How heavy are landscape BOULDERS and how do I figure coverage? скачать в хорошем качестве

How heavy are landscape BOULDERS and how do I figure coverage?

Want to add some boulders to your next landscape project? To figure you'll need to know how many and what size of rocks you require. Boulders are usually sorted by approximate diameters of: 8-18", 18-24", 24-30", 30-36" and 36-48". Boulders are sold by the ton. A ton equals 2,000 pounds. This video shows how deceptive boulder weights can be. Two similar sized boulders can really vary in weight. The first two boulders shown are approximately 12" in diameter but one weighs 80 lbs. and the other 160 lbs. So remember that figuring for a boulder project is not an exact science. You're figures will be approximate. It's best to always round up on your figures so you don't run short on material once you start your project. One way to figure how many boulders you'll need is by weight. If you see a boulder size you like you can times the weight of it by how many you need and then divide that number into 2,000 to equal how many tons needed for your project. Example: Figuring wall by the weight. 10 boulders x 540 lbs = 5,400 lbs. Then take 5,400 lbs and divide it into 2,000. This will equal approx. 2.7 tons you need for your project. Remember to always round up - so you'll need approx. 3 tons. Because boulders can vary in weight based on density, rock type and shape, a more accurate way to figure a project is by the square face foot. General rule for boulder coverage is: (1 ton = 2,000 lbs) 8"-18" diameter boulders covers approx. 12 square face feet per ton 18"-24" diameter boulders covers approx. 9 square face feet per ton 24"-30" diameter boulders covers approx. 5 square face feet per ton 30"-36" diameter boulders covers approx. 4 square face feet per ton Over 36" diameter boulders cover under 3 square face feet per ton Example: Figuring a wall by square face feet. Determine how long and how high you want your wall to be. Let's say the wall will be 10 feet long by 2 feet high and you want to use the 18-24" size boulders that cover 9 square face feet per ton. Times your length by your height. 10 feet long x 2 feet high = 20 square face feet (sff) 20 sff divided by 9 sff = approx. 2.22 tons needed for job Remember to always round up - so you'll need approx. 3 tons. More information available at www.rocksnroots.com