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ASTM C 636
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Re: ASTM C 636 By  Codeflo

Posts: 0

10/16/2003 8:30:00 AM

Is your project in a seismic zone ( 3-4) of the Cisca standard?

------------------
Codeflo
2000 IBC/IMC/IPC/IFC/IFGC
ICC/ ANSI A117.1-98 ed. 2002 NEC
" Just my $.02 worth"


   

Re: ASTM C 636 By  ba109

Posts: 0

10/16/2003 11:37:00 AM

This is Wisconsin. The only thing that shakes around here is Lambeau Field during a Packer game.

Seismic Design Category A
Seismic Use Group I

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ba109 (WI)
2000 IBC, IMC, IFGC, ICC/ANSI A117.1-1998


   

Re: ASTM C 636 By  ba109

Posts: 0

10/16/2003 3:58:00 PM

[QUOTE]Does anyone have an online copy of ASTM C 636? [/QUOTE] No one? [IMG]http://www.iccsafe.org/ubb/confused.gif[/IMG] [IMG]http://www.iccsafe.org/ubb/frown.gif[/IMG]

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ba109 (WI)
2000 IBC, IMC, IFGC, ICC/ANSI A117.1-1998


   

Re: ASTM C 636 By  wkh

Posts: 0

10/17/2003 6:42:00 AM

OK I''ll bite.
C636-96 does not specifically address slab on metal deck installations. What are they doing. Are they using a carying channel or are they shooting individual straps/wires?

Potential concerns:
-does this affect fireproofing if any?
-is fastener suitable for this type of install? (i.e. a shot-in conctete fastener might not be apropriate to additionally penetrate the steel decking)

This happens all the time here in vegas. Straps/wires/channels are fastened to the underside of steel deck prior to concrete and fireproofing. This is also sometimes done with lighter ductwork.


   

Re: ASTM C 636 By  ba109

Posts: 0

10/17/2003 10:58:00 AM

wkh,

Thanks for the reply. They are shooting individual wires through the steel deck into the concrete.

My concern is that the floor system is not designed to carry a bottom load. The ceiling should be hung from the bar joists.

I''m just looking for a reference that says that in black and white. Maybe there is none.



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ba109 (WI)
2000 IBC, IMC, IFGC, ICC/ANSI A117.1-1998


   

Re: ASTM C 636 By  pwood

Posts: 0

10/17/2003 11:05:00 AM

BAA!
i would think this would be the engineer"s call. the extra dead/live loads should be accounted for in the structural calcs.


   

Re: ASTM C 636 By  wkh

Posts: 0

10/17/2003 1:15:00 PM

Composite decks have alot of capacity. It is my personal opinion that the load would be easily accomodated in the deck. But pwood is right, the designer of record should be consulted when such concerns arise. Out of curiosity which hilti fastener are they using. I wasn''t aware hilti had a product to be used in such a configuration.


   

Re: ASTM C 636 By  maniac

Posts: 0

10/17/2003 1:22:00 PM

C636-96 Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels Copyright 2003 ASTM International. All rights reserved.
Order Now:
(Credit Card Only)
ACTIVE STANDARD:
Download (PDF)
Price: $ 25.00
Pages: 4 [URL=http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/REDLINE_PAGES/C636.htm?E+mystore]http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/REDLINE_PAGES/C636.htm?E+mystore[/URL]


[This message has been edited by maniac (edited 10-17-2003).]


   

Re: ASTM C 636 By  ba109

Posts: 0

10/17/2003 6:21:00 PM

wkh,

The hanger is similar to those at this link. [URL=http://www.us.hilti.com/holus/modules/prcat/prca_fuse.jsp?RANGE_OID=12540]http://www.us.hilti.com/holus/modules/prcat/prca_fuse.jsp?RANGE_OID=12540[/URL] They are shot from a typical Hilti "gun" with an extension arm.

maniac, Thanks for the link. I was hoping that one of the designers or engineers here might already have a copy that they could quote a quick reference from.

I have a call in to the architect. I''ll leave it in his hands.

Thanks all.

------------------
ba109 (WI)
2000 IBC, IMC, IFGC, ICC/ANSI A117.1-1998


   

Re: ASTM C 636 By  Lisa

Posts: 0

7/31/2008 12:02:00 AM

I want to make a code addoption for suspended ceilings so all will have the same venue. I know the the manufatures sell their products but the consumer pay''s the bill I would like the IBC to have installation practice in the body of the code section IBC 803 i would like some help in writing this code change


   

Re: ASTM C 636 By  Builder bob

Posts: 0

7/31/2008 6:02:00 AM

At one time ( 2000 IBC) contained alot of information in relation to IBC section 1621. However, the people ASCE and ICC had a mild discussion and ASCE did not like the fact that ICC was presenting information in the cheap code book that was referenced by the IBC to their their book - ASCE - 7.


   

Re: ASTM C 636 By  rj2085

Posts: 0

7/31/2008 6:18:00 AM

BB: Noooooo! you don''t say!


   

Re: ASTM C 636 By  timNY

Posts: 0

7/31/2008 6:42:00 AM

The clips are definitely listed for this type of installation (I love seeing Hilti on the jobs, because there is always tech data available).

The question is whether or not the slab is designed to support the load.

As the slabs are engineered, the only person who can answer your question is the engineer of record.

Personally, I wouldn''t have even thought twice about it (assuming a normal lay-in ceiling.. not a suspended drywall ceiling with 2 layers of 5/8). You could call the engineer yourself or ask the applicant to furnish a letter. That''s the only way to get an answer.

Tim


   

Re: ASTM C 636 By  Paul Sweet

Posts: 0

7/31/2008 9:59:00 AM

IBC 1607 requires floor slabs to suport a concentrated load of 1000 lb. or more in most occupancies. A ceiling hanger wire supports only 20 to 30 lb. I don''t see a problem with a floor deck. A roof deck might be another matter.


   

Re: ASTM C 636 By  alomu

Posts: 0

7/31/2008 10:37:00 AM

If you have a copy of the Project Manual, you could look under Division 9 for Acoustical Ceilings and see what the architect says about the installation.

Depending upon on how, and where, the wires are attached to the decking, it may be allowed on a floor slab. However, the architect would not allow it to be attached to the typical metal roof deck.

I agree with your earlier post, let the architect advise you.

How are they handling seismic struts?


   

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