Expansion Joint Fixing Methodology
General Overview:
The task involves fabricating and installing expansion joints in accordance with the technical drawings and specifications provided.
Material Compliance:
All materials used, including fabrication, handling, storage, installation procedures, and adherence to standards, must meet the specifications outlined by the Ministry of Road Transport and Highways (MORT&H).
Procedure Of Expansion Joint Fixing :
- Adjusting Gap: The gap between steel edge members is adjusted based on the temperature during installation using a clamp plate arrangement.
- Positioning: The expansion joint is lowered into position within the block out.
- Level Adjustment: The level and gradation are adjusted to match the final finished level of the deck slab at the carriage way.
- Anchoring: Anchor studs are securely welded to the deck reinforcement to ensure stability. Additional steel bars may be employed for reinforcement.
- Formwork Installation: Necessary formwork is installed to support the concrete pour.
- Concrete Pouring: Concrete of the specified mix is poured into the block out, ensuring proper compaction.
- Clamp Plate Removal: Once the concrete has been poured and set, clamp plates are removed.
- Curing: Proper curing procedures are followed for the block out to ensure optimal strength and durability.
- Joint Alignment: To maintain uniform joint opening and extrusion parallelism, a string line is utilized.
Equipment/Machinery Required:
- Welding Machine: 1 unit
- Cube Moulds: As required
- Slump Cone Apparatus: 1 set
By adhering to this methodology, expansion joints can be effectively fabricated and installed to meet the required standards and specifications.
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