1950's Bowstring Truss Problems
1950's Bowstring Truss Problems
(OP)
I have a bowstring truss project from a year ago (circa 1955) that is resurrecting itself and ran across a good technical paper on the web regarding the inspection of, inherent problems, and the repair of these trusses at ...
http://ascelibrary.org/doi/pdf/10.1061/%28ASCE%291...
Since we all like to share here, and sharing is good in analyzing problem children, does anyone have any direct personal experience on any special designs or fixes that may not have been addressed in the above, and any similar articles?
And they are problem children.
http://ascelibrary.org/doi/pdf/10.1061/%28ASCE%291...
Since we all like to share here, and sharing is good in analyzing problem children, does anyone have any direct personal experience on any special designs or fixes that may not have been addressed in the above, and any similar articles?
And they are problem children.
Mike McCann
MMC Engineering






RE: 1950's Bowstring Truss Problems
On a distantly related note, just this summer I drove my Mountaineer across the Hadley (NY) Parabolic Bridge, only to find an informational placard on the other side noting that it was closed to all traffic.
Of course, the placard is seriously out of date; the Wikipedia article is less so.
http://en.wikipedia.org/wiki/Hadley_Parabolic_Brid...
Mike Halloran
Pembroke Pines, FL, USA
RE: 1950's Bowstring Truss Problems
They had all sagged and had been shored a number of times.
With the owner's budget, further shoring was the only repair option.
RE: 1950's Bowstring Truss Problems
From the article "In 2006 it was reconstructed and restored with federal and state grants, and reopened without any load restrictions."
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: 1950's Bowstring Truss Problems
Many of my repair designs involved installing cables and pretensioning to remove dead load. Ends were attached to existing heel joint straps or saddled around the ends of the truss bottom chords. Damage to bottom chord and other members were repaired with epoxy and/or sistering reinforcements to the sides.
RE: 1950's Bowstring Truss Problems
Mike Halloran
Pembroke Pines, FL, USA
RE: 1950's Bowstring Truss Problems
http://www.westernwoodstructures.com/index.php/whi...
Mike McCann
MMC Engineering
RE: 1950's Bowstring Truss Problems
http://www.google.com/url?sa=t&rct=j&q=&am...
Mike McCann
MMC Engineering