function UnitConverter(value,unit){ But if you do not have this information, you can still get an approximate weight using the approximate size of the rock. The weight is given in a range because not all stones of the same type weigh the same. Once you've decided which rock to choose, we can already start calculating. Accordingly, a 1000 cm3 piece of bauxite weighs about 2400 to 2600 grams (5.3 to 5.73 pounds). return false; Likewise, the right combination of rocks, sticks, dried flowers, and other items will look fantastic. To get an actual weight instead of a range, you can work with the median of the density range. They also come in a variety of colors depending on the minerals present in them. function updateTotals() { if(unit=="3") per cubic yard, Washed Gravel1.35 tons (2,700 lb.) }); document.calculator.img2.src="http://www.artfiberglass.com/calc/images/inner.jpg"; And accordingly, the densities of such rocks differ. document.calculator.units1.selectedIndex="3"; . For instance, calculate how many ounces, pounds, milligrams, grams, kilograms or tonnes of a selected substance in a liter, gallon, fluid ounce, cubic centimeter or in a cubic inch. In the article, you will learn how to calculate river rock volume and its corresponding weight using the densities of different river rocks. BOULDER AND STONE WEIGHT CALCULATIONS | landscapingu if(MatlSelect=="0"){ "); Of course, determining the weight of a rock by its density is subject to you knowing the rock type. 5 x .25 (3 inches of pea gravel, in feet) = 19.625. Convert its weight in pounds to tonnage by dividing . Phone 831.768.2300. This makes their average volume 0.258 cubic feet. document.calculator.density.value=MatlSelect; if(selShape=="1"){ Graniterocks series of on-line Construction Calculators will help you estimate the amount of material that you will need for your construction jobs. alert("You must enter a value for each dimension. Boulder and Stone Weights. Before we proceed to the calculation of the volume and weight of your river rock, let us first explore some of the different river rocks we can choose from. document.calculator.units2.selectedIndex="3"; The volume formula for a rectangular (or square) box in cubic feet is height (ft) x width (ft) x length (ft), as seen in the figure below: For example, to fill a box with a width of 3ft and a . natural stone sizes and weights change with the stone(s)). (Complete Procedure)Continue, Rock-hounding is a collection of activities that center on rocks and rock collectors. (If Yes, How? Values[4]=document.calculator.qty.value; QuickRMR: A Rock Mass Rating (RMR) calculator based on continuous functions var selShape; The density range of rhyolite is 2.35 to 2.7 g/cm3, and the median density is 2.53 g/cm3. CALCULATE A CUBIC YARD: length x width x depth---divided by 27 = the cubic yard (use .5 for 6 inch measurements) 1 YARD COVERS A AREA AT: 2" deep--162 square feet 3" deep--108 square feet (note: all figers are approx. Enter volume, select a unit of volume, and specify a material or substance to search for. updateTotals(); Marble * Granite * Stone * Miscellaneous. var selShape; Because it's direct from the quarry and we operate our own trucks (we deliver or you can use your own transport) our quotes are very competitive. Multiply all three dimensions together, and you get the approximate volume of the rock. How Much Do Rocks Weigh? Pictures, Examples & Calculations t5 = jQuery("#l5").val() * jQuery("#w5").val(); Turkey, drumstick, roasted, skin eaten contain(s) 203 calories per 100 grams (3.53 ounces) [ price ], 1246 foods that contain Hydroxyproline. Shape=document.calculator.shape.selectedIndex; For example, let's find the amount of gravel needed for a space that is 10 feet long, 10 feet wide, and 1 foot deep. Download the .zip file containing the software here: QuickRMR_win. document.calculator.units3.selectedIndex="6"; To do this, get a measuring tape or a ruler. These suppliers may offer you a truckload of river rocks for larger projects, depending on their availability. document.calculator.img3.src="https://www.artfiberglass.com/calc/images/length.jpg"; But the weights may range from 0.1 grams to 3 grams (0.0035 to 0.11 ounces). Can you reuse, Read More Can You Reuse Rock Polishing Grit? document.calculator.imgshape.src="https://www.artfiberglass.com/calc/images/sheet.jpg"; Weight=(Values[0] * 0.5236 * Values[1] * Values[1] * Values[1] * Values[4]); if(unit=="1") document.calculator.img2.src="https://www.artfiberglass.com/calc/images/width.jpg"; Coupled with a little preparation, this calculator will ensure that your project will be a walk in the park! if((selShape=="0"||selShape=="6")&&(val2=="")){ document.calculator.img1.src="https://www.artfiberglass.com/calc/images/gauge.jpg"; Units[3]=document.calculator.units3.options[document.calculator.units3.selectedIndex].text; (Read Before Buying! Accurate calculations will save you time and money, whether you are budgeting for a DIY project or checking behind your contractor. The calculator will select the first non-blank value it encounters, and convert that value to each of the other units on teh calculator's display. How do you calculate the weight of granite? - Short-Fact } In specific locations, we may find many of the same rock types that we can collect and use at home. "+H}}return E}function refresh(){var A=format(value);if(exponent){if(Hj<0){A+=" "+Hj}else{A+=" +"+Hj}}if(A.indexOf(". Ball etc. To get an actual weight instead of a range, you can work with the median of the density range. sure to choose proper unit. if(selShape=="6"){ Phone: 1 541-359-4708, Weight Calculator } Now, enter in depth, how deep do you want to fill the layout of your surface, e.g., 3 inches. When multiplied by 165 pounds, the result is 34.98 pounds. 186.0. document.calculator.img2.src="https://www.artfiberglass.com/calc/images/notreq.jpg"; } The density range of granite is 2.50 to 2.81 g/cm3, so a 1000 cm3 granite weighs between 2500 and 2810 grams (5.5 and 6.2 pounds). var img3; if(Weight<"0.0001"){ document.calculator.value3.value=""; Emery is pretty hard, so its density is a bit higher than the rest we have seen so far. Stone vendors sell landscape rock by the cubic yard, which is calculated by the volume of material. "}else{j=E.length-1;while(j>=0&&E.charAt(j)=="0"){--j}E=E.substring(0,j+1)}E+=" "+A}else{var J=false;if(I<0){I=-I;J=true}var C=Math.floor(I);var K=I-C;var D=totalDigits-(""+C).length-1;if(!entered&&fixed>0){D=fixed}var F=" 1000000000000000000".substring(1,D+2)+"";if((F=="")||(F==" ")){F=1}else{F=parseInt(F)}var B=Math.floor(K*F+0.5);C=Math.floor(Math.floor(I*F+0.5)/F);if(J){E="-"+C}else{E=""+C}var H="00000000000000"+B;H=H.substring(H.length-D,H.length);G=H.length-1;if(entered||fixed==0){while(G>=0&&H.charAt(G)=="0"){--G}H=H.substring(0,G+1)}if(G>=0){E+=". . How to Calculate Boulders in Tons | Hunker document.calculator.img3.src="https://www.artfiberglass.com/calc/images/notreq.jpg"; But if you cannot lift the rock, you may be unable to use it. On average, standard basketballs have a diameter of 9.47 inches. } To find how much river rock you need, here are the steps to follow: You are at the right place to find how much area or square footage a certain volume or weight of river rock can cover. Andesite rocks have a density range between 2.4 and 2.8 g/cm3. var MatlSelect; QuickRMR is an open source licensed (GNU General Public License 3.0) software which can can currently run on Windows OS. You first have to enter the volume or weight of the available river rock you have, whichever value is known for this requirement. The calculator will evaluate the. Of course, there will be some landscaping rocks smaller or bigger than this. var MatlSelect; Landscaping rocks are basically rocks used in landscaping. The calculator will evaluate the. So, a 1000 cm3 piece of pumice weighs about 700 to 1200 grams (1.5 to 2.6 pounds). You can modify the dimensions to meet your own requirements. By putting your stylistic imprint on your displays in glass jars, you can jazz up your window, Read More How to Display Rocks in a Jar? document.calculator.weight2.value=WeightTemp2; These Unit Conversion calculators allow you to easily convert between various Englisn and Metric units for length, area, volume, weight, temperature, pressure, and force. if(unit=="inch") /* function DensityConverter(value,unit){ Units[1]=document.calculator.units1.options[document.calculator.units1.selectedIndex].text; Check the grading on the side of the container that corresponds with the water level. Smaller rocks can be placed on a scale to find their weight easily. WeightTemp=Math.round(WeightTemp); calculation, * You can also select CUSTOM in material selection document.calculator.value3.value=""; */ If you need to figure out how many tons to buy, multiply your cubic yards by the weight in tons of the material. Stone Weight Calculator * The RESET button will change all the settings back to the start default values. So, on average, a 1000 cm3 piece of gneiss weighs 2750 grams (6.1 pounds). document.calculator.img3.src="https://www.artfiberglass.com/calc/images/notreq.jpg"; Marble * Granite So, when measuring any dimension, ensure you measure the longest distance between the two reference points. For instance, if you are using four inches of crushed stone under a patio area or for a driveway, four inches converted to feet is .33. /*Converting Weight2 to pounds*/ } } var Values=new Array(5); density of granite, solid is equal to 2 691 kg/m. value=value*27.67783; document.calculator.img3.src="https://www.artfiberglass.com/calc/images/notreq.jpg"; On average, a 1 cubic-foot stone would weigh around 165.2 pounds. document.calculator.img3.src="https://www.artfiberglass.com/calc/images/length.jpg"; if((selShape=="0"||selShape=="1")&&(val2=="")){ Record it as the starting volume of the water (V, Check the grading of the container that corresponds with the new water level. With practice, you can create some amazing rock displays using colorful rocks. if(Shape=="2")/*Hexagon Points*/ MatlSelect=document.calculator.material.options[document.calculator.material.selectedIndex].value; document.calculator.img1.src="https://www.artfiberglass.com/calc/images/diameter.jpg"; document.calculator.weight.value=WeightTemp; if(unit=="3") Step one is establishing the volume of gravel needed. Cure the Lava Rocks A very, Read More How Do You Keep Lava Rocks From Exploding? In surface length, enter the length of your surface, e.g., 12 feet. So, on average, a soccer-ball-sized rock will weigh 34.98 pounds. document.calculator.units3.selectedIndex="3"; But it is less demanding. document.calculator.units1.selectedIndex="3"; This river rock calculator will help you find how much river rock you need for your rock bed, no matter its area and depth. WeightTemp=WeightTemp/10000; Around 19 pounds per square foot. for additional helpful calculators. This Ballast is produced daily at Wilson Quarry to meet the American Railway Engineering and Mining Association (AREMA) #4 Ballast Specifications as well as ASTM C-33 Size #4. Please note, these weights are approximate. function gObj(obj) {var theObj;if(document.all){if(typeof obj=="string"){return document.all(obj);}else{return obj.style;}}if(document.getElementById){if(typeof obj=="string"){return document.getElementById(obj);}else{return obj.style;}}return null;}function trimAll(sString){while (sString.substring(0,1) == ' '){sString = sString.substring(1, sString.length);}while (sString.substring(sString.length-1, sString.length) == ' '){sString = sString.substring(0,sString.length-1);} return sString;} function showDebugInfo(){}function r(A){if(A=="10x"||A=="log"||A=="ex"||A=="ln"||A=="sin"||A=="asin"||A=="cos"||A=="acos"||A=="tan"||A=="atan"||A=="e"||A=="pi"||A=="n!"||A=="x2"||A=="1/x"||A=="swap"||A=="x3"||A=="3x"||A=="RND"||A=="M-"||A=="qc"||A=="MC"||A=="MR"||A=="MS"||A=="M+"||A=="sqrt"||A=="pc"){func(A)}else{if(A==1||A==2||A==3||A==4||A==5||A==6||A==7||A==8||A==9||A==0){numInput(A)}else{if(A=="pow"||A=="apow"||A=="+"||A=="-"||A=="*"||A=="/"){opt(A)}else{if(A=="("){popen()}else{if(A==")"){pclose()}else{if(A=="EXP"){exp()}else{if(A==". document.calculator.img3.src="https://www.artfiberglass.com/calc/images/notreq.jpg"; Some of these rocks may already be familiar to you, while some may be new: In our table above, we have also included the densities of these rocks, as we will be using these values to determine the weight of your river rock. Advertisement. A standard brick size has been entered. document.calculator.imgshape.src="https://www.artfiberglass.com/calc/images/hex-af.jpg"; document.calculator.img2.src="https://www.artfiberglass.com/calc/images/width.jpg"; Calculate the density of (a) a piece of rock whose mass is 37.42 g and which, when submerged, increases the water level in a graduated cylinder by 13.9 ml; (b) an rock core . document.calculator.imgshape.src="https://www.artfiberglass.com/calc/images/square.jpg"; #sciout{padding:5px;border-top:1px solid #262626;border-left:1px solid #262626;border-right:2px outset #262626;border-bottom:2px outset #262626;background: #eeeeee;font-family:arial,helvetica,sans-serif;}#sciOutPut{font-size:18px;padding:3px;margin:2px;cursor:text;text-align:right;background-color:#B8C6A3;border:1px solid #87996b;border-radius: 3px;color:#000;}.scifunc{display: inline-block;display: table-cell;vertical-align: middle;text-align:center;width:50px;height:25px;margin:1px;border:1px solid #262626;border-radius: 3px;font-family:arial,helvetica,sans-serif;font-size:16px;font-weight:bold;color:#185290;background-color:#C8D8E8;}.scifunc:active {background-color:#013f7d;color:#ffffff;}.scinm{display: inline-block;display: table-cell;vertical-align: middle;padding: 5px 0px;text-align:center;width:50px;height:30px;margin:1px;border:1px solid #262626;border-radius: 3px;font-family:arial,helvetica,sans-serif;font-size:16px;font-weight:bold;color:#FFF;background-color:#262626;}.scinm:active {background-color:#aaaaaa;color:#000000;}.sciop{display: inline-block;display: table-cell;vertical-align: middle;padding: 5px 0px;text-align:center;width:50px;height:30px;margin:1px;border:1px solid #262626;border-radius: 3px;font-family:arial,helvetica,sans-serif;font-size:16px;font-weight:bold;color:#262626;background-color:#ccc;}.sciop:active {background-color:#000000;color:#ffffff;}.scird{display: inline-block;display: table-cell;vertical-align: middle;text-align:center;height:30px;margin:1px;border:1px solid #eeeeee;border-radius: 3px;font-family:arial,helvetica,sans-serif;font-size:13px;color:#262626;}.scieq{display: inline-block;display: table-cell;vertical-align: middle;padding: 5px 0px;text-align:center;width:50px;height:30px;margin:1px;border:1px solid #262626;border-radius: 3px;font-family:arial,helvetica,sans-serif;font-size:16px;font-weight:bold;color:#F00;background-color:#DCADB0;}.scieq:active {background-color:#ff0000;color:#ffffff;}#calfootnote {font-family:arial,helvetica,sans-serif;font-size:12px;text-align:right;}, See some of our amazing our artists stone sculpture at WWW.MARBLECARVE.COMBelow are just a couple examples, Email us at mail@artfiberglass.com for your order information, Price Email UsNatural Marble Dolphin Statue Sculpture Garden carvingMoreinformationSHIPPING BY SEA, Price Email UsNatural Hand Carved, Solid Marble, 200 CM, 6.56' ft tall Fu Dogs Statue Temple lions Sculpture Garden carvingCustom made to order in 60 days normallyMoreinformation on these StatuesSHIPPING BY SEA, Price Email Us at mail@artfiberglass.com for a quoteGuan Yin Marble Statue Carvings, Kwan Yin Natural Marble Guan Yin Sculpture Garden carvingMoreinformationSHIPPING BY SEA, Marble * Granite return value; if(selShape=="5"){ Multiply 400 x 172.5, and you get 69,000 pounds. document.calculator.units3.selectedIndex="6"; value=value*0.03613; However, the environment needs these stones, too, so we have to know how much river rock we need to purchase to help conserve what we have. One common way to polish rocks is to tumble them in a rock tumbler. Gravel Calculator | How much gravel do you need? WeightTemp2=Math.round(WeightTemp2); if((selShape=="0"||selShape=="2")&&(val2=="")){ Its density range is 3.7 to 4.3 g/cm3. } Email us at mail@artfiberglass.com for your order information. "); So, using the median density to calculate, the weight of 1000 cm3 granite is 2660 grams (5.9 pounds). document.calculator.units3.selectedIndex="3"; if(MatlSelect>"0"){ *****************************************/ Phone: 1 541-359-4708. Estimating is best done by professionals with a clear understanding of the engineering and construction requirements of a particular project. Then with a median density range of 0.95 g/cm3,1000, cm3of pumice weighs 950 grams (2.1 pounds). For example, say you would like to cover a 10 by 10-foot area with 3 inches of pea gravel. document.calculator.img3.src="https://www.artfiberglass.com/calc/images/length.jpg"; Contains the complete Stoneyard Thin Stone Veneer natural stone product line. document.calculator.imgshape.src="https://www.artfiberglass.com/calc/images/hex-points.jpg"; . } This field is for validation purposes and should be left unchanged. value=value*1000; Depending on the type of rock it may weigh between 143.6 and 186.0 pounds. Calculator for weight (tonnage) of sand, gravel or topsoil by height document.calculator.units2.selectedIndex="3"; So, on average, a 1000 cm3 piece of rhyolite weighs 2530 grams (5.58 pounds). } Granite. Unit Weight of Rocks | Rock Stability | GEO5 | Online Help Units[0]=document.calculator.units0.selectedIndex; return value; document.calculator.img1.src="https://www.artfiberglass.com/calc/images/diameter.jpg"; Stone weights are calculated in U.S. lbs per cubic foot (cf) for natural stone. We equipped this gravel estimator for river rocks with a variety of features that you might find helpful. 1320. value=value*100; "){if(value<0||value>200||value!=Math.round(value)){value="NAN"}else{var E=1;var A;for(A=1;A<=value;++A){E*=A}value=E}}else{if(D=="MR"){value=memory}else{if(D=="M+"){memory+=value}else{if(D=="MS"){memory=value}else{if(D=="MC"){memory=0}else{if(D=="M-"){memory-=value}else{if(D=="asin"){if(degreeRadians=="degree"){value=Math.asin(value)*180/Math.PI}else{value=Math.asin(value)}}else{if(D=="acos"){if(degreeRadians=="degree"){value=Math.acos(value)*180/Math.PI}else{value=Math.acos(value)}}else{if(D=="atan"){if(degreeRadians=="degree"){value=Math.atan(value)*180/Math.PI}else{value=Math.atan(value)}}else{if(D=="e^x"){value=Math.exp(value*Math.LN10)}else{if(D=="2^x"){value=Math.exp(value*Math.LN2)}else{if(D=="e^x"){value=Math.exp(value)}else{if(D=="x^2"){value=value*value}else{if(D=="e"){value=Math.E}else{if(D=="ex"){value=Math.pow(Math.E,value)}else{if(D=="10x"){value=Math.pow(10,value)}else{if(D=="x3"){value=value*value*value}else{if(D=="3x"){value=Math.pow(value,1/3)}else{if(D=="x2"){value=value*value}else{if(D=="sin"){if(degreeRadians=="degree"){value=Math.sin(value/180*Math.PI)}else{value=Math.sin(value)}}else{if(D=="cos"){if(degreeRadians=="degree"){var C=(value%360);if(C<0){C=C+360}if(C==90){value=0}else{if(C==270){value=0}else{value=Math.cos(value/180*Math.PI)}}}else{var C=(value*180/Math.PI)%360;if(C<0){C=C+360}if((Math.abs(C-90)<1e-10)||(Math.abs(C-270)<1e-10)){value=0}else{value=Math.cos(value)}}}else{if(D=="tan"){if(degreeRadians=="degree"){value=Math.tan(value/180*Math.PI)}else{value=Math.tan(value)}}else{if(D=="log"){value=Math.log(value)/Math.LN10}else{if(D=="log2"){value=Math.log(value)/Math.LN2}else{if(D=="ln"){value=Math.log(value)}else{if(D=="sqrt"){value=Math.sqrt(value)}else{if(D=="pi"){value=Math.PI}else{if(D=="RND"){value=Math.random()}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}refresh()}; In surface width, enter the width of your surface, e.g., 8 feet. WeightTemp=Weight/1000; * If you know the exact density of a specific document.calculator.img1.src="https://www.artfiberglass.com/calc/images/width.jpg"; 2650. of average weight, modify the default number and select proper var Units=new Array(4); document.calculator.Submit.value="Calculate"; The mass you will calculate will be in pounds. Typically, rounder rocks tend to cost more than irregularly-shaped rocks. "); The Road Materials Calculators help you to estimate the amount of hot mix or road oil / emulsion that you will need for your jobs. document.calculator.weight.value=""; (7 Effective Ways! default unit. return false; Weight=(Values[0] * 0.86602 * Values[1] * Values[1] * Values[2] * Values[4]); )Continue, Adding river rocks to aquariums is both fun and important for many reasons. "); Values[3]=UnitConverter(Values[3],Units[3]); Below, we show you rock weights by type and rock weights by size. back to the start default values. * Stone * Miscellaneous, Important notice: all weight calculation results Rock tumbling and polishing, however, require the use of grit that can be expensive. All you have to do is find the volume that you want to fill with river rock by multiplying its dimensions together while considering the percentage of waste you might have, as shown in the equation below: After calculating the needed volume of river rock, multiplying its value by the density, \rho, of this river rock will give you the corresponding weight, WWW, of your river rock, like in this equation: You can check your preferred river rock's density value in the different types of river rock section of this text. River Rock Calculator if(unit=="3") This value can be higher or lower for individual stones with the same volume. Basalts density falls between 2.7 and 3.3 g/cm3. Use light-colored river rocks for a cooler garden as they tend to reflect more sunlight than the dark-colored ones that absorb heat more. )Continue, Rock tumblers are safe to use. To calculate the weight of the slab, use the following formula: Weight (lbs) = (Length (in) x Width (in) x Thickness (in) x Density (lbs/ft^3)) / 12 For example, if you have a granite slab that is 48 inches long, 36 inches wide, and 1 inch thick, with a density of 170 lbs/ft^3, the weight of the slab would be: Weight (lbs) = (48 x 36 x 1 x 170 . document.calculator.img2.src="https://www.artfiberglass.com/calc/images/length.jpg"; document.calculator.density.value="2.750"; Larger rocks, however, either cannot be moved without heavy machinery or will break a normal household scale. value=value*62.42797; So, the weight of a 1-cubic-foot granite rock is different from the weight of a 1-cubic-foot piece of andesite. Granite rock weight calculator | Math Theorems With a diameter of 8.8 inches, soccer balls have an average volume of around 0.212 cubic feet. For example, let's say you have a granite stone that is 20 cm long, 15 cm wide, and 2 cm thick. } document.calculator.imgunits.src="https://www.artfiberglass.com/calc/images/grams.jpg"; Then with the median density range of 2.9 g/cm3, 1000 cm3 of diorite weighs 2900 grams (6.4 pounds). t1 = jQuery("#l1").val() * jQuery("#w1").val(); The final result will be the weight of the granite stone in kilograms (kg). Wonderful app. This product has been used by the Railroad as Ballast Aggregate since the late 1800's. This type of rock is typically gray in color. "); These rocks are usually round in shape and have smooth textures due to the friction from the water's continuous flow. * Choose a material you wish to obtain weight Finding the tonnage of specific materials such as aggregates is a matter of multiplying its occupied volume by its unit weight. Use this calculator to estimate the weight of granite, basalt, bluestone, limestone, and sandstone. People Stories. Filling a square lot that measures 1 yard on both sides with river rock costs around $4-$7 per inch thickness. document.calculator.density.value=Converted; Check out 31 similar construction materials calculators , Using our tool as a river rock coverage calculator. alert("You must enter a value for each dimension. ), https://rockhoundresource.com/how-much-do-rocks-weigh-pictures-examples-calculations/, https://www.engineeringtoolbox.com/minerals-specific-gravity-d_1644.html, https://gpg.geosci.xyz/content/physical_properties/tables/density_igneous_rocks.html, https://www.thoughtco.com/densities-of-common-rocks-and-minerals-1439119, https://volcanoes.usgs.gov/volcanic_ash/density_hardness.html, https://sciencing.com/calculate-volume-stone-7805263.html, https://www.hunker.com/13425320/how-to-calculate-weight-of-a-rock, https://www.britannica.com/science/basalt, Are Crystal Rocks Worth Money? So, instead of dangling between 2.4 and 2.8 g/cm3, use 2.6 g/cm3. Your landscape rock coverage calculator would look like this: Circular areas require a bit more calculation. } if(unit=="1") } Density=document.calculator.material.options[document.calculator.material.selectedIndex].value; The wrong type of rock can act as a detriment to both your aquarium fish and water quality. document.calculator.imgunits.src="https://www.artfiberglass.com/calc/images/kilo.jpg"; "); document.calculator.imgshape.src="https://www.artfiberglass.com/calc/images/round.jpg"; document.calculator.units3.selectedIndex="6"; Gravel, along with other types of rock fragments such as sand and . } The density of bauxite ranges from 2.4 to 2.6 g/cm3. hit ENTER key or click on CALCULATE button. Values[0]=document.calculator.material.options[document.calculator.material.selectedIndex].value; Tonnage Calculator
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