HISTORY OF BUILDING Introduction Evolution of built envelopment Building construction is the art of providing shelter to human being. It is the oldest industry which started with the existence of man. This is because man had to protect himself from atmospheric inconveniences such as rain, wind, sunshine, snow etc. The first pre historic man who lived during Stone Age lived in caves which were either excavated on stone or on firm grounds. The excavation tools being sharp stones or sharpened pieces of wood. As man continued to become more civilized there came to existence of constructed shelters such as traditional grass thatched houses with mud walls e.g. maasai manyattas, the Eskimo igloos etc. Today we have modern construction technology in building industry with very much diversified fields such as:- - Masonry / concreting - Plumbing / drainage works - Carpentry / joinery - Painting - Electrical works - Air conditioning - Gases installation - Tilling