RAM Structural System Help

Code Checks

The Code Check dialog is where the design criteria specific to the selected design code are specified. The contents of this dialog will vary based on which code is chosen. The settings established here are applied to the entire model. Editing these settings will clear the design results for the model.

SettingDescription
ACI 318 Design Code
  • Clear Bar Cover: The distance from the outer edge of the horizontal reinforcement to the face of the wall.
  • Bar Spacing: The maximum and minimum limits used for the reinforcement spacing checks. The user can select to use the bar spacing limits specified by the selected design code, or can override the code by selecting custom values.
  • Code Options: The concrete shear capacity of walls may be calculated according to 11.10.6, or the more basic method of 11.10.5. Sections 11.10.9.3 and 11.10.9.5, pertaining to maximum bar spacing, may give unrealistically small spacing limits when the length of the wall segment considered is relatively short. The user may specify a minimum length value to be considered in the equations within each code section, which will override the true wall segment length in cases where it is greater.
  • Structural Wall Category: Wall category as defined in Chapter 21 of ACI 318 to be considered when performing design checks.
  • IBC Parameters: The deflection amplification factor, Cd, and importance factor, I, are specified here. These values are used in calculating the limiting neutral axis depth, c, for the requirement of special boundary reinforcement per Section 21.7.6.2. The user can choose to consider the IBC 2006 amendments to ACI 318 contained in Section 1908.
  • Resistance Factor for Shear: The user can choose to consider a shear resistance factor of either 0.75 or 0.60.
  • Wall Boundaries: Where vertical reinforcing is required to be confined by ties, the bar size used for all ties is specified here.
BS8110-97 and CP65 Design Codes
  • Concrete Cover: Value to be used in setting out bars in cross-sections.
  • Design Lifetime: This determines the limiting value of cover and concrete grade for the required design life.
  • Exposure Class: This determines the limiting value of cover and concrete grade for the required level of exposure.
  • Fire Resistance: This determines the limiting value of cover, wall thickness for the required fire resistance.
AS3600 Design Code
  • Concrete Cover: Value to be used in setting out bars in cross-sections.
  • Exposure Class: The exposure class, together with the degree of crack control required have an affect of the minimum allowable horizontal reinforcement in the wall. The appropriate limit is taken from section 11.6.2 of the code.
  • Crack Control: This defines the degree of crack control desired as defined in section 11.6.2 of the code. A selection of "none" indicates to the program that the wall is not restrained horizontally and no crack control checks are desired.
  • Fire Resistance: This determines the limiting value of cover, wall thickness for the required fire resistance according to sections 5.7.2 and 5.7.4 of the code.