Slab deflection settings
Click Global Settings:
to edit the following slab deflection settings specific to the current model; click to edit them asNew Load Event Defaults
Setting | Description |
---|---|
Start time offset |
Allows you to define a default start time offset value for new event load start times. The value of a new event load start time is always the previous event start time + the default start time offset. |
Construction load |
Allows you to define a default value for new construction loads. Note:
The default construction load value depends on the regional code that you are using. |
New Check Defaults
Setting | Description |
---|---|
Deflection limit, L / |
When a new check is added to the Slab Deflection Check Catalogue it initially defaults to the deflection limit set here. |
Aging, Creep & Shrinkage
Setting | Description |
---|---|
Allowance for shrinkage effects in total deflection |
Allows you to define an amplification base factor for shrinkage. The value must be within the range from 0.1 to 0.9. |
Aging Coefficient |
Allows you to select between 2 creep/aging methods: User defined and Automatic. Note:
The Aging Coefficient option is only available for the US regional code. |
Modification factors
Different factors can be applied for each of the different materials in the model in order to adjust the following properties:
E |
Young's modulus |
G |
Shear modulus |
Itorsion |
Section inertia about local X |
Imajor |
Section inertia about local Y |
Iminor |
Section inertia about local Z |
Area |
Section area in compression or tension |
Aparallel to minor |
Section shear area in local Y |
Aparallel to major |
Section shear area in local Z |
t |
shell thickness (applicable to concrete only) |
The factors also vary according to the member types, (and in the case of concrete members whether they are cracked or not). For concrete members in particular, design codes can require that analysis stiffness adjustment factors are applied since the appropriate properties to use in analysis are load and time dependent.
Iterative Cracked Section Analysis
Setting | Description |
---|---|
Global Convergence Criteria |
Allows you to
modify the following options:
Tip:
To resolve
global convergence failures:
|
Local Convergence Criteria |
Allows you to
modify the following options:
Tip:
To resolve
local convergence failures:
|