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couple
In mechanics, a couple is a system of forces with a resultant (a.k.a. net or sum) moment but no resultant force.A better term is force couple or pure moment. Its effect is to create rotation without translation. In rigid body mechanics, force couples are free vectors, meaning their effects on a body are independent of the point of application.
The resultant moment of a couple is called a torque. This is not to be confused with the term torque as it is used in physics, where it is merely a synonym of moment. Instead, torque is a special case of moment. Torque has special properties that moment does not have, in particular the property of being independent of reference point, as described below.
Hello - We recently had a recommended Heating engineer install a brand new CH system with a Worcester Bosch Greenstar 1.8i boiler configured as a system boiler and 16 rads, with TRV's and room stat.
There are a couple of things he didn't complete to my satisfaction but I appreciate some...
Hi guys i'm doing a job tomorrow for a guy who is having his done up before he moves in.
The job is run pipes under floor in ensuite for shower, basin, toilet and towel rail.
All in plastic/push fit.
The floor is mostly up for what i need to do and the walls just have plaster board on so I...
Hi, could any of you kind people recommend a close couple fitting kit? Seen some bad reports about the Screwfix ones (plate bending and no rubber washers for the screws) I would rather spend more money on a decent kit rather than run into problems. Thanks in advance.
I've been at it again.
Been neglecting my bender so thought I'd put it to use today.
Hot and cold feed to basin need to clear a couple of heating pipes
Every bend is one less potential leak!!
Hey guys
as the cold approaches and i have a few contracts with maintenance and servicing.
i need to do a van stock for boilers fires etc, i know i cant carry it all but could you guys point me in the direction of what would be easy to carry, thermisters, diaphrams etc and for what boilers. I...
A 22 year old man with ‘weird looking’ eyes and ‘sewn on’ hair claimed he is Britain’s first ‘Test Card Baby’, the result of a long standing on-screen relationship between Bubbles the clown and Marcia Jackson. The pair were famous for their appearances on the BBC test card from 1967-1998...
Read the article especially HSE Inspectors view
A Lincolnshire plumber has been prosecuted for carrying out illegal gas work after a couple suffered severe burns in a major explosion at their home.
Daniel George Hickling, trading as DGH Plumbing and Heating, was hired by the couple to...
Hi there,
I fitted a new siphon to my toilet yesterday, also replaced the closed coupling connector, all ok but now I have had to make the screw on the ball cock valve to be at the maxium it can be otherwise the ball float gets stuck on the new siphon and does not stop the water from the inlet...
Jimb7174
Thread
after
closed
couple
fitted
flush
issue
oil
siphon
toilet
Hi guys, hope someone here can help a bit.
I've got a procombi 120he. had it about 4yrs.
Every 3 or 4 months I get this problem that the hot water cycles on and off.
So I'll be running a hot tap, the boiler fires up, runs finen for 20-30secs then clicks off.
No red light, or lock out.
then a...
preferrably designer / high end stuff, not looking for the cheapest thing going.
any advice for choosing one rad / sink / toilet over another, besides looks and price?
assuming it's better to buy online than in a shop, bath store / whatever / whatever?
cheers
laike
Thread
buying
cold radiator
couple
hot rads
local
oil
online
recommend
sinks
stuff
toilets
Hi,
Going on a baxi course soon and will be learning how to correctly use multi meter.
Dont mind spending if I have to but do I have to spend £60-70 on one or will a cheap £20 one do the trick. I had one in the shed but think the rain got to it..it all looks ok but think it might need...
Hi All
Experiencing major problems accessing their self study work books and technical stuff. Looks like a great website and would be even better if I could use it! Not getting much feedback from there support team, anybody else a member out there and have the same problem? or is my laptop...
Hi,
last few days I have been getting a couple of odd noises with my toilet
1) after it has flushed, and just before it is about to fill up cisten again I hear a loud clunk from loft and then it starts filling up as normal - doesn't do it everytime, but most
2) then while it is filling...
Anyone know where I can get replacement bolts and washers for a bolt through close couple cistern? Got a toilet to repair and the old bolts are rusted up to the max.
Local suppliers no good and can't even find them on Plumbfix
Purchased some 3/4" blanking caps from tool station today and I didn't check them until I got home but they didn't come with any rubber washers inside. I need to blank off a wheelhead valve because the rads been removed for decoration and the valve still leaks. Will a fibre washer in the inside...
Hi guys. I've got a potterton profile 80he. It fires up eventually, and will stay on, but first thing in the morning it struggles and needs resetting.
The fan will run on and off for a minute or so. I can hear the air pressure switch clicking. The flue is fine, the case seals are fine, I...
Im looking for a couple of quotes for work in the S44 area. Its not a massive job but im not confident enough to attempt it myself.
Its to remove a radiator from the kitchen as we are planning on a kitchen refit (which you can also quote for if you do that sort of thing)
If you could send me...
Hi, looking for a bit of advice i have a mini c24 that’s leaking from the auto air vent, was just a drip or two but now a bit of a torrent like 2 liters in the past couple of days.
It has another problem that i have been living with for a year or so that may help any diagnosis, which is that...
boyley24
Thread
air
air vent
couple
help
ideal
leaking
mini
plumber
round
system
vent
water
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