GRATING AND METHOD OF MANUFACTURING THE SAME

GRATING AND METHOD OF MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a grating comprising bearing bars in parallel, members which have a smaller cross section than the bearing bar and are arranged between the bearing bars, and a twist bar arranged orthogonally to the members and the bearing bars and uniformly welded to the members and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIMAZAKI KENICHIRO, MIURA TAKAO, MIYASHITA YOSHIO, SAEKI TOSHIMASA, OKUBO TATSUO, KAWAGUCHI TAKANAO
Format: Patent
Sprache:eng
Schlagworte:
CESSPOOLS
FIXED CONSTRUCTIONS
SEWERAGE
SEWERS
WATER SUPPLY
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a grating comprising bearing bars in parallel, members which have a smaller cross section than the bearing bar and are arranged between the bearing bars, and a twist bar arranged orthogonally to the members and the bearing bars and uniformly welded to the members and the bearing bars by electric resistance welding.SOLUTION: In the grating formed by arranging bearing bars 1 each having an I-shaped cross section in parallel, arranging a twist bar 2 orthogonally to the bearing bars 1 and welding them by the electric resistance welding, members 3 each having a smaller cross section than the bearing bar 1 are alternately arranged between the bearing bars 1, upper end faces of the members 3 are made slightly lower than upper end faces of the bearing bars 1, and the twist bar 2 is fused to the members 3 and the bearing bars 1.