Kiri Robbie
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Everything posted by Kiri Robbie
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Learn how to manage risks related to temporary works structures and understand the risk identification and management process from tender to execution. https://eea.org.au/courses/risk-management-temporary-works
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I havent been lucky enough to use bentonite or polymer fluids as any opputunity to use them another solution (i.e. jet grouting, permanent casing, CFA etc) is used. What is the reason for this? Are drlling fluids not as cost effective?
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What will be a good 'primer' resource for piling design and temporary support as it relates to drilling for Australian conditions?
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What commonly is the disposal process when using water for support? I presume that the water will be sediment laden which has its own issues. We are unfortunate not to have a liquid waste licensed facility in our immediate area.
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I'm interested to know if the selection and suitability of the 3 types of drilling fluids also applied to horizontal directional drilling?
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For end bearing type of pile, how can we ensure to clean the pile base properly if we use bentonite or polymer fluid? There could be a formation of thin layer of of 20-30mm settlement soil particles between interface of concrete and rock.
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Is there an application for lost circulation materials such as walnut hulls, mica etc to help reduce fluid loss with bentonite or polymer fluids?
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Have you got any thoughts on using a mix of bentonite and polymer? Also I have read some studies on use of polymer resulting in slight increase in skin friction. Any thoughts on that too?
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Do you require seeking Pile Certification after installation to ensure conformity based on codes, standard and legislation?
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In reference to ARMP 6047, do you recommend seeking an approval for Fire Ant Management Plan with the Department of Biosecurity to ensure that the bore piling is not located within the fire ant restricted area?
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In the life cycle of deep excavation, where do you position the soil classification study to understand the ground conditions where the water table is?
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What clearance do you allow for the pile diameter compared to the steel reinforcing clearance? How parallel and straight are deep pile holes?
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In regard to my earlier question about pouring concrete into a pile hole, the concrete was poured directly from the shute of a concrete truck from the top and not pumped from the bottom up. Also, the water was rain water that included mud.
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I have seen piles being poured with concrete when the pile hole is full of water to the surface. They rely on the concrete to push the water out. Can you comment of what effect that might have?
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When the pile is in place, it could be surrounded by a slippery bentonite layer along its full length. What is the effect of this layer if you are relying on friction as part of the load bearing strength of the pile?
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I am interested in the legal aspects here. If you drill piles along a boundary and the design requires load to be transfered onto the adjacent property, what happens when that owner excavates and your design is weakened. Who is at fault? Next door?
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When is a foundation classed as deep? Is there a minimum depth in metres or is it variable?
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Wsa there any Lift plan prepared by the crane operator prior any lift of the reinforcement cage and approval granted by the project manager/superintendent/engineer?
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Where was the definition of Temporary Works on the first slide from? Especially the second part regarding the staged effects on permanent structure? Is there a code reference?
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Where can I find information about the necessity to add 30% to the leg load?
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When will the new AS 3610 be issued?
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What software do you usually use to model a scaffold in its 3D form?
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What are the requirements for re-usable material in TW in regards to lifespan or testing original capacities are maintained for every re-use
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Do you recommend any journals or publications that may be useful when design of scaffold (excluding the Australian standards).
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thanks for the great presentation. Could you tell me which Australian Standards and regulation for , swing stages, mast climbers for design and testing? thanks.