https://www.proz.com/kudoz/english/construction-civil-engineering/753624-i-60-wind-uplift.html

I-60 wind uplift

English translation: telegraphic!

22:24 Jul 2, 2004
English language (monolingual) [PRO]
Tech/Engineering - Construction / Civil Engineering
English term or phrase: I-60 wind uplift
What could it be?

"XXX recommends using an insulation board that provides the stability and an I-60 wind uplift."

Roof:
Perm-A-Barrier WB Primer is slippery when wet. Allow the primer to dry thoroughly before walking on the insulation surface. Dust free, smooth insulation facers, such as foil asphalt impregnated glass scrims and some of the papers, provide the best initial adhesion. The choice of the insulation board or use of a primer is the responsibility of the specifiers. XXX recommends using an insulation board that provides the stability and an I-60 wind uplift.
Barbara Piela
Local time: 13:22
Selected answer:telegraphic!
Explanation:
I-60 is a standard of RESISTANCE to wind uplift, i.e. the pull exerted on a roof by a wind moving across it.

Could also be phrased "that provides the NECESSARY stability and an I-60 wind uplift GRADING / RATING."


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Note added at 22 hrs 15 mins (2004-07-03 20:39:58 GMT)
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I don\'t know what \"I-60\" refers to exactly, nor does it matter. I doubt it refers to a roof pitch of 60°, but rather to some unit of measurement of the suctional force exerted by wind.


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Note added at 22 hrs 19 mins (2004-07-03 20:43:48 GMT)
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Got it!
<<There are two common misconceptions associated with the FM [Factory Mutual (Factory Mutual Engineering Corp)] wind-uplift classifications. The first involves the number 1: The classification denotation is the numeral “1,” not the letter “I” as it is frequently referred to. Therefore, the correct pronunciation is FM Class 1-60 not FM I-60.

The second misconception is what the uplift classes actually mean. The common misconception is that Class 1-60 can withstand 60-mile an hour wind speeds. This is incorrect. The determination is actually based on pounds per square foot of pressure that the system can withstand. This is determined during testing procedures. In this process, the complete roof system — including the deck — is secured to the frame of the wind-uplift test apparatus. During the test procedure, compressed air is slowly introduced below the deck in increments of 15 psf. If the sample maintains 60 psf for one minute without damage, it is classified as Class 1-60. The same procedure applies for Class 1-90, which must maintain 90 psf for one minute and Class 1-120, which must maintain 120 psf for one minute. >>

Selected response from:

Bourth (X)
Local time: 13:22
Grading comment
Thanks a lot!
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
5 +1telegraphic!
Bourth (X)


Discussion entries: 1





  

Answers


1 hr   confidence: Answerer confidence 5/5 peer agreement (net): +1
i-60 wind uplift
telegraphic!


Explanation:
I-60 is a standard of RESISTANCE to wind uplift, i.e. the pull exerted on a roof by a wind moving across it.

Could also be phrased "that provides the NECESSARY stability and an I-60 wind uplift GRADING / RATING."


--------------------------------------------------
Note added at 22 hrs 15 mins (2004-07-03 20:39:58 GMT)
--------------------------------------------------

I don\'t know what \"I-60\" refers to exactly, nor does it matter. I doubt it refers to a roof pitch of 60°, but rather to some unit of measurement of the suctional force exerted by wind.


--------------------------------------------------
Note added at 22 hrs 19 mins (2004-07-03 20:43:48 GMT)
--------------------------------------------------

Got it!
<<There are two common misconceptions associated with the FM [Factory Mutual (Factory Mutual Engineering Corp)] wind-uplift classifications. The first involves the number 1: The classification denotation is the numeral “1,” not the letter “I” as it is frequently referred to. Therefore, the correct pronunciation is FM Class 1-60 not FM I-60.

The second misconception is what the uplift classes actually mean. The common misconception is that Class 1-60 can withstand 60-mile an hour wind speeds. This is incorrect. The determination is actually based on pounds per square foot of pressure that the system can withstand. This is determined during testing procedures. In this process, the complete roof system — including the deck — is secured to the frame of the wind-uplift test apparatus. During the test procedure, compressed air is slowly introduced below the deck in increments of 15 psf. If the sample maintains 60 psf for one minute without damage, it is classified as Class 1-60. The same procedure applies for Class 1-90, which must maintain 90 psf for one minute and Class 1-120, which must maintain 120 psf for one minute. >>



Bourth (X)
Local time: 13:22
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 12
Grading comment
Thanks a lot!

Peer comments on this answer (and responses from the answerer)
agree  ggrozoma: http://www.upstateroofing.com/dictionary/usr_dictionary_main... FM wind uplift rating. Indicates that a roof assembly can withstand as much as 60 pounds per square foot of upward live load; this means it is resistant to winds of up to 88 miles per hour.
22 hrs
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