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The minimum number of holdfasts recommended on each side of a door frame and a window frame respectively are 
1. 2 and 1  
2. 3 and 2 
3. 2 and 2   
4. 2 and 3

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Correct Answer - Option 2 : 3 and 2 

Concept-

  • Holdfasts. These are mild steel flats (section 30 mm × 6 mm), generally bent into Z – shape, to fix or hold the frame to the opening. The horizontal length of holdfast is kept about 20 cm and is embedded in the masonry.
  • Panel. This is the area of the shutter enclosed between the adjacent rails.
  • Mullion. This is a vertical member of a frame, which is employed to subdivide a window or a door vertically.
  • Transom. This is a horizontal member of a frame, which is employed to subdivide a window opening horizontally.
  • Shutters. These are the openable parts of a door or window. It is an assembly of style, panels, and rails.
  • Horn. These are the horizontal projections of the head and sill of a frame to facilitate the fixing of the frame on the wall opening. The length of horns is kept about 10 to 15 cm.

The minimum number of holdfasts recommended on each side of a door frame and a window frame respectively are 3 and 2.

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