PROBLEM TO BE SOLVED: To provide a collapse range determiner capable of accurately determining a collapse range by a simple method.SOLUTION: A collapse range determiner comprises: first and second vertical pipe bodies 9, 4 vertically held, each closed at the upper end by a rubber plug 1 and at least partly transparent a continuous connection pipe body 5 both ends of which are connected in communication with the end parts of the vertical pipe bodies 4, 9, respectively a liquid 7 appropriately filled in the sealed spaces, namely, in the first and second vertical pipe bodies 9, 4 and the continuous connection pipe body 5 first and second liquid level markers 6, 3 each formed on a transparent part of each of the first and second vertical pipe bodies 9, 4 and showing a normal liquid level of the liquid 7 and a telescopic part 8 supported so as to be extensible and contractible in a vertical direction from and to the upper part of the first vertical pipe body 9.COPYRIGHT: (C)2012,JPO&INPIT【課題】簡易な方法で正確に倒壊危険範囲を判定することができる倒壊範囲判定器を提供する。【解決手段】垂直に保持されると共に上端部がゴム栓1で閉止され、且つ少なくとも一部が透明な第1の垂直管体9、及び第2の垂直管体4と、各垂直管体4、9の下部に夫々両端部を連通接続された連設管体5と、密封空間である第1の垂直管体9及び第2の垂直管体4、並びに連設管体5内部に適量充填された液体7と、第1の垂直管体9及び第2の垂直管体4の各透明部に夫々形成されて液体7の規定液位を示す第1の液位目印6、及び第2の液位目印3と、第1の垂直管体9の上部から垂直方向へ伸縮自在に支持された伸縮部材8と、を備えて構成されている。【選択図】図1
