STAAD Foundation Advanced Help

National Annexure form (Isolated Footing)

Used to input concrete and rebar properties for the current isolated footing job.

Opens when Isolated Footing Job > Design Parameters > National Annexure is selected in the Main Navigator pane.

SettingDescription
AlphaCC

Specify the coefficient to account for the long term effects on the compressive strength of concrete and any unfavorable effects due to the method of application of external loads.

CRdc

Used to calculate the design shear resistance as per equation 6.2.a of the code. If not specified, a default value of 0.18/γc is used.

Vmin

Specify a minimum shear strength value if necessary, per section 6.2.2.1 of the code. If none is provided, then the shear resistance is calculated per the equations provided in EC2.

AlphaCT

Specify the coefficient to account for the long term effects on the tensile strength of concrete and any unfavorable effects due to the method of application of external loads.

fctk

The characteristic axial tensile strength of concrete used in calculating development length of reinforcing bars.

Min % of Steel

Specify a minimum steel ratio .