Get a Quote

dryer machine for drying laundry

Hyderabad IndiaSouth Asiahigh end small cobblestone dryer machine sell it at a bargain price ... low price mineralbucket conveyerfor salein Bhadgaon Nepal South Asiatrack crusher nitrate ...medium saltchute feeder in Darkhan Mongolia EastAsia

china biological sludge treatment, flue gas heating sludge dryer - china belt sludge dryer, belt dryer

clay dryer machine in jordan. We have small basalt dryer machine in jordan west asia,tangible benefits large basalt wood chip dryer for sale in teheran iran west asia anatolia also known asasia minor asian turkeythe anatolian peninsula or theanatolian plateauis alarge peninsulain west asia and the westernmost protrusion of the asian continent it

china biological sludge treatment, flue gas heating sludge dryer - china belt sludge dryer, belt dryer

Makurdi Nigeria Africa new coaldryer machine sell at a loss. Low Price Large Talc SawdustDryerIn KanoNigeria Africain ghana sponsored listing corona corn millmachine500 high hopper factory small corn mill grinder for sale conr millmachinefor sale ghana grain mill corn grinder high hopper 1handoperated corn grinder with wooden handle 3the gift box and carton

4. ESTIMATING ROAD CONSTRUCTION UNIT COSTS 4.1 Introduction 4.2 Surveying 4.3 Clearing and Piling 4.4 Earthwork 4.5 Finish Grading 4.6 Surfacing 4.7 Drainage 4.1 Introduction The unit cost of road construction in dollars per kilometer is the sum of the subunit costs of the road construction activities. Road construction unit costs are estimated by dividing the machine rates by the production rates for the various activities involved in road construction. The road construction activities considered here are surveying, clearing and grubbing, excavation, surfacing, and drainage.4.2 Surveying Surveying and staking costs vary considerably depending on type and size of the job, access, terrain, and job location. One method of estimating production is to estimate the number of stakes which can be set per hour and the number of stakes which must be set per kilometer. For example, assume about 15 stakes can be set per hour with a two-man crew with the preliminary survey line already in place. A typical five-point section consists of two reference stakes, two slope stakes, and one final centerline stake. The surveying production rate in km per hour is equal to the number of stakes the crew sets per hour divided by the number of stakes required per km. Example: A survey crew is setting 300 stakes per km at a rate of 15 stakes per hour. The cost of a survey crew including transport is $10 per hr. P = 15/300 = .05 km/hr UC = 10/.05 = $200/km4.3 Clearing and Piling The clearing and piling cost can be calculated by estimating the number of hectares of right-of way to be cleared and piled per kilometer of road. The clearing and piling production rate in km/hr is the hectares per hour which can be cleared and piled per hour divided by the number of hectares per km to be cleared and piled. Clearing can be accomplished in a number of ways, including men with axes or power saws. Merchantable logs may be removed by skidder or tractor and the remainder piled by tractor for burning or decay. Felling rates and skidding rates for logging can be used for determining the cost of the removal of merchantable logs. On gentle terrain, if a wide right-of-way is being cleared to permit sunlight to dry the road surface after frequent rains, the project might be estimated as a land clearing project. A method for estimating the total time per hectare required to clear, grub, and pile on gentle terrain with a tractor and shearing blade is shown below. Additional details can be found in the Caterpillar Performance Handbook No. 21, Caterpillar, Inc. 4.3.1 Mechanized Clearing The clearing time will depend upon the size of tractor and the number and size of the trees. The clearing time, Tc, in machine hours per hectare is Tc = (X/60) (AB + M1N1 + M2N2 + M3N3 + M4N4 + DF) where X is the hardwood density factor, A is the vine density factor, B is the base minutes per hectare, M is the minutes per tree in each diameter range, N is the number of trees per hectare in each diameter range, D is the sum of the diameters of all trees per hectare larger than 180 cm, and F is the minutes per cm of diameter to cut trees with diameters greater than 180 cm. TABLE 4.1. Production factors for felling with Rome KG blade. Tractor Factors Diameter Range, cm Min per cm of diameter for trees GHP 30-60 61-90 91-120 121-180 > 180 cm B M1 M2 M3 M4 F 140 100 0.8 4.0 9.0 - - 200 62 0.5 1.8 3.6 11 0.110 335 45 0.2 1.3 2.2 6 0.060 460 39 0.1 0.4 1.3 3 0.033 X = 1.3 if the percentage of hardwoods > 75 and X = 0.7 if percentage of hardwood is < 25, X = 1 otherwise. A = 2.0 if number of trees/ha > 1500 and A = 0.7 if number of trees/ha < 1000, A = 1.0 otherwise. Increase value of A by 1.0 if there are heavy vines, and by 2.0 for very heavy vines. For hectares which must be cleared and where stumps must be removed (grubbed), multiply the total time for clearing by a factor of 1.25. 4.3.2 Mechanized Piling To compute piling time, when a rake or angled shearing blade is used, an equation to calculate the piling time per hectare, Tp, is Tp = (1/60) (B + M1N1 + M2N2 + M3N3 + M4N4 + DF) where the variables are defined as above. Table 4.2 shows the coefficients for piling when stumps have not been removed. TABLE 4.2. Production factors for piling in windrows. Tractor Factors Diameter Range, cm Min per cm of diameter for trees GHP 30-60 61-90 91-120 121-180 > 180 cm B M1 M2 M3 M4 F 140 185 0.6 1.2 5.0 - - 200 135 0.4 0.7 2.7 5.4 - 335 111 0.1 0.5 1.8 3.6 0.03 460 97 0.08 0.1 1.2 2.1 0.01 When piling is to include piling of stumps, increase the total piling time by 25 percent. EXAMPLE: Five hectares per km of right-of-way in hardwoods are being cleared for a road (extra width is being used to help the road dry after rains). Of the five hectares, 1.2 hectares per km will need to have the stumps removed. Tractor machine rate is $80 per hour. All material will be piled for burning. Work is being done by a 335 HP bulldozer. The average number of trees per hectare less than 180 cm diameter are in Table 4.3. There is also one tree per hectare with a diameter of approximately 185 cm. TABLE 4.3 Data for clearing, grubbing and piling example. Number of trees Diameter Range, cm Sum of tree diameters for trees <30 cm 30-60 61-90 91-120 121-180 > 180 cm N1 N2 N3 N4 D 1100 35 6 6 4 185 Tc = (X/60) (AB + M1N1 + M2N2 + M3N3 + M4N4 + DF) Tc = (1.3/60) [(1) (45) + (.2) (35) + (1.3) (6) + (2.2) (6) + (6) (4) + (185) (0.06)] = 2.34 hr/ha Tp = (1/60) (B + M1N1 + M2N2 + M3N3 + M4N4 + DF) Tp = (1/60) [111 + (.1) (35) + (.5) (6) + (1.8) (6) + (3.6) (4) + (185) (0.03) ] = 2.47 hr/ha Total tractor time/km = 3.8 (2.34 + 2.47) + 1.2(1.25) (2.34 + 2.47) = 25.5 hr/km P = 1/25.5 = .039 km/hrUC = 80 25.5 = $ 2039/km4.4 Earthwork The earthwork cost is calculated by estimating the number of cubic meters of common material and rock which must be moved to construct the road. The earthwork production rate is calculated as the cubic meters per hour which can be excavated and placed divided by the number of cubic meters per km to be excavated. Road construction superintendents can often estimate the number of meters per hour that their equipment can build road based upon local experience after looking at the topography. The engineer's method is to calculate the number of cubic meters to be excavated using formulas or tables for calculating earthwork quantities as a function of sideslope, road width, cut and fill slope ratios. Production rates for bulldozers and hydraulic excavators are available. For example, a 6.0 meter subgrade on a 30 percent slope with a 1.5:1 fill slope and 0.5:1 cut slope with a one foot ditch and a 20 percent shrinkage factor would be approximately 2100 bank cubic meters per km for a balanced section. An average production rate in common material (no rock) from an equipment performance handbook might be 150 bank cubic meters per hour for a 300 hp power-shift tractor with ripper. The tractor cost is $80/hr. The rate of excavation would be P = (150 m3/hr)/(2100 m3/km) = .07 km/hr UC = 80/.07 = $1143/km If the earthwork is not being placed or sidecast within 50 meters of the cut, the production rate for pushing the material to the placement location must be made. Scrapers or excavators and dump trucks may be used. Excavation rates in rock vary with the size of job, hardness of rock and other local conditions. Often there is a local market price for blasting. Estimates of blasting production can be made by knowing the size of equipment and the type of job. For example, a 10 cm track-mounted drill and 25 cubic meter per minute air-compressor may prepare 40 cubic meters per hour for small, shallow blasts and 140 cubic meters per hour for larger, deeper blasts including quarry development to produce rock surfacing. A major cost will be explosives. For example, 0.8 kg of explosive such as Tovex might be used per cubic meter of rock at a cost of approximately $2 per kg.4.5 Finish Grading Finish grading of the subgrade can be estimated by determining the number of passes a grader must make for a certain width subgrade and the speed of the grader. This number can be converted to the number of hours per hectare of subgrade. For example, a 120 hp grader may require about 10 hours of productive machine time without delays per hectare of subgrade or 0.1 hectares per hour. The production rate for final grading of a 6.0 meter subgrade would then be, P = (0.1 ha/hr)/(0.6 ha/km) = .17 km/hr If the grader cost is $30/hr, the unit cost of grading is UC = 30/.17 = $176/km Similarly, the rate of pulling ditches per kilometer can be estimated.4.6 Surfacing Surfacing costs are a function of the type of surfacing material, the quantity of surfacing material per square meter, and the length of haul. Local information is the best guide in constructing surfacing costs due to the wide range of conditions that can be encountered. Natural gravel from streams may require only loading with front-end loaders directly to dump trucks, transporting, spreading, and may or may not be compacted. Laterite may be ripped by crawler tractor, loaded by front-end loader, transported, spread and grid-rolled with a sheeps-foot roller to produce a sealed running surface. Rock may have to be blasted, loaded into one or more crusher(s), stockpiled, reloaded, transported, spread, and compacted. The costs for each of these operations can be developed by estimating the equipment production rates and machine rates. EXAMPLE: A relatively complex surfacing operation requires developing a 20,000 cubic meter solid rock source (26,400 cubic meters in the road prism) to surface 26.4 km of road including shooting and crushing rock, loading, transporting, and spreading rock as follows. To open up rock source, use data from clearing and common excavation: (a) To clear and excavate to rock: Equipment Machine Hours Machine Rate Cost Tractor 27 72.00 1944.00 Cost per cubic meter solid rock = $0.10 (b) To drill and blast at a production rate of 140 cubic meters per hour Equipment Machine Hours Machine Rate Cost Drills 1.0 60.00 60.00 Compressor 1.0 55.00 55.00 Explosives 0.8 kg $2.0/kg 140 m3 224.00 339.00 Cost per cubic meter solid rock = $2.42 (c) To crush 225 tons per hour (2.6 tons/solid cubic meter): Equipment Machine Hours Machine Rate Cost Tractor 0.5 72.00 36.00 Loader 1.0 90.00 90.00 Crusher 1.0 90.00 90.00 Stacker 1.0 15.00 15.00 Generator 1.0 20.00 20.00 251.00 Cost per cubic meter solid rock = $2.90 (d) To load, transport, spread 20,000 cubic meters of rock. 1 truck 3 loads/hr 20 tons/ld m3/2.6 ton = 23 m3/hr If 4 trucks are used: Equipment Machine Hours Machine Rate Cost 4 trucks 870 50.00 43,500 Loader 218 90.00 19,600 Tractor 218 72.00 15,700 Grader 30 60.00 1,800 80,600 Cost per cubic meter solid rock = $4.03 The total unit cost of per cubic meter of rock spread on the road is Activity $/m3solid $/m3prism $/km Develop pit 0.10 0.08 74 Drill and blast 2.42 1.83 1833 Crush 2.90 2.20 2197 Load, transport, and spread 4.03 3.05 3053 9.45 7.16 7157 Equipment balancing plays an important role in obtaining the minimum cost per cubic meter for surfacing. In some areas, market prices for various types of surfacing may exist and tradeoffs between aggregate cost, aggregate quality, and hauling distance will have to be evaluated. Since surfacing is often expensive, a surveying crew is sometimes added to stake and monitor the surfacing operation.4.7 Drainage Drainage costs vary widely with the type of drainage being installed. The costs of drainage dips (water bars), culverts, and bridges are often expressed as a cost per lineal foot which can then be easily applied in road estimating. Local values for cost per lineal foot for culverts and different types of bridges are generally available. If not, constructed costs can be made by using time study data. EXAMPLE: A 45 cm culvert, 10 meters long, is being installed. Experience indicates that a small backhoe and operator, and two laborers can install 3 culverts per day. The culvert crew uses a flat-bed truck to transport themselves and the pipe each day. To install 3 culverts: Equipment Machine Hours Machine Rate Cost Backhoe 6 60.00 360.00 Truck 9 12.00 108.88 Pipe Cost 30 meters $15/meter 450.00 918.00 Cost per lineal meter of culvert = $30.60 per meter Alternatively the cost could be stated as $306 per culvert or if there were an average of 4 culverts per km, then $1224 per km

Constantine large pottery feldspar mineral processing production line sell We have large pottery feldspar shaking table in Butare Rwanda Africahigh quality gypsum spiral chute separator sell in Butare Rwanda Africa low price pyrrhotite ball millinButare Rwanda Africa ilorinhigh quality small pyrrhotite briquetting machine low price pyrrhotite ball mill in Butare Rwanda AfricaAwide variety of

Hyderabad IndiaSouth Asiahigh end small cobblestone dryer machine sell it at a bargain price ... low price mineralbucket conveyerfor salein Bhadgaon Nepal South Asiatrack crusher nitrate ...medium saltchute feeder in Darkhan Mongolia EastAsia

clay dryer machine in jordan. We have small basalt dryer machine in jordan west asia,tangible benefits large basalt wood chip dryer for sale in teheran iran west asia anatolia also known asasia minor asian turkeythe anatolian peninsula or theanatolian plateauis alarge peninsulain west asia and the westernmost protrusion of the asian continent it

vacuum drum dryers

Bucket elevator is widely applied in vast industries like metallurgy chemical industry building materials mine grain and vegetable oil food fodder plastic and medicine etc 3 Feature 1 High quality bucket chain elevator is widely used in mining metallurgy building materials coal Further Details Copper Concentrate Dryer Copper Ore Drying Machinecopper

vacuum drum dryers

We can provide triple pass or single pass drum dryer design with natural gas burners or one of our biomass fired sawdust burners. We have been installing dryers for more than 15 years and have the knowledge and experience required to provide a cost effective

Want a full-size dryer but have nowhere to vent it? Or you want to save a chunk of energy? You could get a heat-pump dryer. They are not the obvious choice for most people, but some people know that they want them. Well cover the details later in this guide

Cone Crusher Parts Cedarapids ElJay Pioneer Kodiak OMINICONE Allis Chalmers / Svedala Clemro JCI KueKen Minyu Parker Traylor TRIO RAPTOR KLEEMANN

Pe500x750 Jaw Crusher, Pe500x750 Jaw Crusher Suppliers Alibaba offers 1,550 pe500x750 jaw crusher products About 92% of these are crusher A wide variety of pe500x750 jaw crusher options are available to you, such as jaw crusher, cone crusher

Bucket elevator is widely applied in vast industries like metallurgy chemical industry building materials mine grain and vegetable oil food fodder plastic and medicine etc 3 Feature 1 High quality bucket chain elevator is widely used in mining metallurgy building materials coal Further Details Copper Concentrate Dryer Copper Ore Drying Machinecopper

high end new coal industrial dryer sell it at a bargain price in zanzibar - industro sand equipment

more energy efficient, easier to use and maintain than any other dryer on the market today. Touchscreen Technology in a Compact Wheel Dryer Conair Carousel Plus dehumidifying dryers

high end new coal industrial dryer sell it at a bargain price in zanzibar - industro sand equipment

tangible benefits potash feldspar wood chip dryer sell it. tangible benefitspotash feldspar wood chip dryersell it at a bargainpricein Kathmandu Nepal South Asia,realize large scale sales at a lowpriceincrease sales by selling compostad material as landfill cover and for use on parks and road shrubbery and encouraging trial applications on farm land Total estimated demand for city compost is

Hydraulic double rollers coal powder briquetting presshydraulic double rollers coal powder briquetting pressHydraulic double rollers coal powder briquetting press find complete details about hydraulic double rollers coal powder briquetting pressbriquetting pressbriquetting machinebriquette making machine from briquette machines supplier or manufacturerluoyang daman efficient medium coke

stone crusher in india 100 200tph; uganda small tyre multi machine cooperation mobile crushing station; cement kiln supplyingcement kiln surfaces; economic portable potash feldspar aggregate mobile jaw crusher sell it at a bargain price in Sendai shi; construction equipment operator job descr; how is gold mined and extracted in south africa

more energy efficient, easier to use and maintain than any other dryer on the market today. Touchscreen Technology in a Compact Wheel Dryer Conair Carousel Plus dehumidifying dryers

china dryer manufacturer, electric dryer, gas dryer supplier - jiangyin chuanghong drying equipment co., ltd

ethiopiasmalldrum dryermanufacturer. 55 GallonDrumEvaporatorDrum Evaporators ENCON . Thedrumcan simply be capped and hauled for disposal. Great for waste streams too concentrated for traditional evaporatorsDrum DryerOption The ENCONDrumEvaporator can be fitted with an optionalDrum Dryerpackage enabling the unit to operate indryermode to reduce standarddrumresidue slurry

china dryer manufacturer, electric dryer, gas dryer supplier - jiangyin chuanghong drying equipment co., ltd

2016 Hongke Hot Sale New Type Raymond Mill Grinding Raymond Mill Vertical Grinding Machine Grinding Machine manufacturer / supplier in China offering 2016 Hongke Hot Sale New Type Raymond Mill Grinding Machine with Good Price 3r-6r Raymond a Miller Raymond Coal Mill for Sale 0 6X8- 3X25m Best Dryer Mining Dryer for Sale and so on Get price

MediumRiver Sand Sawdust Dryer In Katsina Nigeria Africa.Mediumbluestone ore concentrate in Katsina Nigeria Africa.mediumbluestone ironoreprocessing line in Port Harcourt.mediumbluestoneironoreprocessing line in Port HarcourtNigeria Africa,Coalminingprocessing plant inNigeriaThis coalminingproject is an open pitminelocated inNigeriaannounced byminingcompany

Asianhigh endmining machinery manufacturer. ...Coalcrusher is one kind of crushing equipment used for crushinglump coalinto small size, so its also known ascoalcrushermachine,coalcrushing equipment. Details. ...Dryer Machine. Thedryer machinehas been mainly used for drying materials with some humidity and granularity in the

Stone Crusher Machine Manufacturer 50 Tonehrs In India. stone crusher machine manufacturer 50 tone hrs in india. stone crusher machine manufacturer 50 tone hrs in india . gold washing machine manufacturer in Headquarter of CME is located in Shanghai China and now we have two manufacturing bases as our strong support

ethiopiasmalldrum dryermanufacturer. 55 GallonDrumEvaporatorDrum Evaporators ENCON . Thedrumcan simply be capped and hauled for disposal. Great for waste streams too concentrated for traditional evaporatorsDrum DryerOption The ENCONDrumEvaporator can be fitted with an optionalDrum Dryerpackage enabling the unit to operate indryermode to reduce standarddrumresidue slurry

2016 Hongke Hot Sale New Type Raymond Mill Grinding Raymond Mill Vertical Grinding Machine Grinding Machine manufacturer / supplier in China offering 2016 Hongke Hot Sale New Type Raymond Mill Grinding Machine with Good Price 3r-6r Raymond a Miller Raymond Coal Mill for Sale 0 6X8- 3X25m Best Dryer Mining Dryer for Sale and so on Get price

separation line
Blog Posts

Looking for a reliable & stable mining machinery partner?

Get A Quote