AWWA_M45-2005玻璃钢管道设计规程(美国水工协会)

AWWA_M45-2005玻璃钢管道设计规程(美国水工协会)

Addendum to

AWWA Manual M45, Fiberglass Pipe Design

(Approved by the AWWA Standards Council on Sept. 11, 2006.)

p. 63, Table 5-4, Note 2 should read as follows:

2. SC1 soils have higher stiffness than SC2 soils, but data on specific soilstiffness values are not available at the current time. Until such data are available, thesoil stiffness of placed, uncompacted SC1 soils can be taken equivalent to SC2 soilscompacted to 95% of maximum standard Proctor density (SPD95), and the soilstiffness of compacted SC1 soils can be taken equivalent to SC2 soils compacted to100% of maximum standard Proctor density (SPD100). Even if placed uncom-pacted (i.e., dumped), SC1 materials should always be worked into the haunch zoneto assure complete placement, see Sec. 6.7.3.

p. 80, Table 6-1, Note 3 should read as follows:

3. SC1 soils have higher stiffness than SC2 soils, but data on specific soilstiffness values are not available at the current time. Until such data are available, thesoil stiffness of placed, uncompacted SC1 soils can be taken equivalent to SC2 soilscompacted to 95% of maximum standard Proctor density (SPD95), and the soilstiffness of compacted SC1 soils can be taken to be equivalent to SC2 soilscompacted to 100% of maximum standard Proctor density (SPD100). Even ifplaced uncompacted (i.e., dumped), SC1 materials should always be worked into thehaunch zone to assure complete placement, see Sec. 6.7.3.