Static structures (e.g. – buildings) – With lifting or handling means for primary component or... – Position adjusting means; e.g. – leveling
Patent
1976-02-23
1977-11-15
Ridgill, Jr., James L.
Static structures (e.g., buildings)
With lifting or handling means for primary component or...
Position adjusting means; e.g., leveling
52645, 182178, 182179, E04G 302, E04G 1104
Patent
active
040579433
ABSTRACT:
A scaffolding arrangement is provided having removable bottom supports and adjustable outriggers for assembling the insulation and inner membrane of a liquefied natural gas (LNG) tank. A structural steel base is provided from which the scaffolding is supported. The structural steel base is supported from the bottom of the LNG vessel by adjustable screw jack supports. The inside of the LNG vessel is coated with various layers of insulating and support material and a final inner layer or membrane of stainless steel is provided over the insulation and other associated material. Any screw jack support can be removed, when adjacent screw jack supports are in place, allowing installation of the insulation and membrane in that area. Vertical supports are provided throughout the inside of the LNG vessel above the structural steel base. A plurality of horizontal spaced apart levels are formed within the LNG vessel to divide the inside of the vessel into a plurality of work platforms. The horizontal work platforms are formed from horizontally disposed structural members which are supported solely from the vertical columns. Thus, no cross bracing is required on the inside of the vessel. Except for the vertical support columns the horizontal work areas or platforms are open. The open work areas permit the easy use of mechanical handling equipment which is required for moving, installing and testing the insulation and corrosion resistant inner layer. The fixed horizontal work platform terminates a distance from the side of the LNG vessel. Adjustable outrigger members are provided between the fixed horizontal work platform and the side of the vessel. These adjustable outrigger members can be extended out to come into close proximity to the side of the vessel. Thus the work platform can be extended as close to the side of the vessel as desired. As the insulating layers on the side of the LNG vessel are built up, the outriggers are retracted accordingly. Thus, at all times the work platform can be close to the point where insulation or stainless steel membrane is being applied or tested. The vertical and horizontal scaffolding have connectors formed integrally therewith for easy connection or attachment to the associated scaffolding members.
REFERENCES:
patent: 2911125 (1959-11-01), Dosker
patent: 3679026 (1972-07-01), Hansen et al.
patent: 3800970 (1974-04-01), Jackson
patent: 3948412 (1976-04-01), Bennett
Massung Howard G.
Ridgill, Jr. James L.
Swiss Fabricating, Inc.
Yeager Robert D.
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