MATERIAL REQUIREMENTS

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assalamualaikum..
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DAA3511gt GEOTECHNICS lt
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MATERIAL REQUIREMENTS
By IR. MOHD AYUB BIN ABDUL GHANI 850616-11-5297
AB03014
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MATERIAL REQUIREMENTS

• Backfill Material
• Facing Element
• Concrete Anchor Blocks
• Reinforcing Elements
• Fabrication And Galvanisation
• Connections
• Joint Materials
• Cushion Pad

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FACING ELEMENT

• PRECAST CONCRETE FACING PANEL
• ALTERNATIVE FACING ELEMENT

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PRECAST CONCRETE FACING PANEL

• FACING FINISH AND TOLERANCE
• ANCHORAGE LUGS
• LIFTING HOOKS
• REINFORCEMENT BARS
• MARKING
• HANDLING, STORAGE AND TRANSPORTATION

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Facing Finish And Tolerance

• The finish of the exposed face of the panel shall
  be as shown in the drawings and shall be free of
  honeycombs, stains, irregularities or deep
  cracks.
• Tolerance in dimensions are as follow
• The height of full panels shall be within /-5 mm
  while the height of half panels shall be within
  /-3 mm.
• The width of all panels shall be within /-5 mm.
• The difference between the lengths of the
  diagonals shall not exceed 10 mm.
• Twist or warp shall not exceed 5 mm.

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Anchorage Lugs

• Shall be pre-bent, holed and cast into the facing
  panels in accordance to the dimensions shown in
  the drawings.
• They shall be hot dipped galvanised to a minimum
  thickness of 85 µm in accordance to BS 729.
• Care must be taken to ensure that the lugs do not
  come into contact with any surface of the
  internal reinforcements of the panels or blocks.

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Injection of mortar into the tendon mounted
anchorages.

• Preparing the anchorage (bond-type).

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Lifting Hooks

• The lifting hooks shall be pre-bent and cast into
  the facing panels in positions in accordance to
  the dimensions showns on the drawings.

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Reinforcement Bars

• To required the reinforcement bars shall be
  placed in accordance with the drawings.
• They shall be high yield deformed bars in
  conformity with MS 1461973, BS 44491969 and
  1978.

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Marking

• The date of manufacture and type of each panel
  shall be clearly scribed on the unexposed surface
  of the panel.

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Handling, Storage And Transportation

• Such a manner as to eliminate the possibilities
  of chipping, discoloration, cracks, fractures,
  stains and excessive bending stress.
• The concrete strength of the panels shall reach a
  minimum compressive strength of 23 MPa before
  they are allowec to be transported.

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Alternative Facing Element

• Shall be subjected to the approval of S.O
  provided the structural strength of the
  alternative facing element is equivalent to the
  precast concrete facing panels.

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Concrete Anchor Blocks

• The system requires shall be cast with the same
  concrete strength and quality.
• The dimensions of the blocks shal not be less
  than those shown in the drawings.

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View of anchorage block showing position of 6
AFRP tendons.

• End view of anchor blocks with external cables
  and anchorages.

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Reinforcing Elements

• Galvanised carbon steel bars
• The reinforcing bars shall generally be in
  accordance with composition and property
  requirements of MS 146 or BS 44491988.
• Galvanised carbon steel strips
• The carbon steel strips shall comply with BS
  1449Part 1 (1972) either quality KHR 34/20P or
  KHR 54/35P.

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Fabrication And Galvanisation

• Shall be cut to length and threaded or holed in
  specified locations.we be inspected to ensure
  that they are free from defects that may impair
  their strength and durability.

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Connections

• Bolting and welding, in order to connect members
  together.
• The connections could be rigid, semi-rigid or
  nominal pinned.

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Type Of Nuts
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Type of Washers
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Type Of Screws

SCREWS
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Type Of Bolts
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Joint Materials

• The fillers for the vertical and horizontal
  joints where pads are used shall be flexible open
  cell polyurethane foam strips of 40 mm square
  cross section or approved equivalent materials.

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Cushion Pad

• The cushion pads placed at the horizontal joint
  shall be made of rubber with shore hardness 85 or
  approved equivalent materials.

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Semoga Allah S.W.T Memberkati Apa Yang Kita
Pelajari Pada Hari Ini..
Sekian, wasalam.