Table 9.
Comparison of standard of estimated unit and actual construction cost

Classification			Unit	Standard of estimated unit	Actual construction cost	Rate (%)
Street tree pruning	Heavy pruning	11 less	per tree	62,919	71,603	88
		11-21 less	per tree	89,693	93,119	96
		21-31 less	per tree	120,638	104,406	116
		31-41 less	per tree	148,451	128,391	116
		41-51 less	per tree	178,874	163,663	109
		51 or more	per tree	229,847	198,582	116
	Light pruning	11 less	per tree	38,529	89,239	43
		11-21 less	per tree	58,462	108,286	54
		21-31 less	per tree	80,250	124,864	64
		31-41 less	per tree	102,560	153,081	67
		41-51 less	per tree	124,807	186,590	67
		51 or more	per tree	146,595	251,843	58
Shrub pruning		Less 0.9m	m2	9,016	11,973	75
		0.9m or more	m2	14,873	16,902	88
Watering of water sprinkler truck		1,800L	m2	1,157	797	145
		3,800L	m2	807	655	123
		5,500-6,500L	m2	424	498	85
Weeding			m2	1,259	1,362	92
Tree fertilization		11 less	per tree	6,249	8,069	77
		11-21 less	per tree	7,910	8,947	88
		21-31 less	per tree	9,395	10,328	91
		31-41 less	per tree	11,012	12,210	90
		41-51 less	per tree	12,498	13,841	90
		51 or more	per tree	14,159	16,727	85
Shrub fertilization			m2	1,567	1,447	108
Chemical spraying(machine)			L	263,092	212,182	124
Windbreak wall installation		H = 0.45m	m	12,660	14,118	90
		H = 0.9m	m	17,464	18,925	92