Correct Size Anchor Bolts To Connect Sill To Block - Concrete, Stone & Masonry - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry


Thread Tools Display Modes
Old 02-02-2013, 05:16 PM   #1
Join Date: Feb 2008
Posts: 4
Rewards Points: 10

Correct size anchor bolts to connect sill to block

We're buying materials for building our new home and I now need to purchase the anchor bolts to secure the sill to the crawlspace foundation. We're using 8x8x16 block and I wanted to make sure I was buying the correct size hot dipped anchor bolts (J Bolts). Do I need 8" or 10" bolts?
We're building in Virginia. Thanks so much!


jjguitarplaya is offline   Reply With Quote
Old 02-02-2013, 09:03 PM   #2
concretemasonry's Avatar
Join Date: Oct 2006
Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074
Posts: 4,075
Rewards Points: 2,640

The minimum embedded length and the maximum spacing from national codes can always be over-ridden by a local code authority based on conditions and problems. Check the local codes even if you do not need a permit.

Coastal areas may have stricter requirements because of storm winds. I lived within 10 miles of the coast and everyone there expected to a beach front home sooner or later, even with good anchor bolts.



concretemasonry is online now   Reply With Quote
The Following 2 Users Say Thank You to concretemasonry For This Useful Post:
jjguitarplaya (02-02-2013), joecaption (02-02-2013)
Old 02-03-2013, 10:11 AM   #3
Join Date: Feb 2008
Posts: 4
Rewards Points: 10

I had actually spoken with the local building inspector about the IRC and he said that my county office follows the guidelines of the 2009 IRC and pretty much no changes. (We live in a rural area). According to the 2009 IRC do you know what the code would call for with the anchor bolts? I've read the code but its confusing to me. We're buying what materials we can out of pocket and building in stages and my materials list doesn't indicate size only the number needed. Thanks for your help!
jjguitarplaya is offline   Reply With Quote
Old 02-03-2013, 11:53 AM   #4
Concrete & Masonry
Join Date: Nov 2008
Location: Wisconsin
Posts: 3,488
Rewards Points: 636

We're not under IRC here, yet, but I believe most codes call for galvanized 1/2" diameter, minimum embedment of 7". Typically, you'll want to hold the bolts up 2-2.5" to bolt the sill plate down, so the math is 2.5" + 7" minimum = 9.5" minimum, so you'll need 10" long anchor bolts to satisfy code.........
jomama45 is online now   Reply With Quote
The Following User Says Thank You to jomama45 For This Useful Post:
concretemasonry (02-03-2013)
Old 02-03-2013, 11:57 AM   #5
Join Date: Feb 2008
Posts: 4
Rewards Points: 10

Thank you so much! That really helps a lot and I hope you have a great weekend.
jjguitarplaya is offline   Reply With Quote
Old 02-04-2013, 03:31 PM   #6
GBrackins's Avatar
Join Date: Apr 2012
Location: Fairhaven, Massachusetts
Posts: 2,915
Rewards Points: 2,108

This is the Virginia Residential Code for Foundations. Depending on where in Virginia you are located you may have additional high wind (hurricane force wind) requirements which would impact the size and spacing of anchor bolts.

Check out the requirements in your code and verify with your local building department.

Hope this helps! Good luck!



"You get what you pay for, and sometimes free costs more!"
GBrackins is offline   Reply With Quote
The Following User Says Thank You to GBrackins For This Useful Post:
jjguitarplaya (02-04-2013)

anchor , bolts , crawlspace , foundation

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
rotted sill plate, joist ends and stud bottoms oh my. slowjo Building & Construction 16 05-02-2009 09:43 PM
Trouble finding correct filter size mitchv HVAC 8 10-16-2008 07:27 AM
Sill Plate size Clutchcargo Building & Construction 5 09-15-2008 04:48 PM
Plumbing Vent size recommendations rlhed Plumbing 4 07-31-2008 12:01 AM
correct joist size for attic helpless handyman Building & Construction 1 07-05-2006 11:29 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1