2010 Construction and Material Specifications - Ohio Department of ...

706.02
and 5 for a size and D-load as accepted designs. Where here different concrete
strengths are listed in the tables, use the higher concrete. In addition, steel areas,
interpolated as above between Table 706.02-1 and Table 706.02-2, 2, 36 36-inch (900
mm) through 108-inch inch (2700 mm) using the higher concrete strength, and
interpolation of the circumferential steel between Table 706.02-3 3 and Table
706.02-4 4 using the wall thickness and stirrup designs in Table 706.02 706.02-4, are
accepted designs. Pipe manufactured according to an accepted d pipe design will be
accepted, at the option of the Laboratory, according to the basis of acceptance
described in Section 4.1.1 or 4.1.2.
Provide reinforced concrete pipe with S-stirrups stirrups according to Figure 1
(Figure 1M) and the following requirements:
1. Provide steel conforming to 709.08, 709.10, 709.11, or 709.12.
Ensure that the wall thickness, amount of circular reinforcement, S-stirrup stirrup system,
and concrete strength comply with Tables 706.02-2, 706.02-3, 3, and 706.02 706.02-4.
Ensure that the spacing center-to-center center of adjacent inner rings of circumferential
reinforcement in a cage does not exceed 4 inches (102 mm) for pipe up to and
including pipe having a 4 inches (102 mm) wall thickness or exceed wall
thicknesses for larger pipe and in no case exceed 6 inches (152 mm).
2. Ensure that each line of S-stirrups stirrups have a continuous “S” shape
extending longitudinally from end to end of the pipe. Ensure that they extend from
the inner cage toward the outer surface of the pipe for a distance not less than the
minimum amplitude. Ensure that S-stirrups stirrups pass around and are in contact with
each inside circumferential member of the inner cage. Ensure that each line of Sstirrups
lie essentially in a plane passing through the longitudinal axis of the pipe.
3. Where more re than one length of stirrup material is used per line,
make a lap round one circumferential member of the inner cage. Ensure that the
ends of “S” shaped stirrups at splices include an outer bend. Do not use more than
three lengths of “S” material in a line and ensure that the minimum length of a
section of S-stirrups is 30 inches (0.76 m).
Illustrative Example of S-Stirrup Support System for 0.01-inch inch Crack DD-load
3000,
102-inch diameter Pipe Minimum Area Per Support 0.053 square inch, 11 Lines Spaced @ 5
1/8 inches. For other classes and sizes, see Tables 706.02-2, 2, 3, and 4.
702