culvert | types of culverts | box culvert | construction of box culvert | civil engineering

 Culvert:

culvert means a types of structure which allows water to flow under a rail road, road or any obstruction from one side to other side.

Types of culverts:

• slab culvert
• box culvert
• single pipe culvert
• multiple pipe culvert
• single arch culvert
• multiple arch culvert

Box culvert:

It is a short span bridge , over highways, water ways, railways etc. 

Steps for construction of box culvert:

1. Layout and excavation: 

• Layout of any structure shows the plan of its foundation on ground surface according to its drawings.
• After this excavation work will be carried out exactly.

      2. Compacting the soil: 

          Soil compaction must be done to reduce the void space between soil particles.

      

      3. Laying of profile correction course (PCC):

       4. Placing of reinforcement for raft (foundation):

            5. Shuttering for raft foundation

            6. Casting of raft

            7. Shuttering for bottom haunch:

             8. casting of bottom haunch

             9. Fixing of distributor rods for vertical wall portion:

                 Horizontal reinforcement called as distributor rods. Vertical reinforcement called as vertical                     rods. These vertical rods will be provide for both inner and outer faces.               

 

        

             10. Shuttering for wall portion ( will vary depends on wall height)

             11. Staging for slab along with top haunch

                  12. Slab reinforcement:

                    

                13. Casting of slab:

                 14. curing for every step to be done with gunny cloth: