COMMUNITY FORUM

jdefazio

10:13AM | 08/07/03
Member Since: 10/11/02
11 lifetime posts
Bvbasement
Hello - I'm having a new house built – 2 story + basement currently at the framing stage and noticed something that I just had to ask about.

When they poured the foundation, there was a formed square notch/or step about 1 foot wide x ½ foot deep at the top of each foundation wall.

When they installed steel I-beams to start the framing process, the ends of each beam that runs towards a foundation wall sits into this notch/step. Of course, the steel I-beams also have steel posts that anchor into a footing in the ground for additional support. What I noticed was that they used some kind of flat stone and steel shims inside this square formed notch to level and/or raise the steel i-beam (the steel i-beam ends sit on the steel shims, which in turn sits on this flat stone, which in turn sits on the stepped part of the concrete notch at the top of the foundation wall).

Just curious if anyone ever heard of this practice (flat stone, steel shims) when leveling a steel i-beam on a foundation wall(s). Its obvious they used them to raise the steel beams ½ foot so that the basement ceiling wouldn’t be below 7.5/8ft high however the steel beam doesn’t seem to bolt on anywhere. It just sits flat on the shims / stone, and the wood beams are laid on top of the steel beam. Maybe this is the way steel i-beams are installed but I have no idea - worried about structural integrity.

Is anyone familiar with what I am referring to? Could they still have work to do? The 1st floor above the basement (foundation) has been framed.
Thanks!
John

treebeard

01:28AM | 08/08/03
Member Since: 01/14/03
264 lifetime posts
I haven't seen the flat stone trick, but everything else is normal. The steel beam is not usually held in place in the pocket by anything more than gravity and the weight of the house above. And because forming and pouring concrete for foundations has yet to reach the level of science that has the same exactitude required by NASA, shimming is usually required. Steel shims are the shim of choice. It sounds to me like perhaps someone blew the pocket forming and your builders were faced with coming up with something that would serve as a large shim. The stone should be fine, so long as it's not sandstone or some other soft easily broken mineral. Granite would serve well.

jdefazio

05:34PM | 08/10/03
Member Since: 10/11/02
11 lifetime posts
Thanks for the help.

I was able to find a piece of the rock used on my lot.. how would i go about finding out what kind of rock it is? it looks like granite but how can i be sure?

Thanks again
John

treebeard

01:36AM | 08/11/03
Member Since: 01/14/03
264 lifetime posts
Well, I know Toronto is a bit of a hike from Bancroft, but if you have a local mineral collecting club (usually called rockhounds) members of the club could tell you. Bancroft is 'rockhound central' up your way. Try using Google to find a club in your area.

jdefazio

12:30PM | 08/11/03
Member Since: 10/11/02
11 lifetime posts
Thanks for all your help!

John

GlennG

05:48AM | 08/17/03
The preferred method of installing and attaching a steel beam to a concrete wall is as follows:


  1. When the concrete is poured, 2 anchor bolts are embedded into the concrete inside the beam pocket. A template is used to line up the bolts with the holes in a steel plate to be placed over them later. The beam pockets in the concrete can and should be within 2” below the required height plus or minus ½”.

  2. A steel bearing plate (with 2 holes that line up with the anchor bolts) is set over the anchor bolts and adjusted to the proper finished elevation using a nuts below and on top of the plate on each bolt.

  3. The beam is set on top of the bearing plate and welded in place.

  4. Then the space under the bearing plate is packed solid with non-shrink grout.

This is not always the way it is done in residential building, but it is the preferred method.

Glenn www.consultationdirect.com

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

All bookworms need a good bookmark that inspires them to keep reading. To make this colorful bookmark, cut a rectangular p... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... 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... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2