I could not help but comment about the Southern Yellow Pine (SYP). I worked for a local lumber yard for about 4 years, while there, the company set up a truss plant and began building all kinds of wood truss configurations. The largest I hauled were 54'-0" and 60'-0" long, all were built from kiln dried SYP, No. 1 & No. 2, don't recall any No. 3 in there, lumber was clearly stamped. All trusses were designed by an engineer and signed, stamped sealed drawings were created for each job. I am aware of the brittleness of SYP, but it was commonly used, and still is for trusses today.
I've worked in that shop, from setting the saws to make the webs, setting the jigs on the table, assembling and running the roller compressing the splice plates on each side, which are hand set then pressed when the giant roller is run from one end to the other. They were then sent via rollers outside to be stacked and bundles, then loaded onto a Dump D Matic expandable truss trailer, which I used to deliver the bundles.
Most problems with these trusses were the results of handling, those large ones I mentioned earlier were a big pain in the @ss to deal with, had the boiler shop next door make up a spreader bar for them. Sometimes when dumping the bundles, in cold weather a chord or web may hit a hard lump of frozen dirt or ice and fracture, SYP is definitely brittle.
Lou, some good reading on truss design, please take a look, might be a bit much, but good information
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
