GSA Specialist Design Modules

GSA

GSA Suite contains all specialist modules.

(GSA Building)

Design of steel members to:

Output options

Contouring of utilization ratios
Tabular output of utilization ratios and verbose and brief calculations
Colour highlighting of errors and warnings in calculations
Automatic calculation of effective buckling lengths based on specified member restraints

Steel member design features include:

Results are available in various forms, including numeric utilization ratios and calculations as rich text.
The different forms of result available mean that the user can avoid information overload, but can still audit the calculations at a very basic level when appropriate.
Utilization ratios can be plotted (contoured) on the model just like any other numeric result, so enabling rapid understanding of which parts of a structure are overstressed or are over designed.
Calculation results are marked up in colour to draw attention to problems and important results within the calculations. They are available in both brief and verbose formats.
Restraints can be specified in detail so that the program can evaluate the effective buckling lengths of complex multi-span beams. Alternatively, the user can specify the effective lengths (as is common in other steelwork design packages). Assistance is available to set up restraints, which are necessarily more complex than restraints used in analysis models.

(GSA Building)

Design of reinforced concrete slabs and walls to:

Australian: AS 3600-2001
Eurocode: EN 1992-1-1:2004 Eurocode 2 - General, Germany, France, Italy, Netherlands, & United Kingdom
Hong Kong: Hong Kong Code of Practice 1987, 2004, & 2004(AMD1)
UK: BS 8110-1:1985, 1997, & 1997 (Revised 2005); BS 5400
US: ACI 318 & 318M - 02 & 05, and ACI 318-08

Output options

(GSA Building and GSA Raft)

GSA Building combines GSA structural model with a Vdisp non-linear soil model to calculate the soil structure interaction.

Iterative analysis using the GSS and Vdisp solvers (does not require the installation of Vdisp)
Specify soil properties and locations
Specify soil-structure geometry

(GSA Bridge and GSA Building)

GSA calculates the transient and resonant response of all nodes in a structure following a modal analysis.

Output

Resonant analysis
- Maximum resonant response factor
- Peak acceleration
- Resonant critical nodes
- Resonant critical frequency
Transient analysis
- Maximum transient response factor
- Peak velocity
- RMS velocity
- RMQ velocity
- Transient critical node
- Transient critical frequency
Overall Maximum and minimum response factors

Chart views

Resonant analysis
- Response factor v walking speed
- Acceleration v harmonic forcing frequency (including criteria of response factor: R, BBN or ASHRAE)
- Dynamic load factor v forcing frequency
- Participation factor v modes
Transient analysis
- Velocity response v walking frequency (including criteria of response factor: R, BBN or ASHRAE)
- Velocity v time
- Participation factor v modes

(GSA Bridge)

Analysis options

Influence analysis
Optimisation of bridge loading
Bridge alignments
Vehicle paths
Standard and user defined vehicles
- Full carriageway optimization
- Lane by lane optimization
Expand bridge loads
Static analysis
- Retain results at influence points

Bridge load optimisation for vehicle loads

Australia: Manually bridge load optimisation for the draft DR 00375 of September 2001
Eurocode: Manually bridge load optimisation for the draft prEN 1991-2 of August
Hong Kong: SDM
UK: BD37, BD21 HB, BD86 SV-TT, BD86 SV-Train, BD86 SV-150, BD86 SV-100, BD86 SV-80
US: Manually bridge load optimisation for AASHTO (edition 16)

(GSA Fabric)

Form finding by the dynamic relaxation method with the following options

Fabric analysis