<P> Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations . Shoring comes from shore a timber or metal prop . Shoring may be vertical, angled, or horizontal . </P> <P> Raking Shores consist of one or more timbers sloping between the face of the structure to be supported and the ground . The most effective support is given if the raker meets the wall at an angle of 60 to 70 degrees . A wall - plate is typically used to increase the area of support . </P>

A procedure that uses wood or metal braces to reinforce trench walls is called