Construction of Bridges

 

Materials

The major materials used for the construction of bridge deck, but are not limited to the following.

  • Concrete (Gr  30/20)
  • Reinforcement
  • Form work & falls work



Equipment

The major equipment used for the construction of the Bridge deck includes, but are not limited to the following.

  • Truck mixtures
  • Sampling & Testing Equipment
  • Total Station & Auto Level
  • Truck Crane/ Mobile crane
  • Generator
  • Compressor
  • Other minor tools
  • Porker vibrator


Safety Management and Control

 Safety precaution will be taken complying with the Road Work Traffic & Safety Manual. Every precaution will be taken to avoid any accidents & damages to adjoining properties, workers, and road users.Deck slab concreting will be poured by directly from tuck mixer by standing on the existing bridge & will maintain the required thickness. Existing Bridge will be closed time to time with help of local Police.All workers will be advised to wear helmets, boots, and gloves while working.  There will be a stand by vehicle near site always if needed in a case of accident. The safety officer inspects several times to inspect safety matters.

 Method and Procedures

 The method and procedures for the construction of bridge deck will follow the steps below. 


Deck Slab Concrete

As shown in the Drawing falls work will be arranged and form work will be fixed to the correct levels for the deck slab and reinforcement will be tied up as per the keeping required cover to the reinforcement.

Request Engineer or Quality Assurance Manager to inspect the reinforcement and form work and getting approval concreting will start.

Deck slab concreting will be poured by directly from tuck mixer by standing on the existing bridge & will maintain the required thickness.

Following day side form work will be removed and curing will be done 7days.

Form work will be removed and traffic will be allowed only after 28 days.

 Finishing work of the Bridge.

 Once construction completed up to deck level Bridge kerb, end pilasters, up right and hand rails will be fixed. Then after all miscellaneous work will be started and complete construction of the Bridge.

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