Search the forum,

additional

The additional member system (AMS), also known as mixed-member proportional representation (MMP) outside the United Kingdom, is a mixed electoral system with one tier of single-member district representatives, and another tier of "additional members" elected to make the overall election results more proportional. While virtually identical to MMP in every other regard, AMS differs from MMP in that AMS does not compensate for the disproportionate results caused by overhang seats (i.e. the legislature is a fixed size under AMS whereas it may vary under MMP).
The term additional member system, introduced by the Hansard Society, has been largely replaced in the literature by the term mixed member proportional coined by New Zealand's Royal Commission on the Electoral System (1984–1986). This article focuses primarily on semi-proportional implementations of MMP used in the UK.

View More On Wikipedia.org
Recent contents Top users
  1. Z

    Vaillant System Boiler With Additional Pump

    Hi, i've got a job with a Vaillant Ecotec 630 system boiler, and i don't know the full history but the house has definitely been extended significantly since the boiler was installed. There's now 21 radiators/towel rails. It's getting to temperature, but even after balancing, it's not heating...
  2. C

    Additional outdoor taps

    Can i add additional outdoor taps by extending an existing outdoor water line (exiting outdoor tap) or does it have to be from the water mains ? will it reduce the water pressure ?
  3. M

    Additional radiator not warm

    Hi all I’ve got a radiator in our conservatory which appears to have been piggybacked off the plumbing from the living room rad on the floor directly above it. It was like this when we moved in, I know it’s not building regs but oh well. The problem is it’s the only one not getting hot since...
  4. eagleeye

    Additional electrical socket for boiler in loft

    Can anyone tell me if its actually a reg or just good practice that a switched socket outlet (as well as a switched spur) MUST be fitted next to boilers in lofts so when service engineer visits there is somewhere to plug in equipment should he need it ? I have always done it but wasnt sure if...
  5. T

    Additional Thermostats or smart solution?

    Hi, We have one programmable thermostat in the landing of our house. This turns on/off all the heating rads and towel rails for the upstairs. I don't know if this is odd or genius, but effectively it means once the landing is up to temp the rads in the bedrooms turn off and obviously don't...
    • TheMiddle36
    • Thread
    • additional america smart solution thermostats usa
    • Replies: 12
    • Forum: USA
  6. S

    Is an additional vent required?

    Hi I have a toilet in a ground floor WC that was served by a maserator. After problems with blocked pipework due to the long run I thought it would be a good idea to have to toilet connected to the sewage system to get rid of the maserator and pipework etc. After having a new ensuite added to...
  7. N

    Would you fit additional isolation valves on boiler pipes?

    Hello everyone. This is a general question, so not linked to any jobs Iv done or 1 particular scenario. The question is would you advise fitting isolation valves on the hot, cold, gas pipes of a new boiler install? Just asking as Iv not seen any boiler installs with isolation valves on these...
    • New Gas Engineer
    • Thread
    • additional america boiler isolation pipes usa valves
    • Replies: 15
    • Forum: USA
  8. townfanjon

    Additional system filter ???

    guys , I fit Magna pro 2’s and love them but I have two customers where I am pretty sure the towel rails are releasing cra* into the system and the filter is missing it because its not magnetic. Any off you fitted a strainer as well as a mag filter ?? Cheers in advance
  9. H

    Baxi combi zoned is additional bypass needed?

    Hi, Just installed U/F heating in my extension so put S plan in with 2 valves on the return. When the valves close the boiler carries on for a little while (orange connected to boiler heat demand). The manual says 'The boiler utilises the primary side of the DHW plate heat exchanger as an...
    • HoodedClaw
    • Thread
    • additional baxi bypass combi forum needed plumbing zone zoned
    • Replies: 3
    • Forum: Plumbing Zone
  10. W

    Add additional radiator

    Hi! Pumped ch/hot water (motorised valve) system has three radiators and towel rail all on 8mm copper. Both flow and return 22mm pipes have four 8mm connections before a stop end. I wish to add a fifth radiator, preferably with 8mm copper. Can anyone please suggest the best way to connect? The...
  11. PolypipeOverlay

    Polypipe Overlay & UFH - Will this need additional Insulation?

    I am working in my house which has a suspended wooden floor. My plan is to remove existing floorboards and fit new 18mm plywood directly onto the joists all around. (the underfloor ventilation was poor and blocked so some of the floorboards are in poor state.) I have already cleared out some of...
  12. T

    Do I need an additional expansion vessel

    Before I call a plumber ......... My boiler (Gloworm 18sxi) slowly loses pressure and I'm having to regularly top it up. There are no obvious leaks anywhere and no discharge from the PRV as far as I can tell. Just reading through the manual for the boiler, it says that it has an internal 8...
  13. Bettyboo

    How to quantify bills from additional electric radiator

    My prospective lodger wants to bring a radiator with him. (He's Greek and likes warm environment in his bedroom.) Does anyone know how I would quantify extra electricity used and costs please? Currently have gas heating Thanks! Betty
  14. T

    Additional one-pipe radiator

    'evening all! Not posted in a while, been busy having major life dramas! Back in the saddle now and have a quick question. Have got to get an extra rad into a one pipe system and wondered if there is an optimum spacing between tees for the flow and return into the new rad? Many thanks in...
  15. D

    Adding additional radiator

    Hi I've got a Worcester Bosch combi boiler in the far corner of my attached garage, pipe run approx 4 metres through garage loft and into the house and start of radiator circuit, I would like to put a radiator in the garage near the boiler, my question is can I just T off the heating pipes near...
  16. G

    Additional air vents on combi pipework

    A customer has a boiler that is sludge up and going to lockout. British gas are insisting on powerflush ok, and fitting an extra automatic air vents on both the flow and return pipe work above the combi boiler because of possible air locks. The system is 15yrs old and I am planning to...
  17. S

    Passed my Inital ACS- Advice on additional courses

    Hello Everyone, I have recently passed my intial ACS and just wanted to know what sort of other courses should i undertake in order to increase my knowledge on boilers etc. Many thanks
  18. F

    Additional PRV

    Hi there, just looking for a bit of confirmation. I've got a Combi with a PRV letting by. It's not the easiest position to replace so I'm thinking I'll just add an additional one on the PRV pipe work. Apart from making sure that it's set to the same max pressure is the one inside the boiler I...
  19. B

    Baxi 105 flue- additional air test point?

    I've come across a few baxi 105e flues, where they go from 4" to 5", they have what looks like an additional air intake test point, but the cap is always missing? Baxi are a nightmare and never know what I'm on about and don't give me the correct part number for the cap. I've just put a female...
  20. R

    Williams & Co 2014 survey - crowdsourcing additional question

    Hi All We will soon be sending out out "2014 State of trade and labour rate" survey. See draft pdf attached for the question list. Questions 1 - 13 and question 15 will not change. We have asked the same question since the survey started, and we won't even re-word one. They may not be perfect...
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock