Strongwall bracing selector the strongwall bracing selector swbs provides preengineered strongwall alternatives to codeprescribed braced wall panels. The alternate braced wall panels described in section r602. Irc wall bracing applied building technology group. Unless concrete masonry basement walls are designed and built to resist lateral earth pressure as cantilever walls, they should not be backfilled until the first floor construction is in place and anchored to the wall or until the walls are adequately braced. Required wall bracing for seismic and wind are separated in two separate tables seismic only sdc c and d categories 4. Construction methods for braced wall panels upcodes. Simpson strongtie strongly supports sustainable building practices, such as those established by the u. Hps hardboard panel siding abw alternate braced wall pfh intermittent portal frame pfg intermittent portal frame at garage a.
In a continuouslysheathed wood structural panel braced wall line, the minimum braced wall panel length shall be permitted to be in accordance with table r602. A portal frame wall constructed in accordance with these provisions may be substituted for any exterior braced wall line required by section r602. Braced wall panels shall be constructed and placed along a braced wall line in accordance with this section and the bracing methods specified in section r602. Braced wall panels shall be fullheight sections of wall that shall have no vertical or horizontal offsets. Green building councils leadership in energy and environmental design leed green building rating system, nahb green, and state and city specific green building codes. Braced wall panels must start within 8 of each end of a braced wall line and be spaced a maximum of 25 on center. Braced wall lines are basic elements in conventional light frameconstruction and shall consist of braced wall panels. Wall sheathing is essential to the structural integrity of a home. Bwp bwp height bwp minimum length of bwps length table r602. A guide page 3 manner, offsets can affect braced wall panel location and, thus, the layout of openings for windows and doors in a series of braced wall lines on a given building side elevation.
With support from simpson strongtie, both of the proposals were approved. In what is not clear is how much braced wall panel is equivalent to one 28 braced wall panel. So in the 2015 irc, bracing method pfh will require an embedded straptype holdown with a minimum capacity of 3,500 lbs. Panels shall be supported directly on a foundation which is continuous across the entire length of the braced wall line. It should be noted that both of these sections impose a 10foot height limit on alternate braced wall panels. The fivepart series begins with a onehour introductory session covering wall bracing history, theory and strategy. Used at the garage or at openings along a wall line in the dwelling. Is an interior braced wall line permitted to be braced with a single braced wall panel 48 inches in length. Draw a rectangle around the perimeter of the building and stagger the required number of bracing units along the four wall lines. Alternate braced wall lines constructed in accordance with one of the following provisions shall be permitted to replace each 4 feet 1219 mm of bracedwall panel as required by section r602. Lengths of alternate braced wall panels shall be in accordance with section r602. Lateral design of wood frame structures lateral failure woodworks.
The braced wall panel shall be permitted to begin no more than 8 ft from each end of the braced wall line provided the following occurs. The cad details on this page are just some of the cad details available in this categorylibrary. If one requires 12 feet of braced wall panel and it could be done in one continuous run, can one then replace it with one 28 alternate braced wall panel. Conventional light frame wall bracing pima county, arizona. New alternate braced wall panel the 2004 irc supplement defines in section r602. Required wall bracing for wind is based on the spacing of braced wall lines and adjustment factors including wind exposure 5. Methods of bracing shall be as described in sections r602. Alternate braced wall panel adjacent to door or window opening added continuous sheathing 4.
The building official has the final authority in rendering interpretations of the code as. Structural wood panel sheathing contributes to the structures ability to handle uplift loads, lateral loads and wind pressures while providing secure connection to the roof and protecting the occupants. A braced wall panel is a segment of a braced wall line consisting of the wood structural panel e. The building codes ibc and irc use the terms braced wall panel and braced wall line. Figure 3 illustrates one type of temporary lateral bracing being used in the. City of modesto building safety, 1010 tenth street, suite 3100, p. Hardboard panel siding alternate braced wall because of the relative complexity of choosing and analyzing bracedwall sections per the irc, the engineered wood association apa published a guide to the irc wood wall bracing provisions apa. Framing and bracing sample drawings autocad details. Rectangle sides 60 feet long or less ratio of side length a maximum of 3. A braced wall panel keeps the wall square by transferring shear from the top of the wall to the bottom braced wall panels are built in a specific way braced wall panel has a specific amount of resistance panels are placed at specific locations within a braced wall line to resist the lateral loads typically the ends of. Conventional lateral bracing requirements for single. Ibc portal frame bracing method archives simpson strong. Straight line thru the building representing location of lateral resistance provided by wall bracing. Braced wall panels are a minimum of 4 in width for wood or 4 both sides for gypsum or stucco unless an alternate panel is installed.
The wall bracing webinar series is presented by apa and aibd american institute of building design. Method abw alternate braced wall panel with holddown brackets. A braced wall line shall consist of braced and or alternate braced wall panels that meet the requirements for location, type, and amount of. Any required braced wall panel locations that occur on a wall or portion of a wall that is actually of pouredinplace concrete construction is considered equivalent, and that amount of bracing will count towards the minimum required amount and will not need to be provided in another location on that rectangle side. Concrete foundation continuous across the entire length of the braced wall line. Page 1 of 4 conventional bracing 1 handout shasta county. For simplicity, building codes have developed prescriptive bracing strategies that look only at designated braced wall lines and individual braced wall panels on those braced wall lines. The rear braced wall line is drawn to split the offset in the rear wall line.
These panels shall begin no more than 10 feet from each end of a braced wall line and the. Each 32 alternate braced wall panel may be substituted for a. Additional sessions address related topics, including meeting code requirements with wall bracing, the simplified wall bracing. The building codes ibc and irc use the terms braced wall panel and braced wall line throughout. Interior braced wall lines must comply with the same provisions as exterior braced wall lines. As shown in the floor plan below figure 1, four exterior braced wall lines are identified.
Method abw braced wall panels shall be constructed in accordance with figure r602. Alternate braced wall panels shall be constructed in accordance with figure. Show the location, type and length of each braced wall panel on the plans. The abw method was one of the original narrow panel bracing. Residential code 2015 of utah 6 wall construction r602 wood wall framing r602. But there are some real structural limitations to cutting holes in. Foundation cripple wall panels shall be braced in accordance with section r602.
A braced wall line shall consist of braced and or alternate braced wall panels that meet the requirements for location, type, and amount of bracing specified in the associated tables in section r602. Fully sheathed wood walls solve a majority of building challenges by. Maximum distance between lines stipulated table r602. Multiple braced wall segments form braced wall lines, as shown in figure 6. More amount of bracing is required when wall spacing. The same will hold true for the alternate braced wall panel adjacent to a door or window opening bracing method in the 2015 ibc. The maximum height and minimum width of each panel shall be in accordance with table r602. Intermittent and continuously sheathed braced wall panel s shall be constructed in accordance with this section and the methods listed in table r602. A braced wall segment, shown in figure 5, is a segment or portion of a braced wall line.
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