Construction Presentation

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Construction: Visual Diary

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Construction Presentation

  1. 1. BBSC 341: CONSTRUCTION: VISUAL DIARY PRESENTATION Ankit Surti
  2. 2. I chose to document the excavation and the piling process of the foundation system used in the 1 Featherston Street Project. I also, documented the foundation system used for the cranes which is part of the construction phase of the project and appeared to be similar to the piling process.
  3. 3. 12 Piles are to be casted on-site to increase the bearing capacity. They are casted on-site due to the substantial size of the piles. The pile I explored is shown on the left, which was 26m deep and 1.5m in diameter Every pile varies in depth due to uneven bearing capacity of the reclaimed land.
  4. 4. Once the hole is drilled, the steel casing is placed into the hole as a temporary formwork and to maintain the form of the hole. After the steel casing is placed, the reinforcing cage is craned into place.
  5. 5. Shows Tremie Tube getting placed into the hole. This is used to pour concrete in due to the substantial size of the hole. The Tremie Tube has to be placed right down to the bottom of the hole in order to get the concrete right down to the base of the pile. A funnel is placed at the top of the tube in order to make the pouring process of the concrete easier.
  6. 6. Shows the pouring of the concrete process. 6 trucks were used to pour the concrete for one pile.
  7. 7. Polymer liquid is placed into the hole to help set the concrete and to bind the soil on the edges of the hole. As the concrete is poured it overflows and as a result, drainage system has to be placed to pump the polymer out.
  8. 8. Once the concrete is poured to the depth specified, the steel casing is lifted off. After the casing is lifted off, another reinforcing cage is placed carefully in position. This allows for further construction above the piles. Image on the right shows the finished pile.
  9. 9. This is exactly what has been done on-site as shown in all the images. However, the 4th process which involves feeding bentonite was not mentioned. The structural engineer checks all the reinforcing bars and cages in order to ensure that they are constructed properly and as specified. The structural engineer also, checks a report on the concrete to ensure the crushing capacity is complied and as determined in the specifications. The geo-tech engineer ensures the right depth is created for the piles and the architects ensure that the construction phase is done as specified.

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