Need a book? Engineering books recommendations...
Re: Negative Structures.[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)seaoc.org
- Subject: Re: Negative Structures.
- From: JUANGRAY(--nospam--at)COL2.TELECOM.COM.CO (Juangray(--nospam--at)col2.telecom.com.co)
- Date: Fri, 03 Apr 1998 08:30:14 GMT
Received: from [18.104.22.168] by server1.seaoc.org (NTList 3.02.13) id va161689; Fri, 3 Apr 1998 07:03:00 -0800 Received: from LOCALNAME ([22.214.171.124]) by col2.telecom.com.co (8.8.5/8.7.3) with SMTP id JAA11771 for <seaoc(--nospam--at)seaoc.org>; Fri, 3 Apr 1998 09:52:45 -0500 (GMT-0500) Message-ID: <35251C8F.3B00(--nospam--at)col2.telecom.com.co> Date: Fri, 03 Apr 1998 09:29:51 -0800 From: "Juan C. Gray" <juangray(--nospam--at)col2.telecom.com.co> X-Mailer: Mozilla 3.03 (Win16; I) MIME-Version: 1.0 References: <01BD5E5B.E97EAD30@BRECKENRIDGE> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Reply-To:seaoc(--nospam--at)seaoc.org Error-To:seaoc-ad(--nospam--at)seaoc.org X-Loop:seaoc(--nospam--at)seaoc.org X-Info: [SEAOC] Owner:seaoc-ad(--nospam--at)seaoc.org X-POP3-Rcpt:seaoc-ad(--nospam--at)seaoc.org X-Sender:seaoc-ad(--nospam--at)seaoc.org Return-Path:seaoc(--nospam--at)seaoc.org Precedence:list X-ListMember: seaoc(--nospam--at)shilstone.com [seaoc(--nospam--at)seaoc.org] According to the book "The great bridge" , by David McCullough , the Roeblings (father and son ) copied the caisson system from works that were being executed in Europe at that time. The book has a great description of the sinking of the caissons for the Brooklyn bridge. Juan C. Gray Harold Sprague wrote: > > This is similar to the construction of the "caissons" for the Brooklyn Bridge which was done by pressurizing the wooden caisson chambers while they were stacked with masonry, sunk to the mud line, hand excavated. The pressurized chambers resulted in the wo rkers becoming ill from "caissons disease" or as us SCUBA divers call it; the bends. > > The scheme for the caisson construction was developed in the 1850's and 1860's by John Roebling who died in a construction accident. His son Washington Roebling completed the construction and was himself stricken by caissons disease in 1872, but lived to s ee the bridge completion in 1883. > > I believe that this was the first time this method of construction was used. Back in those days you did not quit when the CD's were done. Engineers also tended to die, and become crippled at the same rate as the construction workers. > > Remind me to let someone else do construction observation. > > Former iron worker and current engineer, > Harold Sprague > Krawinkler, Luth & Assoc. > 4412 W. Eisenhower Blvd. > Loveland, CO 80537 > Voice: 970 667-2426 > Fax: 970 667-2493 > Email: hsprague(--nospam--at)klaalov.com >
- Prev by Subject: Need for Peer Review of Seismic Evaluations and Retrofit Project
- Next by Subject: Nels on Factory Built Trusses
- Previous by thread: High Strength Concrete (>10,000 psi) Design Problems
- Next by thread: RE: Beam restraint