D3.D.2 Design Parameters

The program contains a number of parameters which are needed to perform and control the design to BS8007.

These parameters not only act as a method to input required data for code calculations but give the Engineer control over the actual design process. Default values of commonly used values for conventional design practice have been chosen as the basis. Table 2D.1 contains a complete list of available parameters with their default values.

Note: Once a parameter is specified, its value stays at that specified number until it is specified again. This is the way STAAD.Pro works for all codes.

Table 1. BS8007 Design Parameters
Parameter Name	Default Value	Description
FC	30 N/mm²	Concrete grade, in current units of length and force.
CLEAR	20 mm	Distance from the outer surface to the edge of the bar, in current units of length. This is considered the same on both surfaces.
SRA	0.0	Orthogonal reinforcement layout without considering torsional moment Mxy - slabs on -500.orthogonal reinforcement layout with Mxy used to calculate Wood & Armer moments for design. A* Skew angle considered in Wood & Armer equations. A* is any angle in degrees.
SCON	1	Parameter which indicates the type of slab ee. ground or suspended as defined in BS8007 1 = Suspended Slab 2 = Ground Slab
TEMP	30^°C	Temperature range to be considered in thermal crack width calculations
CRACK *	0.2 mm	Limiting thermal crack width, in current units of length.

* Provided in current unit systems