US2024368910A1PendingUtilityA1

Structural membrane bracing

62
Assignee: NORWOOD ARCH INCPriority: Feb 25, 2022Filed: Jul 18, 2024Published: Nov 7, 2024
Est. expiryFeb 25, 2042(~15.6 yrs left)· nominal 20-yr term from priority
Inventors:Steven Norwood
E04H 9/02
62
PatentIndex Score
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Cited by
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Claims

Abstract

Structure membrane bracing of a framing structure is achieved by mounting a flexible membrane to at least part of the framing structure using fasteners and/or adhesive. The flexible membrane is a thin sheet, such as a fabric, that may be supplied as a roll and/or as folded sheets. Unlike conventional rigid panel products, the flexible membrane is flexible in nature and may be tightly rolled or folded in a compact manner to facilitate transport and mounting. The structural membrane bracing provides a wall, floor, or roof bracing element with a nominal unit seismic shear capacity of 50 Vs (plf), or a nominal unit wind shear capacity of 50 VW (plf), or greater. The flexible membrane may also function as a water-resistive barrier, thereby removing the need for conventional water-resistive membrane layers.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . Structural membrane bracing, comprising:
 a flexible membrane attached to a framing structure;   wherein, the structural membrane bracing provides a wall, floor, or roof bracing element with a nominal unit seismic shear capacity of 50 Vs (plf) or greater; and,   the structural membrane bracing serves as a water-resistive barrier.   
     
     
         2 . The structural membrane bracing of  claim 1 , wherein the flexible membrane comprises spun bound polypropylene. 
     
     
         3 . The structural membrane bracing of  claim 1 , wherein the flexible membrane has a dry tensile strength of 233 lbs MD or greater per ASTM D 5034; wherein MD is machine direction. 
     
     
         4 . The structural membrane bracing of  claim 1 , wherein the flexible membrane has a dry tensile strength of 191 lbs XD or greater per ASTM D 5034; wherein XD is transverse direction. 
     
     
         5 . The structural membrane bracing of  claim 1 , wherein the flexible membrane has a dry tensile strength of 19 lbs CD or greater per ASTM D 5034; wherein CD is cross-machine direction. 
     
     
         6 . The structural membrane bracing of  claim 1 , wherein the flexible membrane has water vapor transmission of 10 Perms or greater per ASTM E 96, Method A. 
     
     
         7 . The structural membrane bracing of  claim 1 , wherein the flexible membrane has a trapezoidal tear resistance of 60 lbs MD or greater; and 67 CD or greater per ASTM D-1117; wherein MD is machine direction and CD is cross-machine direction. 
     
     
         8 . The structural membrane bracing of  claim 1 , wherein the flexible membrane has a Class A Flame Spread Index per ASTM E84. 
     
     
         9 . The structural membrane bracing of  claim 1 , the flexible membrane being covered with flooring, cladding, or roofing. 
     
     
         10 . Structural membrane bracing, comprising:
 a flexible membrane attached to a framing structure;   wherein, the structural membrane bracing provides a wall, floor, or roof bracing element with a nominal unit wind shear capacity of 50 Vw (plf) or greater; and,   the structural membrane bracing serves as a water-resistive barrier.   
     
     
         11 . The structural membrane bracing of  claim 10 , wherein the flexible membrane comprises spun bound polypropylene. 
     
     
         12 . The structural membrane bracing of  claim 10 , wherein the flexible membrane has a dry tensile strength of 233 lbs MD or greater per ASTM D 5034; wherein MD is machine direction. 
     
     
         13 . The structural membrane bracing of  claim 10 , wherein the flexible membrane has a dry tensile strength of 191 lbs XD or greater per ASTM D 5034; wherein XD is transverse direction. 
     
     
         14 . The structural membrane bracing of  claim 10 , wherein the flexible membrane has a dry tensile strength of 19 lbs CD or greater per ASTM D 5034; wherein CD is cross-machine direction. 
     
     
         15 . The structural membrane bracing of  claim 10 , wherein the flexible membrane has water vapor transmission of 10 Perms or greater per ASTM E 96, Method A. 
     
     
         16 . The structural membrane bracing of  claim 10 , wherein the flexible membrane has a trapezoidal tear resistance of 60 lbs MD or greater; and 67 CD or greater per ASTM D-1117; wherein MD is machine direction and CD is cross-machine direction. 
     
     
         17 . The structural membrane bracing of  claim 10 , wherein the flexible membrane has a Class A Flame Spread Index per ASTM E84. 
     
     
         18 . The structural membrane bracing of  claim 10 , the flexible membrane being covered with flooring, cladding, or roofing.

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