MyFloridaCode.com

Terry I agree with Glen, Unless there is another building within 1500
feet that has a gravel or tile roof 0-30 for large and 30-60 for small
is correct. All must still meet the wind pressure requirements
regardless of height. If there is another building within that distance
then you need to continue small missile till you are 30 feet above the
height of the other building.

Darius H Grimes CRC, CSI, CDT
Executive Director of Operations
SkyeTec
9570 Regency Sq Blvd Suite 410
Jacksonville, FL 32225
dgrimes at skyetec.com
Cell (904) 662-6707
 
Mitigation is.........the effort to reduce loss of life and property by
lessening the impact of disasters.

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From: codetalk-bounces at myfloridacode.com
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Sent: Tuesday, December 02, 2008 12:00 PM
To: codetalk at myfloridacode.com
Subject: CodeTalk Digest, Vol 40, Issue 2

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Today's Topics:

   1. Impact Windows on Hirise (Terrance Pitcher)
   2. Re: Anchoring Transformers (Glen Mast)
   3. Re: Impact Windows on Hirise (Glen Mast)
   4. Some info you may find useful (Wade Mullins)
   5. Re: Anchoring Transformers (Ken Rodgers)


----------------------------------------------------------------------

Message: 1
Date: Mon, 1 Dec 2008 20:49:28 -0500
From: "Terrance Pitcher" <ppitcher at cfl.rr.com>
Subject: [Florida Code Talk] Impact Windows on Hirise
To: <codetalk at myfloridacode.com>
Message-ID: <003301c95420$39be9dd0$0400a8c0 at D15WQ211>
Content-Type: text/plain; charset="iso-8859-1"

I was to understand that the requirement for laminated windows on tall
condos is such. 0 to 30 ft large impact. 30ft to 60ft small impact
glass. Above 60ft  I assumed you did not need impact laminated glass.
These buildings are not if the HVHZ. They are on the barrier islands of
north east fl. 120 mph zone. Above 60ft I have used 1/4 tempered glass.
I pull a permit on all jobs and have passed all inspections. But today
the inspector thought that the whole building needs to be impact if over
60ft.
Thanking all of you in advance
Terry
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Message: 2
Date: Tue, 2 Dec 2008 00:27:20 -0500
From: "Glen Mast" <glenmast at comcast.net>
Subject: Re: [Florida Code Talk] Anchoring Transformers
To: "Ken Rodgers" <Ken at artisanbilt.com>, <codetalk at myfloridacode.com>
Message-ID: <1573ADF55FE64CA1BD37E7A4D131B9BE at glens>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
	reply-type=original

Lets actually look at 150mph, Exposure "C", wind loads on a transformer
that is 4'x4'x30'' tall.

ASCE7-02 would treat this transformer like a solid sign or a fencewall.
With an importance factor of 1.0 the lateral wind pressure would be 48.6
psf.
48.6 x 4 x 2.5 = 486#

If the transformer weighs 2000# and the sliding coefficient is .4 (I
don't have my ACI book here but I think that is close) then the friction
provides 800# resistance.
ASCE7 doesn't assign uplift to the tops of signs but just for arguments
sake lets assign 45psf.
45 x 4'x4' = 720# uplift
2000 - 720 = 1280#
1280 x .4 = 512# resistance


 So if your in Dade-Broward you might be able to make an argument for it
but anyplace else it appears the power company has a valid point..

glen mast
.


----- Original Message -----
From: "Ken Rodgers" <Ken at artisanbilt.com>
To: <codetalk at myfloridacode.com>
Sent: Sunday, November 30, 2008 8:09 PM
Subject: [Florida Code Talk] Anchoring Transformers


> Hello All,
>
>  I have a question about securing the large transformers (large green
> boxes) to the slab they sit on.  The power company says it does not
bolt
> these to the slab even though the box  does have bolt flanges at the 
> bottom
> for bolting.  I'm trying to find something (code or otherwise) that
states
> the requirement to actually use the supplied bolt holes to secure the
> transformer to the slab.  The power company just says that because it 
> weighs
> 2,000 lbs it's not going anywhere and thus they don't bolt it.  I
guess
> using that rationale then we don't need to bolt houses down to the
> foundation.  Any info would be greatly appreciated.
>
>
>
> Ken
>
>
>
> Ken Rodgers
>
> ArtisanBilt Construction
>
>
>
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------------------------------

Message: 3
Date: Tue, 2 Dec 2008 00:44:17 -0500
From: "Glen Mast" <glenmast at comcast.net>
Subject: Re: [Florida Code Talk] Impact Windows on Hirise
To: "Terrance Pitcher" <ppitcher at cfl.rr.com>,
	<codetalk at myfloridacode.com>
Message-ID: <461F87A54BE34E6F93B010FE0A323370 at glens>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
	reply-type=original

You are correct with one possible exception.  If there is another tall 
building nearby that has a gravel roof or tile roof then you may have to

protect windows to a higher level.  (at least that is my understanding)

glen mast


----- Original Message ----- 
From: "Terrance Pitcher" <ppitcher at cfl.rr.com>
To: <codetalk at myfloridacode.com>
Sent: Monday, December 01, 2008 8:49 PM
Subject: [Florida Code Talk] Impact Windows on Hirise


>I was to understand that the requirement for laminated windows on tall 
>condos is such. 0 to 30 ft large impact. 30ft to 60ft small impact
glass. 
>Above 60ft  I assumed you did not need impact laminated glass. These 
>buildings are not if the HVHZ. They are on the barrier islands of north

>east fl. 120 mph zone. Above 60ft I have used 1/4 tempered glass. I
pull a 
>permit on all jobs and have passed all inspections. But today the
inspector 
>thought that the whole building needs to be impact if over 60ft.
> Thanking all of you in advance
> Terry
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------------------------------

Message: 4
Date: Tue, 2 Dec 2008 07:47:33 -0500
From: "Wade Mullins" <wadem at qualityprecast.com>
Subject: [Florida Code Talk] Some info you may find useful
To: <codetalk at myfloridacode.com>
Message-ID:
	
<6FCB0E1A41983D4B986EBAE690935450E8608B at qpfile01.qualityprecast.lan>
Content-Type: text/plain; charset="us-ascii"

 

 

Wade Mullins

Quality Precast Company

wadem at qualityprecast.com

R & R Rebar Fabricators, Inc.

wadem at rrrebar.com

Direct 813.662.5260

Mobile 813.267.8736

<mailto:wadem at qualityprecast.com>  

 

<mailto:wadem at rrrebar.com>  

 

<mailto:wadem at rrrebar.com>  

 

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Message: 5
Date: Tue, 2 Dec 2008 07:12:37 -0600
From: "Ken Rodgers" <Ken at artisanbilt.com>
Subject: Re: [Florida Code Talk] Anchoring Transformers
To: "'Glen Mast'" <glenmast at comcast.net>, <codetalk at myfloridacode.com>
Message-ID: <007101c9547f$a7019b90$f504d2b0$@com>
Content-Type: text/plain;	charset="us-ascii"

These transformers are about 6 feet tall, not 30 inches.  I appreciate
the
math lesson but I believe there are probably other things to consider
besides wind that have the ability to move a transformer.

Thanks to everyone for their inputs.  I'll press on the with info I've
received.

Ken

-----Original Message-----
From: Glen Mast [mailto:glenmast at comcast.net] 
Sent: Monday, December 01, 2008 11:27 PM
To: Ken Rodgers; codetalk at myfloridacode.com
Subject: Re: [Florida Code Talk] Anchoring Transformers

Lets actually look at 150mph, Exposure "C", wind loads on a transformer
that

is 4'x4'x30'' tall.

ASCE7-02 would treat this transformer like a solid sign or a fencewall.
With an importance factor of 1.0 the lateral wind pressure would be 48.6

psf.
48.6 x 4 x 2.5 = 486#

If the transformer weighs 2000# and the sliding coefficient is .4 (I
don't 
have my ACI book here but I think that is close) then the friction
provides 
800# resistance.
ASCE7 doesn't assign uplift to the tops of signs but just for arguments
sake

lets assign 45psf.
45 x 4'x4' = 720# uplift
2000 - 720 = 1280#
1280 x .4 = 512# resistance


 So if your in Dade-Broward you might be able to make an argument for it
but

anyplace else it appears the power company has a valid point..

glen mast
.


----- Original Message ----- 
From: "Ken Rodgers" <Ken at artisanbilt.com>
To: <codetalk at myfloridacode.com>
Sent: Sunday, November 30, 2008 8:09 PM
Subject: [Florida Code Talk] Anchoring Transformers


> Hello All,
>
>  I have a question about securing the large transformers (large green
> boxes) to the slab they sit on.  The power company says it does not
bolt
> these to the slab even though the box  does have bolt flanges at the 
> bottom
> for bolting.  I'm trying to find something (code or otherwise) that
states
> the requirement to actually use the supplied bolt holes to secure the
> transformer to the slab.  The power company just says that because it 
> weighs
> 2,000 lbs it's not going anywhere and thus they don't bolt it.  I
guess
> using that rationale then we don't need to bolt houses down to the
> foundation.  Any info would be greatly appreciated.
>
>
>
> Ken
>
>
>
> Ken Rodgers
>
> ArtisanBilt Construction
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: 
>
http://myfloridacode.com/pipermail/codetalk/attachments/20081130/5216cb8
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tachment.html
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> CodeTalk mailing list
> CodeTalk at myfloridacode.com
> Unsubscribe or change your options at:
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