| 摘要 |
A system of placing and supporting elongated control joint strips, headers and the like preparatory to the pouring of a concrete slab, using elongated strips having V-shaped longitudinal bends, and spaced socket members defining non-circular sockets, in combination with stakes on non-circular cross section having two different effective transverse dimensions. The preferred stakes are of oval or elliptical cross section, with longitudinally spaced ring-like ribs on the shorter sides, and the preferred socket members are either integral U-shaped straps lanced from the strips, or separately formed brackets fitted onto the strips and having means defining non-circular sockets alongside the strips. A base plate, also with a non-circular socket, is provided for stabilizing stakes in a soft base such as sand, and related items include intersection brackets for connecting the adjacent ends of strips in a gridwork, and clips for securing together the overlapping ends of strips, two embodiments of such clips, one for control joints and one for headers, also having tabs formed with non-circular sockets for receiving stakes. The method of positioning and supporting the strips includes the steps of arranging the strips in rows, placing the stakes loosely through the sockets and into the ground, positioning each strip at a selected level along its stakes, and engaging the stakes in the sockets.
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