consequent results
Manhole Structure
Manhole 48"
Shallow Manhole 48"
Shallow Manhole 24"
Y3K Manhole
Pipe Riser Manhole 72"
Pipe Riser Manhole 72" w/ flat slab top
Pipe Riser Manhole 96"
Pipe Riser Manhole 96" w/ flat slab top
GU Sealplate Folder
GU Sealplate Flyer
testing method
procedures for ordering
order sheet
drawing in AutoCAD format
print view
back to products
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Note for water in(ex)filtration testing at pipe/bell joints

There is no correlation between vacuum (air) and hydrostatic tests (see ASTM C1244-93).

Vacuum testing coupled with the presence of hydrostatic pressure (high ground water) provides unreliable test results. Due to inaccurancies; GU companies shall not be responsible should seal failure occur.