Underground Construction - November 2021 - 37
EDITION 69 | NOV 2021 | NASSCO.ORG
Reconstruction is another activity that may be
incidental; however, more extensive work may be
listed as separate line items, such as seed/sod,
asphalt, concrete, etc.
Specifications
All of the rehabilitation recommendations that
the owner is not performing will be included as
separate items in the bid tabulation. And each item
will identify how it is to be measured and paid: per
each, per linear foot, per cubic yard, etc.
The technical specifications specific to the project
will contain the details of each rehabilitation
method, including materials, installation
requirements, testing requirements, etc. The
specifications also need to define submittals
and testing required, as well as warranty
considerations.
Submittals/Testing/Warranty
Submittal requirements, testing needs, and the
desired warranty period must be defined within
the specifications to ensure that the work is being
performed correctly and that the rehabilitation will
meet its expected service life.
Submittals may be required before, during, or
after the specified rehabilitation. All submittals
should be reviewed to ensure compliance with
the specification. Submittals may be calculations,
material submittals, samples of the installed
product, etc.
LEFT: Manhole vacuum testing. ABOVE: Manhole rehab.
Testing should be conducted at the time of the
rehabilitation and may involve thickness testing
or vacuum testing. These are defined by the
manufacturer or ASTM standards.
Rehabilitation products are typically warrantied for
one year, but that timeframe can be extended for
an additional cost. Extended warranties should
be included as a separate bid item. If the owner
desires a warranty extension, they need to have
the capacity and capability to perform asset
inspections in the months before the end of the
warranty.
Bidding and Construction
The technical specifications will get rolled into
the entire bid package to be advertised. Manhole
rehabilitation is specialized work and is usually bid
as a separate project or sub-contracted out if it is
included in a larger project.
While manholes are generally taken for granted,
ensuring they operate as designed is vital to
ensuring sewer systems can be maintained and
adequately convey flows. Regular inspections
using MACP standards and then following up
and rehabilitating structures with deficiencies
are required to keep manholes performing in the
sewer system as intended.
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Underground Construction - November 2021
Table of Contents for the Digital Edition of Underground Construction - November 2021
Contents
Underground Construction - November 2021 - Cover1
Underground Construction - November 2021 - Cover2
Underground Construction - November 2021 - Contents
Underground Construction - November 2021 - 4
Underground Construction - November 2021 - 5
Underground Construction - November 2021 - 6
Underground Construction - November 2021 - 7
Underground Construction - November 2021 - 8
Underground Construction - November 2021 - 9
Underground Construction - November 2021 - 10
Underground Construction - November 2021 - 11
Underground Construction - November 2021 - 12
Underground Construction - November 2021 - 13
Underground Construction - November 2021 - 14
Underground Construction - November 2021 - 15
Underground Construction - November 2021 - 16
Underground Construction - November 2021 - 17
Underground Construction - November 2021 - 18
Underground Construction - November 2021 - 19
Underground Construction - November 2021 - 20
Underground Construction - November 2021 - 21
Underground Construction - November 2021 - 22
Underground Construction - November 2021 - 23
Underground Construction - November 2021 - 24
Underground Construction - November 2021 - 25
Underground Construction - November 2021 - 26
Underground Construction - November 2021 - 27
Underground Construction - November 2021 - 28
Underground Construction - November 2021 - 29
Underground Construction - November 2021 - 30
Underground Construction - November 2021 - 31
Underground Construction - November 2021 - 32
Underground Construction - November 2021 - 33
Underground Construction - November 2021 - 34
Underground Construction - November 2021 - 35
Underground Construction - November 2021 - 36
Underground Construction - November 2021 - 37
Underground Construction - November 2021 - 38
Underground Construction - November 2021 - 39
Underground Construction - November 2021 - 40
Underground Construction - November 2021 - 41
Underground Construction - November 2021 - 42
Underground Construction - November 2021 - 43
Underground Construction - November 2021 - 44
Underground Construction - November 2021 - 45
Underground Construction - November 2021 - 46
Underground Construction - November 2021 - 47
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Underground Construction - November 2021 - 49
Underground Construction - November 2021 - 50
Underground Construction - November 2021 - Cover3
Underground Construction - November 2021 - Cover4
Underground Construction - November 2021 - UCT1
Underground Construction - November 2021 - UCT2
Underground Construction - November 2021 - UCT3
Underground Construction - November 2021 - UCT4
Underground Construction - November 2021 - UCT5
Underground Construction - November 2021 - UCT6
Underground Construction - November 2021 - UCT7
Underground Construction - November 2021 - UCT8
Underground Construction - November 2021 - UCT9
Underground Construction - November 2021 - UCT10
Underground Construction - November 2021 - UCT11
Underground Construction - November 2021 - UCT12
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