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STAAD Commands and Input Instructions
Section 5
5-100
B
f
is the flange width
D the overall depth of the steel section
T is the thickness of the fireproofing material beyond the outer
edges of the cross section as shown in the next figure.
T
f
is the thickness of the flange for the I shape and Tee
T
a
is the thickness of the leg of the angle
T
w
is the thickness of the web for the I shape and Tee
A
steel
= Area of the steel section
CFP - CONTOUR FIREPROOFING
T
T
Figure 5.15
The number of input items required to apply this attribute is four –
a) the type of fireproofing b) the thickness T shown in the above
figures c) the density of the fireproofing material d) the members
on which it is to be applied.
For each such member, A
fp
is calculated and multiplied by the
density of the fireproofing material to obtain the weight per unit
length of the member. This is added to the weight per unit length
of the steel section itself and the total is used in calculating
selfweight. Hence, SELFWEIGHT must be one of the load
components of load cases if the weight of the fireproofing material
should be considered as part of those load cases.