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Lateral and uplift resistance apparatus and methods for use in structural framing

a technology of structural framing and uplift resistance, which is applied in the direction of girders, building repairs, walls, etc., can solve the problems of uneven walls, difficult strip tightness, and inability to allow field modification

Inactive Publication Date: 2005-01-13
NUCONSTEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method results in an uneven wall because the strips protrude into the adjacent surfaces, particularly where they are fastened to the framing.
Further, it is very difficult to get the strips tight so that building flexure is minimized.
Both rigid frames are prefabricated and therefore do not allow field modification.
Only a few of the conventional systems provide for fastening to a foundation to resist uplift forces.
Generally, except for the conventional method of wood bracing where a bracing member may be cut to fit, systems do not allow for on-site modification.

Method used

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  • Lateral and uplift resistance apparatus and methods for use in structural framing
  • Lateral and uplift resistance apparatus and methods for use in structural framing
  • Lateral and uplift resistance apparatus and methods for use in structural framing

Examples

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embodiment 30

[0048]FIG. 3 shows an exploded view of an embodiment 30 of the present invention. The sill clip 50a is fabricated similarly to the head clip 50. In addition, one embodiment includes anchors 90 through the sill clip 50a, such as chemical or wedge anchors, to be placed into a concrete foundation. Such anchors 90 axially resist uplift forces.

[0049] The tension strut 54 has an adjustable length based on sliding, or telescoping, the web members 58, 58a and then fastening them using fasteners 96. Fastening of the web members 58, 58a to each other and to the triangular bracket members 82, 84 may be done with, for example, self-tapping screws, pre-drilled holes with screws or bolts as shown, or welding. As shown in FIG. 2, the upper end of the tension strut 58 is mounted to the bracket 80 of the head clip 50 by a bolt 98 that passes through holes 100, 102 in the triangular bracket members 82, 84 and through a hole 104 in the tension strut 54. The holes 100, 102 may be, for example, round, o...

embodiment 50

[0050] The head clip 50 is shown in the side view embodiment 50 of FIG. 4 have a slotted hole 102 through bracket member 84 for attaching the tension strut 54 to the head clip 50. A corresponding opening, slotted hole 100, penetrates the other bracket member 82 (FIG. 3). A slot 100, 102 may be used instead of a round hole in order to avoid compression force on the tension strut 54. As shown in the head clip 50 and sill clip 50a embodiments of FIGS. 4 and 7, when installed the tension strut 54 should be as short as possible, with the bolts 98, 98a on the edges of the slots 100, 100a and slots 102, 102a that are proximate to each other. When using this tension strut 54, it is necessary to ensure that the structure itself is “tight.” Connections should be made in a manner to assure that they will be initially free of slack and will not loosen under load reversals or repeated loading. This means avoiding connections that are loose or that allow movement between the structural members. A...

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Abstract

Bracing apparatus and methods for structural framing made of light gauge steel or wood, as may be needed when the framing is subject to dynamic loads. The bracing, generally provided by two bracing clips and a diagonal tension strut of adjustable length, may be installed in framing bays of varying heights and widths. Head clips and sill clips are provided. The sill clip may be anchored through the sill to a concrete foundation to provide uplift resistance. A stud support clip is provided for supporting two vertically aligned studs, and allows a diagonal tension strut to pass between the studs.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority from co-pending provisional application 60 / 486,664, filed Jul. 11, 2003, by the inventor hereof, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF INVENTION [0002] The present invention relates to support systems for framed structures, and more particularly to lateral and uplift resistance of structures made of light gauge steel or wood framing subject to dynamic lateral loads. [0003] In general, the design of structural framing elements in buildings primarily addresses gravity loads. Gravity loads include static loads such as the weight of the building and the weight of attachments to the structure, as well as live loads including the weight of human occupants, furniture, movable equipment, vehicles, and stored goods. In addition to gravity loads, structural framing design also must address dynamic lateral loads. [0004] Dynamic lateral loads such as wind, earthquakes, vibr...

Claims

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Application Information

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IPC IPC(8): E04B1/24E04B2/70E04C3/02
CPCE04B1/24E04B2/707E04C2003/026E04B2001/2696E04B2001/405E04B2001/2496E04B2001/389
Inventor HANSON, COURTNEY J.
Owner NUCONSTEEL
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