Urgent- Seismic/racking Displacement value for Curtain wall

Arbu · Aug 10, 2018

Dear All,

I am designing a Curtain wall (Mullion and Transom system) . Contractor has to do mock up testing for curtain wall. Now testing company asking Seismic/racking Displacement value for Curtain wall. as per project specification its return only 3.5 Cycles for horizontal racking . SO what should I reply to testing person. Shall I need to give him allowable drift limit with No of cycles . Please comment this is first time for me in facade and curtain wall system. please share if some one is having racking test materiel.

SIgmaEngg

wannabeSE · Aug 12, 2018

Sounds like you need to get the drift criteria from the engineer of record. Alternatively, you may be able to use the maximum allowable in ASCE 7 (or whatever code governs the seismic design). If you are designing a curtain wall with ASCE 7-10, see section 13.5.9 for additional requirements.

dik · Aug 12, 2018

While the testing is ongoing... should do a smoke test, too, and find out if it's leaking.

Dik

NorthCivil · Aug 12, 2018

Engineer of record will have to supply the drift in mm at the location the curtainwall is fixed.

dik - if they are running seismic racking tests, they are certainly doing water tests. not sure what you mean by a smoke test.

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Urgent- Seismic/racking Displacement value for Curtain wall

Arbu

Structural

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wannabeSE

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dik

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