Building Rough-and-Ready Adjustable Utility Shelves

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Sturdy utility shelves thrive in basements. Like healthy houseplants, they seem to grow fuller in their ideal environment.

Buy or build heavy-duty, reinforced shelving if you expect to store boxes of books, files, or other hefty loads.

The shelves in this project get their strength from supports at the front and back. The framework is made of eight 2x4 uprights with adjustable shelving strips and 2x4 front and back rails that hold up interlocking shelf supports.

The plywood shelves can be up to 2 feet deep and 4 feet long. The number of vertical supports depends on the total length and the weight you’ll put on the shelves. With two interior uprights, you’ll have shelf spans of about 32 inches for an 8-foot long unit. If you use ¾-inch plywood shelves, spans could be 3 - 4 feet.

Begin by toe-nailing 14 1/2-inch-long 2x4 blocking between the appropriate ceiling joists where the uprights will intersect the joists. Screw heavy-duty adjustable shelf supports to one side of each upright. Then screw one set of end uprights to the blocking and to the 2x4 soleplate just above the wall (assuming the shelf sits against a wall), making sure the shelf support hardware is facing out and the upright is plumb. Install the other end uprights in the same manner, 8 feet from the first set. The middle uprights should be spaced 31 inches on-center from the other ones. To make the unit more stable, nail pressure-treated 2x4 blocks between the front and back of each pair of uprights at the floor level.

Build the shelves by cutting the rails 28 inches long so they’ll fit flush with and between the uprights. You can cut the plywood shelves into 28-inch lengths to match the rails, in which case there will be a 3-inch gap between adjacent shelves. Or you can cut them into 31-inch lengths, which are centered on the rails and notched on the ends so they’ll fit around the uprights. Nail or screw the shelves onto the rails. If you expect extremely heavy loads on the shelves, you can add 2x4 supports under the side edges of the shelves. Then attach the matching hardware shelf supports on the outward side of the rails to match the supports on the uprights.

You then can insert the shelves at the height suited to what you are storing. The bottom set of shelves should be 8 - 12 inches off the floor to ensure good air circulation around stored items.

MATERIALS LIST

Item

Material

Dimensions

Qty

Uprights

2x4 pine

84”

8

Upright supports

2x4 treated pine

21”

4

Rails

2x4 pine

96”

9

Shelves

¾” plywood

24x28 or 31”

9

10d finish nails 1 6d common nails 2 #8 drywall screws eight heavy shelf standards.



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