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Foundation Repair – I Beams vs Carbon Fiber Strips

Foundation Repair – I Beams vs Carbon Fiber Strips


Right now we’re comparing the difference between
carbon fiber strips and real steel Carbon fiber strip – they basically sand down
the block and they glue the carbon fiber strip to the block A carbon fiber strip is carbon fiber its about
maybe three eighths half inch thick it is designed not to be able to be pulled So if you glue that on to the wall that wall
will not bow because if it wants to bow it has to pull If I put a carbon fiber strip against a concrete
floor and there was pressure upon the wall It will just Snap. It was designed for pulling. It was not designed
for strength. It will just snap. I-Beam – take a three by two angle iron ok this
is quarter inch This is bolted to the floor beams ok The I-Beam is bolted behind there. This is
pressing the I-Beam against the wall It’s not installed level. You see the bubble?
I’ve got it leaned in. There’s Level… That would be straight This is on an angle Down the bottom there’s tension on the I-Beam
pushing the wall back So I’m already bolted on top and now I’m jacking
the bottom. This is a 12 ton jack. So I got 12 Tons of
pressure right now and that’s it. I get a piece of angle iron and release the
pressure This is steel, I have 12 tons Twenty four thousand pounds Of pressure at the bottom of this I-Beam. It’s within the lines Right now I have twenty four thousand pounds
of pressure pushing on this wall Its pushing back on this wall And it will be pushing back on this wall forever. And this is going to be solid concrete surrounding
the I-Beam That concrete is going to be pressing against
the existing floor keeping that in place. Never going to move. You got the angle iron all bolted together
up here to the floor beam These I-Beams will never go anywhere. The
wall will never go anywhere. You cannot do that with a carbon fiber strip! Because of the pressure is too great at the
bottom of the wall it will just snap This is a carbon fiber strip. Carbon fiber strips have not managed to prevent
the wall from blowing in Down here the wall is blown right out Now anybody can see that carbon fiber strip
just lets the bottom of the wall blow in Alright this job is a wrap. We got Thermal Armor on here R-15 Thermal
Armor The forever flooding basement is now fixed Try that with carbon fiber strips… Good
Luck!

Comments (41)

  1. This is an old video and the possibility of spitting the floor beams does not exist with 1/4 inch tempored lags but regardless of all that, the angle iron is mortised in. So really? Carbon Fiber? Give your manufacturer a call and see if they'll do a full blown all out test with me. I've a few jobs comming up. We'll do my way on one wall and yours on another. We can Fire up an old D9 (bulldozer) and whomever losses pays for the damages. And wait till you see next months video.

  2. My company has been using the steel bracing for 30 years and not one failure

  3. That looks like it would be very expensive.

  4. Dan … great video!  I was considering carbon fiber. Not now. I have a similar issue.  I have the skill set to do this.  Would you mind sharing the size beam you used and what are your thoughts about welding a baseplate at the bottom of the beam and mechanically anchoring it to the slab, assuming of course the anchors are sized and engineered to handle the load? Thanks

  5. Comedy……   This example of 24,000 lbs. of pressure is completely erroneous.  The concrete floor is most likely 2500 lbs. mix or 3500 at best.  So, how is 2500 mix concrete holding 24000 lbs "forever"?  If these pressures are accurate, then I would guarantee that the concrete floor would blow out.  Besides, where are the engineering reports showing that HIS method has accomplished ANYTHING.  And, his ONE example of a carbon fiber installation shows a defective install where the strips are not down to floor level and, so it appears, it is installed over some type of de-laminating cement product.  The cement product(or any other product) should have been removed and the carbon fiber directly adheres to the "structural " wall.  Once again… Comedy!

  6. Another Carrbon Fiber fan with a Comment.  Any and all foundation wall structural repair can and will fail when improperly installed.  Including I beams and Wall Pins.  Yet if all, I beam, wall pin and Carbon fiber strip where installed properly I do believe "common" sense will prevail.  Steel vs Plastic.   A Glue hold vs  Bolts and Concrete.  Comedy or plain ol practical common sense.  My Company My Reputation.  I do not trust Carbon Fiber.  To Fail one Customer is one too many.  If you chose to sell and install Carbon Fiber be sure to not let your Lability Insurance laps.

  7.  
    My basement wall is bowing inward due to the amount of clay in our soil.

    I'm still doubtful about Carbon strips because:
    1.) Carbon strips are a relatively new technology for basement walls, that has yet to be proven over the long term (20 years or longer)

    2.) Will the epoxy actually hold over the long term without degrading with age? Will it hold the wall AND the carbon fiber strip for the duration of the entire life of the house?

  8. I suppose building it properly in the first place would be out of the question?

  9. im going out on a limb and saying I don't think he likes carbon fiber strips very much jusssst sayin

  10. First of all those bolts into the joists will blow out long before carbon fiber. Second, just because a jack is rated for 12 tons does not mean you are applying 12 tons when you pump it up. Third, if you're worried about the bottom of the block blowing out, just use carbon fiber straps with a single angle iron bolted to the slab and the bottom corse of block.

  11. What is your opinion of wall anchor plates vs steel beams? I have a very small basement and hate the idea of losing 6 inches. I was thinking carbon fiber strap until this video. 

  12. What is your opinion between Carbon Fiber Strips and Wall Pins?  I talked to an engineer that told me Carbon Fiber does nothing at all to address the source of the problem.  She told us that most
    Carbon Fiber Strip companies were simply franchises with not a lot of structural knowledge.  She recommended rebar in our block walls with concrete.  What do you think?

  13. Daniel, do you have the dimensions of your ibeams, brother in law (who has a lot of experience in this area) and myself are going to attempt this process. Excellent video.

  14. The first video that shows my problem and the remedy after searching for hours . I like the use of the angle iron on the top. My problem is a little more difficult as the wall is pushing out on the bottom . I plan to knot the bottom together with re bar inserted in the floor vertical and connected with more horizontal re bar to the beam then cover with concrete to depth of 6 inches.This is under a bench so it will not be noticed. The horizontal crack is 1 meter high and 1 .5 meters in length. I have a large buttress on the outer wall as a prop but the wall still moves . This is a single story garage .

  15. I also love all of the structural engineer comments. It's great when the structural engineers work for the company trying to sell you product, no bias there.

  16. I am considering hiring a company by the name of Basement Services 911 to perform a crawlspace conversion to a basement.  Are you aware of them? This is a great investment and we want to make sure we make all of the right decisions.

  17. Thanks for sharing your foundation repair clips.

  18. Can a wall be straightened without digging/ freeing the wall from the outside? I am currently 1 1/2" out of level from top to bottom on a 8' tall basement wall at center of a 30' span. Also will straightening the walls push the floor level at the sill?

  19. Hey Joshua, Sorry but without digging some relief from the outside that wall isn't going to move. Don't worry about the bottom of the wall against the slab as long as the bottom of the wall isn't rotted. I would send you a link about how we push a wall back into place but my IT guy just got himself fired. Please look for Foundation Repair on You Tube. Hopefully you will find the right video to help. Nad bye the way, would you know any good IT people here in Jersey? We have a vacancy.
    – Daniel J OConnor

  20. You are very wrong. The carbon fiber straps have a neck tie system that secures it to the rim joist. But both methods transfer the lateral load of the wall to a section of the floor that was designed for vertical loads. Wall anchors or tie back methods are less invasive to the basement and place the lateral load out to virgin soil away from the basement wall. Also to move a wall back you should always excavate the exterior wall to remove the soil pressure. The I-beam method is old and clunky.

  21. Daniel, I'll go with steel over carbon fiber anyday. A couple of questions: (1) do you have to break out part of the existing floor or can you just weld a plate onto the bottom of the beams and bolt it to the floor , (2) my basement is mostly under ground. Does anything need be done on the outside of the wall? Thanks, Bill

  22. if i dig it out and use a i beam with a adjust tightening nut and dig it out will it push back fairly easy or will it still cause alot of stress on the floor joists? I'm dealing with a Cinder block wall.

  23. Both solutions are problematic. The eye beams are ugly and take up space inside the basement. Carbon Fiber Strips are often misapplied by contractors in the wrong application as the video states. Neither solution provides adequate lateral loads to solve the problem effectively. The I – Beams are attached to the floor joists above putting stress on the floor system. The lateral loads could crush the floor joists during heavy rain events when soils are swelling. Neither approach can move the wall back. A grouted soil nail stabilization plan combined with bearing plates or C-Chanel whalers would be a more effective approach. There is no need for messy outside excavations and over a series of adjustments during droughts the wall could be pulled back. The lateral loads would be transferred to the soils beyond and the system is much less obtrusive. For more information on a Soil Nail Retaining Walls and other geotechnical approaches please visit our website or give us a call.

  24. why would you use carbon fiber on a wall thats disintegrating and expect it to work..you should of used steel to start with!

  25. Are pins referring to rebar?  I have a little bow in my basement wall.  I think I am going to install drain tile this winter and use your technique with anchors, rebar and hydrostatic cement when it warms up a bit.  I'll be doing a lot of research until then.

  26. LMAO thank you for sharing. Stopped here after watching a carbon fiber video thinking that was bunk, than you for confirming my first thought.

  27. crazy ive installed alot and have seen alot done years ago have yet to see a strap fail due to anything but improper installation, i do dig steel tho over the straps but at the same time i feel straps are sufficient depending on the house of course

  28. what's your take on using carbon fiber to fix a single row of horizontal cracks between the first row of blocks at foundation level?

  29. what's your take on using carbon fiber to fix a single row of horizontal cracks between the first row of blocks at foundation level?

  30. I like this guy! He's funny.

  31. It sounds like he is trying to validate (in part using exaggerations and theatrics) what I assume is his business rather than offer a fair comparison between the products. Rather bias. Jury is still out but I'm still leaning towards properly installed carbon fiber (he was showing examples of improperly installed strips with no footers).

  32. I am afraid he is totally wrong about the manner in which the carbon fibre strip behaves and at 0:50 when he says that ," The carbon fibre strip would just SNAP." He should know that because of the thickness of the wall there would be tension on that carbon strip and not shear, as normally the walls bows out all at once and so the carbon strip would replace the steel enforcing in a wide beam where one side is in tension and the other in compression
    Still I prefer the steel beams he is using, but he should be careful about the figures which he is mentioning. His logic and reason in applied mathematics do not seem to be his area. Other than that it is good work.

  33. Having taken the time to actually speak to Daniel, I can understand his reluctance. As he has said, this video is over 15 years old, and in that time frame there were a very limited number of carbon fiber based repair systems in the residential market.
    I have seen the types of repairs that he is talking about, and after many years of change, both regulatory and in fair practices, the carbon reinforcements have come a very long way. I actually walked Daniel through the application procedures for the company I work with, and I was looking to address his concerns. Our system does tie both the sill plates and the footers into a single continuous bonded reinforcement. We also made sure that the spacing and carbon systems are actually designed for residential uses.
    An engineer could nit-pick this installation, or any installation for that matter. What Daniel is doing has been done for 50 years. That doesn't mean that it's the best solution for every circumstance, nor is it the worst. I have seen steel i-beam failures from improper installation techniques, just as he has seen carbon failures due to improper installation techniques. It's all a general wash when those failures occur, primarily because (according to ICRI and ACI) 95% of reinforcement failures are not are the result of the material failure, but of improperly planned and executed installation. That means that, of the repair systems that they have had failures reported to them for, only 5% were materials related and not the result of an installer cutting corners somewhere.
    ACI 440 has been developed to guide the commercial industry in the application of composites to concrete, and it has really increased the awareness of the proper calculations, proper methods, and the proper design requirements for this industry. The same cannot be said 15 years ago. The adoption of the ACI codes by leading manufacturers in a residential setting has become the real reason that this industry has gained acceptance. I think that even Daniel would agree that his concerns, lacking an anchor point to the footer as well as a secure anchor for the top of the wall, have been addressed.
    I welcome questions about how composite systems have changed. It's not a new technology, as the first tests using carbon fiber to repair a concrete structure were in 1956, and the first one in the US was in 1982. it's just now being made commercially available, and like everything new it needed time to mature into the market.
    Thanks, Daniel, for keeping us on our toes. Hope to chat again at the next BHA meeting. Maybe over lunch again?
    Johnnie

  34. I followed your method and installed 2 I beams a few days ago. It's working and the wall is moving. Thanks Dan! Tomorrow I'm going to dig a little earth away from the outside to help it move. After it's where I want it, I'm installing pins in the blocks and 5000 psi concrete. Done!

  35. I personally, would not buy a house with i-beam or carbon fiber repair to the foundation. If I needed repair to a home I already own, I'd go with the i-beam repair. Carbon fiber may be stronger than steel, but the bond to the wall is certainly weaker than bolts. I think the carbon fiber repair is a scam. In the end, I'd have the wall rebuilt and drainage corrected.

  36. Dan how do you waterproof around those beams??

  37. What size of I-beam did you use and what the distance between them? Did you remove the dirt from outside before fixing the wall?

  38. v.v.v.v.v.v.v.v.v.v.v.v.v.v.v.v. Goooooooooooooooooood and Cooooooooooooooooooooool job sir….thanks …..Love 4rm Pakistan….

  39. Question: You have 24,000 lbs of pressure on bottom of the beam but none at top so is it really pushing the whole wall out?

  40. how much is the cost?

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