Need help/info Comcast 'box'
10 years ago
last modified: 10 years ago
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- 10 years agolast modified: 10 years ago
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Please Help- Info Needed on Pump?
Comments (1)It all depends on how you want the water to bubble out. Gently, modaretly or very bubbly. Most pumps give a lift volume on the box....See MoreHelp needed to calculate soil weight in boxes
Comments (36)Let's assume you fill the boxes with sand. Keep in mind that sandy soils have a higher bulk density than nearly anything else you would fill these boxes with, including clay. Clay IS NOT HEAVY; clay is cohesive. It sticks to itself so that it only feels "heavy" when plowing or otherwise working the soil. But I digress, build the structure strong enough to fill with sand, and you should be ok filling with anything else. Let's first make some assumptions. We'll say the bulk density (dry mass of soil/total soil volume) is 1.7 g/cm3. This is typical for single-grained structureless sandy soils. Second assumption: particle density (dry soil mass/volume of the solids) is 2.65 g/cm3. This is a typical estimate for the particle density of sands, which is essentially quartz. Knowing these assumptions and the total volume weÂre dealing with, we can calculate the total mass of the solids, total pore space, and the mass of water that will fill that pore space when the soil is saturated. OK, calculate the volume of the boxes. 8 ft x 2 ft x 2.5 ft = 40 ft3. If you have four of these boxes then you have 4 x 40 ft3 = 160 ft3. If you fill these boxes to 1.7 g/cm3 with sand, the total mass will equal the bulk density times the total volume. First, convert your units to metric. 160ft3 x (1m/35.31 ft3) = 4.53 m3. Now you can calculate total mass of the solids. 4.53m3 x 1.7g/cm3 x (1kg/1000g) x (1,000,000 cm3/m3) = 7701 kg. So, all that sand in 160ft3 at a bulk density of 1.7 g/cm3 will weigh 7701kg when completely dry. That will never be the case though. If the soil becomes saturated, then all the pore space will be filled with water. We can calculate the total pore space and, assuming the density of water is 1 g/cm3, calculate the mass of water filling those pores. Total pore space is equal to one minus the quotient of bulk density over particle density. Porosity = 1  (1.7 g/cm3 ÷ 2.65 g/cm3) = 0.358. This number means that for every 1 m3 of total soil volume, there is 0.358 m3 pore space. Just multiply the porosity and the total volume and you get the total pore space. 0.358 x 4.53m3 = 1.62 m3. The density of water is 1000 kg/m3. 1.62 m3 of water would then weigh 1620 kg. Add the mass of the solids and water, 7701 kg + 1620 kg = 9321 kg. There are 2.20 lbs per kg. 9321 kg x (2.20 lb/kg) = 20549 lbs. I would say thatÂs the maximum mass you should expect from your solids at saturation. Keep in mind that I study soils, not engineering. Speak to a license engineer about how to best support your roof safely....See MoreNeed help identifying antique metal lock box please
Comments (6)To post pictures on this site, you have first to up load to the web in a spot with a file sharing program.... Doesn't work to link to your own hard drive. Try Photobucket....it's easiest to post from. Linda C...See MoreNeed help deciding Directv or Infinity ( Comcast )
Comments (25)linda we pay $144.30 for the entire pkg. much depends on what pkg. you sign on for we do not need or want those sports channel pkgs. or any HBO, etc. so our phone person hooked us up with the right pkg. for us and that dramatically reduces your total. She even asked what channels do you really want? we got way over 100 enough for us plus our important ones. P.S. She was so nice she said OMG you're paying for channels you do not even watch or need, let's fix that. LOL...See More- 10 years ago
- 10 years agolast modified: 10 years ago
- 10 years agolast modified: 10 years ago
- 10 years agolast modified: 10 years ago
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