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Surface t]Juifd<strong>in</strong>gs<br />
Sites where there is stone or a<br />
high water table prevent<strong>in</strong>g the<br />
recess<strong>in</strong>g of the build<strong>in</strong>g <strong>in</strong>to<br />
the Earth have the thermal<br />
shelter placed on the Earth with<br />
<strong>in</strong>sulation all around. Very<br />
cold climates sometimes<br />
require <strong>in</strong>sulation under Lhe<br />
floor of a surface build<strong>in</strong>g to isolate<br />
the thermal mass of the<br />
shelter from the cool earth that<br />
is subject to frost l<strong>in</strong>e tempera-<br />
Sloped glaz<strong>in</strong>g (perpendicular<br />
to w<strong>in</strong>ter sun angle)<br />
occurs on the south side to<br />
admit maximum warmth of the<br />
sun so it can be absorbed by the<br />
mass of the shelter. Warm climates<br />
have no <strong>in</strong>sulation under<br />
the floor. This l<strong>in</strong>ks the mass of<br />
the shelter to the cooler mass of<br />
the Eal,th. Vertical glaz<strong>in</strong>g<br />
occurs on the north side (<strong>in</strong> the<br />
northern hemisphere) leav<strong>in</strong>g<br />
the south side solid and block<strong>in</strong>g<br />
solar ga<strong>in</strong>.<br />
COL1) CLFjI,{}{TE<br />
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22<br />
'1(iglii' - illtltTior oja surfnce 6uift ,(,c.rmalma.;.< {mift{<strong>in</strong>g<br />
In tfte Cjreater 'WorM ('ommm,it!J iTt 'Tno;;, '}(J:w !llq<strong>in</strong>l
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