@civilengineeringhub001: How do you check whether a foundation has been excavated to the correct depth? Using a dumpy level and levelling staff, you can work from a known benchmark, establish the height of instrument and determine the required staff reading for the specified formation level. Check several points across the excavation — not just one location. Accurate foundations begin with accurate levels. #civilengineeringhub001 #foundationexcavation #dumpylevel #constructionsurveying #civilengineering