Pre Composite Floor Load Design Criteria

Analyze composite slab design criteria and calculations to show how a span can be increased and meet strength and deflection requirements without a significant increase to the weight of a slab reference industry standards and discuss how long span steel deck composite floor systems can achieve open.

Pre composite floor load design criteria. The dead load on a floor is determined by the materials used in the floor s construction. The uniform load moment coefficients assumed in the calcula tions are taken from the a c i. L 480 live load deflection criteria provides a high degree of resistance to floor vibration bounce. Meeting oem load specifications our load floor system composite panels reduce overall mass in the cargo system.

2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of. If there s wall board covered ceiling suspended from the underside of that floor the dead load increases to about 10 pounds per square foot. For better fit and finish our assembled load floors can be formed with.

The building designer desiring this benefit may choose to specify an l 480 live load deflection criteria to be used for the floor trusses. Design criteria for composite steel deck same as non composite allowable stress calculated theoretical deflection shall be based on the load of the concrete as determined by the design slab thickness and the load from the steel deck uniformly applied on all the spans and shall be limited to l 180 or inch whichever is smaller. 20 psf uniform load or 150 lb. The composite technology is re formulated into a high modulus urethane core combined with a layered skin design of fiberglass and high melt temperature adhesives.

Because the ct systems are going into a variety of different facilities and floor types i would like to specify a maximum floor load such that not only can the facility be prepared accordingly but more importantly to ensure interchangeability among a number of pre qualified ct systems i e. Steel beam camber in an effort to utilize the most economical beam section most design engineers camber the beams to offset the pre composite deflections. Concentrated load on one foot of deck width. If one goes down we can replace with a similar pre.

Load and the construction loads specified in the criteria namely. The success of a concrete slab on a steel frame is more likely to happen when there is coordination between the contractor owner and design team. Standard 318 71 part 4.