Bentley 2006 User Manual
American Steel Design
Section 2
2-22
The following parameters have been introduced to support the
composite member design, specified using the explicit definition
method.
composite member design, specified using the explicit definition
method.
Table 2.2 – Composite Beam Design Parameters for AISC-ASD
Parameter
Name
Name
Default
value
Description
CMP
0
Composite action with connectors
0 = design as a non-composite beam
1 = design as a composite beam if the slab
0 = design as a non-composite beam
1 = design as a composite beam if the slab
is in bending compression throughout
the span, design as a non-composite
beam if the slab is in tension anywhere
along the span
the span, design as a non-composite
beam if the slab is in tension anywhere
along the span
2 = design as a composite beam only.
Ignore moments which cause tension
in the slab.
in the slab.
DIA
0.625 in
Diameter of shear connectors
HGT
2.5 in
Height of shear connectors after welding
DR1
0.4
Ratio of moment due to dead load applied
before concrete hardens to the total
moment
before concrete hardens to the total
moment
WID
0.25 times the member
length
Effective Width of concrete slab
FPC
3.0 ksi
Compressive strength of concrete at 28
days
days
PLT
0.0
Thickness of cover plate welded to bottom
flange of composite beam
flange of composite beam
PLW
0.0
Width of cover plate welded to bottom
flange of composite beam
flange of composite beam
RBH
0.0
Height of rib of form steel deck
RBW
2.5 in
Width of rib of form steel deck
SHR
0
Temporary shoring during construction
0 = without shoring
1 = with shoring
0 = without shoring
1 = with shoring
THK
4.0 in
Thickness of concrete slab or the thickness
of concrete slab above the form
steel deck.
steel deck.