Criteria for Restoration of Longitudinal Barriers (2010) / Chapter Skim
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Chapter 16 - A Field Guide for the Restoration of Longitudinal Barriers
Chapter 16 - A Field Guide for the Restoration of Longitudinal Barriers
Pages 84-89
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From page 84... ...
Repair priority scheme. Priority Level Description High A second impact results in unacceptable safety performance including barrier penetration and/or vehicle rollover.
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From page 85... ...
Damage Mode Repair Threshold Relative Priority Measurement One or more of the following thresholds: More than 9 in. of lateral deflection anywhere over a 25-ft length of rail Top of rail height 2 or more inches lower than original top of rail height High Post and Rail Deflection 6-9 in.
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From page 86... ...
. Damage Mode Repair Threshold Relative Priority Measurement Missing/Broken Posts 1 or more posts Missing Cracked across the grain Broken Rotted With metal tears High Missing Post Missing Blockout Any blockouts Missing Cracked across the grain Cracked from top or bottom of blockout through post bolt hole Rotted Medium Twisted Blockouts Any misaligned blockouts and the top edge of the block is 6 in.
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From page 87... ...
wide Note: for horizontal tears less than 12 in. in length or less than 0.5 in.
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From page 88... ...
of movement when pushed down by hand Medium Cable Anchor Bracket Loose or not firmly seated in rail Medium Cable Anchor Bracket 1" Stub Height Height which exceeds 4 in. Medium 88 Table 37.
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From page 89... ...
High (Missing Bearing Plate) (Correct Bearing Plate)
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