CONSTRUCTION PLANNING EQUIPMENT AND METHODS 8TH EDITION EBOOK
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EBOOK: Construction, planning, equipment and methods. 8th edition He received his Ph.D. in civil engineering (construction engineering. DOWNLOAD PDF . Construction Planning, Equipment, and Methods Seventh Edition Robert. L. Peurifoy, P.E. Late Consulting Engineer This horizontal line intersects eighth gear, and the corresponding speed is 31 mph. - b. If the job is at . Ebook download any format Construction Planning, Equipment, and Eighth Edition ofConstruction Planning, Equipment and Methods follows.
Robert L. He received his Ph. Contents Chapter 1: Machines Make it Possible Chapter 2: Equipment Economics Chapter 3: Planning for Earthwork Construction Chapter 4: Soil and Rock Chapter 5: Compaction and Stabilization Equipment Chapter 6: Mobile Equipment Power Requirements Chapter 7: Dozers Chapter 8: Scrapers Chapter 9: Excavators Chapter Trucks and Hauling Equipment Chapter Finishing Equipment Chapter Drilling Rock and Earth Chapter Blasting Rock Chapter Aggregate Production Chapter Asphalt Mix Production and Placement Chapter Concrete and Concrete Equipment Chapter Cranes Chapter Piles and Pile-Driving Equipment Chapter Air Compressors and Pumps Chapter Nylon cord tires.
The utilization of nylon cord material in tire structures made larger tires with increased load capacity and heat resistance a practical reality. This allowed tires to run cooler and achieve better traction, and improved machine productivity.
High-output diesel engines. Manufacturers developed new ways to coax greater horsepower from a cubic inch of engine displacement. Today there does not appear to be any radically new equipment on the hoozon. Amplification of human energy: shift of energy requirements from the man to the machine.
The Future A time may come when the base machine is considered only a mobile countenveight with a hydraulic power plant. The base machine will perform a variety of tasks through multiple attachments. Wheel loaders have seen the mtroduction of the tool-carrier concept. Wheel loaders are no longer standard bucket machines.
There are now other attachments such as brooms, forks, and stingers available so that a loader can perform a multitude of tasks. Other attachments will be developed, offering the contractor more versatility from a base investment. Ultimately, operators sitting in a machine cab may be eliminated altogether. Related to workforce quality is the proliferation of supporting machine control technologies.
Navigation of equipment is a broad topic, covering a large spectrum of different technologies and applications. This technology is rapidly being transferred to construction applications. The U. Reduced preconstruction and restaking time by 28 hrs. Achieved an accuracy of 2. The laser and the global positioning system GPS guidance will become more common and reduce the need for surveyors. All the grader or dozer operator will need to do is load the digital terrain model into the onboard computer and then guide the machine where the display indicates.
Machine position, along with cut or fill information, will be on a screen in front of the operator at all times.
This may tum the operator's job into 'I. Caterpillar is developing and testing automated rock-hauling units for mining.
These units are linked by radio to the office and tracked by GPS. The superintendent need only use a laptop to send the start signal and the trucks do the rest. They leave the lineup at set intervals and follow the prescribed course. The superintendent can track the progress of each machine on the computer. If a truck develops a problem; the situation is signaled to the superintendent for corrective action.
GPS A highly precise satellite-based navigation system. After spreading, a roller compacts the material to the required density. Therefore, a group of machines, in this example an excavator, haul trucks, a dozer, and a roller, constitute what is commonly referred to as an equipment spread.
Optimization in the management of an equipment spread is critical for a contractor, both in achieving a competitive pricing position and in accumulating the corporate operating capital required to finance the expansion of project performance capability.
This book describes the basic operational characteristics of the major heavy construction equipment types. There are no unique solutions to the problem of selecting a machine to work on a particular construction project. All machine selection problems are influenced by external environmental conditions.
To appreciate how environmental conditions influence the utilization of heavy construction equipment, one must understand the mechanics of how the construction industry operates. It enables one to analyze operational problems and to arrive at practical solutions for completing construction tasks. It is about the application of engineering fundamentals and analysis to construction activities, and the economic comparison of machine choices.
The construction contractor's ability to win contracts and to perform them at a profit is determined by two vital assets: people and equipment. To be economically competitive, a contractor's equipment must be competitive, both mechanically and technologically.
Construction Planning, Equipment, and Methods
Old machines, which require costly repairs, cannot compete successfully with new equipment having lower repair costs and higher production rates. In most cases, a piece of equipment does not work as a stand-alone unit. Pieces of equipment work in groups.
An excavator loads trucks that haul material to a location on the project where it is required. At that point, the material By the nature of the product, the construction contractor works under a unique set of production conditions that directly affect equipment. Whereas most manufacturing companies have a permanentJactory where raw materials flow in and finished products flow out in a repetitive, assembly-line process, a construction company carries its factory with it from job to job.
At each new site, the company proceeds to set up and produce a one-of-a-kind project. If the construction work goes as planned, the job will be completed on time and with a profit.
13 editions of this work
Equipment-intensive projects present great financial risk. Many projects involving earthwork are bid on a unit-price basis and there can be large variations between estimated and actual quantities. Some projects require an equipment commitment that is greater than the amount that a contractor will be paid for completing the work.
Such a situation forces a contractor into a continuing sequence of jobs to support the long-term equipment payments. Additional risk factors facing contractors in equipment-intensive work include financing structure, construction activity levels the amount of work being put out for bid , labor legislation and agreements, and safety regulations.
Project size and outdoor work that is weather dependent contribute to long project durations. Projects requiring two or more years to complete are not uncommon in the industry. In each of these areas, many regulations impact on a contractor's operations. These actions can directly influence equipment decisions. Legislative acts that exert direct pressure on equipment questions include the Davis-Bacon Act, which is concerned with wage rates, and the Occupational Safety and Health Act OSHA , which specifies workplace safety requirements.
Over one-half of the dollar volume of work in the equipment-intensive fields of construction is 9 C hap t e r 1 Machines Make It Possible 10 Construction Planning, Equipment, and Methods subject to wage determinations under the Davis-Bacon Act, and this strongly influences the labor costs incurred by contractors.
OSHA, by its rollover protective structures ROPS mandate, substantially increased the cost of those pieces of construction equipment that had to have these structures included as part of the basic machine. That particular regulation had a single-point-in-time effect on equipment decisions, much like that resulting from the introduction of new equipment technology.
Similarly, there remains the possibility of additional safety requirements.
Construction Planning, Equipment, and Methods (Mcgraw-Hill Series in Civil Engineering)
Sound and emissions are issues that are receiving greater regulatory attention. Some owners, by clauses in the construction contract, are limiting machine noise levels. Of all major industry classifications, construction has one of the poorest safety records. The construction industry employs nearly 6. That translates into 1, to 2, deaths and , disabling injuries annually. The major causes of deaths and injuries are falls from elevations, electrocution, being struck by equipment, being caught in between equipment, and trench excavation cave-ins.
Construction Planning Equipment and Methods
As an industry, we are responsible and accountable for those statistics. It is the responsibility of construction managers to create the safety programs that will prevent those accidents.
We have both a moral and a business interest in doing so. The key is to provide the leadership, the programs, and the incentives to create a safe industry.
In the late s, Congress began an investigation of construction safety, and in enacted the Williams-Steiger Act, more commonly referred to the Occupational Safety and Health Act.
The act provided a comprehensive set of safety rules and regulations, inspection procedures, and safety recordkeeping requirements.To support the road"building effort, scrapers increased in capacity from 10 to 30 cubic yards cy. Manufacturers developed new ways to coax greater horsepower from a cubic inch of engine displacement.
Sound and emissions are issues that are receiving greater regulatory attention.
The Future A time may come when the base machine is considered only a mobile countenveight with a hydraulic power plant. Finishing Equipment Chapter High-strength steels. He joined with Dr. A self-taught mechanic named.
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