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About chownah

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  1. Wife Opening Small Restaurant

    Yes but competent, bubbly staff will bring them back. Personally, I would prefer to be served by someone who can communicate successfully will ensure my order is correct. If they also happen to be attractive that is a bonus, good service and good food is what makes a restaurant last. So, I guess the OP needs to decide if the target customer will be a tourist who will not be a repeat customer or if it will be a local person who will hopefully make a habit of returning. Chownah
  2. Last Songkran I went to the home of the oldest woman in our village to get her blessing and after I got blessed I asked her (through my wife) if things were better when she was a girl or is it better today....without hesitation she said it was better when she was young. One of her examples was that back then you could carry enough money in your pocket to buy a house (ten baht) but now if you wanted to carry enough money to buy a house it would be way to big to carry in your pocket!!!! Chownah
  3. Weather in Chiang Rai region

    I think what's getting clearer is the fact that it is almost never exceedingly clear in Chiangrai....sad but true. BEEP BEEP,PEEEEEEEEEeeeeeeeeeooooooooooowwwwwwwwwwwwwww, Road Runner
  4. Mae Sai/Tachilek Border Info

    They did not!!!! In fact the power grid was working so efficiently that the voltage got really really high and people were worried that it might burn out their equipment so they turned it all off just to be safe. Power outage!!! Hah!!!! No way!!! Chownah
  5. Asbestos.

    Yes, the 120 cm square cement boards are an asbestos cement product....and so is the corrugated cement board roofing....and the thin wall cement pipes....but don't worry too much because the types of fibres used in these products are the not really very dangerous kind and also the way it is being used in these products stabilizes the fibres so they generally don't sluff off of these products and so don't really cause much of a problem. There are probably alot of other environmental things that should concern us more than the presence of asbestos in these products. I'm sure that many will disagree with me in my estimation of the dangers of these products....I have asked before and I will ask again, does anyone know of the frequency of asbestosis in Thailand...I would think it would be an epidemic since these products are so widespread in Thailand...but I've never heard of asbestosis as being an issue in Thailand at all. Chownah
  6. Asbestos.

    Perhaps the situation is not as dangerous as some people believe. In JimsKnight's post he clearly states: "An even lower grade of Asbestos is asbestos cement (similar to the stuff you see on garage roofs etc), this is still legal to remove yourself (UK) as its below decimal the amount of asbestos inside the cement. I see this everywhere in Thailand! " The asbestos which you will typically run into in a Thai house is infact "asbestos cement". It can be safely removed by a home owner who takes the usual precautions such as not needlessly cutting or crushing so as to avoid making alot of dust...and wearing a filtering mask......basically the same precautions one should take when cutting concrete with an abrasive blade....at least this is what I have heard. Does anyone know the incidence rate of asbestosis in Thailand....since asbestos cement is found everywhere you would think that there would be an epidemic going on. Chownah
  7. Boreholes

    If you should decide to go with galvanized pipe be aware that galvanized pipe is heavy and 45 metres of it will weigh alot...especially if you use 1.5 inch pipe!!!!!...or larger!!!!!.....so you will need to be sure that whatever holds the pipe up (quite often the liner) is adequate.....a pvc boreliner might not be strong enough...I don't know. And by the way....I'm sort of surprised that a 1.5" pipe is used with a one horse power pump. All the one horse pumps I've seen have 1" outlets and are recommended for use with 1" pipe.....but then I have not seen all the pumps in the world either.
  8. Boreholes

    Thinking that a larger diametre pipe holds a greater weight of water so it is more difficult for a pump is, unforturately, incorrect. The things which create the work the pump must do is the PRESSURE AT THE PUMP DISCHARGE and the effort needed to get the water moving. The three things that will affect this are the depth of the water, the flow resistence (friction betweent the water and the pipe), and the velocity of the water (how fast it is flowing). Depth: In any body of still water (important to remember we are talking about water that is not moving for this depth discussion), whether its a lake, a bathtub, a bore, or a pipe, the deeper you go the greater the pressure. It doesn't matter how wide the body of water is....it only depends on how deep you go in the water. This means that the diametre of the pipe does not matter when considering the pressure at your pump for still water (the pump is off). Flow resistence: When water flows it "rubs" on the sides of the pipe and this creates friction....you can think of this as a force on the water that wants to keep it from moving...it is a force which acts counter to the flow and your pump has to work to overcome this force to keep the water moving......when you analyze the hydraulics you will see that this means that the pressure at the pump outlet is higher than for still water....this extra pressure gives the push that overcomes the resistence to flow. If you want to pump the same number of litres per minute through two pipes then the smaller the diametre of the pipe the greater the flow resistence assuming that the pipes are equally smooth on the inside surface. Also any bends will increase the flow resistence....I won't explain exactly why unless asked to do so as its probably just a distraction and not important why. Velocity: To get anything moving that is standing still requires effort. The water in the bore hole is not moving and the pump makes it start moving up the pipe...this requires effort and the faster you want the water to move the more effort it will take. Think about throwing a ball...it takes effort...the faster you through the ball the more effort it takes.....water works the same way even though its a liquid. The faster the water goes in the pipe the more work the pump must do. If you have two pipes with water flowing in both at the same number of litres per minute then the pipe with the smaller diametre will have its water flowing faster (as measured in metres per second) than it will in the larger pipe. This means that it takes less effort for your pump to pump water in the larger pipe. So..........using the smaller pipe will make your pump work harder because of flow resistence and higher velocity in the pipe.....and, while the larger pipe does indeed hold more water it actually decreases the work your pump must do. Chownah
  9. Boreholes

    The good thing about PVC is that if you haul out the pipe and cut it then it is really easy to just glue straight connectors on where you cut it when you reinstall it...and the connectors and glue are really cheap so its a cheap and easy process to pull your pump and then replace it....all you need are straight connectors, glue, and a brush to apply the glue...and maybe a rag to wipe off excess glue if your a neat freak. Just whatever you do don't drop the pipe and pump. When you reinstall the pump you might consider adding a tether so won't need to worry about dropping it next time....maybe you've got one already. Chownah
  10. Asbestos.

    Lingling, Thanks for the link. At least now I have heard of the possibility. This evidence isn't the most convincing but it is evidence never the less. Chownah
  11. Asbestos.

    You are kidding, right? Asbestos is the most commonly used roof materials here, so there is a bit more than "reason to believe". You can be sure that there is a decent amount of asbestos in the BKK dust as they just knock down buildings with asbestos roof, wall panels, pipes etc etc. I have yet to see a construction site where it is _not_ used. Some types of asbestos was made illegal here a few years ago, but that hasn't really had any effect. In addition it is still popular to lay large water pipelines made of asbestos so in some areas you not only inhale it in the dust from construction and demolition sites, but also get it in the tap water. (supposedly only unhealthy if you drink the same water unfiltered) I have never heard that asbestos in water poses a health hazard. Do you have a link that documents this? Chownah
  12. Asbestos.

    I guess that a good reason to believe this is that it is true....roofing, wall and ceiling panels and pipes are all available with asbestos in them. Any idea of the asbestosis rate in Thailand?
  13. Asbestos.

    controversial issue....there are two basic kinds of asbestos....many studies indicate that one kind is bad and one kind is benign.....some people say that none of it is safe...others disagree....google it and read alot alot since there are people on both sides with vested interest.
  14. Boreholes

    hello chownah this was going to be my second question but i forgot to add. the water did come up the 2 inch pipe a few meters from ground level. so with the 3/4 inch pipe do you still send it down to sand/water level or just send it down say about 8 metres thanks for your reply Assuming that you are going with a ground level pump sucking the water up I would send the 3/4 inch pipe down 10.5 metres. The absolute maximum that it is possible to even in theory suck water up in a tube (here on planet earth) is 10.33 metres so I would go a bit further because being longer makes virtually no difference and then for sure you know you have gone far enough. This 10.5 metres would be measured vertically from the highest point in the suction pipe to the inlet at its lowest point down in the well. I mention this because sometimes the suction pipe comes up out of the well and then goes down to the pump in which case you do not measure from the pump but from the highest point in the suction pipe which in this case would be above the pump. Chownah P.S. Running the suction pipe all the way to or near the bottom would work fine too only it would cost more for the pipe and you would have a bit of extra flow friction due to the extra length of pipe...a small amount for sure. Chownah
  15. Boreholes

    Soap, Usually(often) when you drill into a sand layer filled with water the water will rise up inside the bore. If it rises enough then you can have a pump above ground to suck the water out. If it does not rise enough then you will have to put a pump down inside the bore to push the water out....having check valves every so often will not work. The water often rises to the level of the ground water (water table). This varies from month to month and place to place. I don't think that there are any pumps that can be placed down inside a 2 inch liner pipe....at least I have never heard of one but I could be wrong. Chownah