Thank you for your kind comments. Only heavy objects are involved here, which can be transported by crane. Therefore, the V101 mainly considers the passage of people. Our opinion is that the steel grille cover plate is used here.
Thank you for your kind advice. Only access to heavy objects is involved here, which can be transported by crane. So the V101 mainly considers the passage of personnel, our opinion is to use the cover steel grille cover here.
Thank you for your good advice. This will only involve the maintenance of heavy objects, which can be transferred by crane. Therefore, V101 mainly considers personnel access. Our opinion is to use steel grating cover here.