Building construction, the techniques and industry involved in the assembly and erection of structures, primarily those used to provide shelter. Building construction is an ancient human activity.

91 - Construction materials and building. Emergencies in buildings, see 13.200. Fire resistance of building materials and elements, see 13.220.50.

It began with the purely functional need for a controlled environment to moderate the effects of climate. Vals doga noti la. Constructed shelters were one means by which human beings were able to adapt themselves to a wide variety of climates and become a global species. Human shelters were at first very simple and perhaps lasted only a few days or months.

Over time, however, even temporary structures evolved into such highly refined forms as the igloo. (100 of 33079 words).