slabs are 4.5-inch normal-weight reinforced concrete on 0.6-inch form deck total slab depth of 4.5 inches. . typically slabs are supported by open web steel joists which are supported by composite steel girders. composite steel beams replace the joists at the spandrel locations to help control cladding deflections.
versa-dek composite 3.5ls is an optimized deck profile combining the features of stay-in-place formwork and positive steel reinforcement for composite floor slabs. the 3-1/2 dovetail shape interlocks with concrete topping to achieve optimum span and load-carrying capacities.
composite slab with steel decking. 12.1 the design procedure. the design procedure for composite beams follows ihe requirements of: a ec2. en for the design of concrete structures, b ec3 en for the design of steel structures, and c ec4 en 1994-1 -1 for the design of composite steel and concrete structures.
composite steel floor deck. composite steel floor deck is cold formed steel deck which acts as a permanent form and as the positive bending reinforcement for the structural concrete. when suitably fastened, the steel deck also acts as a working platform for the various trades. after the concrete hardens, the steel deck and the concrete are
ws = concrete deck slab weight , lb/in note: the equations shown here assumes a constant section for the entire girder length x = the distance from the support to the analysis section, inches. after the deck has sufficiently cured to design strength, the live loads can be applied to the composite deck girder structural unit.
'steel deck and floor deck' catalog - by vulcraft corporation, 2001; aci 318-99 building code and commentary - by american concrete institute, june 1999; 2. in the 'composite deck' worksheet, since the composite deck is interlocked or engaged with the concrete, the deck is assumed to function as the positive moment, bottom face slab reinforcing.
standard composite deck . standard composite deck has embossments in the vertical ribs that bond with the concrete slab to develop a composite floor system. once the concrete cures, the resulting composite floor system provides superior strength and stiffness.
long-span composite steel deck slabs blend the speed and versatility of steel construction with the performance and durability of concrete, enabling a holistic approach to space-efficient structural designs. they are engineered to reduce story height while maximizing ceiling height and address market-specific building requirements.
design of composite elements and systems. design of composite beams in the uk was traditionally carried out to bs . composite slabs with profiled steel sheeting were designed to bs 5950-4 and the profiled decking used for those slabs to bs 5950-6.there was no british standards guidance for composite columns.design of composite beams and composite slabs for buildings is now covered by
the steel girder design criteria are obtained from figures 3-1 through 3-3 shown below , from the concrete deck design example, and from the referenced articles and tables in the aashto lrfd bridge design specifications through 2002 interims . for this steel girder design example, a plate girder will be designed for an hl-93 live load.
a full-depth precast deck employs a series of precast concrete panels that are full-depth in thicknessas required by structural designwith the length and width determined by specific bridge geometry.
moment regions of the slab. shear transfer needed for composite action between the deck and concrete is established by a combination of chemical or material bonding at the interface, friction and mechanical influence of shear transfer devices. the shear transfer devices typically consist of embossments rolled into the deck profile,