Analysis Element properties
When an analysis element is selected, its properties are displayed in the Properties window.
- 'General' properties apply to the whole beam.
- 'All spans' properties are used to rapidly define the same properties for all beam spans.
- Individual 'Span' properties are used to over-ride 'All spans' properties.
General properties
Property | Description |
---|---|
Name | The automatically generated name. |
User Name | Can be used to override the automatically generated name if required. |
Plane | Indicates the level or frame within which the member is placed. |
Characteristic | Analysis Element |
Active | Clearing this option makes the Analysis Element inactive
in the analysis. See: Inactive members |
Element type |
Note: Tension
only elements, Compression only elements, and non-linear
axil/torsional springs are all non-linear elements and
therefore require non-linear analysis. If linear
analysis is performed they will be treated as linear
elements.
|
Material type |
|
Rotation |
Rotation of the member about its local x axis. |
Span properties
Property | Description |
---|---|
Section | The section size |
Grade |
Timber grade |
Compression only, Tension only |
Specify if the brace is compression only, or tension
only. Note: Tension only and Compression only members are non-linear
elements and therefore require non-linear analysis. If
linear analysis is performed they will be treated as linear
elements |
Relaxation factor [Only displayed if the brace is tension only] |
Default 0.0. Any value entered is not used unless you also check the ‘Use relaxation factors for tension only elements’ box in Analysis Options. Note: It
is highly unlikely that you would ever need to set a
specific release factor for an individual
brace.
See 1st order non-linear settings in: Analysis settings |
Linearity | Straight |
Releases | |
Fixity end 1, end 2 |
Pinned |
Torsional load release end 1, end 2 |
Check one end only to define a torsional release. |
Vertical load release end 1, end 2 |
A vertical load release can be applied to the end of a V or A type brace pair so that they don’t prop other members against gravity loads, (you are prevented from releasing single braces, or other brace pairs in this way). |
Wind loading | |
Apply open structure wind load |
Select this option if you want open structure wind loads to be calculated. |
Shape factor, Cf | The default shape factor varies according to the entity
type and is taken from Model Settings > Loading >
Wind Loading Default Cf factors are taken from the document ‘Wind Loads For Petrochemical And Other Industrial Facilities’ published by ASCE. |
Effective area XY | |
Formula | The default effective area formula varies according to the entity type and is taken from Model Settings > Loading > Wind Loading |
Factor | The factor used in the above formula can be edited if required. |
Effective area XZ | |
Formula | The default effective area formula varies according to the entity type and is taken from Model Settings > Loading > Wind Loading |
Factor | The factor used in the above formula can be edited if required. |
Live (Imposed) Load Reduction | |
KLL [Only displayed for Regional Code ACI/AISC] |
Specify the KLL factor in accordance with Table 4-2 in ASCE 7-05/ASCE 7-10. |
Reduce imposed loads by [Displayed for Codes other than ACI/AISC] |
This property is particularly applicable to the design of transfer beams. Although the percentage of imposed load reduction is not determined automatically for beams, this property allows you to specify the percentage manually. It can be
applied to all, or individual spans.
The reduced results are used in concrete beam design. |
Fire proofing | |
Protected | When members are set as 'Protected', self-weight of the
members is increased by the weight of fireproofing. See: Fire proofing |
Exposure | Exposed on all sides |
UDA | |
Name Finish Class Phase Note File |
A customizable list of the attributes that can be applied to individual members and panels. |