Monday, 21 August 2017

How to Manage Rebar Numbering with Dynamo

Before we move into the Dynamo part let me quickly highlight rebar numbering and partitioning in Revit.

In Revit, numbering allows identical reinforcement elements to be matched for schedules and tags.

Partitioning in Revit gives you the ability to define a common parameter for reinforcing elements within a certain construction sequence. Rebar elements are automatically given a unique number within same partition based on their type, shape & geometrical parameters.

Partitioning for reinforcement identification serves a number of organizational purposes depending on how a building is designed or how it will be constructed. Any rebar, rebar set, or fabric sheet instance in a model can only be assigned to one partition.

The number for a rebar or fabric sheet instance as well as its partition may be viewed in the Properties palette under Construction.

You can use the Reinforcement Numbering dialog to make adjustments to rebar numbering sequences.
Using this dialog you ran quickly and easily rename your partitions and renumber rebar elements within a specific partition.

The Minimum number of digits for reinforcement numbers option specifies the minimum number of digits to display in a sequence. For example, when set to 3 digits; rebar number 2 displays as 002.

Minimum number of digits for reinforcement numbers

The Remove Gaps option becomes active when one or more gaps exist in a sequence. The checkbox removes gaps in the numbering sequence of rebar and fabric sheets in a partition.

Remove Gaps

This is a very convenient tool to manage rebar numbering however sometimes we need apply some specific, more sophisticated rules for how our rebars should be numbered. This is a common problem for many structural detailers.

For example, let’s image a situation where we would like to have all rebars numbered within the same partition from the shortest rebar to the longest one…

If you have already started thinking how you could do this in Revit, I have to tell you to stop. This is an instance where Dynamo for Revit comes in handy and is the right tool at the right time!

Let me show you how helpful Dynamo is for this issue.

I made a few assumptions:

  • In my Dynamo script I want to select all rebars from a specified partition automatically (this is so there is no need to select any rebars in my model).
  • All rebars from the given partition will be renumbered from the shortest rebar to the longest one.
  • I want to be able define a starting number of the shortest rebar.

Because the Rebar Number parameter is read-only, first I need to create a project parameter which I call “New Rebar Number” and then I end up with the following Dynamo script:

As the first step I need to select all rebars from a partition I specify.

Next, it’s time to get information about the lengths of my rebars. Even though my project is metric I need to make a units conversion to have them presented in millimeters rather than in feet.

Knowing lengths of my rebars, now I am able to sort the list of rebars by lengths.

… and finally it’s time to renumber the rebars:

Now I can create a rebar bending schedule based on the New Rebar Number parameter!!

For more posts on Revit’s rebar features, check out these past articles on BIM and Beam:

@tomekf

The post How to Manage Rebar Numbering with Dynamo appeared first on BIM and Beam.



from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/08/21/how-to-manage-rebar-numbering-with-dynamo/
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Wednesday, 16 August 2017

Steel and Stone: Autodesk Advance Steel helps structural steel company reduce schedule by 50%

3D Autodesk Advance Steel model of The Lucas

Several years ago, Lawton Welding Co. Ltd., a miscellaneous metals and small structural steel company based in Topsfield, Massachusetts, took on a project detailing and fabricating the steelwork for an old stone church that was being renovated and repurposed. The project was fraught with rework orders — largely due to the irregularities of the stone structure — and took nearly three months to complete.

More recently, Lawton tackled a similar – but much larger – project, detailing and fabricating the steel for a former church in downtown Boston. The late-1800s stone structure, which was being converted into eight stories of condominiums, presented many of the same challenges as the previous project. Lawton finished the newer project in around six weeks.

The difference? In the interval between the two projects, Lawton gained the ability to detail steelwork in three dimensions by adopting Autodesk Advance Steel detailing software.

“This project was probably ten times bigger than the previous one, and we got it done in less time,” says Derek Michaud, detailing supervisor at Lawton. “With this one, we had almost no rework. Before, I would get frantic phone calls from my install crews when changes were needed,” Michaud adds. “In the new system, you make the change, and everything automatically moves with it. It’s a much cleaner process. It’s night and day.”

The Project

The Lucas, an 80,000-square-foot development located in Boston’s South End and designed by Finegold Alexander Architects, is the transformation of an 1874 German Trinity Catholic Church into a unique residential development.

The Lucas

Before it was high end residential housing, The Lucas was an 1874 German Trinity Catholic Church. Image courtesy of Lawton Welding, Co., Ltd.

The design maintains the church’s existing puddingstone façade and exterior walls, but also places a new eight-story building in the center of the church’s footprint. The glass and steel rising up from behind the original stone creates a dramatic visual contrast, but it also presented formidable challenges for Lawton’s detailing team.

“The design makes things far more complicated, because we have to interact with the existing structure,” says Michaud. “On a new building, you control everything. If a column is off by a quarter inch, all my steel matches that column no matter what. In existing buildings, you don’t have that luxury. You have to be close enough to the walls, but not hit them. You can’t be too far away, because then you don’t get the performance of the design.

Rapid Return on Investment

One of the chief benefits of adopting 3D detailing software, Michaud says, is the dramatic time savings that the new method enables – at nearly every step of the detailing and fabrication processes. “It allows us to do more work in the same amount of time, without increasing payroll,” Michaud says.

3D Autodesk Advance Steel model of The Lucas

3D model of the steel frame for The Lucas residential development in Boston’s South End. The development is a renovation and reimagining of the original structure. Image courtesy of Lawton Welding, Co., Ltd.

Not only does the detailing work itself go more quickly in Advance Steel, but the software also prevents employees from having to double back over their work to fix mistakes. Additionally, Advance Steel automatically generates computer numerical control (CNC) fabrication files, eliminating another time-intensive step.

On The Lucas, Lawton shared its detailing plans with the project’s plumbing and HVAC contractors. These contractors then told Lawton where in the beams to put additional holes. Consequently, Lawton was able to cut the holes in the fabrication shop, rather than sending employees out to do the work in the field.

Improved Accuracy

One number, more than any other metric, illustrates the impact of Lawton’s move to Advance Steel: 10 percent. That was the firm’s average error rate on the steel it fabricated before making the switch. Today, Lawton’s error rate has dropped to under 1 percent. Michaud estimates that the firm has an error on only one or two out of every 250 beams produced.

“With so many human steps, holes would be off all the time,” Michaud says. “We would drill holes, check the layout, and then we would have to fill the holes back in and re-drill them by hand. That was a constant problem.”

“All of that is on us,” he adds. “Any fabrication error, any material waste, all of that is 100 percent on us. You can damage a profit line pretty quickly if you’re not careful.”

Before Lawton made the switch, Michaud says, there was little standardization in fabrication drawings, which contributed to the higher error rate – and to frustration on the part of the fabricators. “We had seven guys who drew seven different ways,” Michaud says. “Now our drawings all come out exactly the same. Our fabrication shop likes it better, and we no longer have errors being calculated by humans along the way.”

The software also helps prevent connection problems by allowing detailers to better see how their drawings will work in the real world. “Working in three dimensions allowed us to visually see everything, to make sure we had room for bolts, to make sure the plan was strong enough before we sent it to our engineer. We saved time on our engineering re-design work, and everything fit together smoothly.”

On The Lucas, detailers needed to draw around the existing walls, which bowed in and out at various spots. A field crew provided a three-dimensional survey of the interior walls, and Lawton imported that data into Advance Steel, allowing detailers to draw with precision down to a quarter of an inch. This level of precision, Michaud says, helped to drastically reduce rework.

The Power of BIM

On The Lucas project, architects didn’t provide Lawton with a three-dimensional design model from a building information modeling (BIM) software such as Revit. If the firm had started with such a model, Michaud says, the detailing would probably have gone even more quickly. “If we would have started with a Revit model, we probably would have cut about a week off,” he says.

Increasingly, Michaud says, BIM tools are becoming an industry standard. “A lot of the companies we work with now require BIM compatibility,” he says. “If you can’t draw in 3D, you can’t even quote the job. It’s definitely giving us an advantage.”

Kinked Beam in Autodesk Advance Steel

Steel detail of a kinked beam in Autodesk Advance Steel. Image courtesy of Lawton Welding, Co., Ltd.

Tools like Advance Steel not only help Lawton win more jobs and complete those jobs more quickly, but Michaud says that BIM solutions also reduce stress on him and his workers while increasing client satisfaction. On The Lucas project, for example, concrete anchors were placed an inch and a half off from where they were supposed to be, requiring Michaud and his team to make that same shift in the plans for the entire project.

“We had to move the whole building an inch and a half, right before we started fabricating it,” Michaud recalls. “With Advance Steel, we were able to do that in twenty minutes. In two dimensions, it probably would have taken one or two days, and then we would have had to hope that we didn’t make a mistake during the rush. We definitely would have missed our install date.”

“With BIM,” Michaud adds, “it’s amazing how smooth and how fast things can go.”

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/08/17/lawton-welding/
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Friday, 4 August 2017

Partnership Between IDEA StatiCa and Graitec

As the structural steel industry adopts more BIM-based solutions, technology providers are finding creative ways to deliver more integrated solutions to their customers. An example of this is a new international collaboration and partnership between the software providers IDEA RS and GRAITEC Group.

The 2018 release of GRAITEC’s Advance Design platform will deliver a new, powerful application for structural engineers involved in steel joint design called Advance Design ConnectionAdvance Design Connection is a unique version of IDEA StatiCa Connection, rebranded and tailor-made for GRAITEC users in France, UK, Germany, USA, Canada, Brazil, Poland, Italy, Romania, Czech Republic and Slovakia. You can learn more about this partnership and their new technology here.

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/08/04/partnership-idea-statica-graitec/
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Friday, 28 July 2017

FIRE RESISTING PROPERTIES OF COMMON BUILDING MATERIALS

FIRE RESISTING PROPERTIES OF COMMON BUILDING MTERIALS Fire resisting properties of common building materials such as stone, brick, timber, cast-iron, glass, steel and concrete are mentioned below. 1. STONE The stone is a bad conductor of heat. But it suffers appreciably under the effects of fire. The stone is also liable to disintegrate into small […]

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from CivilBlog.Org http://civilblog.org/2017/07/27/fire-resisting-properties-common-building-materials/
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Tuesday, 25 July 2017

Autodesk Structural Precast Extension for Revit Software Overview

Autodesk Structural Precast Extension for Revit

Autodesk® Structural Precast Extension for Revit® is a BIM-centric offering for modeling and detailing precast elements that improves productivity and precision for engineers, detailers and fabricators working on typical building projects in the precast industry. As an app for Revit, Structural Precast for Revit provides Revit users access to powerful tools for automatic rule-based segmentation, reinforcement, shop drawings and CAM files generation of precast planar concrete elements. The product is mostly suitable for typical building projects, made up of slabs and walls produced in factories with a high level of automation.

For more posts on structural precast in Revit, , check out these past articles on BIM and Beam:

Announcing Autodesk Structural Precast Extension for Revit 2018, a notable step toward the future of automatically making structural things

Precast Column with Corbels in Revit

@tomekf

The post Autodesk Structural Precast Extension for Revit Software Overview appeared first on BIM and Beam.



from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/07/25/autodesk-structural-precast-extension-for-revit-software-overview/
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Sunday, 23 July 2017

5 FACTORS CAUSING DISINTEGRATION OF CONCRETE

CAUSES OF DISINTEGRATION OF CONCRETE The primary reasons that cause disintegration of concrete member are desribed below. 1. SULPHATE ATTACK Soluble sulphates are present in Ground water Soil Clay bricks Soluble sulphates react with Tricalcium Aluminate of cement I n the presence of moisture and form products which occupy much bigger volume than that of […]

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from CivilBlog.Org http://civilblog.org/2017/07/22/5-factors-causing-disintegration-concrete/
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Thursday, 20 July 2017

HOW TO MINIMISE THE DEFECTS IN PLASTERING WORK?

Minimising Defects in Plastering Work Defects in plastering work can be minimised by following the below mentioned techniques. The brick and plastering work should be carried out by skilled masons in the best workmanship manner. Bond of brick work should be properly maintained. Efflorescence is removed by rubbing brushes on the damaged surface. A solution […]

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from CivilBlog.Org http://civilblog.org/2017/07/21/minimise-defects-plastering-work/
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Tuesday, 18 July 2017

SITE ENGINEER’S CHECK LIST FOR QUALITY BRICKWORK

BRICKWORK CHECK LIST FOR SITE ENGINEERS While on site, a site engineer must ensure that the brickwork is going on as per quality requirements. Some of the general requirements of quality of brickwork are mentioned below. Use this as a checklist while executing brickwork. The thickness of joint in brick masonry should not exceed 1 […]

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from CivilBlog.Org http://civilblog.org/2017/07/19/site-engineers-check-list-quality-brickwork/
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Friday, 14 July 2017

4 PRIMARY CEMENT COMPOUNDS & THEIR ROLES

Compounds of Cement About 90-95% of a Portland cement is comprised of the four main cement minerals, which are C3S, C2S, C3A, and C4AF, with the remainder consisting of calcium sulphate, alkali sulphates, unreacted (free) CaO, MgO, and other minor constituents left over from the clinkering and grinding steps. The four cement minerals play very different […]

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from CivilBlog.Org http://civilblog.org/2017/07/14/4-primary-cement-compounds-roles/
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Wednesday, 12 July 2017

Announcing Autodesk Structural Precast Extension for Revit 2018, a notable step toward the future of automatically making structural things

Autodesk Structural Precast Extension for Revit

Autodesk brings into play a new automated workflow for the precast concrete industry. The Autodesk Structural Precast Extension for Revit 2018 is a BIM-centric offering for modeling and detailing precast elements that promotes productivity and precision for engineers, detailers and fabricators working on typical building projects in the precast industry. As an app for Autodesk Revit software, Structural Precast for Revit provides Revit users access to powerful tools for automatic rule-based segmentation, reinforcement, shop drawings and CAM files generation of precast planar concrete elements. The app will be available in a few days on the Autodesk App Store.

Leveraging the concept of Parts, which support the construction modeling process by letting you divide certain elements from the design intent model into discrete parts, the app provides the opportunity of having one single source of truth for various personas that need to work with the model. This way, designers’ and fabricators’ perspectives are respected and various Levels of Development can be displayed – two key benefits of embracing a Revit-based workflow for Precast projects.

Based on predefined parameters in the “Configuration” dialogue box, you can specify the rules that will help drive the automated workflow downstream from Design to Fabrication. First up, the elements are automatically segmented and fitted with connectors, lifters and bushings. All of these are actually Revit families, so customization is easy. Reinforcement is also done automatically and you can define multiple patterns, based on fabric sheets or rebar sets. There is even a tool that creates Custom Fabric Sheets, where each wire can have its own diameter, length and distance with respect to the adjacent wires. This is useful both for optimizing the rebar consumption based on structural analysis and for minimizing clashes with various MEP equipment that might be embedded or going through the panels.

Speaking of embeds, the app comes with another tool that automatically adds to the corresponding precast assemblies all the electrical sockets, cable ducts, extra rebars or any other kind of component that is in the model. This way, the precast walls and slabs will contain the logic that is required for fabrication, minimizing much of the hassle in the factory or on site.

Autodesk Structural Precast for Revit, precast solid wall assembly

Precast solid wall assembly, fitted with reinforcement and mounting parts.

One particularly powerful tool that Structural Precast for Revit offers is Automatic Shop Drawings. Once the company’s standards related to drawing style and content are embedded in the drawing templates, for each precast element the drawing is created, with all relevant views and bills of materials. If required, multiple shop drawings for each assembly can be generated; for instance, one showing the reinforcement and one highlighting the position of the embeds. It’s also worth mentioning that this Automation tool can be used with company standards for all elements at once, all elements per submittal or per element.

Autodesk Structural Precast Extension for Revit, automatic shop drawings

Automatic shop drawing sample for a precast solid wall.

And because we are working in Revit, coordination of the precast model with Architecture and MEP comes as a natural benefit. In the highly likely event that changes need to be performed to the precast elements (we all know change is a daily routine in the construction industry) you don’t have to worry: the precast elements, shop drawings and bills of materials are automatically updated—helping to keep information up-to-date.

When Fabrication is ready to start, with just one click, the creation of CAM files is done. Both Unitechnik (versions 5.2 and 6.0) and PXML (version 1.3) are supported. The various file naming options and output settings offer flexibility to generate these deliverables simultaneously in a swift and tailored fashion.

Precast solid wall checked for production using Progress Machine & Automation AviCAD software, based on a PXML file.

The product is mostly suitable for typical building projects, made up of slabs and walls produced in factories with a high level of automation. Currently, three types of elements are supported by the new app: Solid Walls, Solid Slabs and Hollow Core Slabs.

Of course, we need to remind ourselves that it’s not only about design and detailing, but also about construction coordination, planning and execution. And that’s when I recommend you to export the Revit model to Navisworks Manage and BIM 360 Team. Or, if you are in the position to meet with your customer and walk him or her through the details of their future building, why not do it in Revit LIVE, so she/he can view, better understand, feel and experience it before it is being built?

Autodesk Structural Precast Extension for Revit, view in BIM 360 Team.

Coordination view of the precast solid wall in BIM 360 Team.

With Structural Precast for Revit, Autodesk makes a notable step ahead for the future of automatically making structural things with this new precast concrete design software tool. So go ahead, try it, and let me know your impressions around it.

 

 

 

 

The post Announcing Autodesk Structural Precast Extension for Revit 2018, a notable step toward the future of automatically making structural things appeared first on BIM and Beam.



from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/07/12/autodesk-structural-precast-extension-revit/
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Free Form Rebar Distribution in Revit 2018.1

A new type of Rebar can be modeled in Revit 2018.1, by working in 3D views and selecting the structural element faces to which the rebars are aligned.

Free Form Rebars can have any geometry, either planar or 3D, and can be used for modelling and detailing of reinforcement in complex 3D structural elements.

Rebars are created at the cover distance from the intersection of the references that the Revit user selects. One reference can be made up of one or more structural element faces.

The Surface Distribution rebar type consists of bars that transition between the Start Surface and the End Surface and are distributed along the Host Surface.

Free Form Rebars are part of the Structural Rebar category, and have all the properties associated with it. Free form Rebars can be created as single bars or rebar sets, rebar quantity for every instance of a Free Form Rebar can be easily adjusted.

Then the rebar constraints can be managed using in canvas tools in 3D views to provide enhanced and accurate rebar placement.

You can use customizable numbering settings and provide accurate shop drawings with schedules that display varying lengths in Free Form Rebar sets to better drive fabrication.

This new functionality increases 3D rebar modeling versatility and helps you define the accurate reinforcement for non-standard shapes of concrete elements.

Download a sample dataset to try this feature out.

For more posts on Revit’s rebar features, check out these past articles on BIM and Beam:

The post Free Form Rebar Distribution in Revit 2018.1 appeared first on BIM and Beam.



from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/07/12/free-form-rebar-distribution-in-revit-2018-1/
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8 PRIMARY REQUIREMENTS OF FORMWORK

REQUIREMENTS OF FORMWORK – QUALITY, SAFETY & ECONOMY In the selection of materials for formwork, the three general principles of quality, safety and economy must be paramount. Material quality can ensure safety, and significantly contributes to the achievement of economy. Formwork failure can result in loss of life and always causes catastrophic financial loss. Some […]

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from CivilBlog.Org http://civilblog.org/2017/07/12/8-primary-requirements-formwork/
via Our favorite Civil Engineering Blog

Wednesday, 28 June 2017

Updated Standard Structural Steel Families for Revit

New content for the Southern Hemisphere and much more

As an ongoing process, Autodesk is updating Revit content every year to match the local standards from all over the world.

With the 2017 release, Revit obtained a new structural detailing tool, Steel Connections for Revit,” an extension that can be installed from the Autodesk Desktop-App to model typical steel connections on framing elements. At the same time, new framing and column families were shipped with Revit, supporting the connection code check with exact and complete information on section geometry and analysis parameters.

While the first content release was focused on the United States, Canada and four European countries, we continued to enhance structural content for other regions all over the world – one of the most common requirements suggested during conversations with our international sales partners. A second step was made with the 2017.2 version in autumn last year, when Japanese and Chinese framing section families were delivered. Most recently, the standard structural steel families were extended for Australia, New Zealand, South-Africa, India and several more European regions like Scandinavia in the spring of this year. All the mentioned new families are delivered with the Revit 2018 installation out of the box. And there’s more to come! Right now, the team is again updating the content for even more regions.

U.S. Imperial structural columns

File location of U.S. Imperial structural columns as an example

German structural column

File location of German structural columns as an example.

A complete list with the available content and the file location can be found here. Keep a look out for new content by checking the Revit Product Downloads page from time to time for new updated content available for your region. For example, you can find there the new structural framing families mentioned above for Revit 2017 as well as a fix for some European framing families for Revit 2018 that enable the smooth model synchronization with Advance Steel.

Revit 2018 Content Hotfixes

What do you think about Revit’s out of the box content? How often are you using Autodesk structural framing and column families in your projects? Are you missing section sizes for your region or special parameters for your content? Let us know!

The post Updated Standard Structural Steel Families for Revit appeared first on BIM and Beam.



from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/06/28/updated-structural-steel-families-for-revit/
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Monday, 26 June 2017

Arup uses Dynamo to advance the pace of collaboration on the proposed National Football Stadium in Sydney

Full Stadium Rendering

The structural engineers at Arup in Australia take on some of the country’s most challenging projects. So it’s no surprise that they paired with the architects at Populous to design the structure for the proposed, 60,000‑seat National Football Stadium in Sydney. That’s because the architects’ initial designs featured curving organic forms and plans for Australia’s first cable net roof for a major stadium. The Arup team was tasked with bringing innovative and cost-effective structural ideas to the project’s concept phase—and they had just 12 weeks to collaborate with the architects and deliver.

The Arup team realized that they needed a way to both quickly explore the best structural options for the project and to increase documentation efficiency. A computational design tool was the ideal solution. They chose to work with Autodesk Revit software, their core documentation application, and Dynamo software. Autodesk Revit with Dynamo powered the project forward, letting the team advance the concept twice as quickly as compared to traditional methods. And now it’s transforming the way that Arup delivers other projects.

“We used Dynamo to rationalize and apply a logic to a complex structure. The powerful part of Dynamo is how it let us develop and improve on concepts quickly. Because of the pace it brought to our workflow, we did 12 iterations instead of 3 or 4.”
— XAVIER NUTTALL Structural Engineer, Arup

12 concepts in 12 weeks

With only 12 weeks for the documentation of the concept design, Arup needed to get started right away with Dynamo—there was no time for a steep learning curve. The documentation lead on the project had little scripting experience in Dynamo, but she was able to quickly create master scripts thanks to the intuitive nature of the process. These scripts let the engineers explore and document multiple structural options that suited the ever-evolving architectural forms. The scripts automated much of the tedious work behind efficiently modeling and documenting the geometrically complex stadium. During the early stages of concept design, Dynamo let the Arup and Populous teams quickly and efficiently collaborate, resulting in an iconic, well-coordinated, and optimized stadium design. This was particularly advantageous in helping to de-risk the complexity of the design while also informing costing and feasibility.

Interoperability between Dynamo software, Revit software, and Arup’s preferred structural analysis tool helped the team to rapidly create design iterations. They shared their ideas with the architects and collaborated in a 3D Revit environment to enhance the overall design. In all, the team developed 12 concepts, each of which advanced and improved on the preceding one. Absent Dynamo, the team estimates that they would have only had time to develop and document 4 structural concepts. Dynamo automated many of the tedious tasks in the documentation process, saving more than 5 weeks on documentation, which allowed the team to devote more effort than expected to coordinating and optimizing their designs.

The bold, curving shapes featured in the design for the proposed National Football Stadium in Sydney, Australia required innovative structural support. Images courtesy of Populous.

 

More design, fewer boring tasks

Success on the stadium project inspired Arup to apply the conceptual design and automation ability of Dynamo to more projects. The firm began teaching its documentation specialists throughout Australia how to create their own scripts. Arup also started a script library to share timesaving scripts, allowing the Arup documentation team to spend less time on tedious tasks, and more time on design optimization for their everyday projects.

“Tedious documentation tasks that would have taken 4 hours only took 10 minutes using Dynamo. The savings we realized gave us more time to finesse better design solutions.”

— SHAWNEE FINLAYSON, Structural Technician, Arup

ABOUT ARUP

Founded in 1946, Arup is one of world’s largest engineering firms, with as many as 10,000 projects in progress at any time. The firm came to Australia in 1963 to work on the landmark Sydney Opera House. Today, Arup operates 7 offices in Australia. Recent projects include the new Perth Stadium, Adelaide Oval Redevelopment, Barangaroo, and 8 Chifley, which is one of Australia’s greenest buildings.

ABOUT POPULOUS

Populous designs places where people love to be together, like Yankee Stadium and the London Olympic Stadium. A global architecture firm, Populous has designed more than 2,000 projects worth $40 billion across emerging and established markets. The firm has 17 offices on 4 continents.

 

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/06/26/arup-national-football-stadium-in-sydney/
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Wednesday, 14 June 2017

David Weaver from Mold-Tek shares what steel fabricators can learn from green chili

David Weaver Mold-Tek

Autodesk is excited to welcome David Weaver, Vice President at Mold-Tek Technologies Ltd as a guest contributor to BIM and Beam. David is an evangelist and thought leader for the steel industry, and shares a unique insight on how project teams collaborate.

(or why fabricators should be happy if their detailer is asking a lot of questions)

Growing up and living in Colorado, a frequent meal for me is to take whatever food is around and smother it in a good green chili sauce. Top it with sour cream and guacamole, and serve it with a side of tortillas. There are even thriving local chain restaurants whose entire business model is to take the cheapest ingredients possible and smoother them in top notch green chili.

My mother in law has a different taste in food. She grew up in Massachusetts and spent most of her adult life in Northeast Virginia, Fairfax. I still remember the look of … concern in her face the first time she saw me do this. She is a great cook, and I have always enjoyed eating her food, but let’s just say that my ingredients and techniques are not within her repertoire.

What can a fabricator learn from this? Simple. That standards and techniques can be regional. Just because a shop or erector has always been doing something a certain way, doesn’t mean that it is an industry standard. Take for example the angle or bent plate attached to a beam top flange to form an edge of slab detail. In Colorado, the typical approach is for it to be fully field attached. The field even cuts the pieces to length and performs any other cuts to get it around columns. Alternatively, there is a fabricator in the New England area that will shop attach it, but only with bolts in long slots, so that the field can perform adjustments then weld into position. I’ve also seen projects in Las Vegas where this material is shop attached and welded with no field work.

A typical edge of slab detail (Courtesy of Mold-Tek Technologies Ltd.)

My point is, things that fabricators think are industry standards might be unique to their region, or even only unique to their company.

It used to be that detailers worked regionally. It was too cumbersome and caused too much of a delay to ship physical drawings too great of a distance. But today’s technology allows electronic drawing files to be sent across the world in the matter of seconds. It often takes longer to type the email notifying the fabricator that drawings are posted to a file sharing site, then it does to actually post the drawings. This allows detailers to work across all regions of the US and even the world. Meaning they might not be familiar with the exact approach that a fabricator wants to use for a specific detail. This is especially true for the first time a detailer works with a fabricator.

A detailer with little experience will not know when to ask for the fabricator or erector’s preference. They may just apply the same approach that they used on their last project, even though that last project was for a different fabricator who has different preferences. Experienced detailers know when to ask about preferences. Unfortunately, this results in probably the biggest complaint I hear from fabricators, “The detailer is asking too many questions!” (typically in much more colorful language that I am using here).

Questions are exactly what you want from your detailer. When a detailer is flooding you with basic questions, don’t assume they are delaying the project, or are inexperienced. In reality, they might have just the right amount of experience to know that the question needs to be asked.

Related Articles

How to forge a detailer-fabricator relationship as strong as steel

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/06/14/david-weaver-mold-tek-guest-post/
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Thursday, 8 June 2017

Multi-Rebar Annotation in Revit

A reinforcement drawing shows the positions of all reinforcing elements in a particular structure or a structural element. There are numerous ways of drafting concrete shop drawings, and drafting styles vary between countries or even between design companies.

Rebar in Revit comes with properties that can be read by predefined tags (families) created specifically to read the rebar settings. It’s possible to let Revit tag these items automatically, or you can manually tag the items.

Multi-rebar annotations significantly improve rebar detailing workflow. A multi-rebar annotation allows you to tag multiple rebar and rebar sets with a single annotation.

You can use these multi-rebar annotations to tag each bar in a rebar set with a detailed annotation for fabrication and construction.  Thanks to this functionality, drawing creation becomes quite smooth and productivity increases incomparably.

If you want to use this functionality in Revit you need to go on the Annotate tab -> Tag panel and under Multi-Rebar you can find the following two tools:

  • Aligned Multi-Rebar Annotation
  • Linear Multi-Rebar Annotation

Once you run one of them then you simply select rebar sets or individual rebars to have them annotated by one single annotation.  You can also modify multi-rebar annotations like other tags.

A Multi-rebar annotation family is a Revit system family. In the Type Properties you can find a tag family and a dimension style that can be easy configured and adjusted.

For more posts on Revit’s rebar features, check out these past articles on BIM and Beam:

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/06/08/multi-rebar-annotation-revit/
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Friday, 2 June 2017

6 IMPORTANT ENGINEERING PROPERTIES OF MORTAR

Properties of Mortar Properties of mortar which are sought for use in masonry are: workability, water retentivity, rate of stiffening, strength, resistance to rain penetration and durability. These properties have been discussed below explaining their effect on masonry. Choice of masonry mortar is governed by several considerations such as Type of masonry unit and its […]

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from CivilBlog.Org http://civilblog.org/2017/06/02/6-important-engineering-properties-mortar/
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Thursday, 1 June 2017

Sofistik Reinforcement Detailing 2018 is Available

SOFiSTiK Reinforcement Detailing significantly accelerates the creation of 2D reinforcement sheets out of 3D models in Autodesk® Revit®. The product consists of software and a set of families, which can easily be modified to meet local or company standards. Creation of bar lists, bending schedules and cut lists for wire meshes is included as well.

Functionalities at a glance:

  • Customizable Content Packs in order to reach individual standards.
  • Operational Modes: Marks per project, – sheet or – host.
  • Set Marks according to additional criteria’s like running length, not bent, couplers etc.
  • Customizable reinforcement schedules and cut lists for fabric sheets.
  • Group bars to a specific SOFiSTiK Rebar Container according its layout.
  • Copy Reinforcement with all annotations, details, dimensions and related views.
  • SOFiSTiK Multiplier for the quantity of Rebar Sets and Fabric Sheets.
  • Stagger segment lengths of SOFiSTiK Variable Rebar Set.
  • Split Rebar Sets or – Shapes according to set stock length and splice or using dividing lines.
  • Detailing tools to indicate the rebar layout, – bar ends, – layers, etc.
  • Rebar or Fabric Shape Details to represent the partial rebar set or the entire mark.
  • Shape Code detection according to various national standards.
  • Reinforcement Layer functionality in floors, walls and foundation slabs.
  • Browse through the marks of rebars and fabric sheets.
  • Distribute reinforcement in elements with complex shapes and faces.
  • Creation of bent fabrics rows according to a given length.
  • Revisions for reinforcement sheets and corresponding schedules.
  • Freeze/Unfreeze of reinforcement geometry and properties.
  • Export BVBS reinforcement data as *.abs file for bending machine.

You can download a 30-day trial of these tools from the Autodesk App Store.

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/06/01/sofistik-reinforcement-detailing-2018-available/
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Wednesday, 31 May 2017

BIM for reinforced concrete – From 2D to 3D for rebar detailing

Last year I published a blog post contemplating the value of BIM for Concrete, and discussing how the next generation of BIM tools for reinforced concrete are helping our customers in four main ways. I described these BIM-centric concrete benefits as:

  1. Combines the versatility of 2D documentation with the higher level of fidelity and accuracy of 3D modeling of steel reinforcement and concrete accessories, with minimal effort to produce both.
  2. Allows users to design and detail with clash prevention in mind to reduce clashes both in the preconstruction and site execution project phases.
  3. Enables the transition from design to detailed models while respecting both perspectives, following local code requirements, and automating the process of making changes so they are less disruptive to the design process.
  4. Increases transparency and quality of the model information being used from bidding to procurement by not only providing quantifiable information, but also enabling access to it in collaboration friendly environments.

I must say that it was great to hear your feedback from my last post, and see that so many of you are as excited by the future of concrete as I am! I’d like to continue the conversation I started with you, and spend some time discussing these four benefits and what they mean for the industry in depth. And by “in depth” I mean this in an engineering sense—I’m going to be thorough.

Since there’s A LOT to cover, instead of writing one long blog post on concrete that might bore you to sleep, I’m going to focus on one benefit at a time. For today, let’s talk about the benefits realized when moving from 2D to 3D.

Benefit #1: The BIM-centric concrete solution combines the versatility of 2D documentation with the higher level of fidelity and accuracy of 3D modeling of steel reinforcement and concrete accessories, with minimal effort to produce both.

We hear often that moving to 3D-based rebar design requires more work than traditional drafting. Many believe that creating a spatial representation of the engineer’s design intent and later installation reality is an extra step added to the effort related to drawings production. This is often followed by the complaint that obvious benefits of 3D (clash avoidance, accuracy, etc.) are for the benefit of general contractors rather than designers and detailers.

I want to challenge this.

While it’s true that 2D drawings, shop and lift drawings are still the primary deliverables nowadays serving as means of communication and instruction across broader teams, we’re also seeing these trends as well:

  • For communication, project teams across the are globe driving towards model-based communication and information handover, especially when it comes to the Design to Detailing transition. Customers like Norconsult are already using this approach effectively.
  • As a means of instruction, an undisputable benefit of traditional 2D detailing is the speed of drawings production and versatility. But the downside is the lack of precision leading to rebar clashes on site, compromises on quantities, and coordination with the formwork model.
  • Design changes also require drawings to be reproduced. The lack of consistency surfaces easily as drawings can be “adjusted” (“faked”, honestly speaking) and ultimately lose their connection to other sources of information like BOM, model data, IFC, ERP, etc.

Drawings and 3D rebar detailing in Revit

Let’s assume for a minute that by using a BIM-centric approach to rebar detailing we can still maintain a highly efficient and versatile process for drawing production, and incorporate the precision and information completeness that comes with 3D modeling at no additional cost. Well, that’s the idea for Revit.

For Revit we want to bring these two benefits of 2D to 3D together. How? This is where rebar detailers can leverage the traditional approach and perform 2D detailing “in canvas” of a section, plan or an elevation view taken directly from the concrete model, and have the rebar model created “for free” in the background. You can see this illustrated in this example:

Then, as the design/detailing evolves to a point where coordination is needed, detailers can focus on the rebar model editing directly and more comfortably in the 3D views. While in the 2D drawings space they can just easily add tags and dimensions to the rebar as a downstream part of the process since rebar is there, placed accurately, already.

What then makes a real difference is the accommodation of changes in the BIM process; there is no need to re-model or redraw rebar when that happens. The below example shows again how changes of concrete object sizes or rebar distribution parameters make all the rebar information adapt to changes and the submittals update instantly. Talk about a benefit for the detailers and designers!

A glimpse of the future

The ultimate proof of BIM-centric and fully model based reinforcement detailing efficiency can be recognized for projects dealing with complex concrete geometries such as water treatment stations, industrial structures, buildings with complex architecture, etc. Anywhere humans struggle to visualize the 3D structure in their minds when communicating instructions with only 2D drawings.

There are examples where using 2D drawings as layout instructions is nearly impossible. Check out this groundbreaking use case from Norconsult who is implementing a fully paperless process to construct this large hydro plant in Norway.

Additionally, use of these modern methods applied for complex projects is presented in a very interesting and recent master thesis from Pål Røe Larsen (Technical University of Denmark, Kongens Lyngby). Larsen’s thesis (you can download it here) includes several case studies and interviews with adopters from the industry, and draws attention to the new future of the concrete industry.

So, what do you think? Are you using a BIM-centric modeling approach for concrete yet? Are you seeing these benefits already? Stay tuned for more on this topic and let me know your thoughts in the comments.

For my next post, I’m going to talk about what I’ve described as benefit #2: allowing users to design and detail with clash prevention in mind to reduce clashes both in the preconstruction and site execution project phases.

The post BIM for reinforced concrete – From 2D to 3D for rebar detailing appeared first on BIM and Beam.



from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/05/31/2d-3d-rebar-detailing/
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Monday, 29 May 2017

DIFFERENT TYPES OF DEFECTS IN TIMBER

TYPES OF DEFECTS IN TIMBER Types of Defects in timber are grouped into the following divisions. 1. Defects due to conversion During the process of converting timber to commercial form, the following defects may occur. Chip mark: mark or sign placed by chip on finished surface of timber Diagonal grain: Due to improper sawing of […]

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from CivilBlog.Org http://civilblog.org/2017/05/30/different-types-defects-timber/
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PIG IRON, CAST IRON & WROUGHT IRON – WHAT’S THE DIFFERENCE?

1. Pig Iron The crude impure iron, which is extracted from iron ores, is known as pig-iron and it forms the basic material for the manufacture of cast-iron, wrought iron and steel. The pig iron is manufactured by the following operations (i) Dressing: Crushed into pieces 25mm, impurities of clay, loam and other earthy matter […]

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from CivilBlog.Org http://civilblog.org/2017/05/29/pig-iron-cast-iron-wrought-iron-whats-difference/
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Thursday, 25 May 2017

Revit for Structural Engineering

Revit allows structural engineers to create their models and documentation in an advanced BIM environment. By using Revit, structural designers and engineers can produce accurate design intent models and give engineers and detailers the information they need to develop models to a higher level of fidelity for Fabrication and Installation purposes.

Dynamo for Revit is a visual programming interface that allows engineers to use computational methods to design organic and optimized buildings and structures faster than with traditional modeling tools.
Dynamo allows users to create, associate and analyze multiple building parameters that revise their designs automatically. Engineers can then iterate and evaluate design options with ease, and build structures based on natural and mathematical principles.

Dynamo for Structural Engineering

Learn How to Use Dynamo to Generate Wind Loads in Revit

In Revit software, the physical model and the associated analytical model are created concurrently. The physical model of the structure is used for coordination as well as documentation. The analytical model is used for structural analysis and design. Structural loads, load combinations and boundary conditions can be easily added to the analytical model.

Through interoperability with Autodesk Robot Structural Analysis Professional, as well as various 3rd party analysis tools, Revit helps to extend BIM to structural Analysis.

Structural Analysis for Revit enables structural engineers to conduct analysis in the cloud as a part of the BIM process, and helps minimize disruptions to workflows as users continue to design as analysis is completed.
Performing cloud based analysis from within Revit with the Structural Analysis service helps to streamline the design process and provide analytical results early and often to inform design intent.

5 great features in Structural Analysis for Revit

Revit provides streamlined process from design through detailing to fabrication by supporting the easy modeling of steel connection details and 3D reinforcements.  For steel frames, Revit offers streamlined interoperability with Autodesk Advance Steel detailing software through Steel Connections for Revit. With over 130 parametric connections, Steel Connections for Revit allows engineers and detailers to coordinate more effectively by exchanging more accurate design deliverables for steel fabrication.  This results in more precise detailing, estimating, and reduces errors in fabrication and installation.

Learn What’s New in Revit 2018 for Steel Design

Revit also provides tools for detailers for modeling 3D concrete reinforcements, creation of shop drawings and bending schedules in the advanced BIM environment. It combines the versatility of 2D documentation with the higher level of fidelity and accuracy of 3D modeling for reinforcement and concrete accessories. What’s more, Revit allows users to design and detail reinforced concrete elements with clash prevention in mind to reduce clashes both in the preconstruction and during site execution.

Concrete Detailing in Revit

Learn What’s New in Revit 2018 for Concrete Detailing

By consolidating functionality around key workflows, Revit provides a higher level of automation to support enhanced collaboration among project stakeholders and allows teams to build better structures.


@tomekf

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from my Autodesk source Bim & Beam: BIM and Beam at http://blogs.autodesk.com/bim-and-beam/2017/05/25/revit-for-structural-engineering/
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