Spider silk is a protein fiber spun by spiders. Spiders use their silk to make webs or other structures, which function as sticky nets to catch other animals, or as nests or cocoons to protect their offspring, or to wrap up prey. They can also use their s

PROPERTIES

Spider silk is incredibly tough and is stronger by weight than steel.  Quantitatively, spider silk is five times stronger than steel of the same diameter.  It has been suggested that a Boeing 747 could be stopped in flight by a single pencil-width strand and spider silk is almost as strong as Kevlar, the toughest man-made polymer.  It is finer than the human hair (most threads are a few microns in diameter) and is able to keep its strength below -40°C.  The toughest silk is the dragline silk from the Golden Orb-Weaving spider (Nephilia clavipes), so-called because it uses silk of a golden hue to make orb webs.

Spider silk is also very elastic and silk (sticky silk for catching prey) remains unbroken after being stretched 2-4 times its original length.  Spider silk is tougher, more elastic and more waterproof than silkworm silk so it could have a much wider range of applications.  It is simple to see why spider silk is of such interest to materials chemists since new ultra-strong  fibres based on the silk could be developed.

IMPLEMENTATION IN DRAWINHG

 

AS WE KNOW ACCORDING TO THE STATEMENT THE SPIDER SILK IS MUCH STRONGER THAN STEEL IN COMPARISON TO STRENGTH AND ADHESIVENESS. SO WE CAN USE SPIDER SILK IN PLACE OF STEEL BARS (REINFORCEMENT) IN FRAMED STRUCTURE BUILDINGS, IN TRUSSES AND IN SUSPENSION BRIDGES.

REPLACEMENT OF STEEL WITH SPIDER SILK INCREASES THE STRENGTH OF THE STRUCTURE. WE CAN ALSO REPLACE THE JOINTS OF BRIDGES AND TRUSSES BY STICKING IT TOGETHER (COHESIVE FORCE).

OR WE CAN MAKE A WHOLE STRUCTURE BY USING SPIDER SILK. SO THE STRENGTH OF THE  WHOLE STRUCTURE INCREASES MANY TIMES IN COMPARISON TO NORMAL STRUCTURE. AND THE OF THE OVERALL BUILDING WEIGHT ALSO DECREASES, WHICH IS ONE OF THE FACTOR WHICH INCREASES THE STRENGTH OF THE BUILDING. IT CAN ALSO BE USED AS ROOFING MATERIAL FOR A LARGER SPAN LIKE STADIUM.