Question

_________ joint is used to connect the wooden tie and the feet of rafters in a couple of close roof.

(a) Dovetail halved

(b) Closed mortised and tenoned

(c) Pin and tenoned

(d) Open and pin

I have been asked this question by my school principal while I was bunking the class.

I'd like to ask this question from Single and Double Roofs in section Roofing Materials of Construction & Building Materials

Answer 1

Right choice is (a) Dovetail halved

The best I can explain: Dovetail halved joint is used to connect wooden tie and the feet of rafters in a couple of close roof. In a couple close roof, the ends of the couple of common rafters are connected a tie beam. It is used to prevent the rafters from spreading out of the wall.