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Don’t Forget! You Saw it in the
October 1st, 2016 #09207 Page #25
TRUSS EQUIPMENT
Are you indicating defects accurately when recording damaged teeth? The plate placement method of evaluating defects in the plated area is a good approach to use when inspecting your installed connector plates. But are you recording the results correctly? MiTek Vertical Roof Truss Stacker MiTek Peak-Up, vertical truss stacker with 22 HP, heavy-duty drive system, autoindexing, spring assisted receiver arms, holds up to 30 trusses from 16 foot to 80 foot in length, up to 14 foot height, with 40 sec. average cycle time. Adjustable bridge/ arm starts cycling process, bundle indexes back 1 1/2" as each truss is stacked. Arms work as two sets of four adjacent arms or all eight arms at once. 230 volt, 3 phase electrical. Control panels are 115 volt, 1 phase electrical. Conveyors shown in pictures are not included. $42,990 FOB PA. Wood Truss Systems 765-751-9990 www.woodtrusssystems.com
Using the plate placement method, it is common to record folded teeth or damaged teeth with a rectangle representing the ineffective teeth. This is always done in pairs, because a visible folded tooth generally hides its partner tooth folded under the body of the plate. To do this, most folks have a general rectangle and size to reflect the defect. But did you know that the size depends on the connector plate? In the first photo, several different styles of connectors show some of the variations. Usually the biggest difference will exist between high strength and regular gauge connectors within a plant’s plate inventory. Each of these connectors would have a different rectangle representation. The correct method to determine the proper and accurate rectangle is to think about the connector in total. For example, a 4 x 5 Morton 20 gauge plate has 12 sets of teeth. Folded teeth would be recorded as 1/12 the area of the plate, 1.66 square inches, or a 1 ¼ x 1 ¼ square. The example below illustrates the graphical representation of a 16 gauge high strength connector. The tooth area represents the boundary where one tooth ends and the other begins.
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
A simple way to evaluate a rectangle is to ask the question: Does the rectangle represent the percentage of the total plate size? If it does, then your representation is correct. 2006 Alpine 40' Kickleg Floor Truss Machine Model 47 Speed Roll Floor Truss Machine. 6’ x 40’ Steel Table with Kickleg Supports. Air Cylinder Clamping (4x2 Trusses from 12” to 24”). Gantry Roller with Safety Bars & Ride Platform. 120 Feet/Minute Gantry Travel Speed. 5 HP Motor (208 Volt / 3 Phase). Overhead Plate Rack. Available in October 2016. $27,500 FOB NE. Wasserman & Associates 800-382-0329 www.wasserman-associates.com PHONE: 800-289-5627
Different plate styles require different defect marks representing the percentage of teeth sets for the particular size connector. Keeping these thoughts in mind while inspecting your plates will help ensure that your defect records are accurate.
Glenn Traylor Structural Building Components Industry Consultant http://www.linkedin.com/in/glenntraylor
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