Underground Construction - December 2017 - 46

EDUCATION
presentation will discuss the important considerations
when designing and permitting trenchless crossings
beneath USACE flood control projects. It will also highlight the critical nature of ensuring plans and permit
requirements are executed and documented during
construction.
9-9:25 a.m.
Maximize Capacities to Address High-Profile,
New Development Impacts
Speaker: Chris Brooks, P.E., Senior Project Manager,
RJN Group Inc.
Wastewater flows in the Village Creek Basin are expected to increase by 18 MGD due to new development.
Previously, a relief interceptor was designed through a
highly congested corridor along the Arlington and Fort
Worth border, including a 681-LF, hand-dug, 70" NAS
tunnel liner plate. Revised plans to maximize carrying
capacities in the new relief pipeline resulted in a nearly
19% increase, from 48" to 51" diameter. Downstream,
an increase from 54" to 66" diameter nearly doubled
capacity. This presentation will discuss how a 130-MGD
total capacity was achieved for a final $366,457 change
order cost.

9:30-9:55 a.m.
Tampa Junction Emergency Repair Combines Two
Rehab Solutions
Speaker: Andrew Costa, Area Manager of Business
Development, Insituform Technologies LLC
A recent project in the Tampa area combined methods
to provide full rehabilitation for three different pipelines. FRP was used on separate segments of ductile
iron pipelines measuring 66", 90" and 96" diameter,
connecting to a wastewater junction chamber. CIPP
was chosen for a 150' section of 66" pre-stressed
concrete cylinder pipeline. Project challenges included
access, weight restrictions, and coordination with contractors and plant operations. Access issues were roof
removal, tower setup inside the vault and tight access
at the termination. Coordination with plant personnel
enabled each line to be isolated and mechanical
removal of large, bulky pipe segments.
10-10:25 a.m.
Montgomery County's Design-Bid-Build Approach
Uses Innovative Reline Solution
Speaker: Hugh Mickel, P.E., Director-Reline
Technologies, Contech Engineered
Solutions LLC
Montgomery County (Maryland) officials used the
traditional design-bid-build approach to lining a 96"
diameter, 470' long culvert under Germantown Road

with an 84" diameter spiral rib, aluminized type 2
corrugated steel pipe. When prep work began inside
the culvert with workers securing their internal bypass
piping, a section of culvert deflected downward and
inward about two inches. The workers reached safety,
and engineers placed temporary struts and poured a
concrete working surface in the invert. Then, an aluminum tunnel plate lined the pipe. This presentation will
review challenges and solutions on this culvert reline
under 26' of cover.
10:30-11:55 a.m.
City Panel Discusses Buried Infrastructure Asset
Management
Moderator: John D'Antoni, Water Regional Asset
Management & Planning Leader, Black &
Veatch
Panelists: P.S. Arora, P.E., Director of Wastewater,
City of Denton;
Shannon Dunne, Acting Senior Assistant
Director-Wastewater Operations,
City of Houston;
Fazle Rabbi, Asset Management Initiative
Leader, City of Houston;
Riazul Mia, P.E., Utilities Director,
City of Laredo;
Travis Michel, Infrastructure Manager,
Lockwood, Andrews & Newnam Inc.

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Underground Construction December 2017

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Underground Construction - December 2017

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