TIMBERING FOR SQUARE COLUMN FORM

PURPOSE:To fix a crossing part in an about rectangular state without the influence of the external shape of a form by making a control wall formed in a guide part cross a clamp frame at right angles, and driving a wedge into a wedge drive in hole. CONSTITUTION:In mutual crossing parts between adjacent clamp frames 3..., a control wall 33 formed in the guide part 31 of the clamp frame 3 on one side is made to cross the clamp frame 3 at right angles. Next, wedges 34... are driven into wedge drive in holes 32... formed in the guide part 31 to press the bodies 30 of clamp frames 3 on the other side against the control wall 33 for bringing them into mutual contact. The mutual cross angles of adjacent clamp frames 3 therefore become about a right angle, and such a state is kept until a timbering is removed from a column form 1. Thus even if force acts from the inside of the form 1 toward its outer periphery, the form 1 is difficult to deform, and its external shape is not affected much, and the mutual crossing part of the clamp frames 3 can be fixed in an about rectangular state.