Upcoming Events

Second Avenue Subway Tunnel Expansion Project

October 17, 2017


The Second Avenue Subway is the new line extending approximately 8.5 miles along Manhattan’s East Side from 125th Street in Upper Manhattan to Hanover Square Lower Manhattan. The first construction contract was awarded to S3 (Skanska, Schiavone and Shea Joint Venture) in March 2007, and now has been recently completed.


The project includes construction of a Launch Box for the tunnel boring machine (TBM) between 92nd Street and 95th Street and the bored tunnels from 63rd Street to 92nd Street. The Launch Box excavation is 55 to 65 feet deep, occupying the whole width of 2nd Avenue and is constructed by cut-and-cover method. The southern half of 96th Street Station is also constructed within the Launch Box excavation.


This presentation discusses the critical issues and construction constraints and challenges of the construction of the Launch Box and subsequently the Tunnel Boring Machine (TBM) work. These include the challenges of maintaining the traffic and utilities at 2nd Avenue while constructing the Launch Box, the support of excavation systems, construction sequence, TBM tunneling work, and finally the tunnel waterproofing and concrete tunnel liner work.


5:30-6:30 - Registration/Happy Hour

6:30-8:30 - Dinner/Presentation


Alaeden Jlelaty has over thirty years of experience in the construction industry and has been involved in projects including highways, tunnels, bridges, street work, water treatment plants, architectural buildings, and transit stations.


Alaeden has a Bachelor Degree in Civil Engineering and a Master Degree in Civil Engineering from the Cooper Union School of Engineering in NY City. He is the Winner of the Dubai, Arabian Tunneling Awards, 2017 Tunnel Leader and Innovator, Guest Lecturer at Columbia University, School of Engineering, and the Colorado School of Mines in Golden, Colorado.


Maggiano's Center City

1201 Filbert Street

Philadelphia, PA 19107

Click Here For Map

RSVP by October 11, 2017

$50/Person for DVASE Members

$55/Person for ICRI Members

$65/Person for Non-Members

Everyone is Welcome to attend

Space is Limited to 80 People so Don't Delay!

Event Registration

If you will be paying by Cash or Check, or registering as a Gold or Silver ICRI sponsor, RSVP prior to the deadline by contacting Pat Gallagher at 610-636-6286 or by email.