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size

Size in general is the magnitude or dimensions of a thing. More specifically, geometrical size (or spatial size) can refer to linear dimensions (length, width, height, diameter, perimeter), area, or volume. Size can also be measured in terms of mass, especially when assuming a density range.

In mathematical terms, "size is a concept abstracted from the process of measuring by comparing a longer to a shorter". Size is determined by the process of comparing or measuring objects, which results in the determination of the magnitude of a quantity, such as length or mass, relative to a unit of measurement. Such a magnitude is usually expressed as a numerical value of units on a previously established spatial scale, such as meters or inches.
The sizes with which humans tend to be most familiar are body dimensions (measures of anthropometry), which include measures such as human height and human body weight. These measures can, in the aggregate, allow the generation of commercially useful distributions of products that accommodate expected body sizes, as with the creation of clothing sizes and shoe sizes, and with the standardization of door frame dimensions, ceiling heights, and bed sizes. The human experience of size can lead to a psychological tendency towards size bias, wherein the relative importance or perceived complexity of organisms and other objects is judged based on their size relative to humans, and particularly whether this size makes them easy to observe without aid.

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  1. C

    Looking for the size of the bathroom tap valve

    My bathroom tap is dripping water, I want to change the tap valve, but I don't know the valve size, if somebody familiar with the type of tap, please tell me the valve size. Thank you in advanced.
  2. N

    Cistern push button size question

    Recently replaced an enclosed cistern with one of the exact same size but the new push flush button (pneumatic) is far larger than the old one (cable-operated). We would prefer to keep the smaller button but have been told that the large button will be needed to effectively operate the cistern...
  3. dilligaf

    What size bottle trap for bathroom basin with a O/D 36mm waste pipe?

    Can anyone tell me what size bottle trap for the basin in the bathroom for a 36mm O/D waste pipe? Most bottle traps seem to be listed as 32mm or 40mm?
  4. J

    Gas pipe size

    I have a 22mm gas pipe going from my meter in the garage to my boiler in the kitchen. It has a 15mm t off the 22mm for a gas cooker. There is 8.5m of 22mm plus 6 90 degree bends, easily accessible in the garage, and 5m in the kitchen that will be difficult to access. If i change the 22mm in the...
    • Jaybrian
    • Thread
    • america gas gas pipe pipe pipe size size usa
    • Replies: 14
    • Forum: USA
  5. P

    Vaillant Boiler Size

    Hi, We have an ecotech plus 837 in our house that was originally over rated on installation. It was installed based on the hot water flow rate and told that the heating would modulate itself down accordingly. This is the case in very cold weather but not when its a bit warmer. It is now...
    • prs999
    • Thread
    • america boiler size usa vaillant
    • Replies: 10
    • Forum: USA
  6. S

    50mm Waste pipe hole size

    What hole size would you recommend drilling for 50mm waste pipe that needs to go through a joist? Joist is 200 deep so a 55mm hole is already a bit over the recommended size for that joist.
    • Serval
    • Thread
    • america pipe size usa waste waste pipe
    • Replies: 5
    • Forum: USA
  7. H

    Waste pipe size?

    Hello, I am looking to move some waste pipes in my house as I will be relocating a washing machine. My question is what size waste pipe do I have. I have measured with a gauge and get 56.08mm on the outer diameter. My understanding was the common sizes are 32, 40 and 50mm, I am aware there...
    • himmerz
    • Thread
    • america pipe pipe size size usa waste waste pipe
    • Replies: 3
    • Forum: USA
  8. T

    New Boiler Size

    Need a new boiler and have had a quotation from a local company who have recommended a 24Kw boiler. From the choices we have taken a Worcester Greenstar 24RI. However, I have a slight concern that this boiler may not be powerful enough as most articles on the web say it for use in a small or...
    • thomasar
    • Thread
    • america boiler new new boiler size usa
    • Replies: 7
    • Forum: USA
  9. Stants

    Pipework size query for wetroom shower tray

    Hi I'm laying the pipework in for a wetroom showertay The trap is outlet 50 mm so was thinking of running it all in 50 mm so does this sound ok , any problems with syphonage or anything else for that matter 2 mtrs Straight , drops down through soffit , turns left ( swept bend )1.5 mtrs into...
  10. Stants

    Worcester Bosch 30 Ri or Worcester Combi equivalent size

    Hi I was initially having a Megaflo ( 170 L ) and a Worcester Bosch 30 ( RI System Boiler ) in a loft conversion The guy that was doing the work can no longer do it so I was getting another quote for the same set up and the question came up again " why don't you have a Combi boiler (...
  11. @

    How to determine the right shape and size of a Wirquin Macdee Metro Rapid siphon for a specific cistern

    I am planning to get a new WC for the downstairs cloakroom in our house. We have two possible WCs in mind. Both have a cistern with a lever rather than a push button on the middle of the lid, which is what my wife and I prefer. I am concerned about the siphons supplied with the cisterns. I have...
    • @TonyC
    • Thread
    • america cistern right shape siphon size specific usa wirquin
    • Replies: 7
    • Forum: USA
  12. D

    Kitchen tap thread size

    Hi I need to replace both hot/cold taps as they have done 20 years service, I looked at various sites and the thread size is quoted as "G1/2" now the dumb bit, is this referring to the copper pipe size thats fits into the tap or is it the external thread size f the tap. Thanks for any info.
  13. S

    Estimated size calorifier

    Hi, what estimated size calorifier would be needed for a 5200 square meter college building.
  14. L

    First fix pipe size?

    Hi, I'm about to pipe up my upstairs cold water to sinks and showers. It's a large 4 bed house, stopcock in the kitchen, middle of house outside wall, presently with 25mm pipe into a tap for building water. So upstairs sinks and showers are piped with tails hanging down in 15mm JG speedfit...
    • Luggsey
    • Thread
    • america first fix pipe pipe size size usa
    • Replies: 13
    • Forum: USA
  15. Reddwarf4ever

    Bore size for a shower hose with a Fully pumped supply

    this may sound a basic question, but it is important. I have seen so many conflicting opinions, even from manufacturers. Some say, just use the biggest bore possible, others say use a small bore 8mm for a fully pumped system & a large bore 11mm for a gravity system. There must be a reason why...
  16. K

    LPG injector size?

    Maybe I'm being a bit lazy but can anyone help me with the output of jets/nozzles by size on LPG at around 30mb? Its not thrilling but I'm looking at some redneck style testing on campervan ventilation requirements (BS EN 721 clause 6, if anyone's as bored as me).
  17. N

    How to size a boiler

    Just doing my ACS and I was hoping the course taught you how to correctly size a boiler. Turns out it doesn’t, just wondering how you guys size a boiler whether it’s be system, heat only or combi
    • New_gas
    • Thread
    • america boiler size usa
    • Replies: 5
    • Forum: USA
  18. B

    Where can I get two rads like this? Unusual size!

    Hi All, I need to replace two radiators in on of my rooms. The size does not seem to be available from normal suppliers. I think it is an imperial size 32 wide by 16" high. I need to replace as they are not in great condition around the threads. You might see the corrosion in the image I will...
    • blokeinlondon
    • Thread
    • america cold radiator hot rads size unusual usa where
    • Replies: 2
    • Forum: USA
  19. M

    What size pipe for shower mixer

    Hi there! First post, so go easy on me. Please could I have some advice? I’m over-thinking something and it seems the type of HW system has a bearing on what size pipe is best for certain applications, so what better place to ask this question than a plumber’s forum? I have an unvented HW...
    • Matt K
    • Thread
    • america mixer pipe pipe size shower shower mixer size usa
    • Replies: 3
    • Forum: USA
  20. M

    Tilbrook Radiator size

    In a bathroom which measures 2.53 sqm with a height of 2.66 m, which 2000 mm tall Tilbrook radiator would you suggest would be required? Using a combi boiler system with central heating temperature of 60 C...
    • Mossop
    • Thread
    • america radiator radiators size usa
    • Replies: 2
    • Forum: USA
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