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RE: Lap Splices for Restoration Projects[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Lap Splices for Restoration Projects
- From: "Rogers, Robert" <Robert.Rogers(--nospam--at)Woolpert.com>
- Date: Mon, 23 Aug 1999 15:56:20 -0400
Jim, Just a thought, you might want to consider a mechanical connector if you have sufficient cover. Barsplice Products, Inc., makes "crimp-on" mechanical connectors that develop the required ACI tensile load. It seems that if you lessen the amount of concrete to remove (to obtain the bar splice) plus you wouldn't have to go through the hassle of welding. Here's some more info if you're interested. Barsplice Products, Inc. 1875 Radio Road Dayton, OH 45431 Phone: (513)252-3456 Fax: (513)252-9176 Robert C. Rogers, PE robert.rogers(--nospam--at)woolpert.com ph: 937-461-5660 fax: 937-461-0743 Woolpert LLP 409 East Monument Avenue Dayton, Ohio 45402 -----Original Message----- From: Jim Kestner [mailto:jkestner(--nospam--at)somervilleinc.com] Sent: Monday, August 23, 1999 3:35 PM To: SEAINT Subject: Lap Splices for Restoration Projects We are currently working on a concrete restoration project. This is an older structure, built in 1921. (before the high bond deformation bars were used). There may be some instances where some rebar has lost a significant enough area to splice a new bar in. The CRSI publication, "Evaluation of Reinforcing Steel Systems in Old Reinforced Concrete Structures" recommends adding 10% to current lap lengths. The reason stated is the old bars were 50% effective in bond plus the steel yield being 33 v. 60 ksi gives a 10% difference in lap length. The Sika rep. thinks these lap lengths are longer than what is normally used. What am I missing here? An alternative might be welding, but I would prefer to avoid this if I can. Jim Kestner, P.E. Green Bay, Wi.
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