• Meshed Shear Wall

• Mid-pier Shear Wall

• Cleared - the specified reinforcement will be checked during the design process.

• Checked - reinforcement will be designed during the design process.

See: Concrete member autodesign

This option controls the starting point for auto-design procedures and is therefore only displayed if Automatic design is ‘on’. It applies to both longitudinal bars and links.

• Minima (default) - removes the current arrangement and begins with the minimum allowed bar size.

• Current - the auto design commences from the current bar arrangement.

See: Concrete member autodesign

Rotation

(mid-pier only)

• 0° - wall spans horizontally

• 90° - wall spans vertically

• Cleared - a support will only be created if the Generate support property is checked.

• Checked - a support will only be created if no members/slabs capable of providing support exist under the wall.

• Cleared - no support is created under the wall.

• Checked - a support is created under the wall.

KLL

(Head Code ACI/AISC)

Specify the KLL factor in accordance with Table 4-2 in ASCE 7-05/ASCE 7-10.

See: Overview of live or imposed load reductions

Alignment of the wall:

• Front
• Back
• Middle
• User

Assuming concrete sections are cracked has a direct affect on the analysis; smaller Modification Factors are applied to cracked sections causing an increase in deflection. Indirectly the design can also be affected because the sway/drift sensitivity calculations are also influenced by this assumption.

The amount the wall is extended or trimmed back from end 1.

• A positive extension extends the wall length beyond its insertion point.

• A negative extension trims the wall back from the insertion point.

See: Specify extensions and releases

The amount the wall is extended or trimmed back from end 2.

• A positive extension extends the wall length beyond its insertion point.

• A negative extension trims the wall back from the insertion point.

See: Specify extensions and releases

Number of layers of reinforcement to be used in the wall:

• 1

• 2

• Fixed

• Pinned

• Continuous (incoming members pinned)

• Fixed

• Pinned

• Continuous (incoming members pinned)

Assuming concrete sections are cracked has a direct affect on the analysis; smaller Modification Factors are applied to cracked sections causing an increase in deflection. Indirectly the design can also be affected because the sway/drift sensitivity calculations are also influenced by this assumption.

See: Cracked, partially cracked, and uncracked concrete members

Permanent load ratio option

Relative humidity (RH)

Age of loading

You are required to supply a value for the permanent load ratio parameter. A default of 0.65 has been assumed, but you are advised to consider if this is appropriate and adjust as necessary.

Age of loading is the age at which loading is applied.

See: Design parameters (Eurocode only)

Columns are divided into stacks and walls are divided into panels at floor levels where members or slabs connect to the column/wall. For the purposes of Sway/Drift, Wind Drift and Seismic Drift checks only you can override the default stack/panel divisions by merging a stack/panel with a lower stack/panel. The length of the combined stack/panel is then used in the checks.

By default all stacks of all walls are taken into account in the calculation to determine the sway sensitivity of the building. The results of this calculation being accessed from the Review toolbar.

This parameter provides a facility to exclude particular wall panels from these calculations to avoid spurious results associated with very small panel lengths. You can either clear the checkbox located under ‘All Panels’ to exclude the entire wall, or you can exclude a particular panel by clearing the checkbox located under that panel only.

Wind drift ratio

Wind drift is automatically checked against the specified limiting ratio, (which can be set differently for different columns). The results of this calculation are accessed from the Review toolbar.

If you don’t want this check to be performed you can either clear the checkbox located under ‘All Panels’ to exclude the entire wall, or you can exclude a particular stack by clearing the checkbox located under that panel only.

• Checked - confinement reinforcement is designed separately in three regions.

• Cleared - the same confinement reinforcement is designed for the whole stack.

Major

(Minor)

• Braced

• Bracing

Effective length factor direction Major

(Minor)

• Calculated

• User input value

For the unrestrained length calculation:

• if a slab exists at a panel end, it can be ignored by unchecking the relevant box.

• If no slab exists at that end, the setting is redundant - in which case the program considers the setting at the remote end of the next panel instead.

See: Stiffness

If this is the case, select the checkbox, and then specify the SFRS direction and type.

Shear demand/shear capacity ratio in Dir 1

Shear demand/shear capacity ratio in Dir 2

(ASCE 7 code only)

When working to the ASCE 7, the engineer can directly define the shear demand / capacity ratio (beta) in each direction. The default value of 1.0 could be over-conservative.

The setting is applicable to all years of the ASCE 7 code and has the following default and limits: Default = 1; Min = 0.001; Max = 10.

• When an Autodesign is performed, the design will be incremented to achieve a utilization ratio less than the ratio limit.

• When an Autodesign is performed, the design will be incremented to achieve a utilization ratio less than 1.0.

See: Apply user defined utilization ratios

• When a Check is performed, the check will pass provided the utilization ratio is less than the ratio limit.

• When a Check is performed, the check will pass provided the utilization ratio is less than 1.0.

(Fx/Fy/Fz, Mx/My/Mz)

Used to specify the translational and rotational degrees of freedom in which the support acts:

• Fixed - indicates the support is fixed in the specified direction.

• Free - indicates the support is free to move, or has a stiffness applied in the specified direction.

Used to specify the translational stiffness applied in a direction that is not fixed:

• Release

• Spring Linear

• Spring Non-linear

Used to specify the rotational stiffness applied in a direction that is not fixed:

• Release

• Spring Linear

• Spring Non-linear

• Cleared - the wall is designed without end zones of reinforcement

• Checked - the wall is designed with end zones of reinforcement

In a multi-stack wall properties can be entered for a specific panel, over-riding those defined at the All panels level.

Top level

(Interediate levels)

Base level

(Head Code Eurocode, BS or IS)

If checked, the floor will be treated as supported when calculating the live/imposed load reductions.

Used to indicate at which levels the wall is restrained.

Available mesh types:

• Quad only
• Tri only
• Quad dominant

See: How meshed walls are represented in solver models

Name

Finish

Class

Phase

Note

File

A customizable list of the attributes that can be applied to individual members and panels.

See: Create and manage user-defined attributes