00812.80 855 Section 00812 - Adjusting and Repairing Guardrail Description
00812.00 Scope - This Work consists of adjusting and repairing existing guardrail as shown or
directed. Materials
00812.10 Materials - Furnish replacement metal beam rails, posts, blocks, and hardware meeting
the requirements of 00810.10. Constructi on
00812.40 General - Install all guardrail components during the same Day they are removed. Repair
minor damage to galvanizing according to ASTM A780. Minimum zinc content for Method A2 is 94 percent on the dry film .
00812.41 Adjusting Guardrail - Adjust existing guardrail by one of the following methods:
a.Posts Remain in Place: • Remove the existing metal beam rails and blocks in a manner that will not damage galvanizing. • If required, drill new bolt holes in posts . • Treat all existing and all new holes with a preservative from the QPL. • Reinstall the metal beam rails and blocks. • Perform all other required Work as shown.
b.Replace Posts : Do not raise existing posts. Replace posts as necessary according to 00812.43 to achieve required guardrail height. Backfill and compact any voids caused by removal of the post before installation of the new post.
c.Replace Blocks - Replace blocks according to 00812.43.
d.Terminal Ends - Adjust existing terminal ends by r aising the Soil tubes and ground struts to the required height and placing and compacting matching M aterial under the ground struts.
00812.43 Repairing Guardrail - Repair existing guardrail by replacing metal beam rails, posts,
blocks, and hardware. In stall new metal beam rails, posts, blocks, and hardware according to 00810.42 and 00810.43. Measurement
00812.80 Measurement - The quantities of Work performed under this Section will be determined as
follows: • Adjusting Guardrail - Adjusted guardrail will be measured on the length basis, of existing guardrail adjusted. Measurement will be by one of the following methods: 00812.90 856 • Count Method - The number of standard sections will be counted and multiplied by 12 1/2 feet. For purposes of this S ubsection, a standard section is defined as 12 1/2 feet of complete guardrail, without regard to the number of existing posts or existing rail elements. Non- standard sections will be measured from center of post to center of post and added to the total calculated length of the standard sections for each run. • Length Method - Measurement will be from center to center of terminal end posts, or as otherwise shown, along t he line and grade of each run of each type. • Repairing Guardrail - Repaired guardrail metal beam rails, posts, and blocks will be measured on the unit basis. For purposes of this Subsection, a metal beam rail is defined as 12 1/2 feet long. Payment
00812.90 Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement, for the following items: Pay Item Unit of Measurement
a.Adjusting Guardrail ............................................................................... Foot
b.Metal Beam Rails .................................................................................. Each
c.Guardrail Posts ..................................................................................... Each
d.Guardrail Blocks .................................................................................... Each Payment will be payment in full for furnishing and placing all Material s, and for furnishing all Equipment , labor, and Incidental s necessary to complete the Work as specified. No separate or additional payment will be made for: • hardware • adjusting terminal ends • replacement metal beam rails, posts, and blocks that are damaged by Contractor Equipment or operation
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 921–922 of 1,268. View official source ↗