Page 121 - Trenchless Technology Piping Installation and Inspection

Existing Pipeline Renewal and Replacement Methods 87

5.5 The cured pipe material (CIPP) shall conform to the struc-
tural properties, as listed in Table 2.7∗.
5.6 The required structural CIPP wall thickness shall be based
as minimum, on the physical properties in Sec. 5.5 or greater
values if substantiated by independent lab testing and in
accordance with the design equations in the App. X1.
Design considerations of ASTM F1216-09, and the follow-
ing design parameters:

Design safety factor (typically used value) = 2.0
Retention factor for long-term flexural modulus = 50–75%
to be used in design
(As determined by long-term tests described in
Sec. 5.2 and approved by the owner)
a
Ovality (calculated from X1.1 of ASTM = %
F1216-09)
Enhancement factor, K = See Sec. 5.3
Groundwater depth (above invert of existing = ft
pipe) a
Soil depth (above crown of existing pipe) a = ft
Soil modulus b = psi
Soil density b = pcf
Live load b = H20 Highway
Design condition (partially or fully deteriorated) c = c

Denotes information, which can be provided here or in inspection
a
videotapes or project construction plans. Multiple lines segments
may require a table of values.
Denotes information required only for fully deteriorated design
b
conditions.
Based on review of video logs, conditions of pipeline can be fully
c
or partially deteriorated.
(See ASTM F1216-09 Appendix). The owner will be sole judge as to
pipe conditions and parameters utilized in design
5.7 Any layers of the tube that are not saturated with resin
prior to insertion into the existing pipe shall not be included
in the structural CIPP wall thickness computation.
6. Testing requirements
6.1 Chemical resistance—The CIPP shall meet the chemical
resistance requirements of ASTM F1216-09, App. X2. CIPP

∗Please see “Table 2.7. Minimum CIPP Cured Polyester Composite Physical
Properties”