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In timber roof figure shown below, the part represented by number 3 denotes __________(a) collar beam(b) arch braces(c) rafter(d) queen posts |
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Answer» Right choice is (b) arch braces Easiest explanation: Lacking a tie beam, the arch-braced (arched brace) truss gives a more open look to the interior of the roof. A double arch braced truss has a second pair of arched braces lower down, from the rafter to a block or inner sill: This form is called a wagon, cradle, barrel or tunnel roof because of this cylindrical appearance. |
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