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joints

A joint or articulation (or articular surface) is the connection made between bones in the body which link the skeletal system into a functional whole. They are constructed to allow for different degrees and types of movement. Some joints, such as the knee, elbow, and shoulder, are self-lubricating, almost frictionless, and are able to withstand compression and maintain heavy loads while still executing smooth and precise movements. Other joints such as sutures between the bones of the skull permit very little movement (only during birth) in order to protect the brain and the sense organs. The connection between a tooth and the jawbone is also called a joint, and is described as a fibrous joint known as a gomphosis. Joints are classified both structurally and functionally.

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  1. W

    Joints under screed, ok to do?

    First of all apologies if this doesn't make complete sense as I know next to nothing about plumbing. I am having a house built and the plumber has installed all of his pipes prior to the screed being laid on the ground floor. The screed will completely cover a number of pipes. When the company...
  2. O

    Is there a Loctite type glue for plumbing joints

    Hello, I need to join two male threads into a female straight connector and want to glue them so they cannot be unscrewed and hopefully the glue would contribute to ensuring the joint is leak free. Is there a special recommended glue for this purpose. Advice, recommendations or jocular...
  3. T

    Maincor pipe systems

    Has anybody used Maincor pipe out there yet? We used some recently on quite a big job and have had leaks on some of the crimped joints. Maincor don't seem to have any answers as to why the joints were leaking. They had passed a 6 bar test and started leaking a couple of weeks later on the flow...
  4. J

    Gas pipe - Solder or Braze?

    General question not related to any job, but, When I worked quite a few years ago wiring Domestic CH systems for BG and others the gas pipework was installed with solder joints, some fitters using self-cleaning flux and others not. Most of the fittings used were solder ring with occasional...
  5. J

    Using paste on compression joints

    Hi all I am wondering if it is legal to use paste on gas compression joints. reason I ask is because a friend of mine uses ptfe and paste on every single compression joint, I try not to as I would like to be able to do it without. but this made me wonder, if we all learn to do compression with...
  6. B

    Flue problem

    Have a ILFE on a precast block chimney, the problem is the twin wall flue in the loft has failed a flue test, its leaking on a few joints. Can I seal joints with flue cement and re test, if it pases sign off as OK. At moment its ID as the joints leaking. What other methods can i seal the joints...
  7. R

    Central heating pipes and pump corrosion

    I had to replace the central heating pump yesterday evening because the old one stopped working - I think it started leaking and shorted the electricals. As it was so calcified, I just bought a new one plus the top and bottom connection bits. I have attached some pictures of the stuff that is...
    • rallen
    • Thread
    • attach central central heating corrosion heating inhibitor joints pipes pump system water
    • Replies: 14
    • Forum: Plumbing Jobs | The Job-board
  8. B

    high winds

    just got down off roof (bungalow) tv aerial blown down, now just noticed boiler keeps cutting out ? can high winds effect boiler flue operation
  9. O

    Another shocker!!

    Hey Everyone, thought id share my latest shocking discovery. i was replacing the combi boiler anyway as it hadnt been working for over a year (big ole pile). when i went up into the loft to remove the flue this is what i found. the flue had been sellotaped at each joint and when i removed the...
  10. A

    Cool gel

    Anyone go to phex this week and see demonstration on La co cool gel.Seems really good to me.Any bad points bout using this? #
  11. A

    putting pipe under screed

    on copper pipe work are soldered joints either endfeed or yorkshire considered to be part of the pipe or still viewed as a fitting the reason i was asking, i was having a discussion with a colleague about whether access will be required to these type of joints or whether they can be buried in...
  12. S

    Oil: Inserts for compression joints in flexible plastic coated copper pipe??

    If plumbing a feed from a domestic oil tank to a domestic oil boiler using the 10mm or 15mm flexible green plastic coated copper pipe (supplied in coils) must brass inserts always be used in conjunction with a compression fitting? Have they always been used? Is it inevitable a joint will leak...
    • Smt
    • Thread
    • building compression copper flexible inserts joints oil pipe plastic underground
    • Replies: 31
    • Forum: Plumbing Jobs | The Job-board
  13. R

    Buteline pipe

    Has anyone had any experience with BUTELINE plastic piping . just want to know if its any good. Cheers
  14. S

    Hansgrohe I box bath/shower mixer

    Fitting one these and need help!! There's reducers to be made in then do I use male irons? Also tappings for 22 and it's 15 from combi do I take 22 to bath. 15 into to mixer work? Thanks
  15. B

    Compression Joints

    Have switched companies in the last 9 months and have been ORDERED to use PTFE tape on olives. Don't like the idea, prefer paste. Anyone else have a preference?
  16. M

    soldered joints

    Can someone tell me why I'm making such hard work of making a simple soldered joint? I am using FRY Power Flow lead free solder and FRY Power Flow flux. I clean the pipe end with emery till bright and cover with flux, I do the same with the inside of the fitting. Put the two together and...
  17. M

    Use compression joints on a combi system?

    I have to replace an old rad in a bathroom with a towel rad. I can freeze the pipes but would prefer to use compression than solder as only have 12 inches before freeze head. Is it OK to use compression in such circumstances? Any thoughts much appreciated.
  18. C

    Lead to copper joints

    I have read some posts about lead joints recently on UK PF My system for lead to copper is - 1. Bell out the lead to accept eg 15 mm copper tube up to 25mm 2. Get a foot length of copper. Roller cut the end and tin it up with loads of solder on the end 3. Drive it into the lead pipe 4. Warm...
  19. D

    How to do wiped joint in lead waste pipe?

    I'm just old enough to remember watching an old boy replace a lead trap on a lead kitchen sink waste with a new lead trap and was trying to explain the procedure to The Lady Wife. Two problems though - I can't remember exactly how wiped joints were done, and neither can I remember what the...
  20. G

    burst pipe next to gas pipe

    I have had my mains water pipe burst in my garage, it runs up through the garage roof and runs right next to the gas pipe i obviously need to cut out the damaged pipe and replace. Is it possible to solder next to gas pipes or will i have to use comp joints.
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