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RE: UG Ductbank Concrete[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: UG Ductbank Concrete
- From: "Horning, Dick/CVO" <dhorning(--nospam--at)CH2M.com>
- Date: Mon, 28 Sep 1998 14:50:10 -0600
I suggest using 2500 to 3000 psi concrete. You want it to hold together if accidentally hit with a backhoe bucket, and it will have strength to bridge any soft spots in the soil. -----Original Message----- From: Canitz, Charles F NAB02 [SMTP:Charles.F.Canitz(--nospam--at)nab02.usace.army.mil] Sent: Monday, September 28, 1998 12:33 PM To: 'Seaoc' Subject: UG Ductbank Concrete In light of the recent discussion regarding lean concrete used for replacement of unsuitable in-situ soil, I have a similar question. When encasing an underground(approx 30" below fin gr) ductbank(2 rows - each row consists of three 2" PVC cdt), what type of concrete is normally specified? 500 psi? 1000 psi? Note that this work will occur within the mid-Atlantic area. Thanks in Advance.
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