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metres
The metre (Commonwealth spelling) or meter (American spelling; see spelling differences) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in the International System of Units (SI). The SI unit symbol is m.
The metre is currently defined as the length of the path travelled by light in a vacuum in 1/299 792 458 of a second.
The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km. In 1799, the metre was redefined in terms of a prototype metre bar (the actual bar used was changed in 1889). In 1960, the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86. The current definition was adopted in 1983 and modified slightly in 2002 to clarify that the metre is a measure of proper length.
hello - I am curious if there is a plumbing standard or electrical standard that applies. Situation is unit block, old 50's apartment - 10+ electrical meters in wire cage together. Someone has put forward a bylaw change that will allow them to run kitchen piping in body corporate areas that will...
Beccaa
Thread
america
block
electrical
meters
metres
new
plumbing
usa
water issue
Hi all, can anyone assist me with locating somewhere from which to purchase a long length (at least 4 metres) of 40mm diameter standard flexible sink waste pipe? I have been searching all over the place and nowhere seems to sell it in long lengths, only the standard lengths. I just need it to...
Hi... Wavin 22mm Hep20 coiled pipe..... flow 12.5 ltr/minute...(at nominal mains water pressure at inlet) What I need to know is the expected water pressure drop over 50 metres. Many thanks in anticipation ...Nick
hdp160
Thread
calculation
help
help needed
metres
needed
pressure
total
water
I've just started the build of a rear house extension and would like there to be under floor heating connected to the existing Vaillant 637 system boiler with 470F weather compensator.
The floor will have 100mm PIR insulation and will have 65-75mm of screed on top so I'm looking to attach/clip...
SomebodE
Thread
boiler
central heating system
floor
metres
ufh
under floor heating
underfloor
underfloor heating
vaillant
Hi All,
I have loads of 20mm and 25mm but I recently carried out a water main repair for a customer that had a rupture in 32mm blue MDPE. I will gladly buy a reel of 32 mm if needs be but will have little use for the rest of the reel. I was wondering if anyone has 2 metres they could sell to me...
I’ve never been too happy with the condensing Vaillant EcoMax Pro 28E that replaced our original cast iron boiler heating our vented microbore system. The house didn’t seem to get any warmer than before the changeover about 5 years ago, but I’ve been told everything was OK so I did nothing about...
Hello, Do you need planning permission to install an oil tank underground?
Planning portal says
Installing a fuel tank is considered to be permitted development, not needing planning permission, subject to the following limits and conditions:
Not more than 3,500 litres capacity.
Not forward...
30 METRES OF 22MM COPPER TUBE, 1 BUNDLE, 10 3 METRE LENTHS, COLLECTION ONLY, NEW, UNSUSED. 25 22mm ENDFEED ELBOWS AND 25 COUPLINGS ALL NEW ,
CASH ON COLLECTION £100
Im quoting for a new boiler but noticed the tank outlet is about 4 metres above the pump. I cant find in my books anything to prescribe when to use a pressure reducer. Anyone have any guidance? Doesnt appear to be in the MI.
Thanks
Bunker
Thread
above
head
level
maximum
metres
oil
oil tank
reducer
tank
Hi,
I wonder if anyone can tell me the maximum length i can run a 40mm kitchen waste?
This kitchen waste is only for rinsing the odd cup or that based in a pound-shop.
The kitchen sink is 12 metres away from an open drain at the back of the shop and cannot run out the front because it...
Hi
I would like to hire a plumber and/or landscaper to put a rainwater drain beside my brick-built garden shed.
I get a lot of surface water in the garden and it goes into the shed.
If money isn't an object, can I ask a plumber to do the following:
1) Put a drain near my shed
2) Connect...
steve_f
Thread
connect
drain
metres
plumber
rainwater
sewer
water
I'm currently building a new house and have bought an underground storage tank. The tank is 50m from the boiler room where I will have 2 boilers ( 1 for UFH/HW and 1 for the swimming pool). What I need to know if what size pipe do I need to run from the tank to the boiler room to make sure...
Jez
Thread
boiler
boilers
height
metres
oil
oil tank
pipe
suction
tank
work
Okay, my fault, but I'm fitting a combi boiler in a renovation property & noticed today the new owners have a pre payment card meter! ... No card!!!
Is there a way to get it to give me gas for my commissioning etc? Or can I buy a pre payment card?
An alternative, can I make a meter bypass...
Does any one know how to translate 100 cm square ventilation into air exchange rate?
I think this might change the air in the room at between 5 cubic metres per hour and 20 cubic metres per hour on average.
with 10m3/hour being a reasonable estimate.
If I am right then adventageous air would...
I plan to have installed a new heating system.baxi main 30 kw boiler,10 radiators+valves,wirelesss room stst/programmer,magna clean,new 3 metre length gas supply 22mm.The existing fire/back boiler,hot water cylinder needs de-commisioning also.The house is semi detatched,10 metres in length x 5...
toshlink
Thread
central heating
heating
installation
metres
necessary
quotes
Hi all,
I have just bought a 5 storey, grade A listed townhouse to renovate. It is currently used as offices and has a large boiler which is quite old with thin radiators with no thermostats in each room. I will be upgrading the full system and the house will have a bathroom with shower on...
hi i understand the longest run you can have on soil is 6 metres (horizontally), but what about when you add bends, is there a equation? or do certain bends equant for .25 of a metre or anything?
any advice would be greatly aprreciated
cheers
plumber89
Thread
about
bends
horizontal
metre
metres
oil
should
soil
stack
I want to move the toilets in a warehouse but they will be a long way from the existing waste pipe , Is thow far will here a way of doing this ?? bigger flush/ pump ?? its about 35 mtrs and around 3 bends
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