rock excavation production rates

  • Rock Mass Properties and Hard Rock TBM Penetration Rate

    Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel #3, Stage 2: p. 10191036 in Robinson, R.A. and Marquardt, J.M., eds., Rapid Excavation and Tunneling Conference, 2003 Proceedings, 1334 p. Rock Mass Properties and Hard Rock TBM Penetration Rate Investigations, Queens Tunnel Complex, NYC Water Tunnel #3, Stage 2 ABSTRACT

  • Typical Contract Language in Specifiions of a Public

    For trench excavation, a 235C excavator with a medium stick and a rock ripping bucket, or equivalent equipment, is considered conventional equipment, if it can excavate at a production rate of at least 30 bank cubic yards per hour.

  • Hand Excavation Unit Costs for Goldenseal Construction

    Construction unit cost for a foundation hole dug out by hand in awkward conditions (under a crawl space or in other crowded or tight conditions). Unit Size . One cubic yard of soil removed. Labor and Equipment Costs. We figure about 3 hours per cubic yard of soil removed.

  • Transverse Hydraulic Drumcutter Attachments Antraquip

    Antraquip transverse style drum cutters offer an ideal alternative to hydraulic hammers and traditional excavation methods providing exceptional production rates for a variety of appliions including trenching, mining, scaling, demolition, tunneling, soil remediation, underwater operations, foundation excavation

  • ROADHEADERS PERFORMANCE OPTIMIZATION Inside

    cutters in contact with the rock, as well as the excessively higher bit costs and low production rates that are encountered in excavation of hard and/or abrasive rock formations. However, roadheaders are commonly used in soft to moderately hard and non to moderately abrasive rocks.

  • Epiroc USA Mining Equipment Epiroc

    Epiroc is a leading productivity partner for the mining, infrastructure and natural resources industries. With cuttingedge technology, Epiroc develops and produces innovative drill rigs, rock excavation and construction equipment, and provides worldclass service and consumables.

  • Estimating Excavation Revised Craftsman Book Company

    as scrapers, hoes and loaders at their designed production rate. Special quantities include anything that requires special care or lower production rates. Examples are most rock excavation, nearly all hand excavation, and backhoe work around sewer lines, underground utilities, or

  • Rock Excavation and Its Various Methods Eagle Rock

    Rock Excavation and Its Various Methods. When it comes to rock excavating, blasting, ripping and breaking have been popular methods to excavate rock and has been a part of construction engineering for X number of years. In any blasting situation, the geologic structure of the rock mass will be the most important consideration.

  • 6.1. GENERAL

    Hardrock TBMs can be used in relatively soft to hard rock conditions, and best when rock fracturing & weakness zones are predictable. The TBM is most economical method for longer tunnel lengths, in which its high investment cost and timely buildup can be utilized by the high advance rate of excavation.

  • hoe ramming rock excavation price per cubic meter

    May 12, 2013 · rock excavation cost blasting versus hydraulic hammer per cubic Cost per cubic meter solid rock = {1} rock excavation, rock A large hoeram will often cost contract that rock excavation would be charged at $1500 per 4. ESTIMATING ROAD CONSTRUCTION UNIT COSTS. Excavation rates in rock vary with the size of job,

  • Trenching R.B. Hinkle Construction

    Rock Trencher excavation is faster than the hoe ram back hoe combination and can cut through harder material. PLH Group Company. PLH Group is a leading full service construction and specialty contractor that serves the electric power line, pipeline, oilfield electrical services and industrial markets.

  • Rock Excavation and Its Various Methods Eagle Rock

    Rock Excavation and Its Various Methods. When it comes to rock excavating, blasting, ripping and breaking have been popular methods to excavate rock and has been a part of construction engineering for X number of years. In any blasting situation, the geologic structure of the rock mass will be the most important consideration.

  • Hand Excavation Productivity Excavation & Site Work

    Dec 07, 2011 · Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death.ContractorTalk DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

  • Guidelines for Hard Material, Rock Excavation ( Nota

    Guidelines for Hard Material, Rock Excavation ( Nota Teknik Jalan 2405 ) Download as PDF File (.pdf), Text File (.txt) or read online.

  • Performance characteristics of tunnel boring machine in

    Tuff breccia was a suitable medium for the tunneling by TBM due to its impermeability, stability and high penetration rate, but excavation in tuff with TBM was not very much favorable because it led to cutter jam problem and affected the production cycle due to sticky property of muck, thus taking longer discharge time at every transfer point

  • Hand Excavation Unit Costs for Goldenseal Construction

    Construction unit cost for a foundation hole dug out by hand in awkward conditions (under a crawl space or in other crowded or tight conditions). Unit Size . One cubic yard of soil removed. Labor and Equipment Costs. We figure about 3 hours per cubic yard of soil removed.

  • How to calculate productivity of construction equipment

    How to calculate productivity of construction equipment like excavator, dozer, rock breaker, riper.. Answer / vinod k I think 75% efficiency is correct as excavation of soil itself takes time & depends upon the area where excavation is to be done, if the excavation area is mix of soil & rocks then efficiency will be less & No. of cycles/hr will

  • Performance Handbook NHERI

    includes both production and costs. Factors bearing directly on productivity include such things as weight to horsepower ratio, capacity, type of transmission, speeds and operating costs. The Performance Handbook considers these factors in detail. There are other less direct machine performance factors for which no tables, charts or graphs

  • Excavation Cost Estimating Example University of Michigan

    Excavation Cost Estimating Example Author: Photios G. Ioannou Subject: CEE 431 Construction Contracting Created Date: 10/28/1999 10:32:08 PM

  • Unit Price Averages Reports Alberta

    Unit Price Averages Reports The information provided in this File is only for the use of Alberta Infrastructure & Transportation staff and its Consultants for the development of construction cost estimates on Department construction projects. These unit price averages (UPA) are provided for information only and, while thought to be accurate, are

  • Estimating Excavation Revised Craftsman Book Company

    as scrapers, hoes and loaders at their designed production rate. Special quantities include anything that requires special care or lower production rates. Examples are most rock excavation, nearly all hand excavation, and backhoe work around sewer lines, underground utilities, or

  • Productivity Guide: Excavators 45 to 50 metric tons

    Jun 12, 2007 · The usefulness and profitability of an excavator directly corresponds to a correct sizing of the machine to the jobs it is expected to perform. Underestimating this particular bit of alchemy

  • Estimate the hourly production and unit cost of rock

    Estimate the hourly production and unit cost of rock excavation by drilling and blasting. The rock is a limestone having a seismic velocity of 6000 ft/s (1830 m/s). Trial blasting indies that 3½in. (8.9cm) holes drilled in an 8ft (2.44m) rectangular pattern will provide the desired fracturing.

  • BXR Series Production Rates rockbreaker

    When breaking oversize material the hydraulic breaker is expected to break the material down quickly into multiple pieces. This is optimum production. If the operator has to reposition the breaker towards the edge of the rock and gradually downsize the material, production rate slows down.