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Archive for February, 2020

Using 3D models in the Design-Assist Process

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Using 3D Models in the Design-Assist Process

Utilizing your 3D resources during the design-assist process is an excellent way to foster communication among your team. Design-assist directly involves the architect, contractor, and subcontractors in the design process.

This process will require the discussion and investigation of different product types, their functionality, and modifications that may be required to properly execute the design intent. Communicating these items and details to the team is key to the success of the project. If you can offer 3D details and drawings in addition to the typical hand sketches and 2D CAD drawings, the process will be that much more effective and efficient.*

Here are four examples displaying the capacity to create 3D drawings aided in the design-assist process.

3D Details are Faster than Actual Samples

The detail below was provided to the design team in lieu of sending an actual sample of a window insert into the curtain wall system. Not only did the glazing contractor have the ability to ask questions based upon this detail, but it was created in a matter of hours. Instead of the time it would take to source sample material, fabricate, and deliver it to the project team.

3D Drawings Show Complicated Geometry Well

Complex systems and geometry benefit from 3D drawings. This is especially true when the designer wants to see the proposed hardware in action.The image below was created to show the proposed joint spacing of this glass guardrail, along with the handrail bracket type and locations. The initial drawings provided by the architect did not have any of this information, and the glazing contractor was able to quickly show what they were proposing, in clear detail. The joints and hardware shown below not only met the project criteria, but the 3D model also benefited the glazier’s installation team.

Software can Offer Upfront Clash Detection and Full Building Modeling

This example shows not only a single detail, but multiple systems and how they react. It looks like a full BIM drawing; however, in this case the design-assist team wanted to see anchor placement for the curtain wall system, as well as mullion and horizontal locations in relation to the internal structure. This example also took things a step further, as the team utilized crash detection software to see if any major issues arose that needed to be reviewed. Further on in the project, full BIM coordination was performed as well, but this area was analyzed during the design phases to make crucial system choices that were translated to the entire project.

3D Models Show Variations in Design Options

We have used our 3D capabilities to show various design options on many different projects. This is especially true when we see a condition such as the example below, where the original design of the corner and knee wall interaction did not work. This project required either a return and extension of the concrete knee wall or removal of part of that knee wall in order for the corner to function correctly. The easiest and most effective way to show the two options of resolution was to 3D model each and have the design team agree on the most desireable one. In this case the concrete contractor was also consulted, and they provided input as well, based upon the details.

The above four examples are items we see on projects on a regular basis, but there are many other areas where 3D modeling can be helpful. Before you consider using 3D models and tools, talk to your colleagues and ask them where they have had trouble communicating a detail or design change where a 3D model would have been beneficial. Talk to your internal drafting team and/or your preferred outsourcing option and find out their capabilities, timelines for 3D details, and if they have experience with design-assist projects. If you are able to utilize it, 3D modeling has the potential to help you design and communicate more clearly, quickly, and efficiently.

*In terms of software, the team at MP Drafting (www.mpdrafting.com) utilizes mainly AutoCAD for its 3D drawings; however, they also use Inventor, Revit, and Fusion 360 when appropriate. While these programs are the most popular, there are other options that may also be beneficial and worth the time to investigate.

Free Course, Transporting Fabricated Frames

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Lesson One

In this course we are discussing different shipping methods to consider for transporting your fabricated products to the jobsite. This short course is a companion to our Different Levels of Fabrication & Assembly course, for storefront and curtain wall systems.

Shipping and transportation is something that needs to be reviewed and discussed during bid time to ensure that appropriate costs are covered. Especially when special vehicles, trailers, dunnage, etc. are required to safely get your framing to the jobsite.

There are many different ways to transport your frames down the road, and many shops have specialized processes which are born from lessons learned the hard way. If you have a unique method, or piece of equipment, to get your frames around, we’d love to see it! Share with us at holly@learnglazing.com.

This image of an old school rack truck shows that not much has changed over the years. Most glass shops will use these trucks to transport framing, as well as glass.

Lesson Two

When transporting your framing, keep in mind you need protection in the following areas: between frames, between straps and frames, and between frames and truck / trailer.

Common materials that are used for protection include: gasket material, foam pads (as found on glass panels), cardboard, stretch wrap cardboard, foam cardboard, and lumber (with protective layer). Keep in mind that these materials used for transporting can also be used at the jobsite for storing frames.

This image shows palletized curtain wall horizontals. They have spacers between each layer, stretch wrap, and strapping to keep everything tight and protected during transportation. This project had a lot of similar sized parts that worked well to bundle them together.

Lesson Three

Pictures are worth a thousand words, and the following images show common methods of packaging, and shipping options.

Crating, as shown in image A, is a great way to transport frames, especially when lifting equipment is available at both the shop and jobsite. The crates serve to protect the frames when being stored onsite as well.

Image B shows the space available between the glass racks on a larger rack truck.

A

Lesson Four

If you look at image C, you’ll see an enclosed trailer with stick-built curtain wall framing (ladders) and loose components. The gasket material that is installed on the tongue of the mullions acts as a spacer between the strapped frames. Note the cardboard between the straps and material as well.

Image D shows a curtain wall system that has been KD fabricated and ready for the field crew to assemble the frames onsite.

Lesson Five

Looking at image C, we have an enclosed semi trailer and framing being loaded. This picture was taken mid process, as all of the frames and loose components have not yet been secured entirely.

This project, image D, is a great example of utilizing an open top flatbed semi truck. The horizontals were palletized and loaded at the front of the trailer, the verticals stacked together in the middle, and bundled components at the back. Note the typical vertical mullions lend themselves well for transporting with the shear blocks interfacing with each other, and keep the mullions separated.

Discussion Points

  1. Does your company have trucks to transport frames / glass? If so, what do you use?
  2. What materials work best for your shop, in the protection of fabricated frames / pieces during transportation? Do you have a specific way of loading the materials into your truck?

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