1. #1
    Forum Member

    Join Date
    Dec 2012
    Location
    Savannah
    Posts
    2

    Default Should I seal cribbing and step chocks?

    I am going to build some step chocks for my department and was wondering if I should seal them or leave the natural?

  2. #2
    Forum Member
    firedan525's Avatar
    Join Date
    Dec 2013
    Posts
    108

    Default

    I would't bother brother. Just use pressure treated lumber.

  3. #3
    Forum Member

    Join Date
    Dec 2012
    Location
    Savannah
    Posts
    2

    Default

    I was told you lose strength when you use pressure treated lumber.

  4. #4
    Forum Member
    firedan525's Avatar
    Join Date
    Dec 2013
    Posts
    108

    Default

    We made our engines cribbing set out of pressure treated 4x4's and 6x6's about 10 years ago. We have used that cribbing tons of times and never had a problem. We have both poly and wooden stacked 2x2 step cribbing and both have held up great. Im not a lumber expert but having it being pressure treated will help it stand up to rot and decay. We use cribbing in rain, snow, and all sorts of environments and using treated lumber will help it stand up.

  5. #5
    Forum Member

    Join Date
    Nov 2002
    Posts
    1,233

    Default

    I made some ground pads and wheel chocks for my POC dept. and I put on a couple of coats of sealer and some enamel paint with sand in it for grip. The paint will help prevent absorption of water and fluids, and I painted them yellow for visibility. Not that they are fancy or anything, but it makes them last a little longer. I also sand all surfaces and round the corners to prevent splinters.
    Here's the thread on the wheel chocks;
    http://www.firehouse.com/forums/t125839/ (Cheap and easy wheel chocks)
    There's no need to paint cribbing, except for identification of the truck it belongs to.

  6. #6
    MembersZone Subscriber

    Join Date
    Nov 2007
    Posts
    4

    Default

    1st We were taught not to paint or seal wood cribbing as it made it more susptible to slide. @n pressure treated lumber is not recommended for cribbing as it will not give you any warning of failure. What is meant by this is non pressure treated would will have audible cracking sounds prior to complete failure most of the time. This sint a big issue in normal automobile extrications. But if you use your cribbing for anything else such as large vehicles or structural collapse you shouldnt use pressure treated lumber.

  7. #7
    MembersZone Subscriber

    Join Date
    Nov 2007
    Location
    North Carolina
    Posts
    252

    Default

    Both treated and non-treated wood may be used for cribbing. Treated has no degradation in strength vs. non-treated, and both will indicate failure indicated by checks.

  8. #8
    Forum Member

    Join Date
    Nov 2002
    Posts
    1,233

    Default

    Quote Originally Posted by riverdiver View Post
    1st We were taught not to paint or seal wood cribbing as it made it more susptible to slide. @n pressure treated lumber is not recommended for cribbing as it will not give you any warning of failure. What is meant by this is non pressure treated would will have audible cracking sounds prior to complete failure most of the time. This sint a big issue in normal automobile extrications. But if you use your cribbing for anything else such as large vehicles or structural collapse you shouldnt use pressure treated lumber.
    I don't know where you got that info, but it's not correct. Just try and find large dimentional lumber that ISN'T treated. Treated wood with a lot of moisture may not make much noise, but you will see moisture seeping out of parts under pressure. If it is dry you WILL hear cracking. If you PROPERLY use cribbing, treated wood is NOT a problem. If you're going to shore up an Egyptian Pyramid or something you might want to use Oak, but 99.9% of the time, treated is ok for shoring in a USAR setting. It's more important to look at the individual piece of lumber for knots, cracks, and other defects. Unless you go out and amass a stockpile a boatload of custom cut clear Oak for cribbing, you're gonna be using treated wood.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Wooden Step Cribbing
    By yamahaha in forum University of Extrication
    Replies: 2
    Last Post: 09-18-2011, 07:50 PM
  2. Flipping step chocks upside down?
    By ffmedcbk1 in forum University of Extrication
    Replies: 16
    Last Post: 01-30-2008, 04:09 PM
  3. Replies: 63
    Last Post: 06-01-2002, 02:28 PM
  4. Sog"s for step cribbing
    By nubs84 in forum University of Extrication
    Replies: 1
    Last Post: 07-10-2000, 09:19 PM
  5. The Basics...step chocks.
    By SBrooks in forum University of Extrication
    Replies: 6
    Last Post: 01-20-1999, 12:30 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Log in

Click here to log in or register