Planning and Organising Two Plant and Equipment Excavation calculation ConstructioConstrucc 2 : 2012 Construction Practice 2 : 2012 Presenter Tony Bosnich/Glenn Edmonds Oct 2014 © Unitec New Zealand >>DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT 1.Analysis excavation plant requirements for large commercial sites 2.Consider options and confirm selection. 3.Carry out Excavation Quantity calculations to confirm validity of selection and highlight any problem areas. Confirm haulage requirements and number of machines >>DEPARTMENT OF CONSTRUCTION Learning outcomes

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT 1.Analysis Excavation plant requirements Analysis site constraints Constraints and the way we deal with them are the single biggest factor affecting the overall success of the project Run through check list which is similar to the crane exercise 3 DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT List constraints of excavation >>DEPARTMENT TITLE EDIT IN HEADER & FOOTER

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT Large quantities of dirt to remove from siteRestrictions of time in programme but also project specific daily requirementsConsider bulk verses detailed excavationAdjoining properties, access one way, flow throughServices - danger of contact with existing.CommunicationsMovement on site of material, gates, wash down provision, traffic control, rampsPublic protection, across and through public areas requires special care Excavation Specific Constraints 5 DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT Our assignment Consider plan provided sheet a 1. Identify constraints from list on previous slide. 2. What type of excavator would be suitable? 3. How do we get it into place 4. How do we remove it when complete 5. Do we need to attack from more than one work face at a time. 6. Consider operation, dig only stock pile on site, dig and remove off site, bring back suitable fill. 7. Haulage requirements. 8. Other machinery required? Formulate Excavation Proposal 6 DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT Example >>DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT Types of machinery >>DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT Fill in spread sheet in excel as provided in hand out 1.Work out total quantity 1 st Allow for 1.5m from grid line to face of piled retaining wall for working space outside building. Excavation is 7.2 meters from ground floor slab 2.Adjust for bulking of excavated materials 17.5 % 3.Adjust for operator 95% efficiency and machine 90% efficiency. Given machinery bucket size is 1.5 m3 Data sheet production rate is 100m3 per hour 4. What is the total machine hours required for this total excavation. Excavation plant selection Calculations 9 DEPARTMENT OF CONSTRUCTION

>>FACULTY OF TECHNOLOGY AND BUILT ENVIRONMENT Movement of traffic and haulage maybe greater problem than production capacity of diggers. Consider both aspects how much material will excavator produces per hour. Round trip - the meaning of??? Consider also >>DEPARTMENT OF CONSTRUCTION