Modern Sydney Harbour Bridge (plate 11A) shows the grandeur of modern technology with metal construction joining two lands. Traditionally India produced excellent bridges with the help of stone and brick (plate 11B & D). Japan a country with plenty of quality bamboo has made use of bridge construction with Bamboo Bridge (plate 11C) to join two lands. 

Hence, each time man thought of joining it invented new ways to solve the problems.

Exercise #01: give three alternative solution of joining three office chairs in rows that would be installed separately and can be dismantled for transportation.