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Home > new > The useful life of the provisions of tower cranes

The useful life of the provisions of tower cranes


2011/11/27 7:05:08


According to "Ministry of Construction issued construction on the" Eleventh Five-Year "to promote the use and limitations prohibit the use of technology (the first) of Notice" (No. 659), for construction tower cranes (TOWER CRANE) the useful life of the following provisions :
(A) The following three types of tower cranes, more than years of assessment by a qualified rating agencies requisite to use:
⒈ 630kN.m the following (excluding 630kN.m), the factory life of more than 10 years (not including 10 years) of the tower crane;
⒉ 630 ~ 1250kN.m (excluding 1250kN.m), the factory length of more than 15 years (excluding 15 years) of the tower crane;
⒊ 1250kN.m above, the factory life of more than 20 years (not including 20 years) of the tower crane.
(B) if the tower using the instructions provided useful life is less than the above requirements, should use the instructions provided for life.
(C) In addition to the machine, the main tower of scrap bearing structural parts, shall be in accordance with "tower crane safety regulations" (GB5144-2006) Section 4.7: "structural parts of the scrap and work experience" of the regulations.