Source google image: http://4.bp.blogspot.com/-i-BvCLApVy8/VM52yX-8o_I/AAAAAAAAASw/WHQNB_ThGCQ/s1600/Gradient-temp%C3%A9rature-isolation-int%C3%A9rieure.jpg
Norme isolation mur
Source google image: http://4.bp.blogspot.com/-i-BvCLApVy8/VM52yX-8o_I/AAAAAAAAASw/WHQNB_ThGCQ/s1600/Gradient-temp%C3%A9rature-isolation-int%C3%A9rieure.jpg