CRSI

Table 3:
Comparison of Standard Epoxy Coating Field Specifications

Item AASHTO M284-97
(Coating Application,
Fabrication & Field)
ASTM D3963-99
(Fabrication &
Field Only)
ASTM A934-97
(Coating Application
After Fabrication)

Damage

Total bar area covered by patch material shall not exceed 5%

Maximum amount of repaired damaged shall not exceed 2% of surface area in a given foot of bar

Total area covered by patch material shall not exceed 5%

Maximum amount of repaired damaged shall not exceed 2% of surface area in a given foot of bar

Repair

Repair all visible damage; Minimum thickness = 7 mils

Contractor shall be responsible for repair of field damage

Repair all visible damage; Minimum thickness = 7 mils

Repair all visible damage

Storage

Store off the ground on protective cribbing

Cover if stored outdoors for more than 2 months

Store off the ground on protective cribbing

Coated and uncoated steel should be stored separately

Store off the ground on protective cribbing

Cover if stored outdoors for more than 2 months

Bar Identification

Maintain identity of coated bars

Maintain identity (including heat no. & mill tests)of coated bars

Maintain identity (including heat no. & mill tests)of coated bars

Steel Placement

Not specified

Use coated tire wire

Use bar supports coated with or made of dielectric material

Use coated wire

Use bar supports coated with or made of dielectric material

Handling

All systems for handling shall have padded contact areas

Nylon or padded bundling bands

Lift with strong back, spreader bar or multiple supports

Shall not drop or drag bars or bundles

All systems for handling shall have padded contact areas

Nylon or padded bundling bands

Lift with strong back, spreader bar or multiple supports

Shall not drop or drag bars or bundles

All systems for handling shall have padded contact areas

Nylon or padded bundling bands

Lift with strong back, spreader bar or multiple supports

Shall not drop or drag bars or bundles

Concreting

Not specified

Note: use of resilient headed vibrators recommended

Walking on coated bars should be minimized

Note: use of resilient headed vibrators recommended

 

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