All the cut size timber should be in required size, uniform shape and straight in length.
All the cut size timber should be free from cracks, termite marks and with minimum knots.
All the cut size timber should be primer coated/black Japan applied to reduce weather effects.
All the door frame joints to be fixed with wooden nails (pins). Not with M.S. nails.
Horns in frames not essential, hold fast of 30 mm / 40 mm x 3 mm x 150 mm / 200 mm length to be provided. Minimum 3 nos. on each side embedded in plain cement concrete of 6 inch thick
