A Grand Feat for Lower Manhattan

HAKS led the REI joint venture for this ambitious $40 million public works project that reconstructed water mains and utility infrastructure along Grand Street, from Broadway to Essex.  Subsurface challenges included active subways, non-functioning water main valves, active steam lines, underground building vaults extending into the street, and a high density of secondary electrical and communication lines.  Abandoned, heavily reinforced trolley track foundations also interfered with the work.  Continue Reading…

Drones Set to Take Off

Drone-4Unmanned aerial vehicles (UAVs), popularly known as drones, were originally designed to carry out military missions that were deemed too dangerous for humans or for which manned aircraft were impractical. What we would recognize today as drones were jointly developed by Israel and the US during the 1980s and deployed against Iraq during the 1991 Gulf War, and have since become a staple of modern warfare and antiterrorism activities. However, due to ongoing improvements in technology and miniaturization and decreasing costs, the use of drones has since expanded far beyond the military sphere to many other applications, including science, recreation, aerial photography, product delivery, agriculture, law enforcement, surveillance, and even protecting elephants from poachers. Continue Reading…

2017: The Year of the Commuter

As we prepare to ring in the new year, we would like to highlight some projects that will reshape area transportation and ease the way for thousands of commuters.  One improvement will be ready for use as early as January 1st, when the first phase of the Second Avenue Subway opens.  Others should be evident a little later in the year—emotive lighting on bridges and tunnels and the north span of the new Tappan Zee Bridge.  One change is already in place—remnants of a World Trade Center passageway dating to the 1970s.

The HAKS Family wishes you and yours a happy and healthy 2017. Safe travels.
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DC Water Tunnels for Clean Rivers

Contributed by Zaw Soeoo

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Anacostia River Tunnel ISCT Excavation

The District of Columbia Water and Sewer Authority (DC Water) distributes drinking water and collects and treats wastewater for more than 600,000 residential, commercial and governmental customers in the District of Columbia. As part of this mission, DC Water operates the Blue Plains Advanced Wastewater Treatment Plant (BPAWWTP), the largest such facility in the world. The Authority’s $2.6 billion long-term control plan for combined sewer overflows (CSOs), known as the DC Clean Rivers Project, captures CSOs and conveys them to the BPAWWTP for treatment. The Clean Rivers Project is comprised of a system of 20 miles of 23-foot-diameter tunnels at depths from 50 to 160 feet. HAKS is a member of the consultant construction management (CCM) team providing inspection services, including tunnel and near-surface construction, for both the Anacostia River and Blue Plains design-build tunnel projects. Giant tunnel boring machines (TBMs) are being used to bore the underground structures that form DC Water’s solution to CSOs. Continue Reading…

Activation of Manhattan Leg of Third City Water Tunnel

Third Water 1New York City requires 1.3 billion gallons of water daily for its more than 9 million residents. The precarious condition of the city’s aging water tunnels had been its gravest infrastructure threat until October 16th when Mayor Michael R. Bloomberg announced the activation of the final 8.5-mile Manhattan stage of the Third City Water Tunnel. Until this major milestone, Tunnel No. 1 was so critical that the city couldn’t turn it off to inspect it. “If we were to lose one of the tunnels without backup, that part of the city would be uninhabitable,” said Bloomberg. Continue Reading…