-wood open-webbed finger-jointed floor truss without metal plate connectors.

What are the four types of joists that comprise a floor?

Solid lumber joists, I-beam joists, open web floor joists, pretty much any floor system joist you care to name will have a list of pros and cons.

What is AK joist?

K Series bar joists are designed for use typically with lighter loads and are most common in roof design. K Joists are used typically where shorter span conditions are required. It is the purchasers responsibility to ensure that joists and bridging purchased will be selected, erected and installed properly.

What is the difference between a joist and a truss?

The joist supports the load which the floor is built to bear. A truss is used to support the roof.

What is rolled steel joist used for?

Rolled steel joists with web and flange splices have been in use for a long time both in building frames and in bridges. Other examples are: Bearings (steel or elastomeric pads) Prefabricated parapets (like the Jersey barrier)

What is the purpose of an open web steel joist?

Open web steel joist. The main function of an OWSJ is to provide direct support for roof or floor deck and to transfer the load imposed on the deck to the structural frame i.e. beam and column . In order to accurately design an OWSJ, engineers consider the joist span between bearing points, joist spacing, slope, live loads, dead loads,…

How is a concrete slab connected to a steel joist?

Shear connection between the concrete slab and steel joist is typically made by the welding of shear studs through the steel deck to the underlying CJ-Series Composite Steel Joist. Joist Girders are open web steel trusses used as primary framing members.

What kind of steel is a joist girder made of?

Joist Girders. Joist Girders are open web steel trusses used as primary framing members. They are designed as simple spans supporting equally spaced concentrated loads for a floor or roof system.

What kind of steel is used for roof joists?

Longspan (LH) and Deep Longspan (DLH) Steel Joists are relatively light weight shop-manufactured steel trusses used in the direct support of floor or roof slabs or decks between walls, beams, and main structural members.