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Civ420-Construction Engineering M1: Equipment Management

The Module in a Nutshell. Equipment operations and managementSafetyUtilizationTechnology Equipment productivitySite Conditions Operator Site Layout Maintenance Equipment costsOperation costs Acquisition costs (ownership vs. rental)Simulation . Module 1: Simulation . . The Concept of S

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Civ420-Construction Engineering M1: Equipment Management

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    1. Civ420-Construction Engineering M1: Equipment Management Tamer El-Diraby University of Toronto

    2. The Module in a Nutshell Equipment operations and management Safety Utilization Technology Equipment productivity Site Conditions Operator Site Layout Maintenance Equipment costs Operation costs Acquisition costs (ownership vs. rental) Simulation

    3. Module 1: Simulation

    4. The Concept of Simulation

    5. CYCLONE The most well-developed and used simulation system/software in construction Stands for: CYClic Operations NEtwork) simulation methodology, Developed by Prof. Daniel W. Halpin (one of the greats of construction management academics) EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    6. CYCLONE: the approach Study the flow of “repeated” tasks. Identify the “cyclical” resources In some cases, these resources “queue” or wait “idle” in line if the task is not ready for it. In other cases, resources flow “normally” without restrictions. EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    7. CYCLONE: The elements Normal: an activity/task with duration where the resource flow without restrictions. Queue: a wait line where resources wait to start a task. COMBI: an activity/task with duration where the resource flow with restrictions. The basic rule: a Queue has to be followed by a COMBI and a Normal cannot be proceeded by a Queue EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    8. CYCLONE Consider a mason laborer problem in which the laborer stockpiles the brick pallets on the scaffold. In this system assume that the scaffold is large enough to allow for stacking of three 10-brick packets. One laborer and three masons are defined in the system. No bricks are stacked on the scaffold at the beginning of the shift. Tasks: Resupply stack Mason removes packet Mason lays brick EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    9. CYCLONE: Example 1 EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    10. CYCLONE: Hand Simulation EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    11. CYCLONE: Hand Simulation EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    12. CYCLONE: The Productivity Report EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    13. CYCLONE: the Syntax Main Queue Normal COMBI EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    14. CYCLONE: Paving Example Hot-mix batch plant cycle Aggregate travels through the cold feed bins- regulated by the size of the gate opening, or the speed of a belt, or a combination of the two. The aggregate is sent to a drier. The aggregate continues to the hot elevator by screens to the hot bins. The different sizes of aggregate are released into the weight hopper one bin at a time. The aggregate is dropped into the pugmill for mixing with the asphalt. The mixture is then dropped into a waiting truck or moved to a storage silo. Samples are taken from each hot bin for testing. A sieve analysis is conducted as well as gradation test. Placement (includes 4 cycles) an asphalt distributor is used to spray asphalt on the unpaved surface. The coats are then allowed to cure. the paver is positioned properly onto the road. The screed of the paver is lowered onto block of the same depth of the loose asphalt mat that is going to be laid on the road. After that, the block can be removed and paving can start. Tri-axle truck cycle Roller cycle Spreader cycle Crew cycle EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    15. CYCLONE: Paving Model-the resources The Most important task, identify resources Material: Aggregates Hot mix asphalt material Equipment: Trucks Spreader Roller Batch plant (hot mix) Laborer : 4 laborer 1 roller operator 1 paver operator 1 superintendent 1 truck operators 1 foreman EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    16. CYCLONE: The Tasks Things that process and includes actual production (some are normal and some are COMBI) Loading at batch plant 1 Travel to job site 30 Dumping the asphalt to spreader 1.5 return to batch plant 25 Spreading the asphalt 5 Compacting the asphalt I 15 Check the level 0.5 Compacting the asphalt II 5 Decision Making 0.5 Now, insert the queue, decide which is COMBI and which is Normal EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    17. CYCLONE: Paving Model EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    18. CYCLONE: Cycle by Cycle

    19. CYCLONE: Example 3 Seville Bridge Case: Option 1 Option 2 Option 3

    20. CYCLONE: the benefits Study Productivity Enhance usage Remove conflicts/bottlenecks Manage Production Inform crew of expectations Control progress/take corrective actions Understand/Model the project Build/Formalize knowledge EQUIPMENT MANAGEMENT PROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.EQUIPMENT MANAGEMENTPROCUREMENT OBJECTIVE: Provide the right equipment at the right time and place so the work can be accomplished at the lowest cost.

    21. CYCLONE: Disadvantages Not that intuitive Has non-actual terms in a subjective industry As good as input data

    22. The following information is given for a Caterpillar scraper: Empty weight = 30 tons Maximum heaped volume = 25 LCM Maximum pay load = 35 tons Material: Sandy clay, 1600 kg/BCM, 1350 kg/LCM Job efficiency = 50 minutes/h Operating conditions = average   [20%] Find the most optimum route for the scraper [20%] Estimate the production rate at that route [20%] If the hourly cost of the scraper is estimated at $80/hour and a paved toll road is available for haul or return trips with grade = 2% (down on the haul and up on the return). Would use this toll road on the haul or return trips? what would be the maximum toll you will be willing to pay? Putting it all together: Exam-Quality Example

    23. Putting it all together: Exam-Quality Example In an earth moving operation, you have a fleet of 10 rear dump trucks. Each has a capacity of 17 cubic meters. Each truck costs $130/hour. At the loading area, trucks are loaded using a set of wheel loaders. Each loader has a capacity of 3.2 cubic meters. Loaders are operating with a bucket fill factor of 0.92. The hourly cost of each loader is $75/hour. To loosen the soil, a single dozer is needed. It costs $80/hour. The soil is hauled on a 5% down grade on a paved highway. The travel time is 3 minutes. Midway, and in about 10% of the cases, trucks are required to be weighted in a highway weigh station. This consumes 6 minutes. Upon arrival to the dump site which has unfavourable conditions, a spotter helps the trucks in locating the proper dump location. His hourly wage is $30/hour. The trucks return on the same hauling road. The return trip consumes 3.2 minutes. On the way back, about 10% of the trucks stop for service and about 10% stop to fuel. On average, service consumes 10 minutes and fuelling consumes 6 minutes. The total volume of soil being moved is 30,000 BCM. The soil swell factor is 1.15.   [9%] Draw the Cyclone model for the earth moving operation [9%] Calculate the hourly production rate [7%] Calculate the total cost of moving the soil volume

    24. Module 1: Recap

    25. Resource Management

    26. Resource Management (partial)

    27. Equipment Management Plan Acquire Asses performance levels Site layout Resource-oriented plans Control Utilization levels [optimization or leveling] Matching labor skills Maintenance program Productivity assessment [watch, record, analysis, troubleshoot] Learn LL Change process

    28. Information Management Plan Organizational structure Communication channels Team structure Technology selection Control Collect data {productivity, quality, budget, team performance, manually, computers, instruments, GPS, paper, databases, computer systems} Analyze {manually, Computer systems} Decision {manually, DSS} Support {Communication, tools, info} Learn LL Change process

    29. Knowledge Management Plan P3 Value Analysis Constructability Construction method Labor selection Equipment Technology use Control Record knowledge Support for innovation LL Change process

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