What is the proper distance to set forms beyond building lines when excavating?

The proper distance to set forms beyond building lines when excavating is typically three feet. This distance is important for several reasons related to safety and structural integrity.

Setting forms at this distance helps ensure that the excavation does not undermine the stability of the surrounding soil or existing structures. It allows enough space for excavation equipment to operate safely and efficiently without risking damage to adjacent property. Additionally, having adequate space helps in managing drainage and erosion, which can be exacerbated by excavation activities close to building lines.

In construction practices, three feet is a commonly accepted standard that balances the need for working space with safety considerations, making it the preferred choice in field operations.