RE: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-11 Thread Reimer, Paul 
Had you considered an AP with an integrated antenna?

An Aruba AP277, for instance, is directional and outdoor rated so all you need 
to get to it is your network cable. There are other models available from other 
vendors, obviously.

Also as I see it you can install the base of the stand flat on your roof 
surface and replace the river rock over it or put together some kind of 
platform that will sit on top of it. The platform might be better from an 
insurance/building code standpoint.

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mattson, III, Ken V
Sent: Wednesday, August 10, 2016 6:53 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

We plan on using this pad:
http://www.cableandwireshop.com/protective-rubber-mat-layer-for-non-penetrating-antenna-roof-mount.html

If there is a layer of river rock covering the roof membrane, do you clear 
those away first before putting down the mat and mast base?

According to the Cisco documentation the antenna and AP we are using are 
designed for outdoor use. We use this AP/Antenna combination quite a bit across 
campus so we have the practice at protecting them. The rest have all been wall 
mounted, this is our first roof mount. We are only doing the roof mount because 
the area we want to cover doesn’t have any suitable walls for an AP or antenna. 
Our facilities group also doesn’t like roof penetrations so the cabling for it 
will come through the wall just below the roof and the up and over to the 
AP/Antenna or the AP will stay inside and only the antenna cables will come out 
and up. We are trying to determine how long the antenna cables will have to be 
and if it makes sense to get them or just mount the AP to the mast lower down.

Thanks for all of the helpful input so far.

Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Craig Eyre
Sent: Tuesday, August 09, 2016 9:04 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Subject: Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

We use those mounts on all our installs with a rubber mat underneath and 4 
cinder blocks holding it down and they don't move at all. I agree with the 
other comments of lightning arrestors, power protection, appropriate weather 
prevention for cabling coming through the ceiling. We don't run fiber to ours 
but that's another good idea.

The only question I have is that antenna outdoor nema rated?


Craig Eyre

On Mon, Aug 8, 2016 at 4:30 PM, Mattson, III, Ken V 
<kenmatt...@creighton.edu<mailto:kenmatt...@creighton.edu>> wrote:
Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share?  How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this:
http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html

Any gotchas we should be aware of?

Thanks for any assistance,

Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.



--
Craig Eyre
Network Analyst
IT Services Department
Mount Royal University
4825 Mount Royal Gate SW
Calgary AB T2P 3T5

P. 403.440.5199
E. ce...@mtroyal.ca<mailto:ce...@mtroyal.ca>

"The difference between a successful person and others is not a lack of 
strength, not a lack of knowledge, but rather in a lack of will." Vincent T. 
Lombardi"

MRU IT Services will NEVER ask you for your password or to update or verify 
your email account through an email. DO NOT click any links in an email asking 
you to update or verify your email account.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.

**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

RE: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-10 Thread Mattson, III, Ken V 
We plan on using this pad:
http://www.cableandwireshop.com/protective-rubber-mat-layer-for-non-penetrating-antenna-roof-mount.html

If there is a layer of river rock covering the roof membrane, do you clear 
those away first before putting down the mat and mast base?

According to the Cisco documentation the antenna and AP we are using are 
designed for outdoor use. We use this AP/Antenna combination quite a bit across 
campus so we have the practice at protecting them. The rest have all been wall 
mounted, this is our first roof mount. We are only doing the roof mount because 
the area we want to cover doesn’t have any suitable walls for an AP or antenna. 
Our facilities group also doesn’t like roof penetrations so the cabling for it 
will come through the wall just below the roof and the up and over to the 
AP/Antenna or the AP will stay inside and only the antenna cables will come out 
and up. We are trying to determine how long the antenna cables will have to be 
and if it makes sense to get them or just mount the AP to the mast lower down.

Thanks for all of the helpful input so far.

Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Craig Eyre
Sent: Tuesday, August 09, 2016 9:04 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

We use those mounts on all our installs with a rubber mat underneath and 4 
cinder blocks holding it down and they don't move at all. I agree with the 
other comments of lightning arrestors, power protection, appropriate weather 
prevention for cabling coming through the ceiling. We don't run fiber to ours 
but that's another good idea.

The only question I have is that antenna outdoor nema rated?


Craig Eyre

On Mon, Aug 8, 2016 at 4:30 PM, Mattson, III, Ken V 
<kenmatt...@creighton.edu<mailto:kenmatt...@creighton.edu>> wrote:
Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share?  How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this:
http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html

Any gotchas we should be aware of?

Thanks for any assistance,

Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.



--
Craig Eyre
Network Analyst
IT Services Department
Mount Royal University
4825 Mount Royal Gate SW
Calgary AB T2P 3T5

P. 403.440.5199
E. ce...@mtroyal.ca<mailto:ce...@mtroyal.ca>

"The difference between a successful person and others is not a lack of 
strength, not a lack of knowledge, but rather in a lack of will." Vincent T. 
Lombardi"

MRU IT Services will NEVER ask you for your password or to update or verify 
your email account through an email. DO NOT click any links in an email asking 
you to update or verify your email account.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.

**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-09 Thread Jeffrey D. Sessler 
I would consult with your facilities, and more specifically a qualified 
engineer that can do the load calculations, grounding requirements, check local 
code, then sign-off on the install. In today litigious environment, and 
depending on local code, it may be unwise to have unsecured ballast and/or if 
not a temp install (couple of days) an antenna that’s not permanently secured 
to the structure.

Jeff

From: "wireless-lan@listserv.educause.edu"  
on behalf of "Mattson, III, Ken V" 
Reply-To: "wireless-lan@listserv.educause.edu" 

Date: Monday, August 8, 2016 at 3:30 PM
To: "wireless-lan@listserv.educause.edu" 
Subject: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share?  How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this:
http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html

Any gotchas we should be aware of?

Thanks for any assistance,

Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.

**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

RE: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-09 Thread Chuck Enfield 
If you’re lucky enough to have good attachment points in the right locations 
you could guy the antenna instead of using ballast.  This results in a more 
stable installation and lighter roof loading.  It rarely works out, but you 
could get lucky.



Definitely use a pad under the mount.  This isn’t for anti-skid purposes. 
It protects the roof membrane from the mount and any falling ballast should 
the mount tip over.



I also tether the mount so that it stays put.  Come from two nearly-opposite 
directions and leave just enough slack that the antenna can fall over, but 
can’t move around much from there.  You don’t want it damaging anything on 
the roof, or worse, flying off of the roof.



Chuck



From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mattson, III, Ken V
Sent: Monday, August 08, 2016 6:30 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna



Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share?  How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this:

http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html



Any gotchas we should be aware of?



Thanks for any assistance,



Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.

** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/.


**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-09 Thread Craig Eyre 
We use those mounts on all our installs with a rubber mat underneath and 4
cinder blocks holding it down and they don't move at all. I agree with the
other comments of lightning arrestors, power protection, appropriate
weather prevention for cabling coming through the ceiling. We don't run
fiber to ours but that's another good idea.

The only question I have is that antenna outdoor nema rated?


Craig Eyre

On Mon, Aug 8, 2016 at 4:30 PM, Mattson, III, Ken V <
kenmatt...@creighton.edu> wrote:

> Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures
> of the installation that you could share?  How high did you mount it? How
> much weight did you put on the base? We plan on putting it as high at 8-10
> ft. on something like this:
>
> http://www.cableandwireshop.com/non-penetrating-roof-
> mount-with-166-x-120-mast.html
>
>
>
> Any gotchas we should be aware of?
>
>
>
> Thanks for any assistance,
>
>
>
> Kenneth V. Mattson III
> Director - Network and Data
> DoIT
> Creighton University
> 402-280-2743
> 402-981-1140
>
> A password is like a toothbrush:
> Choose a good one, change it regularly and don't share it.
> ** Participation and subscription information for this EDUCAUSE
> Constituent Group discussion list can be found at http://www.educause.edu/
> groups/.
>
>


-- 
Craig Eyre
Network Analyst
IT Services Department
Mount Royal University
4825 Mount Royal Gate SW
Calgary AB T2P 3T5

P. 403.440.5199
E. ce...@mtroyal.ca

"The difference between a successful person and others is not a lack of
strength, not a lack of knowledge, but rather in a lack of will." Vincent
T. Lombardi"

MRU IT Services will NEVER ask you for your password or to update or verify
your email account through an email. DO NOT click any links in an email
asking you to update or verify your email account.

**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-09 Thread Reynolds, David K. 
I would also recommend using a rubber barrier non-slip matt under the mount, 
I’m assuming your ballast will be concrete blocks this will also be more 
forgiving to the roof surface too .


David Reynolds
Information Services - Network Operations
Wireless Network Support Specialist
Quinnipiac University
Desk: 203 582 5289 / Cell: 203 889 8135


[http://content.sportslogos.net/logos/33/810/thumbs/ew01aoekmcrrx0us00rsrcww6.gif]
<http://www.sportslogos.net/logos/list_by_team/810/Quinnipiac_Bobcats>

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of "McClintic, Thomas" 
<thomas.mcclin...@uth.tmc.edu<mailto:thomas.mcclin...@uth.tmc.edu>>
Reply-To: The EDUCAUSE Wireless Issues Constituent Group Listserv 
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Date: Tuesday, August 9, 2016 at 9:34 AM
To: The EDUCAUSE Wireless Issues Constituent Group Listserv 
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

Those sled mounts are great and the antenna you are looking at has very little 
wind resistance. I would suggest using fiber if able and take Sam’s points to 
heart as well. Proper sealing and grounding will keep your install working for 
years instead of months.

TJ McClintic


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Samuel Clements
Sent: Tuesday, August 9, 2016 8:18 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Subject: Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

And of course you'll want to make sure you can support the weight of the AP 
along with it. Those outdoor units can be hefty. That is unless you're using 
extension cables to hang the AP inside with the antenna outside. In which case, 
proper sealing of all of your connectors, lightning arresting, power 
protection, etc are all good 'non mount' gotchas you're going to want to 
consider.
  -Sam

On Mon, Aug 8, 2016 at 7:06 PM, DAVID BEYERLE 
<deb...@psu.edu<mailto:deb...@psu.edu>> wrote:
Ken,

First calculate the wind pressure from the antenna using something like  
http://www.wikihow.com/Calculate-Wind-Load<https://websitecheck.quinnipiac.edu/canit/urlproxy.php?_q=aHR0cHM6Ly91cmxkZWZlbnNlLnByb29mcG9pbnQuY29tL3YyL3VybD91PWh0dHAtM0FfX3d3dy53aWtpaG93LmNvbV9DYWxjdWxhdGUtMkRXaW5kLTJETG9hZCZkPUN3TUZhUSZjPTZ2Z05UaVJuOV9wcUNEOWhLeDlKZ1hOMVZhcEpROEpWb0Y4b1dIMUFnZlEmcj1yWWZxSF84b1R2Y1h4UnhVSTN4M20zWTdOd2dpcjd0bnVvR2JkWnNyVU00Jm09QmRqV3pvVlZYNVFzNWJjOUlpTDZPNGdCVXpCUzBLYm1yc1ppLWRiZDBhWSZzPVhCNnJMLWViZG1YQmVmY253VEFONDlxSk5KWk02eVIxUHBvT1RjcEE0YVUmZT0%3D&_r=cXVpbm5pcGlhYy1lZHU%3D&_s=ZGtyZXlub2xkcw%3D%3D>.
  A wind load of ~25 lb for that antenna should be very conservative.  Then sum 
the reactions (torques) at the base of the roof mount...the antenna imparts an 
overturning moment of ~250 ft-lb at the mast base, and so you ballast the mount 
to compensate for this.  The base of the frame is ~3' square, so the center of 
mass of cinder blocks which you'll use for ballast will be ~1.3' from the base 
of the mast, suggesting 180 lb of ballast should be enough.  Many installations 
use considerably less ballast and get away with it.  I happen to not like my 
masts to move (much).

The "gotcha" you should be aware of this that your roof must be able to support 
a ~200 lb load over an area of ~6 sq ft.  Of course, if it supports you, it 
likely will support the loading of this assemblage as well.

Best,
Dave

David Beyerle, P.E.
Communications Engineer, IEEE WCP
Penn State University
117 University Support Bldg 2
University Park PA  16802
da...@psu.edu<mailto:da...@psu.edu>
814 863-9432<callto:814%20863-9432>


From: "Mattson, III, Ken V" 
<kenmatt...@creighton.edu<mailto:kenmatt...@creighton.edu>>
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Sent: Monday, August 8, 2016 6:30:21 PM
Subject: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share?  How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this:
http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html<https://websitecheck.quinnipiac.edu/canit/urlproxy.php?_q=aHR0cHM6Ly91cmxkZWZlbnNlLnByb29mcG9pbnQuY29tL3YyL3VybD91PWh0dHAtM0FfX3d3dy5jYWJsZWFuZHdpcmVzaG9wLmNvbV9ub2

RE: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-09 Thread McClintic, Thomas 
Those sled mounts are great and the antenna you are looking at has very little 
wind resistance. I would suggest using fiber if able and take Sam’s points to 
heart as well. Proper sealing and grounding will keep your install working for 
years instead of months.

TJ McClintic


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Samuel Clements
Sent: Tuesday, August 9, 2016 8:18 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

And of course you'll want to make sure you can support the weight of the AP 
along with it. Those outdoor units can be hefty. That is unless you're using 
extension cables to hang the AP inside with the antenna outside. In which case, 
proper sealing of all of your connectors, lightning arresting, power 
protection, etc are all good 'non mount' gotchas you're going to want to 
consider.
  -Sam

On Mon, Aug 8, 2016 at 7:06 PM, DAVID BEYERLE 
<deb...@psu.edu<mailto:deb...@psu.edu>> wrote:
Ken,

First calculate the wind pressure from the antenna using something like  
http://www.wikihow.com/Calculate-Wind-Load<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.wikihow.com_Calculate-2DWind-2DLoad=CwMFaQ=6vgNTiRn9_pqCD9hKx9JgXN1VapJQ8JVoF8oWH1AgfQ=rYfqH_8oTvcXxRxUI3x3m3Y7Nwgir7tnuoGbdZsrUM4=BdjWzoVVX5Qs5bc9IiL6O4gBUzBS0KbmrsZi-dbd0aY=XB6rL-ebdmXBefcnwTAN49qJNJZM6yR1PpoOTcpA4aU=>.
  A wind load of ~25 lb for that antenna should be very conservative.  Then sum 
the reactions (torques) at the base of the roof mount...the antenna imparts an 
overturning moment of ~250 ft-lb at the mast base, and so you ballast the mount 
to compensate for this.  The base of the frame is ~3' square, so the center of 
mass of cinder blocks which you'll use for ballast will be ~1.3' from the base 
of the mast, suggesting 180 lb of ballast should be enough.  Many installations 
use considerably less ballast and get away with it.  I happen to not like my 
masts to move (much).

The "gotcha" you should be aware of this that your roof must be able to support 
a ~200 lb load over an area of ~6 sq ft.  Of course, if it supports you, it 
likely will support the loading of this assemblage as well.

Best,
Dave

David Beyerle, P.E.
Communications Engineer, IEEE WCP
Penn State University
117 University Support Bldg 2
University Park PA  16802
da...@psu.edu<mailto:da...@psu.edu>
814 863-9432<callto:814%20863-9432>


From: "Mattson, III, Ken V" 
<kenmatt...@creighton.edu<mailto:kenmatt...@creighton.edu>>
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Sent: Monday, August 8, 2016 6:30:21 PM
Subject: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share?  How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this:
http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.cableandwireshop.com_non-2Dpenetrating-2Droof-2Dmount-2Dwith-2D166-2Dx-2D120-2Dmast.html=CwMFaQ=6vgNTiRn9_pqCD9hKx9JgXN1VapJQ8JVoF8oWH1AgfQ=rYfqH_8oTvcXxRxUI3x3m3Y7Nwgir7tnuoGbdZsrUM4=BdjWzoVVX5Qs5bc9IiL6O4gBUzBS0KbmrsZi-dbd0aY=khJ8AF48JhIzhTT33ogqz41CZErVo1v_WGJUWV9R7zk=>

Any gotchas we should be aware of?

Thanks for any assistance,

Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140

A password is like a toothbrush:
Choose a good one, change it regularly and don't share it.
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_=CwMFaQ=6vgNTiRn9_pqCD9hKx9JgXN1VapJQ8JVoF8oWH1AgfQ=rYfqH_8oTvcXxRxUI3x3m3Y7Nwgir7tnuoGbdZsrUM4=BdjWzoVVX5Qs5bc9IiL6O4gBUzBS0KbmrsZi-dbd0aY=EMs8NvS3956fkeTXCXXofm3Crz7eWqpgI_pgnf2FmBU=>.


** Participation and subscription information for this EDUCAUSE 
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Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-09 Thread Samuel Clements 
And of course you'll want to make sure you can support the weight of the AP
along with it. Those outdoor units can be hefty. That is unless you're
using extension cables to hang the AP inside with the antenna outside. In
which case, proper sealing of all of your connectors, lightning arresting,
power protection, etc are all good 'non mount' gotchas you're going to want
to consider.
  -Sam

On Mon, Aug 8, 2016 at 7:06 PM, DAVID BEYERLE  wrote:

> Ken,
>
> First calculate the wind pressure from the antenna using something like
> http://www.wikihow.com/Calculate-Wind-Load.  A wind load of ~25 lb for
> that antenna should be *very* conservative.  Then sum the reactions
> (torques) at the base of the roof mount...the antenna imparts an
> overturning moment of ~250 ft-lb at the mast base, and so you ballast the
> mount to compensate for this.  The base of the frame is ~3' square, so the
> center of mass of cinder blocks which you'll use for ballast will be ~1.3'
> from the base of the mast, suggesting 180 lb of ballast should be enough.
> Many installations use considerably less ballast and get away with it.  I
> happen to not like my masts to move (much).
>
> The "gotcha" you should be aware of this that your roof must be able to
> support a ~200 lb load over an area of ~6 sq ft.  Of course, if it supports
> you, it likely will support the loading of this assemblage as well.
>
> Best,
> Dave
>
> David Beyerle, P.E.
> Communications Engineer, IEEE WCP
> Penn State University
> 117 University Support Bldg 2
> University Park PA  16802
> da...@psu.edu
> 814 863-9432 
>
> --
> *From: *"Mattson, III, Ken V" 
> *To: *WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
> *Sent: *Monday, August 8, 2016 6:30:21 PM
> *Subject: *[WIRELESS-LAN] Non penetrating roof mounted WiFi antenna
>
> Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures
> of the installation that you could share?  How high did you mount it? How
> much weight did you put on the base? We plan on putting it as high at 8-10
> ft. on something like this:
>
> http://www.cableandwireshop.com/non-penetrating-roof-
> mount-with-166-x-120-mast.html
>
>
>
> Any gotchas we should be aware of?
>
>
>
> Thanks for any assistance,
>
>
>
> Kenneth V. Mattson III
> Director - Network and Data
> DoIT
> Creighton University
> 402-280-2743
> 402-981-1140
>
> A password is like a toothbrush:
> Choose a good one, change it regularly and don't share it.
> ** Participation and subscription information for this EDUCAUSE
> Constituent Group discussion list can be found at http://www.educause.edu/
> groups/.
>
>
> ** Participation and subscription information for this EDUCAUSE
> Constituent Group discussion list can be found at http://www.educause.edu/
> groups/.
>
>

**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

Re: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna

2016-08-08 Thread DAVID BEYERLE 
Ken, 

First calculate the wind pressure from the antenna using something like 
http://www.wikihow.com/Calculate-Wind-Load. A wind load of ~25 lb for that 
antenna should be very conservative. Then sum the reactions (torques) at the 
base of the roof mount...the antenna imparts an overturning moment of ~250 
ft-lb at the mast base, and so you ballast the mount to compensate for this. 
The base of the frame is ~3' square, so the center of mass of cinder blocks 
which you'll use for ballast will be ~1.3' from the base of the mast, 
suggesting 180 lb of ballast should be enough. Many installations use 
considerably less ballast and get away with it. I happen to not like my masts 
to move (much). 

The "gotcha" you should be aware of this that your roof must be able to support 
a ~200 lb load over an area of ~6 sq ft. Of course, if it supports you, it 
likely will support the loading of this assemblage as well. 

Best, 
Dave 

David Beyerle, P.E. 
Communications Engineer, IEEE WCP 
Penn State University 
117 University Support Bldg 2 
University Park PA 16802 
da...@psu.edu 
814 863-9432 


From: "Mattson, III, Ken V"  
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
Sent: Monday, August 8, 2016 6:30:21 PM 
Subject: [WIRELESS-LAN] Non penetrating roof mounted WiFi antenna 



Has anyone roof mounted an AIR-ANT2588P3M-N antenna? Do you have pictures of 
the installation that you could share? How high did you mount it? How much 
weight did you put on the base? We plan on putting it as high at 8-10 ft. on 
something like this: 

http://www.cableandwireshop.com/non-penetrating-roof-mount-with-166-x-120-mast.html
 



Any gotchas we should be aware of? 



Thanks for any assistance, 




Kenneth V. Mattson III 
Director - Network and Data 
DoIT 
Creighton University 
402-280-2743 
402-981-1140 

A password is like a toothbrush: 
Choose a good one, change it regularly and don't share it. 
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/ . 



**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.