Describir: National building code of Canada 1970 :

 _    _      ___      ______    ______    ______   _    _     _  _      ___    
| \  / ||   / _ \\   /_   _//  /_   _//  /_____// | || | ||  | \| ||   / _ \\  
|  \/  ||  / //\ \\  `-| |,-    -| ||-   `____ `  | || | ||  |  ' ||  / //\ \\ 
| .  . || |  ___  ||   | ||     _| ||_   /___//   | \\_/ ||  | .  || |  ___  ||
|_|\/|_|| |_||  |_||   |_||    /_____//  `__ `     \____//   |_|\_|| |_||  |_||
`-`  `-`  `-`   `-`    `-`'    `-----`   /_//       `---`    `-` -`  `-`   `-` 
                                         `-`