INGAL ET-SS, Руководство по эксплуатации продукта

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10
Release 07/19
ET-SS
Tangent End Terminal
5.0 ET-SS System Offset Requirements
The ET-SS System is a tangent guardrail end treatment
that is assembled parallel to the edge of shoulder. At
the sole discretion of the state/specifying agency design
engineer, the ET-SS System may be offset away from the
shoulder over the length of the entire system (from centre
of last splice location of ET-SS System to center of Post 0)
per the following designer approved offsets:
Test Level 1
(TL-1)
Test Level 2
(TL-2)
Test Level
3(TL-3)
152 mm
Maximum
305 mm
Maximum
610 mm
Maximum
Caution: Under no circumstances shall the
rail within the ET-SS System be curved.
5.1 Offset Requirements Within A Curve
When the guardrail is terminated within a curve (convex
or concave) and a ET-SS System is attached, the following
instructions must be followed to ensure proper offset
requirements within a curve for the ET-SS System are
met. If the conditions below cannot be achieved, it is
recommended that the guardrail be extended past
the curve until the conditions can be met. The offset
requirements in a curve are calculated for the TL-3 ET-
SS System. If assembling a TL-1 or TL-2 ET-SS System,
an overall straight length of 15.48 m must be obtained
(ET-SS W-Beam Guardrail) for calculating offset
requirements in a curve.
Note: Using an offset closer to 0 m on tighter curves
(radii) will cause the terminal to encroach on to the
shoulder.
Figure 1: Preferred Grading (not to scale)
Figure 2: Alternative Grading (not to scale)