Not only does the trellis support the weight of the fruit, but it spreads the grape canopy ensuring sunlight penetrates to all parts of the plant in addition to promoting good air circulation which is essential for keeping down the incidence of diseases which may harm the developing fruit. Hang your vines or plant your grapes and train them to grow along the arbor.The use of a trellis when growing grape vines is of the utmost importance. Insert a golf tee into each hole in the ends of the conduit to keep it from sliding out of the arbor. Slide one piece of conduit through each of the holes on the arbor square. Put a washer on each lag bolt, insert and tighten with the wrench. Space the bolts evenly so they do not touch when inserted. Use three bolts total, two on one side of the post and one on the other at each corner. Repeat the process on each side of each corner of the arbor square.īolt the sides of the arbor square to the posts with lag bolts. Secure in place with two ring shank barn nails. Hold one angled edge even with the bottom edge of the arbor square and the other even with the post to form a brace. These pieces hold the arbor in place temporarily.Ĭut a 45-degree angle on the end of each 3-foot-long 2-by-6 board. Nail the 12-inch 2-by-4 pieces to the corners of the top of the arbor square. Repeat this process to mark all four posts. Hold the level on the conduit to keep it even and mark where it touches the post. Hold a piece of conduit at your mark and extend it to the next post. If one post seems shorter than the others, measure and mark that post. Measure 8 feet up from the ground along one post. Tamp the dirt down to hold the post in place. Pack the removed dirt around the post, keeping it level. Hold the level against one post and measure to ensure it is 12 inches from each of your reference nails. ![]() Move any other obstacles from the area.ĭig a 30-inch-deep hole at each of the four corners, marked by the nails, using the post hole digger. Repeat this process for each corner of the arbor square. Measure 12 inches from the nails on each side of the arbor square and insert another nail for reference. Press one #16 nail into the ground on each side of the 4-by-4. Place a level against the post and adjust it until it is level. Hold one 4-by-4 post inside of the corner of the arbor square. Place a level on top of each side to ensure it sits evenly. Place bricks underneath each corner to support the arbor off the ground. Transport the arbor to your desired resting place. Drill a 3/16-inch hole 1 3/4 inches from the edge of each end of the pieces. ![]() Drill 1-inch holes at each mark with the hole saw.Ĭut 14 pieces of 3/4-inch galvanized conduit tubing to 10 feet long each. Measure every 15 inches and mark slightly below the center on the remaining two sides. Repeat this measuring and marking process on the opposite side of the square. Repeat the measuring and marking process until you reach the opposite end of that board. Measure 15 inches from that mark and mark again. Mark the measurement slightly higher than the middle of the 2-by-6 board. Measure 15 inches from one corner of the square. Cut close to the original square with a circular saw, being careful not to gouge any boards. Repeat this process for each of the four corners. ![]() Bolt the board in place with two 4-inch spikes on each end. Place one 4-foot-long, 2-by-6 board across the corner at a 45-degree angle so that it overhangs two sides of the square. Place the carpenter's square along one corner of the square you built in the previous step and line up the edges of the boards to square it.
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