Analysis and Design of DuPonts Steel Framing Systems Using WinSCADS and GT STRUDL Jeffery A. Stokes, PE E.I. Du Pont De Nemours and Company 20th Annual Users Group Meeting & Training Seminar June Las Vegas, NV Magdy S. Roufaiel, PhD, PE Roufaiel Associates Intl, Inc.

WinSCADS General Overview WinSCADS is DuPonts 3D structural modeling tool used to automate structural steel design process. S tructural C omputer A ided D esign S ystem

Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface. Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis. WinSCADS Interface with Other Systems. The Design Process

Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface. Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis. WinSCADS Interface with Other Systems. The Design Process.

WinSCADS General Overview (Cont.) 1970s – DuPont FRAME Program. 1980s – SCADS - VAX system using CRAY NASTRAN for analysis s – PC-SCADS, a DOS version (GT-STRUDL, PD- STRUDL, and STAAD) – WinSCADS - Windows-based version was released (Microstation-based graphics for model display) to date – User interface has been redeveloped to utilize OpenGL for graphics and to improve user interaction with the system. Historical Background

WinSCADS General Overview (Cont.) Hundreds of DuPont buildings have been designed by the system and the data has been saved on our CES server. When modifications or additions are made to buildings, we are able to utilize the existing models since compatibilities have been maintained over the years May build the same Facility at another US site or overseas. Design loads may change (wind or seismic) Historical Background (Cont.)

WinSCADS utilizes GT STRUDL for the structural analysis tasks of the system. As structural steel model evolves the information is uploaded as necessary to the 3D Plant Design system (PDMS). Final design model is transferred to SDS2 or X-Steel for electronic detailing. WinSCADS General Overview DRAFTING UPDATE CONSTRUCTION APPLICATIONS DETAILING PDMS REFINER ADD-SIZE FOUNDATION CONNECTIONS DISPLACEMENT MODEL GENERATION STATIC ANALYSIS STEEL CODE CHECK GRAPHICAL REVIEW ANALYSIS MODEL CONSTRUCTION MODEL ANALYSIS RESULTS DESIGN RESULTS REPORTS GENERATION GEOMETRY, LOADINGS, MASS, USER-TABLES FREQUENCY ANALYSIS

User Interface WinSCADS General Overview (Cont.) Model Generation – Geometry & Loading

User Interface WinSCADS General Overview (Cont.) Model Generation – Static & Frequency

WinSCADS General Overview (Cont.) Model Generation – User-defined Steel Table User Interface

WinSCADS General Overview (Cont.) Graphical View

WinSCADS General Overview (Cont.) Select the elements, floors or elevations to view

Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface. Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis. WinSCADS Interface with Other Systems. The Design Process.

WinSCADS Data Model WinSCADS model generation uses a system of floor elevations, intersecting column lines, bay widths, center lines of equipment, and other geometric object. Process is analogous to laying out an engineering drawings, familiar to engineers and designers working with the chemical and industrial facilities. The model is built floor by floor with the system automatically bringing the columns up to each level to create a 3D model.

WinSCADS Data Model (Cont.) Common elements like vertical bracing, floor openings and equipment supports are automated. Beams are generated as physical members rather than a series of analysis members. First cut steel sizes based on the gravity loading are generated automatically and added to the database.

WinSCADS Data Model (Cont.) There is a multitude of default values assigned to types of members to save time. Fixed ends for beams framing into columns Pinned ends for interior framing K-factors for columns and bracing Assigned UBL values look not just a member framing in but also direction. Others … Internally, WinSCADS generates database tables to store and manipulate all the input and output data.

WinSCADS Data Model (Cont.) WinSCADS model generation uses a system of floor elevations

WinSCADS Data Model (Cont.) …. and intersecting column lines and bay widths

WinSCADS Data Model (Cont.) The model is built up floor by floor with the system automatically bringing the columns up to each level to create a 3D model

WinSCADS Data Model (Cont.) Next Floor ……

WinSCADS Data Model (Cont.) Physical (Construction) Model Specified Loads Analysis Model Analysis Loads

WinSCADS Data Model (Cont.) Major Components of WinSCADS Internal Database Model Building Control Parameters User-defined System Settings User-defined Building Settings FloorsX-Column Lines Y-Column Lines Blocks X-Bents Y-Bents BeamsColumns Gravity Loads Uniform Wind/Seismic Loads Equipment Openings Horizontal Loads Point/Line Wind/Seismic Loads Diaphragms Q-Joints Mass Grid PointsLoad Cases Load Combinations Frame ElementsPlate Elements System Steel Tables User-defined Steel Tables Static Results Frequency Results Code-Check Results

WinSCADS Data Model (Cont.) WinSCADS Built-in Analysis/Design Capabilities ANALYSIS Static – Linear & P-Delta Frequency Analysis Response Spectrum DESIGN CODES ASD9 LRFD ASD8 CISC BSI NEN I/O UNITS ENGLISH METRIC SI STEEL TABLES STEEL SECTIONS W WB WC C, WT L, SL, LL TS, SP S1, S2, S3

Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface. Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis. WinSCADS Interface with Other Systems. The Design Process.

Automation of GT STRUDL input-data preparation Prepare GT STRUDL Input …

Automation of GT STRUDL input-data preparation (cont.) View GT STRUDL Input …

Running GT STRUDL from within WinSCADS Execute an Analysis/Design Cycle …

Previewing results using GT STRUDL

Previewing results using GT STRUDL (cont.)

Transferring results from GT STRUDL to WinSCADS

Transferring results from GT STRUDL to WinSCADS (Cont.) Translates GT STRUDL DBX files to WinSCADS Format

Previewing results using WinSCADS

Previewing results using WinSCADS (Cont.)

Design data

Natural frequency and mode shapes analysis

Natural frequency and mode shapes analysis (cont.)

Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface. Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis. WinSCADS Interface with Other Systems. The Design Process.

WinSCADS Interface with Other Systems DRAFTING UPDATE CONSTRUCTION APPLICATIONS DETAILING PDMS REFINER ADD-SIZE FOUNDATION CONNECTIONS DISPLACEMENT MODEL GENERATION STATIC ANALYSIS STEEL CODE CHECK GRAPHICAL REVIEW ANALYSIS MODEL CONSTRUCTION MODEL ANALYSIS RESULTS DESIGN RESULTS REPORTS GENERATION GEOMETRY, LOADINGS, MASS, USER-TABLES FREQUENCY ANALYSIS

WinSCADS Interface with Other Systems (Cont.)

DRAFTING

WinSCADS Interface with Other Systems (Cont.) DRAFTING

WinSCADS Interface with Other Systems (Cont.) DRAFTING

WinSCADS Interface with Other Systems (Cont.) DRAFTING

WinSCADS Interface with Other Systems (Cont.) PDMS

WinSCADS Interface with Other Systems (Cont.) DETAILING

Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface. Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis. WinSCADS Interface with Other Systems. The Design Process.

The Design Process WinSCADS Working model …. New portions of structure added Floor elevation changes, infill steel revised, etc, changes & changes

The Design Process (cont.) PDMS model needs to be updated continually as the design progresses

Model viewed from WinSCADS Model viewed from GTStrudl Changes are automatically included in the GTStrudl Model since the analysis model is regenerated each time The Design Process (cont.)

Microstation Design Drawings are generated and updated until Construction Release quality The Design Process (cont.)

Update PDMS, Drawings, SDS2 Or individually

Drawings & SDS2 Model are transferred to detailing firm to create erection drawings via SDS2 The Design Process (cont.)

From which they create connection details via SDS2 The Design Process (cont.)

Steel is fabricated and sent to the field for erection The Design Process (cont.)

And finally to project completion. Via WinSCADS + GTStrudl, Microstation, PDMS and SDS2 The Design Process (cont.)

Presentation Thank you Questions