Building Movement Issues in Curtain Wall for Glazing Contractors and Engineers

Stewart Jeske, PE warns glazing contractors and architects about building movement issues in curtain wall caused by code requirements in the glass and glazing industry.
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[@jeboccuzzi10]

Great video

[@user-ov4dw3yr5d]

Thanks Man!

[@MichaelBrown-zs6xc]

Nice job Stewart. Your video has good information.
In addition, there can be a benefit to collaborating with the EOR regarding building movement anticipated "after" a framing system is installed. In some cases, this results in lesser movement than the amount shown in a project's contract documents.

[@JEIstructural]

Totally agree. That’s exactly what we love to facilitate for our clients.

[@gokhangokdeniz482]

What if deflection/slip track installed for the building movement and beneath storefront installed? can we consider less movement at the head. Thank you

[@JEIstructural]

If deflection slip tracks are included in the wall structure (cold form steel) then the glazing system does not have to accommodate building structural movement. Thanks for asking

[@JEIstructural]

This is not usually the case for long STOREFRONT runs.

[@geeorge]

is there a test regime to assess the watertightness of that joint when deflection occurs?

[@JEIstructural]

There is common curtain wall water pressure testing that may be done to assess water tightness and leakage.

[@coleharris1772]

You show a calculated movement of live load and thermal to be 1.45". It looks like you are saying that is the required joint size but the joint needs to be double the movement so it would actually be about a 3" head joint. Correct?

[@JEIstructural]

YES. You’re absolutely right. Sealant can only be squeezed to about 50% of its height dimension before it ruptures.

[@moolavaadventure705]

Do you have formula to compute the Shimming Thickness . Applied from back of the bracket and Faca of the Slab ? Thank you

[@JEIstructural]

Please elaborate. I’m not sure we understand the question.

[@MulughetaHailu]

thank you for this important video, is there any pdf or ppt file of this video

[@JEIstructural]

Not yet