FIXING METHOD OF MANHOLE UPPER COVER

PURPOSE:To fix an upper cover speedily, securely and strongly requiring only a small quantity of binding agent for fixing, and eliminate need of a releasing agent. CONSTITUTION:A cord-like packing 5 is installed in the middle of an inner circumferential surface of a circular groove 3a of a lower fra...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ARAKADO KIYOSHI, SATO YUKIO, NOHARA MITSUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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