Limiting Minimum Section Size

 

 

 

Select the member type to apply the minimum section size requirements.

 

 

 

From the Main Menu select Design > Concrete Design Parameter > Limiting Minimum Section Size.

 

From the Menu tab of the Tree Menu select Design > Concrete Design Parameter > Limiting Minimum Section Size.

 

 

 

 

0-Check.jpg Design Code

 

Display the selected design code.

 

 

0-Check.jpg Consider Minimum Section Size

 

This option is applicable with the following design codes: Eurocode2:04 Italy National Annex, Eurocode8:04 Italy National Annex, NTC2008, IS 456:2000, and IS13920:1993. Select this option to apply the minimum section size requirements provided in the design codes. All boxes are checked as the default setting. If this option is not selected, the program will not consider the minimum section size requirements and a warning message will be displayed in the Message Window.

 

Beam: Select to apply the minimum section size requirements in beam members.

Column: Select to apply the minimum section size requirements in column members.

Brace: Select to apply the minimum section size requirements in brace members.

Wall: Select to apply the minimum section size requirements in wall elements.

Slab: Select to apply the minimum section size requirements in slab elements.

Mat Foundation: Select to apply the minimum section size requirements in mat foundation elements.

 

 

Note 1. Applied minimum rebar requirements

 

(1) Eurocode2-1-1:04

- Beam: 120mm

- Column: 120mm

- Wall: 100mm

- Slab ; 200mm for SLS design crack control

- Mat ; 200mm

 

(2) Eurocode8-1:04, NTC 2008

- Beam: bw≤min{bc+hw, 2bc} for DCM and DCH

 200mm for DCH

- Column: 250mm

- Wall:max(150mm, 1/20 x height)

 

(3) IS456:2000, IS13920:1993

- Beam: w/d ≥ 0.3, min{bc, hc} ≥ 200mm,  d ≤ 1/4 x lcr

- Column: min{bc, hc} ≥ 200mm, dc/db ≥ 0.4

If the column height is larger than 5m or unbraced length is larger than 4m, section dimension should be larger than 300mm.

- Wall: t ≥ 150mm

 

Note 2.

Regardless of the minimum selection size option, member size must always be larger than concrete cover (dt + db) defined in Concrete Criteria for Rebar.