I section and tapered web

DWW

Depth of section at start node

TWW

Thickness of web

DWW1

Depth of section at end node (see note #1)

BFF

Width of top flange

TFF

Thickness of top flange

BFF1

Width of bottom flange

TFF1

Thickness of bottom flange

AYF

Shear area for shear parallel to Y-axis (see note #2)

AZF

Shear area for shear parallel to Z-axis (see note #2)

XIF

Torsional constant ( IX or J) (see note #2)

The following option parameters are used to include a composite concrete slab. If included, these must be on a separate line following a dash, -, on the line containing the required section parameters.

CFR

Width of the composite slab to the right of the web center line

CFL

Width of the composite slab to the left of the web center line

CFT

Thickness of the composite slab

MR

Modular ratio of the concrete in the composite slab

Notes

1. DWW should never be less than DWW1. Therefore, you must provide the member incidences accordingly.
2. You are allowed the following options for the values AYF, AZF, and XIF:
   • If positive values are provided, they are used directly by the program.
   • If zero is provided, the program calculates the properties using the following formulae:

     AYF = D × TWW

     AZF = 0.66 ((BFF × TFF) + (BFF1 × TFF1))

     XIF = 1/3 ((BFF × TFF3) + (DEE × TWW3) + (BFF1 × TFF13))

     where

     D	=	Depth at section under consideration
     DEE	=	Depth of web of section

   • If negative values are provided, they are applied as factors on the corresponding value(s) calculated by the program using the above formula. The factor applied is always the absolute of the value provided. For example, if you specify a value of XIF as -1.3, then the program will multiply the value of XIF, calculated by the above formula, by a factor of 1.3.