Table 2 Classification of excavations... | Emerald Publishing

Table 2

Classification of excavations according to adjacent environment (SUCTC, 2010)

Neighbouring conditions (type of structures and other properties adjacent to excavations)	Distance away from the excavation, s	Protection level
Historic buildings, industrial plants with precise equipment and machinery, important buildings on shallow foundations or short pile foundations, metro tunnels, flood walls and other important infrastructures such as water, gas and sewer networks	s ≤ H	I
	H < s ≤ 2H	II
	2H < s ≤ 4H	III
Normal buildings on shallow foundations or short pile foundations, infrastructures such as water, gas and sewer networks	s ≤ H	II
	H < s ≤ 2H	III

Neighbouring conditions (type of structures and other properties adjacent to excavations)	Distance away from the excavation, s	Protection level
Historic buildings, industrial plants with precise equipment and machinery, important buildings on shallow foundations or short pile foundations, metro tunnels, flood walls and other important infrastructures such as water, gas and sewer networks	s ≤ H	I
	H < s ≤ 2H	II
	2H < s ≤ 4H	III
Normal buildings on shallow foundations or short pile foundations, infrastructures such as water, gas and sewer networks	s ≤ H	II
	H < s ≤ 2H	III

H, excavation depth