How to Repair a Damaged Carrying Beam

Posted by in Home Improvement Tips, on April 10, 2018

https://www.youtube.com/watch?v=4DYzcyQaNuc

Ask This Old House general contractor Tom Silva teaches a homeowner how to repair some structural problems in his home. Click here to SUBSCRIBE to the official This Old House YouTube channel: http://www.youtube.com/subscription_center?add_user=thisoldhouse Time: 6-7 hours Cost: $100 Skill Level: Expert Tools List for Repairing a Damaged Carrying Beam:
Bottle jack
Grinder
Large pipe cutter
Cold chisel
Hammer
Level
Drill
Pry bar Shopping List:
Temporary post
Steel lally column
Wood screws
Masonry screws
Angle iron Steps:
1. Use the jack and the temporary post to support the structure before removing any posts.
2. Remove the old lally column with a grinder.
3. Measure and mark the replacement column and cut it to size with the large pipe cutter.
4. Smooth out the bottom of the new cut with a hammer and cold chisel.
5. Put the post in place on metal plates and slowly remove the temporary post. Check the post for level before putting the full weight of the house back on it.
6. Screw the metal plates to the beam and to the floor with the appropriate screws.
7. To repair damaged beams, locate a local welder or metal shop and request angle iron, cut and drilled to the length of the beam being repaired.
8. Remove any pipes, wires, etc. currently going through the beam. Be sure to turn off the water, power, etc. before doing so.
9. Pry the joist hanger away from the beam.
10. Mount the angle iron on the jack and the temporary post. Get the angle iron in place and slowly raise the jack until the angle iron is wedged up against the damaged beam.
11. Screw the angle iron into the beam and remove the temporary post.
12. Slide any pipes or wires previously removed back through the beam and turn the water and power back on. Resources:
Lally columns and the lumber used for the bridging can be found at the local home center or the local lumberyard. Steel angle iron can be ordered to size and is sold at metal or welding shops. Special assistance with this project was provided by Boston Welding (http://www.bostonwelding.com/). In the workshop, Tom shared some basic rules for cutting and notching joists and rafters. For cutting holes, a hole can be no more than ⅓ the depth of the structure and cannot be within 2" of an edge. For notches, the maximum notch depth is ½ the depth of the structure and no notches can be made in the middle ⅓ of the span. Ask This Old House TV
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.
 
This Old House releases new segments every Sunday, Monday, Wednesday and Friday.
 
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