06:40PM | 04/13/04
Member Since: 04/12/04
1 lifetime posts
I plan to build a shade structure over my deck, and wish to keep the deck open; i.e. I wish to use posts only at the edges.

The problem is that I have a rather large span to cross:

23 foot Joist Span.

8 foot Beam Span.

6x6 Posts (10 foot high).

To top it off, it might hold a little snow.

Assuming worst case, I attempted to use the deck tables; however, the Beam Size table doesn't support these large sizes.

How do I go about caclulating the required material?

How about alternatives? I would consider aluminum I-Beams, but I'm not sure where to start with this.

Any help would be appreciated.



06:19AM | 10/12/06
Member Since: 06/19/06
26 lifetime posts
Our support can answer your issures

205 368-7226 or visit our website below

Good luck


Screen room | Garden room | Outdoor room | | Do-it- Yourself


06:40PM | 03/13/07
Member Since: 03/12/07
1 lifetime posts
I have pretty much the same question. My deck is 14ftx12ft & I don't want a post in the center of my deck either. I was thinking steel but afraid of the look. My dad(not an engineer) suggested sandwiching plywood between two 2x8's for strengh & to prevent sagging. Maybe a 1/4"steel plate w/ bolt holes every 2ft instead of plywood would be even better & still keep the wood look. Let me know if you have found a solution to your problem.
Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon