At more than 1,000 feet long, 250 feet wide, and 170 feet tall each, two blimp hangars constructed in the 1940s at Moffett Field are among the world’s largest clear-span timber structures. One of these hangars had significant damage to many of its timber truss arches, and the damage was progressing along the length of the hangar to the extent that there was concern the hangar, or portions of it, could collapse. Power retained Liftech to design systems to stabilize and provide access so Power could safely perform repairs.
Liftech designed an access shoring tower system and strand jack assembling system. The access system is 80 feet x 80 feet x 130 feet tall. It is designed to shore and jack the hangar roof from its deck and facilitate access to the roof with an array of equipment on its deck including lifts and cranes. It is designed for asymmetric shoring, can resist large lateral loads, and can tip onto one side in an earthquake.
A 20-foot-wide, 22-foot-tall, 200-foot-long wooden box beam above the hangar doors had deteriorated and sagged down onto the nested sliding door system. Liftech designed a jacking procedure and jacking system so Power could raise and repair the box beam.
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Early Thursday morning, December 3, the extraordinary floating Fire Station 35 arrived in San Francisco at Pier 22-1/2 near the Bay Bridge.
A majestic sight greeted Port Everglades early Tuesday morning, November 17, when the ship carrying three giant ‘next generation’ low profile ship-to-shore cranes arrived at the Port’s dock to support the largest expansion project in the Port’s history.
The City of Alameda and Alameda Point Partners added a ferry terminal at the Seaplane…
The marine structures designed by Liftech for the San Francisco Fire Boat Station 35 design-build…