Push pull type rolling steel door is used, when:
AOpening area more than10m
BOpening area less than 10m²
CBoth A&B
DNone
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
The horizontal projection of head or sill beyond the face of the frame of door or window is:
The main function of the drier in painting is to
Window project outside the external wall of the room
Hinge used for heavy door:
The window provided on the inclined roof of a building is called: