Footballjoe Posted March 19, 2009 Share Posted March 19, 2009 If I have an area 18 ft by 25 ft and I put down gravel 4 inches thick, how many cu yds do I need? How many trash can full is that? My truck is broke. I use to know how to figure it out. It's pretty easy. I wanna say L x W then divide by 1/3 Quote Link to comment Share on other sites More sharing options...
Savage Beatings Posted March 19, 2009 Share Posted March 19, 2009 Is this a math question or a Toby Keith song? Quote Link to comment Share on other sites More sharing options...
Big John Posted March 19, 2009 Share Posted March 19, 2009 (18x25)/9 = 50 sq yd (9 sq ft per sq yd) 50 x 4 /36 = 5.56 cu yd. (36 in per yd) assuming a 30-gallon trash can. (they come in other sizes too) 7.48 gallons per cubic foot * 27 cu ft/cu yd = 201.96 gal / cu yd gallons needed = 5.56 x 201.96 = 1122 gal 1122/30 = 37.4 30-gallon trash cans Quote Link to comment Share on other sites More sharing options...
Big Country Posted March 19, 2009 Share Posted March 19, 2009 (edited) If I have an area 18 ft by 25 ft and I put down gravel 4 inches thick, how many cu yds do I need? How many trash can full is that? My truck is broke. I use to know how to figure it out. It's pretty easy. I wanna say L x W then divide by 1/3 I think that would give cubic feet, not cubic yards, but, then again, been a while. 18*25=450*(4/12)= 150 cub. ft. I believe yards would basically be (18/3)*(25/3)*((4/12)/3)=5.55 cu. yds or basically cubic ft divided by 27 ETA: I see Big John beat me to the cu yd calculation but confirms the calculation, then he went the extra mile. Edited March 19, 2009 by Big Country Quote Link to comment Share on other sites More sharing options...
Footballjoe Posted March 19, 2009 Author Share Posted March 19, 2009 (18x25)/9 = 50 sq yd (9 sq ft per sq yd)50 x 4 /36 = 5.56 cu yd. (36 in per yd) assuming a 30-gallon trash can. (they come in other sizes too) 7.48 gallons per cubic foot * 27 cu ft/cu yd = 201.96 gal / cu yd gallons needed = 5.56 x 201.96 = 1122 gal 1122/30 = 37.4 30-gallon trash cans Thanks. I guess I need to get that transmission fixed cause I ain't haulin 37.4 trash cans. Quote Link to comment Share on other sites More sharing options...
Caveman_Nick Posted March 20, 2009 Share Posted March 20, 2009 Thanks. I guess I need to get that transmission fixed cause I ain't haulin 37.4 trash cans. Or you could have the company you buy it from just drop it off. Quote Link to comment Share on other sites More sharing options...
McBoog Posted March 20, 2009 Share Posted March 20, 2009 Where am I going wrong? I always convert to the lowest base, then convert to the desired volume. 18 ft = 216 in 25 ft = 300 in 4 in = 4 in Volume is equal to Height X Width X Depth or 216 x 300 x 4 = 259,200 square inches. 1728 square inches = 1 square foot or 259200 / 1728 = 150 square feet. 27 square feet = 1 square yard or 150 / 27 = 5.56 square yards. 1 cubic yard = 173.569... gallon [uS, dry] 5.56 X 173.57 = 965 Dry Gallons of rock. Assuming a 30 gallon trashcan (that would not be strong enough to support the weight), You would need about 32 trashcans full. In other words. Fix the tranny or have it delivered. I go with "B"! Quote Link to comment Share on other sites More sharing options...
Big John Posted March 20, 2009 Share Posted March 20, 2009 1 cubic yard = 173.569... gallon [uS, dry] 5.56 X 173.57 = 965 Dry Gallons of rock. Assuming a 30 gallon trashcan (that would not be strong enough to support the weight), You would need about 32 trashcans full. In other words. Fix the tranny or have it delivered. I go with "B"! I had always used gallons as meaning liquid gallons, so I had to look things up and saw that a "dry gallon" is not the same volume, actually a bit larger volume, so if trash cans are measured in dry gallons (they generally just say "gallons" without specifying which type) then your calcs are correct. Quote Link to comment Share on other sites More sharing options...
rocknrobn26 Posted March 20, 2009 Share Posted March 20, 2009 I had always used gallons as meaning liquid gallons, so I had to look things up and saw that a "dry gallon" is not the same volume, actually a bit larger volume, so if trash cans are measured in dry gallons (they generally just say "gallons" without specifying which type) then your calcs are correct. 1 dry gallon = 1.1636471861471861471861471861472 wet gallons. Quote Link to comment Share on other sites More sharing options...
TimC Posted March 20, 2009 Share Posted March 20, 2009 Speaking of trucks...I was checking this Load Handler for mine. I'm still deciding if I'm going to hardscape the back yard myself with pavers and walls or just be lazy and pay some guy to do stamped concrete. Load Handler Cargo Unloader For $150.00 this sucker would save a ton of work. Quote Link to comment Share on other sites More sharing options...
Big Country Posted March 20, 2009 Share Posted March 20, 2009 I was checking this Load Handler for mine. I have one of those. I call it "the wife". Quote Link to comment Share on other sites More sharing options...
McBoog Posted March 20, 2009 Share Posted March 20, 2009 I had always used gallons as meaning liquid gallons, so I had to look things up and saw that a "dry gallon" is not the same volume, actually a bit larger volume, so if trash cans are measured in dry gallons (they generally just say "gallons" without specifying which type) then your calcs are correct. But you were also kind enough to not point out I kept saying "squared" when I should have said "cubed". I am also not sure which one, dry or wet, that crash cans are measured in. So you may be correct sir! Quote Link to comment Share on other sites More sharing options...
i_am_the_swammi Posted March 20, 2009 Share Posted March 20, 2009 I call it "the wife". Quote Link to comment Share on other sites More sharing options...
i_am_the_swammi Posted March 20, 2009 Share Posted March 20, 2009 I call it "the wife". Quote Link to comment Share on other sites More sharing options...
whomper Posted March 20, 2009 Share Posted March 20, 2009 Is this a math question or a Toby Keith song? I have one of those. I call it "the wife". Never did I think a math question thread would have 2 gems like this. Nice work gentlemen Quote Link to comment Share on other sites More sharing options...
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