people at WAL•MART need the aisles open during business
hours so this was a night job.
main sewer line from the store was in serious need of replacement
and ran the length of the store. As with many WAL•MART
locations, the store features a McDonalds restaurant inside.
The original pipe was made of cast iron which suffered severe
corrosion from cola which was present inn the drainage from
the restaurant over a period of years. Lompoc's Plumbing Inspector
would not allow PVC and insisted on ABS replacement. All the
old cast iron pipe was replaced with ABS (which was fused
ahead of time) to resist corrosion occurring again, and the
entire job laid a total of 400' of 4' and 6' pipe.
pits had to be dug requiring a concrete saw to extract sections
of flooring which would be replaced as covers during operation
hours of the store. The job took three days, disruption to
staff and customers alike was minimal and even WAL•MART
was relieved at the difference in cost by going trenchless!
methods of replacement would have caused serious interruption
to business, would have taken at least a month to complete
and restorations costs would have been very high.