Presentation on theme: "Alistair Wells Glen Hutchinson Drawings. Building Information Modeling Still the main goal is to generate drawings of the construction for various purposes."— Presentation transcript:
Alistair Wells Glen Hutchinson Drawings
Building Information Modeling Still the main goal is to generate drawings of the construction for various purposes Each construction team member requires drawings Can we use BIM/3D to improve the overall drawing creation workflow
Traditional Method/Workflow Contract docs A & DSketches & calcs Large Sheet GA drawings Connection details GA drawings Cast Unit / Shop tickets Drawing information usually combined into very busy detail drawings. Sometimes 8-1/2” x 11” Contained architecture, weld, plate, and other information all together Many to do and track, very time consuming (200-300) drawings to track Then must track thousands of reference calls to (marks/symbols) GA showing which detail drawing
Traditional Method/Workflow Contract docs A & DSketches & calcs Large Sheet GA drawings Connection details GA drawings Cast Unit / Shop tickets With a model do we need GAs to do shop tickets? With a model do we need drawings for approvals? Do we need fabrication level of detail in these drawings? Lets simplify drawing for the correct audience!
Team Member Drawings Fabrication info for production & schedule Info for approvals (mainly connxs) how to weld & put building together Arch details How reveals line up Key is all have slightly different uses
Team Member Drawings With 3D models does fabrication need so many details? We used to do them so that others could make shop drawings. Should we have less detail in them OR do them at different stage? Erectors are concerned with welds and geometry fit dimensions, not so much studs and embed information, can there be a set of “connection” drawings that contains only the “erection” information? Can engineering offices use models, shop drawings, or GA drawings to approve design or do we still need these traditional small detail drawings combing engineering, fabrication, architectural, and erection information? Can architects offices use models, shop drawings, or GA drawings for approvals?
Connection drawings Drawings to show placement of embed for sharing information to 3 rd party. To show how to weld, bolt, and erect pieces on the job site…”how to put the building together.” These are done before reinforcing the model and before most shop drawings in stages as information is available.
Current procedure: 1.Create views of component 2.Create new GA drawing of views 3.Edit drawing to add information 4.Move drawing later when connx. moves in model, re-edit drawing 5.Create hundreds of section and details symbols referring to where to find connx. drawing in project – for GA erection 6.Update/edit GA drawings to fix reference to changed connection in model (loop several times steps 3-6 typically, for many connxs) Current Connection Drawings… New procedure: 1.Tell TS to create connection Drawings.(selected, all, etc…) 2.Edit drawings as necessary
Conclusion 1.Significant Productivity gains for projects 2.Reduction in errors 3.Automation of tedious, unpleasant task of creating and views that could move 4.Drawings at earlier stage to coordinate project has a lot of value
1. Productivity gains Future procedure: 1. Tell TS to create connection Drawings. (selected, all, etc…) 2. Edit drawings as necessary Re-editing drawings is not necessary as they are associative to connections. Creating reference to drawings is not necessary with expansion of connection marks functionality and associativity.
1. Productivity gains Future procedure: With associativity and automation of connection drawings and reference mark it is possible to cut down on time by an estimated 60%. This could lead to savings around 10%-15% of drafting project time. This is huge savings!
2. Reduction in errors: Many errors arrise from model changes not being reflected in these GA-Conneciton drawings. It takes time and manual tracking of changes by multiple people at multiple times to coordinate these 200+ drawings to the model constantly – this could be drastically reduced by parametric drawings to connections. This would in turn result in more accurate, up to date, less error drawings for both erection drawings showing connection location and mark but also for the many connection drawings.
2. Reduction in errors: It is hard to quantify the savings from re- editing of GA connection and GA erection drawings but it would be significant on typical project. Changes happen. This would be key new feature for industry. Biggest complaint from user at Coreslab is manually managing and re-editing these drawings after doing several projects in TS.
3. Automation of tedious tasks: Either user has to create model views of hundreds of connections and move to drawing sheets or create views from plan/elevation drawings and move to blank new sheets. This is a very logical, repetitive, tedious tasks that has a lot of potential to automate. I asked a few users recently what was least favorite part of doing drawings in TS, creating connection drawings and referencing to plan/elevation was a common answer. It is the moving of this reference symbol on drawings and updating of extrema that is mindless editing of drawings that is truly undesirable.
4. Drawings at earlier stage: Due to re-editing of connection drawings they are often put to last moment, but with invention of connection drawings these could be done much sooner without problem of repetition of editing. This could result in drawings much sooner to coordinate with 3 rd party providing much benefit to project.
Connection Drawings 1.Create Empty Drwg 2.Create Dummy GA Drwg 3.Cut Section in Dummy GA 4.Move section to empty drwg 5.Add views 6.Edit… Product -.NET development Current procedure: Create views of component Create new GA drawing of views Edit drawing to add information Move drawing later when connx. Moves in model, re-edit drawing Create hundreds of section and details symbols referring to where to find connx. Drawing in project – for GA erection Update/edit GA drawings to fix reference to changed connection in model (loop several times steps 3-6 typically, for many connx.s)
Product -.NET development 1.Create Empty Drwg 2.Create Dummy GA Drwg 3.Cut Section in Dummy GA 4.Move section to empty drwg 5.Add views 6.Edit… 1.Push button 2.Edit…
Product -.NET development
“The process of marking connections in the model, keeping track of which connections have which marks, and naming the detail drawings for each connection correctly is rather tedious with lots of room for user error. The tool that Charles has created makes this process much faster and far less prone to errors … I plan on making this tool part of our modeling/detailing process on projects moving forward.” - Jason Reffner, Newcrete “The new component manager tool is a great addition to Tekla, allowing precast users to easily manage and create connection drawings using localizations built into Tekla or their own custom settings. This tool should help expedite the erection drawing process.” - Dave Foley, High