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Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]
The bridging component involved an assault bridge, designed by Major Charles Inglis RE, the Canal Lock Bridge, which had sufficient length to span a canal lock. Major Martel mated the bridge with the tank and used hydraulic power generated by the tank's engine to manoeuvre the bridge into place.
Around fifty of this type of linkspan have been built. The design allowed flexibility for ship-owners and ports during the changeover from the old very restricting system. With the development of wider ship's ramps (up to 28 m or 92 ft), triple lane lower deck and two lane upper-deck accesses to vessels, the submerged tank type has been superseded.
The deck includes any road lanes, medians, sidewalks, parapets or railings, and miscellaneous items like drainage and lighting. The supporting structure consists of the steel or concrete system supporting the deck. This includes the girders themselves, diaphragms or cross-braces, and (if applicable) the truss or arch system.
A grid deck uses beams and diaphragms as the supporting structure. The supporting system of a grid deck is analyzed using a grillage analysis. A slab deck is one where the deck is analyzed as a plate. If the slab has a stiffness that is different in two directions (at right angles), then the deck is known and analyzed as an orthotropic deck.
The operations are supported by a full service shipyard at Manns Harbor and 10 support vessels, including dredge, military-style landing craft utility vehicles , tugs, and barges. The Ferry Division operates over 200 sailings, with the ferries covering 1,200 miles (1,900 km) each day.
The Vincent Thomas Bridge is a 1,500-foot-long (460 m) suspension bridge, crossing Los Angeles Harbor in Los Angeles, California, linking San Pedro with Terminal Island.It is the only suspension bridge in the Greater Los Angeles area.
A deck is also the surface used to construct a boardwalk over sand on barrier islands. Laying deck or throwing deck refers to the act of placing and bolting down cold-formed steel beneath roofing and concrete floors. This is usually done by an ironworker, sometimes in conjunction with a cement mason or carpenter. It regarded as one of the most ...
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