M ACdverti$er
Th e
omponent
anufacturing
November 1st, 2016 #09208 Page #27
Adverti$er
Don’t Forget! You Saw it in the
TRUSS EQUIPMENT
Do You Know Your Knots?
Marquis 14' x 24" Finish Roller Press Marquis Hydraulics brand finish roller press, 14 foot throat, 24" diameter rolls, 7.5 HP motor, grease fittings, push button controls with safety stop on panel box. 575 volt, 3 phase electrical. $9,990, FOB QC Wood Truss Systems 765-751-9990 www.woodtrusssystems.com
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n the photograph, the side grain is shown to provide understanding of what constitutes a knot defect when the truss member is cut perpendicular to this face. Each dark line of grain indicates an annual growth ring. In the sections marked A, the face of a sawn member would not show any knots but may show a figured or disrupted grain on the face. In this area, no defect exists. In section B, a knot would be visible, however, the knot would be considered a “live knot” or “solid knot.” This area the face of the lumber would be considered defect free. H o w e v e r, i n s e c t i o n C , a visible knot with a dark circle around the knot would exist. These knots are called “dead knots” or “loose knots” and would require a reduction in tooth count in the knot area because the knot may not be capable of transferring load to the adjoining wood fiber.
1996 Alpine Mighty Mite 1996 Alpine Mighty Mite beam press, model 745, 27 foot long, 5 foot wide, 5 HP drive, 12 inch wide platen, plastic table top and twin lever-arm controls. 208 / 230 / 460 volt, 3 phase. $13,990 FOB PA. Wood Truss Systems 765-751-9990 www.woodtrusssystems.com
The way to remember this is: In the photo, the center of the tree would be to the right with later growth rings to the left. Limbs of the tree growing with the tree are generally tight or live knots. They do not count as a defect in the plated area. Limbs of the tree where the tree grows around the limb are loose or dead knots. They do count as defects in the plated area!
PANEL CLIP TK7 C-CLAMP PRESSES 10 Ton C-Clamp Press. 110 Volt Motor & Pump. Includes Boom & Trolley. 4x2 Throat Excludes Overhead Beam & Jig Table. Red TK7 = $5,500. Brown TK7 = $5,000. FOB AR Wasserman & Associates 800-382-0329 www.wasserman-associates.com
PHONE: 800-289-5627
Knowing your knots will help you understand potential defects and thereby protect the quality of your final products.
Glenn Traylor Structural Building Components Industry Consultant http://www.linkedin.com/in/glenntraylor
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