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above

Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as orthometric heights.
The combination of unit of measurement and the physical quantity (height) is called "metres above mean sea level" in the metric system, while in United States customary and imperial units it would be called "feet above mean sea level".
Mean sea levels are affected by climate change and other factors and change over time. For this and other reasons, recorded measurements of elevation above sea level at a reference time in history might differ from the actual elevation of a given location over sea level at a given moment.

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  1. P

    How you guys doing for work? Keeping your heads above water?

    As above really. I been self employed since last July and had been flat out since. Worked for a firm previously for 8 years and was lucky to have a few contacts. Was subbing as an installer doing 1 job per week for British Gas but their work has thinned out a bit so they look after their own...
  2. M

    Gas Cookers

    Ive got a hob and cooker to fit ( seperate units ), combined output of 11kw. I dont have my viper book at the moment and cant for the life of me remember about room volumes for ventillation. Can anyone help me out? Also when measuring up the room do you do it as if it was empy or do you need to...
  3. C

    problem with heatline solaris 30 pc combi

    hi, i've a problem with the above title. fault code is F4 and i've done everything it says in the flow chart, (cleaning injectors etc) i've even bought new spark electrodes and ionisation electrodes which i thought would of solved the problem but it didn't. here's whats happening, boiler fires...
  4. S

    soil pipe alterations in bathroom

    We are currently working on our bathroom and have a soil pipe that runs from the toilet along the floor to a down pipe in the corner of the room where the waste drops. The pipe also goes up into the loft and vents from the roof. We would like to use this space to install a cupboard so to max the...
  5. R

    Vertex flue

    Any threads on vertex flues and how to test. Came across one today that just didn't look right. The air intake I understand but what I didn't like was the draught diverter which seemed to allow POC to enter the loft???? Can't find any installation instructions or testing instructions. Any...
  6. M

    gas cooker with no high level grill but free standing

    460mm from top of hob to bottom of unit can these dimensions be reduced if the wall units are set back away from the cooker by 200mm :mad:
  7. B

    Internal Pipe in block of flats problem

    Hi folks, firstly if you could somehow explain to me or help me i would be eternally gratefull :cool: my flat and the flat above me both have the same layout, our bathroom and kitchen are to the rear and at the front is the living room and bedroom, i have a bit boxed in at 1 corner of my...
  8. E

    Positive or Negative head pump.. whats the difference.. what do i need??

    Hi, Apologies if this has been posted before.. im still unsure..:confused: As the subject suggest, I need help in purchasing a shower pump. I already have one installed, a Salamander ESP 80 CPV, however, this is a pump, which distinguishes automatically whether the supply is positive or...
  9. S

    Pipe above ceiling or under floor?

    Hi Folks I'm installing a loo in a chaps back passage (fnaar!) which will have a boarded ceiling. He's had someone look at it and they suggested that the pipes should be taken from the kitchen below the ceiling and run across outdoor ceiling and drop into wc. The stopcock etc is by the...
    • smudger
    • Thread
    • above building burst ceiling cold costs floor installation kitchen leak paint pipe pipes stop cock tee tiles tips under underfloor valves wall
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  10. T

    Above ground drainage

    Where would be the best place to purchase above ground drainage in the southampton area. Prices seem to vary so much. For example, a 92.5 degree 110mm branch can be from as little as £3 (in preston) up to £16 down here! Look forward to replies Martin
  11. W

    piperun above feed/expansion tank

    Dear all Due to a slight oversite in the plumbing of our new build house, we realise that the flow and return pipes to one of our two underfloor heating manifolds runs above the f/e tank! The house is single storey with no loft so we cannot raise the f/e tank any higher. The pipes above...
    • Walled
    • Thread
    • above air bar ceiling convert expansion flow heating loft maintain open vented pipes plumber pump seal sealed store system tank thermal ufh underfloor underfloor heating valves water
    • Replies: 11
    • Forum: Plumbing Jobs | The Job-board
  12. T

    Radiator above or close to mains socket.

    What are the rules on this? Bad practice or against the rules? Common sense says bad idea but ive noticed it a few times.
  13. J

    Boiler above sink!!!

    Two years ago British Gas fitted this old gentleman with a worchester Bosch Combi boiler, about 400mm above a kitchen sink. Properly earth bonded but is this legal? Somebody told me that if a Corgi (Gas Safe) engineer entered the property he would have to condemn it. It has already been serviced...
    • John t
    • Thread
    • above bath bathroom boiler boilers central central heating system combi corgi electric fitting free gas gas safe kitchen oil safe shower showers sink wall water
    • Replies: 32
    • Forum: Plumbing Jobs | The Job-board
  14. D

    In the cold winter house doesnt seem to go above 15 degrees on thermostat

    Thankyou to everyone who helped me fix my boiler on my previous thread, now im dealing with a more longstanding problem... I've always been told by gas suppliers etc to have the heating on timed, rather than leave it on all the time on a low tempreture. The problem is at the moment I cant seem...
    • discostewart
    • Thread
    • above boiler boilers central heating system circulation cold combi degrees electronic fix flush gas hot hot water house insulation overheat problem radiators shape system thermostat valves wall water winter
    • Replies: 11
    • Forum: Plumbing Jobs | The Job-board

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