4 Drill a 12mm hole in the stake 5 Place a 12mm reinforcing bar in the hole in

4 drill a 12mm hole in the stake 5 place a 12mm

This preview shows page 32 - 43 out of 60 pages.

4. Drill a 12mm hole in the stake. 5. Place a 12mm reinforcing bar in the hole in the stake. 6. Check the top of the bar is level. 7. Cement the stake in position. 8. Loop a piece of rope, which is the length of the radius of the building over the reinforcing bar. Measure the distance to the inner and outer sides of the foundation from the working drawings. 9. Use the rope to measure the same distance on the ground. 10. Mark the distances ground the out line of the building. Setting out circular buildings
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astu CEng2005 By: Nati
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Columns and piers, which are up right supports, should be set out on two lines that pass thought the center of the column or pier at right angles to each other. Follow these steps to set out columns and piers: - Locate the positions of the columns or piers on the working drawings. Measure the positions on the ground and place pegs to mark the center of the columns or piers. Check the lines are at right angles to the proposed wall positions. Run lines from the center of the pegs in both directions to the opposite wall positions or profiles. Remove the pegs at the building work progresses Setting out of columns and Piers
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astu CEng2005 By: Nati
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astu CEng2005 By: Nati
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III. Earth work Site Clearing Foundation Excavation Top soil Excavation Reduced level /Bulk / Excavation Trench Excavation Pit / Deep/ Excavation astu CEng2005 By: Nati
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I. Site Clearing All vegetation such as bushes and scrub ; should be removed ; the roots of trees and bushes must be dug out and cleared away . If the new building is to be built on an area of already existing, the old building has to be demolished , the debris cleared away and existing services disconnected and removed . Site clearing will be carried out using manual labours(with pickaxes and spades ) or Machineries . The building site should be inspected for termites as part of the process of clearing the site . astu CEng2005 By: Nati
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astu CEng2005 By: Nati
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II. Foundation Excavation Steps before marking points of excavation: Clearing the site of all plants, debris , etc. Leveling the site to remove large inequalities Preparing a setting out plan Steps in marking points of excavation is summarized as follow: a . Establish reference points b. Fix wooden pegs and batter boards (profile board) around the site to be excavated. c. Mark the center line of the walls, columns astu CEng2005 By: Nati
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d. Mark the plinth lines: lines making the inside and outside of walls e. Mark the inside and outside line of excavation, f. By stretching strings, check right angles, g. If all dimensions are correct and all corners are right angle, mark the cutting on the ground astu CEng2005 By: Nati
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A. The Top soil Excavation Top soil should be removed because; The topsoil contains vegetation , which can damage foundations.
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  • Tape measure, trench excavation, foundation excavation, Top soil Excavation

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