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Total 20 documents matching your query.

1. [TowerTalk] Concrete Strength (score: 1): Author: ssouva@twcny.rr.com (Scott & Sherry Souva); Date: Mon, 19 Mar 2001 17:16:28 -0500; TT list, I am putting up a US Tower TX-455 in about 4-6 weeks. When I priced the concrete delivery, the first question was; "What strength do you want?" Examples given were 1500 lb., 2000 lb., etc. I; /archives//html/Towertalk/2001-03/msg00379.html (8,071 bytes)
2. [TowerTalk] Concrete Strength (score: 1): Author: gdaught6@leland.stanford.edu (George T. Daughters); Date: Mon, 19 Mar 2001 14:34:13 -0800; Hi, Their instructions for pouring the base should specify the strength! It will probably be something like 3000 PSI. I had concrete pumped in for my tower (Tri-Ex) a year ago, and ordered 3000 PSI m; /archives//html/Towertalk/2001-03/msg00380.html (8,828 bytes)
3. [TowerTalk] Concrete Strength (score: 1): Author: w4ze@arrl.net (Ted Huf); Date: Mon, 19 Mar 2001 17:34:42 -0500; Anything less that 3000# would be used for sidewalks. TT list, I am putting up a US Tower TX-455 in about 4-6 weeks. When I priced the concrete delivery, the first question was; "What strength do you; /archives//html/Towertalk/2001-03/msg00381.html (8,884 bytes)
4. [TowerTalk] Concrete Strength (score: 1): Author: n3ue@arrl.net (Ed Wolf); Date: Mon, 19 Mar 2001 17:46:08 -0500; I used 3500lb footer mix. Been there for about 11 years now, all of it under ground except a small area which actually holds the tower base, and no problems of any kind yet. Ed Wolf - ars:N3UE - NA4; /archives//html/Towertalk/2001-03/msg00382.html (8,620 bytes)
5. [TowerTalk] Concrete Strength (score: 1): Author: K7LXC@aol.com (K7LXC@aol.com); Date: Mon, 19 Mar 2001 17:52:55 EST; Okay, concrete. According to the US Tower Foundation Notes - General, it calls for "minimum compressive strength of 3,000 psi @ 28 days". This is pretty a typical contractor-type mix. On the foundati; /archives//html/Towertalk/2001-03/msg00383.html (10,422 bytes)
6. [TowerTalk] Concrete Strength (score: 1): Author: rel@rnet.com (Ron Lile); Date: Mon, 19 Mar 2001 23:34:37 -0000; For most bases, the recommended 3000psi mix will work just fine. Regarding the hole, I found that the local sign company had augers up to 4 feet in diameter. To get an equivalent to a 3 foot square h; /archives//html/Towertalk/2001-03/msg00385.html (11,840 bytes)
7. [TowerTalk] Concrete Strength (score: 1): Author: GBENKO@prodigy.net (George Benko); Date: Mon, 19 Mar 2001 19:02:46 -0500; Hi Scott, First off, I am NOT a concret engineer. Just a ham who likes to read. My advice would be to get a copy of an Army Technical Manual TM 5-742, Concrete and Masonry. It tells you everything yo; /archives//html/Towertalk/2001-03/msg00386.html (10,596 bytes)
8. [TowerTalk] Concrete Strength (score: 1): Author: ssouva@twcny.rr.com (Scott & Sherry Souva); Date: Mon, 19 Mar 2001 21:41:32 -0500; Steve and TT crew, Thanks for the excellent information. I can't wait for the white stuff to melt and get started on this project. There have been some really great points made here. I had not consid; /archives//html/Towertalk/2001-03/msg00388.html (12,218 bytes)
9. [TowerTalk] Concrete Strength (score: 1): Author: b_bradfield@yahoo.com (Brad Bradfield); Date: Tue, 20 Mar 2001 07:36:12 -0800 (PST); This ain't easy, but it CAN be done, and without climbing into the hole. I added onto my house years ago and had to move one of the guywire king posts for my tower. Because this set of guys had to c; /archives//html/Towertalk/2001-03/msg00408.html (9,717 bytes)
10. [TowerTalk] Concrete Strength (score: 1): Author: Dan Bookwalter <n8dcj@yahoo.com>; Date: Wed, 27 Oct 2010 05:18:05 -0700 (PDT); I seem to recall from about 8 years ago that concrete is up to 75% of its strength in 72 hours or something like that. UST calls out 2500 PSI concrete after 28 days , so that i don't have to wait a m; /archives//html/Towertalk/2010-10/msg00373.html (7,035 bytes)
11. Re: [TowerTalk] Concrete Strength (score: 1): Author: "Mike" <noddy1211@sbcglobal.net>; Date: Wed, 27 Oct 2010 06:36:59 -0700; It cures more slowly in the damp ground which is good, wait the recommended month. Mike, K6BR I seem to recall from about 8 years ago that concrete is up to 75% of its strength in 72 hours or somethi; /archives//html/Towertalk/2010-10/msg00375.html (7,754 bytes)
12. Re: [TowerTalk] Concrete Strength (score: 1): Author: K7LXC@aol.com; Date: Wed, 27 Oct 2010 10:15:43 EDT; its strength in 72 hours or something like that. UST calls out 2500 PSI concrete after 28 days , so that i don't have to wait a month i was going to use 4000 PSI concrete and put the tower on it afte; /archives//html/Towertalk/2010-10/msg00378.html (7,294 bytes)
13. Re: [TowerTalk] Concrete Strength (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Wed, 27 Oct 2010 10:07:25 -0700; Concrete actually >cures< faster when damp. Concrete needs water to form the chemical reaction that gives it strength, and without moisture present it merely dries out. 73, Dave AB7E ________________; /archives//html/Towertalk/2010-10/msg00386.html (9,233 bytes)
14. Re: [TowerTalk] Concrete Strength (score: 1): Author: kr7x1@frontier.com; Date: Wed, 27 Oct 2010 18:47:42 +0000 (UTC); List readers: Please go to the PCA (Portland Cement Association) or ACI (American Concrete Institute) web sites and read the FAQs on concrete. Concrete once mixed with water does not need additional; /archives//html/Towertalk/2010-10/msg00390.html (11,049 bytes)
15. Re: [TowerTalk] Concrete Strength (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Wed, 27 Oct 2010 13:42:23 -0700; That's probably true for large volumes of concrete like a tower foundation, and I stand corrected. It is NOT necessarily true for smaller volumes of concrete, especially here in Arizona, where the co; /archives//html/Towertalk/2010-10/msg00392.html (13,146 bytes)
16. Re: [TowerTalk] Concrete Strength (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Wed, 27 Oct 2010 13:47:57 -0700; I should have said "dry out before it has cured to spec". 73, Dave AB7E _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTal; /archives//html/Towertalk/2010-10/msg00393.html (14,127 bytes)
17. Re: [TowerTalk] Concrete Strength (score: 1): Author: "Mike" <noddy1211@sbcglobal.net>; Date: Wed, 27 Oct 2010 18:55:07 -0700; I suppose what I meant to say was that when the concrete is underground the curing process is more efficient due to the damp soil which take the chemical generated heat away more efficiently. I also; /archives//html/Towertalk/2010-10/msg00398.html (13,420 bytes)
18. [TowerTalk] Concrete strength (score: 1): Author: Ed K0KL <cny99676@centurytel.net>; Date: Wed, 27 Oct 2010 22:39:24 -0500; One thought ... Concrete used for beams and columns and other standalone structures in a building or bridge need time to develop in order to perform the intended assignment. I am assuming in all disc; /archives//html/Towertalk/2010-10/msg00399.html (8,276 bytes)
19. Re: [TowerTalk] Concrete strength (score: 1): Author: kr7x1@frontier.com; Date: Thu, 28 Oct 2010 15:04:24 +0000 (UTC); Ed: My standard specifications allow for the stripping of forms from elevated beams, slabs and columns after 14 days. This is fairly typical in the industry. The caveat is that the full live loading; /archives//html/Towertalk/2010-10/msg00402.html (9,587 bytes)
20. Re: [TowerTalk] Concrete strength (score: 1): Author: Alan NV8A <nv8a@charter.net>; Date: Thu, 28 Oct 2010 11:33:29 -0400; 21 yards!!! My goodness! What kind of tower do you have that needs 21 yards of concrete? My UST HDX-555 needed only 5.5 yards, but the hole got dug too large and took 9 yards; I'm glad it was a fixed; /archives//html/Towertalk/2010-10/msg00403.html (8,485 bytes)

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