1 The excavation is less than 7-1/2 feet (2.5 meters) deep or is benched for at least 2 feet (.61 meters) horizontally for every 5 feet (1.52 meters) or less of vertical height;  The bottom of the excavation, from the excavation face to the formwork or wall, is at least 2 feet (.61 meters) wide, and wider if possible;
The definition of a detriment is  something that can cause damage, injury or harm. An example of a detriment to your health is not eating healthy foods.
1. To feel remorse, contrition, or self-reproach for what one has done or failed to do; be contrite: [He] liked to visit prisoners and admonish them to repent of their ways (Adam Hochschild). 2. To feel such regret for past conduct as to change one's mind regarding it: repented of intemperate behavior.