Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




281 posts

Ultimate Geek
+1 received by user: 3


Topic # 84718 6-Jun-2011 19:27
Send private message

Hi,


Does anyone know the maximum diameter a hole can be in a floor joist (to be used for cat5 & RG6).



Cheers
Chris    

Create new topic
6039 posts

Uber Geek
+1 received by user: 157

Trusted

  Reply # 478293 6-Jun-2011 19:28
Send private message

Hi, building industry start getting bitter and twisted if you go over 32mm, normally 25mm is fine, otherwise put a couple of 25mm in with a gap between.

How many cables are you trying to put through.

Cyril



281 posts

Ultimate Geek
+1 received by user: 3


  Reply # 478301 6-Jun-2011 19:43
Send private message

The maximum will 3 rg6  and 3 maybe 4 cat5, and then further along the joist will be another 2 cat5






  

 
 
 
 


6039 posts

Uber Geek
+1 received by user: 157

Trusted

  Reply # 478307 6-Jun-2011 19:54
Send private message

Hi, oh, so just a couple of cables, a 25mm hole will start being stressed when your stuffing 10 or so cat6 cables not 6 or 7, cat5e cables are slightly smaller. RG6 and Cat6 are similar dia.


Cyril

38 posts

Geek
+1 received by user: 3


  Reply # 478310 6-Jun-2011 20:06
Send private message

Cyril's advice sounds good to me as a structural engineer. Of course it all depends on the depth of the joist.
Generally penetrations should be less than 1/4 of the depth of the beam. It must also be located at mid-height of the joist.



281 posts

Ultimate Geek
+1 received by user: 3


  Reply # 478327 6-Jun-2011 20:32
Send private message

Thanks guys,  the joists at normal 6" joists so 25mm is well under the 1/4 of the depth.  I'll test on a scrap piece of wood to work out how small I can go to fit all the required cables through. 

6039 posts

Uber Geek
+1 received by user: 157

Trusted

  Reply # 478345 6-Jun-2011 21:04
Send private message

Just use a 25mm which is pretty much all a sparkie will use for all holes regardless of what he is putting through..

Cyril

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

UFB killer app: Speed
Posted 17-Nov-2017 17:01


The case for RSS — MacSparky
Posted 13-Nov-2017 14:35


WordPress and Indieweb: Take control of your online presence — 6:30 GridAKL Nov 30
Posted 11-Nov-2017 13:43


Chorus reveals technology upgrade for schools, students
Posted 10-Nov-2017 10:28


Vodafone says Internet of Things (IoT) crucial for digital transformation
Posted 10-Nov-2017 10:06


Police and Facebook launch AMBER Alerts system in NZ
Posted 9-Nov-2017 10:49


Amazon debuts Fire TV Stick Basic Edition in over 100 new countries
Posted 8-Nov-2017 05:34


Vodafone VoIP transition to start this month
Posted 7-Nov-2017 12:33


Spark enhances IoT network capability
Posted 7-Nov-2017 11:33


Vocus NZ sale and broadband competition
Posted 6-Nov-2017 14:36


Hawaiki reaches key milestone in landmark deep-sea fibre project
Posted 4-Nov-2017 13:53


Countdown launches new proximity online shopping app
Posted 4-Nov-2017 13:50


Nokia 3310 to be available through Spark New Zealand
Posted 4-Nov-2017 13:31


Nest launches in New Zealand
Posted 4-Nov-2017 12:31


Active wholesale as Chorus tackles wireless challenge
Posted 3-Nov-2017 10:55



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.