Emergency Services

CDI is prepared to respond swiftly to structural emergencies, worldwide. Regardless of the cause of collapse, CDI can draw on its unparalleled progressive failure database and professional, third-party structural consultants to work with governmental agencies, property owners and contractors in stabilizing dynamic conditions, setting the stage for subsequent forensic investigation into the cause of the collapse, and emergency demolition operations as may be needed.

DEMOLITION FAILURES

Tappan Zee Bridge, East Anchor Span – Tarrytown/Nyack, New York


 

Project: Tappan Zee Bridge - East Anchor Span
Date: 01.15.2019
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An Unstable Situation

CDI performed the preparation for and successful explosives operations toward the felling of the Tappan Zee Bridge east anchor span on the Hudson River in Tarrytown, New York on Tuesday, January 15, 2019.

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CONSTRUCTION FAILURES

Sheikh A. Alakl Residential & Commercial Center – Jeddah, Saudi Arabia

Half of the 17-story Sheikh A. Alakl Apartment Building in Jeddah, Saudi Arabia collapsed when portions of the new reinforced concrete facility were overloaded during final stages of construction. At the request of Bechtel, CDI’s team mobilized to the site in less than 24 hours, prepared the central-core, flat slab, reinforced concrete structure in another 27 hours and put the balance of the building on the ground with absolute safety just 96 hours after the start of demolition preparations. The “arm’s-length” nature of CDI’s operations, combined with our rapid response capabilities and international network of resources make CDI the natural choice in dealing with structural emergencies, worldwide.

EARTHQUAKE DAMAGED STRUCTURES

Radio Network House – Christchurch, New Zealand

Following a request made by the Government of New Zealand to the US Department of State, CDI’s President, Mark Loizeaux, lead a team of technical experts from the US Army Corp of Engineers and the commercial demolition sector to review buildings that had structurally failed, yet remained standing following the 2011 earthquake in Christchurch. In that review, the team of experts inspected each major structure, interviewed local demolishers to determine their capabilities/experience and ultimately offered an opinion on the ? means and methods available, to bring each structure safely to grade.


Watch HERE for the Radio Network House implosion.


While several of the major structures were demolished by conventional methods the decision was made to use an implosion approach for the 14-story, reinforced concrete Radio Network House.  CDI designed a preparation plan that was executed in less than a week and the damaged structure was safely brought to grade, exactly per plan.

An earthquake-damaged historic structure across the street was not damaged further by the implosion and a third-party property, less than 4 meters away, was unaffected by the implosion, as well.  

Colonia Roma – Mexico City, Mexico

After the 1985 earthquake, CDI was called to Mexico City by the US Department of State to assist local authorities in the demolition of structures that were still standing despite severe structural damage. CDI’s in-house engineering capabilities and field analysis of the structural damage permitted rapid demolition design.

While preparing numerous structures for implosion, CDI also provided guidance to over 400 employees of four Mexico City-based general contractors on the conventionally demolition of dozens of other structures.  In total, CDI demolished 26 structures, sometimes as many as 4 in 1 day in various parts of the shattered city without a single injury to workers or contractors who supported our effort.

FIRE DAMAGED STRUCTURES

Cuneo Press Buildings Chicago, Illinois

The Cuneo Press Buildings stood vacant for years as the City of Chicago tried to redefine the redevelopment of the City’s industrial complex. An intermittent owner stored used tire casings in two of the structures. A fire developed, causing major structural damage, not only resulting in the condemnation of the 8-story structures, but causing the City to declare them “out of bounds” due to the extreme impact of high temperatures and partial failure of one of the buildings’ structural system.

Under extreme political constraints and critical deadlines, CDI was selected by the City of Chicago to work with a local demolition contractor to fell the fire damaged structures so the site could then be cleared. In a fast track operation that involved the participation of a multitude of city agencies walking the edge of their specific mandates, we were able to prepare and fell the structures with absolute safety to adjacent interstate routes, rail lines, city streets and river retaining walls which were already vulnerable because of pre-existing damage.

BOMB DAMAGED STRUCTURES

Alfred P. Murrah Federal Building – Oklahoma City, Oklahoma

When a crime scene involves the detonation of explosives, and the possibility of undetonated materials exists, an experienced contractor is needed to preserve evidence critical to ongoing investigations while dealing with the discovery of undetonated explosives. Responding first to the request of the General Services Administration (GSA) on an engineering basis to support FEMA’s response, and subsequently to the Federal Bureau of Investigation (FBI), CDI was able to assist in analyzing the integrity of the unstable Alfred P. Murrah Federal Building in Oklahoma City.

Our team coordinated with FEMA’s rescue and recovery efforts, salvaged DOJ documents from the structure, assisted in collection of evidence for the FBI’s investigation, prepared the building for implosion and completed the demolition sequence, all in a  continuous work program. CDI is equipped and hold the clearances to work closely with governmental agencies under complex project scenarios that demand professionalism and attention to detail while working under difficult site, political and emotional conditions.

Project: Tappan Zee Bridge - East Anchor Span
Date: 01.15.2019
CLOSE

An Unstable Situation

CDI performed the preparation for and successful explosives operations toward the felling of the Tappan Zee Bridge east anchor span on the Hudson River in Tarrytown, New York on Tuesday, January 15, 2019.

Learn More About This Project