Please give valid certificate, thank you! The
Light steel keel and ceiling keel to have a test report of the general once a year.
Look at the keel is not used with light steel keel, and now a lot of use in the wooden side to do keel, wooden time will be a long deformation and rot. If it is light steel keel, then generally do not need re-examination, the original plate is not too heavy, coupled with such a large area of flat, and now have not heard of the installation after the fall, as long as the installation is not special , With a decade or eight years of no matter.
Valid certificate, sorry, no time.
I do an integrated ceiling, understand some of the ceiling.
The keel of the ceiling needs to be re-examined:
Detection parameters
Keel: size deviation, mechanical properties;
Accessories: size deviation, mechanical properties.
Keel ceiling project quality acceptance project:
Ceiling elevation, size, from the arch and shape should meet the design requirements.
Test method: observation; scale inspection.
The material, variety, specifications, regiment and color of the facing material should meet the design requirements. When the facing material is a glass plate, use safety glass or take reliable safety measures.
Inspection method: observation; check product certificate of competency, performance testing report and admission inspection records.
Finishes should be tightly installed. The overlapping width of the facing material and the keel should be greater than two-thirds of the width of the keel.
Test method: observation; hand pull check; scale check.
Boom, keel material, specifications, installation spacing and connection should meet the design requirements. Metal boom, keel should be surface corrosion treatment; wood keel should be anti-corrosion, fire treatment.
Inspection methods: observation; foot check; check product certificate of competency, admission acceptance records and hidden engineering acceptance records.
