Cut one long piece of PVC pipe to a length of 4 feet using the hacksaw. This will be the top of the barre. If you wish to make a longer barre, cut this piece to the desired length.
Cut two pieces of PVC pipe to a length of 38 inches. These will be the side pieces.
Cut four pieces of PVC pipe to a length of 1 1/2 feet. These will be the support braces.
Connect the elbow joints to both ends of the top piece, then connect the side pieces to the other opening of the joint.
Connect the center of the T-joints to the bottom of the side pieces, then connect the support braces to both sides of each T-joint so that the support braces are perpendicular to the top piece.
Stand the barre up and make sure all joints are secure. You may wish to place some rubber drawer-liner material under the supports to keep the barre from sliding around while it is being used.