COMMUNITY FORUM

Melanie

04:26PM | 01/29/03
Member Since: 01/16/03
16 lifetime posts
Bvdecor
I designed a plan with 18' spans and took it to a potential builder. He told me not to exceed 16' or there would be a huge cost increase. Is this true? All of the rooms are square and hard to furnish. What kind of cost will engineered joists be compared to regular joists? Any other cost saving design limitations I should watch out for?

treebeard

07:49AM | 01/30/03
Member Since: 01/14/03
265 lifetime posts
One can certainly purchase standard 2x stock in lengths longer that 16'. Most lumber yards can provide up ro 22' lengths. The problem is that spans that begin to expand beyond 16' feet will provide for a certain amount of "bounce" or deflection at the second floor level. That can be fairly undesirable in the finished product. Changing the size of the floor joist from, say, 2x10 to 2x12 can add significant cost. Changing the spacing of 2x10's from 16"o.c. to 12"o.c., while achieving a certain amount of increased stiffness, can add to the cost. While even the newer engineered lumber has it's limits, those limits are likely beyond what you're looking at, and changing to the engineered lumber for joists, even at an decreased spacing (12"o.c.) might be the best bet.

If you're still in doubt with your builders opinion, get a second opinion from a local architect, builder, or engineer.

Piffin

06:50PM | 02/01/03
Member Since: 11/06/02
1284 lifetime posts
What I see here is an old time builder, ignorant of new methods and materials, and a designer who knows little of materials and design protocols. This is a recipe' for disaster in the final product.

Using TJIs, and sometimes with open web floor trusses, it is possible to have longer spans at less net cost because some beams can be eliminated and labor cost can be reduced. In other situations, cost can go up significantly. It takes experience to know when and how.

The best you can do, with your limitations, is to go to the local lumber supply that sells engineered joists and show them what you are trying to do and they may be able to help you with engineering software and cost estimates. But be prepared to follow through and buy from them, they shouldn't be expected to do this work for free.

ACD

12:11PM | 02/11/03
Member Since: 10/15/02
359 lifetime posts
Also check with the building department where you plan to build and find out if TJI is allowed for the first floor. Highland park, or maybe it was Lake Forest, did not allow TJI's to be used for the first floor, but was OK for the second floor. Seemed a bit strange to me, and not sure if that still holds true today, but 6 years ago, thats how they were here in IL.

calgary4her

04:45PM | 04/10/03
Member Since: 04/09/03
3 lifetime posts
I agree with the last two replies. I would deffinatly consider TGI joist. 18' for a TGI is nothing and as a draftperson i am using more and more TGI continualy. good luck!

Piffin

03:58PM | 04/11/03
Member Since: 11/06/02
1284 lifetime posts
T J I
not "G"

Truss Joist I-beam

Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

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

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

Painting your front door a striking color is risky, but it will really grab attention. Picking the right shade (and finish... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2