La. Admin. Code tit. 70, § II-1909 - Materials
A. The replacement
pipe used in pipe bursting operations shall be High Density Polyethylene (HDPE)
Pipe manufactured from a high density, high molecular weight polyethylene resin
which conforms to ASTM D-1248 and meets the requirements for Type III, Class A,
Grade P34, Category 5, and has a PPI rating of PE 3408, when
compounded.
B. The pipe produced
from this resin shall have a minimum cell classification of 345434D or E (inner
wall shall be light in color) under ASTM D3350.
C. All pipe shall be made from virgin
material. No reworked material shall be used except that obtained from the
manufacturer's own production of the same formulation.
D. Before commencement of work, the permittee
shall submit to the DOTD for approval, the vendor's specific technical data
with complete physical properties of pipe and pipe dimensions pertinent to the
job.
E. The Standard Dimension
Ratio (SDR) Classification for various depths shall be as follows.
1. The Standard Dimension Ratio (SDR), which
is the ratio of the outside diameter (OD) of the pipe to its minimum wall
thickness, shall be specified for the various depths listed in Table
I.
2. The depth shall be measured
from the upstream and downstream manhole rim to the invert of the existing
sewer in the pipe segment to be replaced.
3. The SDR shall be selected for the deeper
of the two manholes for a given pipe segment.
Table I |
|
Polyethylene Pipe SDR |
|
(Applicable SDR for Depth Range) |
|
HDPE Pipe SDR |
Maximum Depth (Feet) |
21 |
10 |
17 |
20 |
Notes
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