Smooth - wall Steel Pipe Culvert

2026-11-03

• Smooth - wall Steel Pipe ( SSP ) in accordance with AREMA , Chapter 1 . Pipe material shall be in accordance with ASTM international A139 . Pipe shall be Grade B and steel shall have a minimum yield strength of 35ksi . • SSP pipes shall have a welded straight longitudinal seam . Spiral seam is acceptable if 25 % of weld is ultrasonically tested by an outside testing agency for the manufacturer in addition to required tensile tests of weld . The ends of each section of pipe shall be square cut with one end suitably beveled . • Circumferential / splice welds will be allowed under the following conditions : o Splices shall be welded with CJP groove type welds using a 0 . 25 ” minimum backing ring with a single bevel groove weld as required by , and in accordance with , AWS D1 . 1 . o No more than one splice per pipe o Splice welds must be 10 ’ or less from the end of the pipe o Splice welds shall be 100 % visually tested and a minimum of 25 % ultrasonic tested . In the event an inclusion is found , the weld shall undergo 100 % UT . • A total of 25 pipes are required : 6 ea . at 18 ” diameter , 6 ea . at 24 ” diameter , 10 ea . at 36 ” diameter , and 3 ea . at 48 ” diameter . • Label each pipe with the corresponding milepost using marker paint . Label should be located on the outside of the pipe approximately 5 ’ from both ends – 2 labels per pipe . • Expected delivery date is May 1 , 2026 to Birchwood Yard , Chugiak , AK ( 61 . 417793 , - 149 . 496924 ). • No less than 2 weeks of notice is to be given to the ARRC Project Manager on delivery date , as ARRC will need to coordinate manpower to unload the pipes at the yard . • Certified mill test reports ( CMTR ) must be sent and approved prior to the shipping of materials . • 3 M ’ s – pipes need to be mined , melted , and manufactured in the United States .

Alaska

2026-03-27