STAIRCASE IN VERTICAL SHAFT AND METHOD FOR CONSTRUCTING THE SAME

PROBLEM TO BE SOLVED: To enhance productivity and to reduce the period of construction work and the cost of construction work. SOLUTION: A plurality of unit cylindrical bodies 1 fabricated in a factory or workshop outside a vertical shaft and made of concrete, having about equal cross-sectional shap...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KITAYAMA HIROYASU, HOSHINA NORIKO, KANEDA NORIO, TAKEBE RYUICHI, TAKAMATSU YOSHINORI, MATSUDA KAZUSHIGE
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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