SECTION 051200 - STRUCTURAL STEEL FRAMING

Post Heat/Cool Down of “Seismic Critical Welds”: For groove welds in base metal 1-1/2 inches thick or larger, or if the ambient temperature is likely to be lower than 50 F in the 8 hours following termination of welding, insulating blankets or other means shall be employed to limit the rate of cool down to no more than 30 F per hour. ................
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