But where aesthetics is a concern, I use cable, I bolts, and turnbuckles applied as X-bracing under the surface of the deck (not as a replacement for wood x-bracing my posts. Hence the purpose of cross bracing. A deck without cross bracing relies entirely for moment (rotation) resistance on the ability of the posts to resist rotation. Since
Probably the most common bracing design is the “H-brace,” which involves placing a horizontal cross-member between the end post and the next post in the fenceline. Looking at a diagram or an existing brace, it doesn’t seem too technical. Building End Braces Author:
Deck collapses can also be traced to a lack of sufficient diagonal bracing. I've seen decks built where the outer support beam just rests on wood posts. If a group of people up on the deck start dancing and a harmonic motion builds up, the entire deck can collapse as the deck starts to shift sideways.
The rotted wood in the cap of the Holland landmark was found during work to rebuild its observation deck, The Holland Sentinel and The Grand Rapids Press reported this week. but was showing
derive their lateral stability mainly from the stiffness of the attached deck, ad- ditional bracing against rotation or lateral deflection is not able to achieve an results are of value to designers of large flat wood roof systems. mode) and checked % y the methods presented here for required strength. FIG. 2. Deflections of Cross
But we had those two sticks that we're bracing ourselves on to. or the sand went up to our knees at this point. at night going off to the deck and looking at the vast pitch black darkness
The illustrations show suggested methods for bracing ledgers when the deck joists run either parallel to or perpendicular to solid-sawn or wood I-joist floor framing. Sizing Posts, Beams, & Joists Here are some rules of thumb for sizing framing members for simple deck designs.
Wood deck knee bracing is commonly used because it looks nice and doesn’t obstruct the view as would K- or X-bracing. The following illustration explains wood deck racking and knee bracing: Wood Deck Diagonal Bracing Resists Lateral Loads and Racking
Wood Decks (Entire section is a NC amended appendix) Roofed wood band for the length of the deck, or . porches (open or screened-in) may be constructed corrosion-resistant flashing shall be used to AM109.1.4 2x6 diagonal vertical cross bracing may be provided in two perpendicular directions for
Steel Bridge Design Handbook November 2012 U .S. Department of Transportation Federal High way Administration Bracing System Design. Archived. Publication No. FHWA-IF-12-052 - Vol. 13
Lateral Bracing Alternatives The 2009 IRC, which is the building code in my area, requires that a deck connected to and supported by its primary structure be "designed for vertical and lateral loads as applicable" (2009 IRC, R502.2.2). Contact Hanley Wood; Magazine; Careers;