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  1. MBGraham

    Frost protection of water service line to slab on grade building

    We have let the contract. They will use something like JAE's suggestion. Just exactly where insulation will be and how much will be decided once excavation is done. The riser through the slab floor will be about 33" from the inside wall which is about 10" from the outside edge of the slab...
  2. MBGraham

    Frost protection of water service line to slab on grade building

    Thanks. I have read about that type of protection for shallow foundations. As you say, it should also help protect the incoming line if we have to have the riser closer to the outside wall. I would have to pass this by the inspector first.
  3. MBGraham

    Frost protection of water service line to slab on grade building

    3-4 feet was also my guess. It would be better if we could keep that to say 2ft. But if not, we can work with say 5ft. at one entry location. It's not ideal and makes piping from there on a little more difficult. Regardless of where we decide to enter house, seems I should get contractor to...
  4. MBGraham

    Frost protection of water service line to slab on grade building

    The incoming pipe could be insulated. But will that help? If pipe is out of use for prolonged period wouldn't temperature of earth and water in the line equalize? We probably need to make use of heat from room (it is heated).
  5. MBGraham

    Frost protection of water service line to slab on grade building

    The home was built in 1968 and this room was originally an attached garage. I don't have any slab design details. We are in a limestone area where foundations are often supported off the bedrock, so don't have to be below frost level. Again we don't know if that is the case. We might have to...
  6. MBGraham

    Frost protection of water service line to slab on grade building

    This concerns a proposed service water line from municipal supply to a residence location that is built on a slab-on-grade. This is in Ontario, Canada with lowest winter temperatures -18F or -27C. I have searched codes but not found answer to my question below: According to code, water line...
  7. MBGraham

    load on cabinet hinges

    NG2020 said: "I've found a cabinet hinge in our kitchen that's a 6 bar linkage, which allows 170 deg rotation and some outwards translation. It's a real beauty. Made by blum, unsure of p/n. Doors are about .5" thk." I have seen that type of hinge. Not common on household cabinets. They are an...
  8. MBGraham

    load on cabinet hinges

    3DDave said: "There are many hinge designs that won't allow the door to pry the hinge loose from the frame. This isn't one of them." I don't know if there are many concealed face-front hinges that would work. But there are a few. You have alluded to the real problem. If the doors would open 170...
  9. MBGraham

    load on cabinet hinges

    Tomfh said: "Tension in wire roughly 40lbs. Load on hinge 20 lbs. Your 800lbs load (or whatever it is) is why it’s easy to pry off a cabinet door. Very short lever arm." Exactly the problem I am trying to resolve. So if those numbers are correct, the restraint screws would see a pull of 40lbs...
  10. MBGraham

    load on cabinet hinges

    Irstuff said: "Huh, you're worried about a single screw getting pried out, and your solution is to use single screws for a restraint? It seems to me that if you are that concerned, you might consider replacing those hinges with stronger ones" I don't have a solution yet and you don't seem to...
  11. MBGraham

    load on cabinet hinges

    rb1957 - This is in part why I asked first about the load diagram and the forces on the hinge. Intuition tells me that without that wire stay, it would be much easier to pry the hinge off by pushing on the edge of the door. The wire prevents the door hinge from getting to it's limiting position...
  12. MBGraham

    load on cabinet hinges

    rb1957 - Agree that the wire restraints are not elegant. And I wouldn't use them. But it seems many do. (see picture below) PhamENG and rb1957. There are restrictor clips that fit some hinges. But they are only meant to reduce door opening angle so there is no impact with walls etc. They are...
  13. MBGraham

    load on cabinet hinges

    You can make fun of my concern, but they sell thousands of restraints of different types for just this type of use. The face front verticals on our cabinet are particularly vulnerable. They are a soft wood, just 0.75"x1.5". And unlike the clip-top Euro type hinges used on many kitchen cabinets...
  14. MBGraham

    load on cabinet hinges

    The diagram is a plan view - or bird's eye view if you like. Added pic below. What I am interested in, is the difference in load on the single mounting screw with and without the wire restraint. And also, the value of force on the wire mounting screws if the restraint is used. The case...
  15. MBGraham

    load on cabinet hinges

    Where did the 30 in your formula come from? When you say reversal of load at hinge (C). Would that then see an upward force of 10lb at the hinge? Reason? The doors are at low level and vulnerable to someone purposely or accidentally pushing the door beyond 105deg where the hinges are at their...
  16. MBGraham

    load on cabinet hinges

    We have new cabinet doors. They are quite wide and somewhat vulnerable. I am thinking about adding a brace to limit the opening to 90deg (hinges go to 105deg. It's been a long time since I did any structural engineering! What I would like to see, is a load diagram for situation shown in...
  17. MBGraham

    Coat/Paint aluminum alloy rims - or not?

    Will, One of the cars I have is an 85 Mercedes. It has what are commonly called Bundt wheels (looks like a German cake!) These were first introduced in 1969. They are bullet proof. Never a problem with corrosion. However, these were forged aluminum alloy. Other later alloy wheels were often...
  18. MBGraham

    Coat/Paint aluminum alloy rims - or not?

    Just to conclude. Painted the rims today with Moeller Honda Oyster silver engine paint. I have new aftermarket rims on car, so these will go into storage until needed. https://files.engineering.com/getfile.aspx?folder=b95d3ea3-2f0e-42de-b7c5-282e8589d7b7&file=rims_finish_coat.JPG
  19. MBGraham

    Coat/Paint aluminum alloy rims - or not?

    I have completed 2nd to last step. Coated interior of rims with zinc phosphate primer. I chose a Moeller marine product that is made to be used on outdrives and outboards. There is a similar product by Tempo, but it was not available locally. I compared the Moeller with the Rust-Oleum self...
  20. MBGraham

    Coat/Paint aluminum alloy rims - or not?

    They will ship - at a cost! Same is available from aircraftspruce in Canada. Needs an etching solution first. Adds to cost! Then, based on this, it would still need to be overcoated. I only need to cover about 5sq.ft, so even although quantities are small, they are also too big :) Q: Can...

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