Construction elevators are generally used for 8 years. According to "Technical Regulations for Safety Assessment of Construction Hoisting Machinery JGJ/T 189-2009"
3.0.1 Tower cranes and construction lifts that exceed the specified service life shall be evaluated for safety.
3.0.2 Tower cranes and construction lifts shall be evaluated for safety in one of the following circumstances:
1 Tower crane: below 630kNm (excluding 630kNm), ex-factory period of more than 10 years (excluding 10 years); 630kNm~1250kNm (excluding 1250kNm), ex-factory period over 15 years (excluding 15 years); above 1250kNm (including 1250kNm), the factory year is more than 20 years (excluding 20 years);
2 Construction lifts: SC type construction lifts with a factory life of more than 8 years (excluding 8 years); SS type construction lifts with a factory life of more than 5 years (excluding 5 years).
3.0.3 For construction cranes that exceed the design and specify the corresponding load conditions and allow the number of work cycles, they shall be disposed of.