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  1. We have a 500 Liters capacity poly water tank, and a Mitsubishi WP-105Q5 automatic water pump. We want to continue to have constant pressurized water at the farm. So, we are trading in our 12vdc pump system, for a 230vac pump system. At the moment, we can not have a bore drilled, for several reasons. So, we are constructing a foundation to support this little project, for the foreseeable future. Although, by the amounts of ingredients below, it should be done by the Khmer formula, I want it done by "Paul's" formula. C30 concrete is what it will be, after all is said and done - 1 part cement, 2 parts sand, 3 parts gravel. So, we should have some "left overs" after this is done, for other projects coming up. So far, we have the following: 300 bricks @ 250 KHR / brick ----------------------------------------- $18.75 USD 6 sacks of cement @ $4.50 USD per 50 kilogram sack -- $27.00 USD 2 cubic meters of sand, at $12.50 USD / cubic meter ---- $25.00 USD 2 cubic meters of gravel, at $12.50 USD / cubic meter --- $25.00 USD 8.5 kg of reinforcement wire, at $1.00 USD / kilogram ----- $8.50 USD Sub-Total ----------------------------------------------------------------------- $104.25 USD Additional supplies: 2 sacks of cement @ $4.50 USD per 50 kilogram sack -- $9.00 USD 1 finishing trowel ------------------------------------------------------------ $ .63ยข 1 float, 2 meters long ------------------------------------------------------ $ 4.50 We are going to pour a 3.2 meters long, by 1.5 meters wide, by 10 cm thick, concrete slab. ------------------------------- Of course, photos will be added later. Here is my original thread, where I brought up strength of various foundation formulas.
  2. Parrothead

    Concrete Strength Grades

    My father was a general contractor before he retired. But, for years during my life, and many years before, he was a masoonry contractor. As a boy, I learned - if I recall correctly, that mortar mix was 1 sack of mix, 15 shovels of sand, and about 5 gallons of water, in the mixing machine. I don't recall what it was for concrete, as that was usually delivered by truck, to his work sites. So, I am glad I finally - at the age of 50, am learning about the other mix he used on many of the job sites I worked as a boy. Anyway, while doing some research for my projected footings, I started learning a few things about concrete that I wanted to share with those of you who may not know. Concrete strength is rated in grades. C15, C25 and C30, for examples. The grade of the concrete is the concrete compression resistance after it has cured for a bit under a month. 28 days, actually. But, who is counting? The table below will show the parts of cement, sand, and gravel to add, to make the various mixes above, and to achieve the strengths necessary for a given project. Cement : Sand : Gravel : Grade 1 : 2 : 3 : C30 (very strong) 1 : 2 : 4 : C25 (strong) 1 : 2 : 5 : C15 (general purpose concrete) For the money, I would just as soon use C30 for everything, than a lower strength mix. But, that's just me. I would rather make sure my concrete pour is going to be stronger than I need it, than possibly weaker. Pretty difficult to go back and pour it over, once the construction job has been completed. The variable C is equal to the same number in Newtons, per square millimeter, or N/mm2. For the yanks in the classroom, who use the Imperial System of measurements, this would be Pounds per square inch, or PSI. So, C30 would be 30 N/mm2, or 3,059,000 Kilograms of force per square meter kgf/m2, or 4,351 PSI. Pretty damned strong. A lot stronger than I thought it would be.
  3. These images were taken last Wednesday, when we were deciding on where to layout the house and what fill needed to go where. Just so happened that the house got laid out on top of the "old" pond. So, we knew where the fill was going to have to go! Women!
  4. So, Chan recently negotiated the price down to $60 USD / cubic meter of ready-mix concrete. (Hopefully, if we go that route, we will be able to negotiate further.) This was with a guy out near the farm, who is in charge of a project where they are running two - six cubic meter concrete trucks. But, I wanted a comparison, to see what the cost difference would be, by asking Chan to drop by a local place I learned about, here in town (Battambang). The place here in town, wanted $78 USD / cubic meter, to deliver ready-mix out to the farm. A significant price difference, for sure. HOWEVER, she also learned something else. Let me explain something, first. If you haven't read, we recently filled in a pond at the farm, whilst digging another, to build up the land where we wanted to build a small home. The former pond we filled in, aka the future building site, was 3 meters deep. So, we would need to let that dirt settle for a while - I figured one rainy season should do it pretty well, before digging footings and pouring a foundation slab on top of all that. (The last thing I want is for a foundation to crack.) So, we would have to wait about a year in order to build on that land. (See other threads, below.) Now, back to HOWEVER. While Chan was at the concrete place here in town, she learned that they also pour preformed concrete pilings, driving in the ground, for $10 USD / meter. (Seems like a fair price to me?) Anyway, I am not certain of the dimensions of these pilings, yet. We will go there later today (It's well past 5am here now) and check them out. If we can get concrete pilings long enough - I figure 3 meters below the former bottom of the pond. So, they would need to be AT LEAST 6 meters long, if not a bit longer, for this idea to come to life. That is, have this company take X number of piles out to the lot, drive them into the ground at 3 meters below the former pond, and we would have the beginnings of our foundation already in place. Even if we needed say, nine concrete piles driven into the ground, that would be (9 x 6) x $10 = $540 USD. Still $120 USD cheaper than 11 cubic meters of concrete, at $60 USD / cubic meter. 11 x $60 = $660 USD. And, that is NOT including labor OR rebar needed for the foundation. Not to mention, we wouldn't have to worry about forming up pilings, or looking after them for the first week by keeping it wet, etc., while they slowly cure / dry to gain full rated strength. All that was already sorted when they are manufactured. Anyway, just something we are thinking about, as an alternative to going with ready-mix concrete. Associated threads: Filled in one pond and dug a new one today The farm and what's goin' on there:- Photos
  5. Lookin' at building a house - down the road anyway. But, for starters, we had to start filling in a pond and raise the land around it. (Previously, the land had been used for rice farming.) The new pond is 12.3m x 10.6m x 4m. The "old" pond was 19m x 9m x 3m. Old pond: Now, it looks like this: The new pond looks like this: Ultimately, we will build a small house on top of where the "old" pond was. Will have to add more fill dirt first, though, due to massive settling expected.
  6. Primoris Co Ltd

    Bricks and Blocks

    Any House Builders I would like to introduce: Primoris Co Ltd. Phnom Penh. We are westerners operating the first fully automated factory in Cambodia to make high quality concrete bricks and blocks to western standards. We currently produce three sizes of Besser or Cinder blocks, two sizes of bricks, 3 sizes of reinforced kerbing and high strength industrial pavers. We will be introducing more lines in the future. Samples of product are available for testing. Prices will depend on destination and quantity ordered. Please feel free to check out our website. Thank you. Product Information / Pricing List primoris_co_ltd_products.pdf
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