This instructable tells you how to build a pavilion with these bottles.
1. Your first step is to collect as many discarded plastic bottles as you can..They can be of various capacities.
2. Next step is to find a place where you can get a hell load of dry sand (finer,the better).
3. Next process is to take the bottles, fill them with sand, sealed and then paste them with a mixture made of earth, clay, sawdust and a little cement to provide additional strength and durability.The following video shows how to fill the bottle.
4. Now you are all set.Always start with the pillar.You can have as many pillars as you want,but not less than 3.
5. Dig a cylindrical pit about 60cm in depth.The radius should be atleast 10cm more than the length of the bottle that you are going to use for constructing the pillar.
6. Make a cement bed(about 4cm thickness)in the pit.Insert an long iron/steel rod at the centre.Tie a long and strong thread to the rod. Now we are going to lay 10 or 11 bottles around this rod.For this,First lay a bottle on the bed such that the bottle is radially oriented towards the centre.(i.e.,the cap is oriented towards the rod).
7. Take the thread and make a knot around the neck of the bottle you just laid.Put the next bottle in similar way keeping in mind that the caps of the 2 bottles touch each other.Make a knot around the 2nd bottle also.Repeat the steps until you lay all the 11 bottles.You have made your first course of bottles.
8. Fill in the gaps between the bottles with rubble and cement.Make the next bed and continue this process till you fill the entire pit.Hurray!your foundation is complete.Leave it for a few hours so that the cement will solidify.
9. After you have made the foundation for all your pillars,you can start building the pillar.Lay the bottles like you did for the foundation,and you will see your pillars rising.You can put broken bricks or other construction wastes between the bottles so that they don't move.
10. Now if you want you can plaster your pillar with cement.This pillar is many times stronger much cheaper than an ordinary pillar made with bricks.