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Total 4 documents matching your query.

1. [TowerTalk] Expansion joint in conduit (score: 1): Author: "Zivney, Terry" <00tlzivney@bsu.edu>; Date: Sat, 4 Nov 2017 16:29:15 +0000; My conduit run between towers will be 3 to 4 feet deep and 200 feet long. 2 inch nominal PVC conduit. Should I use an expansion joint underground? Are they truly waterproof? Terry N4TZ ______________; /archives//html/Towertalk/2017-11/msg00086.html (6,700 bytes)
2. Re: [TowerTalk] Expansion joint in conduit (score: 1): Author: dwkanepe--- via TowerTalk <towertalk@contesting.com>; Date: Sat, 4 Nov 2017 15:38:38 -0400; Unless you expect the ground temperature at that depth to be subject to large changes, it is unlikely that expansion/contraction will be an issue. For example (from NFPA-70, Table 352-44) the length; /archives//html/Towertalk/2017-11/msg00100.html (8,179 bytes)
3. Re: [TowerTalk] Expansion joint in conduit (score: 1): Author: Patrick Greenlee <patrick_g@windstream.net>; Date: Mon, 6 Nov 2017 07:11:02 -0600; Thermally induced expansion and contraction is not the only effect to consider. Expansive soil will expand and contract with variations in soil moisture independent of temperature. I am currently in; /archives//html/Towertalk/2017-11/msg00102.html (10,203 bytes)
4. Re: [TowerTalk] Expansion joint in conduit (score: 1): Author: dwkanepe--- via TowerTalk <towertalk@contesting.com>; Date: Mon, 6 Nov 2017 13:03:30 -0500; My complete post included ..." For long runs it is advisable to not run it perfectly straight, to allow for any small amount of movement...." to account for ground movement, in addition to thermal e; /archives//html/Towertalk/2017-11/msg00111.html (8,360 bytes)

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