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A _________ door is provided with special Hinges known as the double action spring Hinges and thus the shutters of the door are held in a closed position when the door is not in use.(a) Swing(b) Revolving(c) Rolling(d) CollapsibleThis question was addressed to me by my college professor while I was bunking the class.Question is taken from Parts of Window topic in section Doors, Windows and Ventilators of Construction & Building Materials

Answer»

Correct choice is (a) SWING

Easiest explanation: In case of Swing doors, when the DOOR is to be used a slight push is made and then the action of SPRING BRINGS the shutter in the open position. This type of door is widely used in passages of public BUILDING such as government offices, banks, etc.



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