A projecting piece usually provided to support a truss, is

Solution (By Examveda Team)

This question asks you to identify a projecting piece (something that sticks out) that is usually used to support a truss (a frame, often triangular, used to hold up roofs or bridges).
Let's look at each option:

Option A: Cornice
A cornice is a decorative molding that projects (sticks out) from the top of a building or a wall. Think of it as a fancy, often horizontal, border near the roofline. While its primary role is often decorative, a strong, structural cornice can be part of the overall system that supports the roof structure, which includes trusses. Since it clearly fits the description of a "projecting piece" and is located where roof supports are needed, it is the most suitable answer among the given options.

Option B: Coping
Coping is the top layer of a wall, often shaped or sloped to shed rainwater. It might project a little to guide water away, but its main purpose is to protect the wall from weather, not to structurally support a heavy truss.

Option C: Frieze
A frieze is a decorative band, usually horizontal, found on a wall. It's mainly for decoration, often with sculptures or paintings, and it does not provide structural support for a truss.

Option D: Lintel
A lintel is a horizontal beam placed above an opening, like a door or window. Its job is to support the wall or load directly above that opening. While it is a structural support, it doesn't "project" from a wall to support a truss in the way the question describes; it spans across an opening.

Therefore, based on the description "a projecting piece" that can be involved in supporting roof structures like trusses, Cornice is the best choice from the given options.