Abstract: An adjustable brace for supporting an elevated concrete form floor between support beams during the curing of the concrete is provided. The adjustable brace is formed from two legs which are connected together at their top to a cradle assembly such that the legs can move in scissors fashion with relation to each other. The brace also includes a device for adjusting the height of the legs or the height of the cradle or both. In use, the feet of the brace are placed at the web/flange interface of opposing facing support beams while the top of the brace provides support to a shoring member placed beneath the elevated form floor between the support beams.