Aerial Pipe Support Detail - 39B
This PDF document may not meet current accessibility standards (WCAG 2.1 AA) and may not be fully usable with assistive technologies.
If you require access to the information in a more accessible format, please e-mail webstaff@johnstonnc.gov and we will provide an alternative version as soon as possible. A machine-generated text version is also available below.
We apologize for any inconvenience and appreciate your understanding as we work toward full accessibility compliance.
If the document does not display above, download the PDF.
Text version (machine-generated from the PDF)
NOTES FOR AERIAL CROSSING 1 STEEL CASING PIPE SHALL BE SPIRAL WELDED OR SMOOTH WALL SEEMLESS WITH A MIN YIELDSTRENGTH OF 35,000 PSI REQUIREMENTS SHOWN IN TABLE BELOWALLOWABLE SPANS FOR STEEL CASING PIPE CARRIER PIPE, RJ DIP DIAMETER IN CASING PIPE, STEEL DIAMETER IN MIN CASING PIPE WALL THICKNESS IN ALLOWABLE SPAN FT 6 14 03750 40 8 16 03750 45 10 17 03750 50 12 20 03750 50 14 24 03750 55 16 26 03750 55 18 30 03750 60 20 32 03750 60 24 36 04375 65 30 42 04375 65 36 48 05000 65 40 56 05000 65 2 RESTRAINED JOINT PIPE AND FITTINGS SHALL CONSIST OF BOLTED RETAINER RINGS AND WELDERRETAINER BARS OR BOLTLESS TYPE WHICH INCLUDE DUCTILE IRON LOCKING SEGMENTS AND RUBBERRETAINERS RESTRAINED PIPE AND FITTINGS MEET REQUIREMENTS SET IN JOHNSTON COUNTYSTANDARD SPECIFICATIONS3 NEOPRENE BEARING PADS SHALL BE FORMED FROM PREVIOUSLY UNVULCANIZED, 100 VIRGINNEOPRENE WITH DUROMETER HARDNESS OF 504 IF ENGINEERED DESIGN REQUIRES PILES, THE CALCULATIONS AND ALTERNATE DESIGN MUST BESUBMITTED FOR APPROVAL PRIOR TO INSTALLATION