Permissible deviations in the position of supports and their elements, values of deflections and sizes of defects in reinforced concrete supports and attachments

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Annex 3.1. Permissible deviations in the position of supports and their elements, the values of deflections and sizes of defects in reinforced concrete supports and attachments. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)

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Table 12

№ p / p	Name (nature) of the defect	Highest value
12.1	Deviation of the support from the vertical axis along and across the line (the ratio of the deviation of the top to its height)
12.1.1	Metal supports	1:200
12.1.2	Reinforced concrete portal supports	1:100
12.1.3	Reinforced concrete single-column supports	1:150
12.1.4	Reinforced concrete portal supports on guys	100 mm
12.1.5	wooden supports	1:100
12.2	Displacement of the support perpendicular to the axis of the overhead line (exit from the alignment)
12.2.1	Single-column supports with a span length:
	up to 200 m	100 mm
	over 200 m	200 mm
	over 300 m, metal poles	300 mm
12.2.2	Portal metal supports on braces with a span length:
	up to 250 m	200 mm
	over 250 m	300 mm
12.2.3	Portal reinforced concrete supports	200 mm
12.3	Deviation of the traverse axis from the horizontal (traverse slope) in relation to its length
12.3.1	For portal supports on braces:
	metal with a traverse length L up to 15 m	L: 150
	metal with a traverse length L of more than 15 m	L: 250
	reinforced concrete	80 mm
12.3.2	For supports:
	metal and reinforced concrete	L: 100
	single rack wooden	L: 50
12.4	Traverse rotation relative to the line axis:
	for wooden poles	5°
	for reinforced concrete single-column supports	100 mm
12.5	Offset of the end of the traverse from the line perpendicular to the axis of the traverse:
	for metal and single-column reinforced concrete poles	100 mm
	for portal reinforced concrete supports on guys	50 mm
12.6	Centrifuged racks of supports and attachments for overhead lines 35 - 220 kV:
12.6.1	Curvature of the column of a single-column free-standing support	10 см
12.6.2	The width of the opening of transverse cracks over the entire surface of the concrete pillar	0,6 mm
12.6.3	The same on racks with strained reinforcement made of high-strength wire	Not allowed
12.6.4	Opening width of longitudinal cracks in concrete if their number in one section is more than two over a length of 3 m	0,3 mm
12.6.5	The area of the through hole in the concrete of the rack	25 см²
12.7	Vibrated racks and support attachments for overhead lines 35 - 220 kV:
12.7.1	Change in the distance between the post and the base of the strut of a complex support compared to the envisaged project	15%
12.7.2	Opening width of transverse cracks over a length of 1 m	0,1 mm
12.7.3	Opening width of longitudinal cracks	0,5 mm
12.7.4	Area of concrete cleavage with exposure of longitudinal reinforcement	25 mm²

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