A grape arbor is a great structure for training unruly vines and creating shade for an intimate sitting area. Homeowners Tony and Jennifer Lewandowski had a small, sunny side yard with a 14- by 14-foot flagstone patio and two mature grape vines (figure A). They wanted an arbor to support the vines.
Landscape designer Susan Ballinger designed a sturdy arbor with a painted-on patina finish to give it an aged, Mediterranean look. You can build a more open structure if you want to let sun through in the winter when vine leaves are gone, or construct the arbor with a tighter cross-piece design to provide better shade.
Ballinger says that a professional would charge about $4,000 for labor and materials to construct an arbor, but a do-it-yourselfer can build it for only $800, including the cost of two grapevines. This project is rated a 3 on a difficulty scale of 1 (easy) to 5 (difficult), but requires basic carpentry skills and precise measurements. It takes about three weekends to complete, so it won't be long before you're enjoying the fruits of your labor.
Step One: Setting the Posts
Landscape contractor Jesse Grajeda chose Douglas fir beams for the arbor because they're easy to paint and readily available. He uses standard 4x8 beams for the headers, 4x6s for the posts and rafters, and 4x4s for the cross pieces. He also says to be sure to check your local building codes.
If you plan to paint the arbor, prime it with one coat of a light beige acrylic paint. Measure and stake the locations for the arbor's post holes. (The arbor for this project has an irregular shape, so some of the posts are set as close as four feet apart, and some are as far as 10 feet apart.) Run a string line to outline the perimeter.
Dig the post holes about two feet deep and one foot in diameter. Local codes require that the holes be filled six inches above grade, so the crew built some simple square forms using 2x6s to hold the concrete while it sets. Fill the holes with ready-mix concrete to the top of the forms. Sink a 4- by 6-inch galvanized post bracket into each form, and make sure it is level. Let the concrete set for 24 hours before placing the posts into the brackets. Check that they are plumb and secure them with lag bolts.