| CPC G06F 3/0488 (2013.01) [E04B 1/14 (2013.01); E04B 1/2604 (2013.01); E04B 1/7654 (2013.01); E04B 1/78 (2013.01); G06F 3/04847 (2013.01); E04B 1/2403 (2013.01); E04B 1/26 (2013.01); E04B 1/94 (2013.01)] | 20 Claims |
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1. An insulative structural member comprising:
a first elongated frame member having a first length;
a second elongated frame member spaced from and substantially parallel to the first elongated frame member, the second elongated frame member having a second length substantially the same as the first length;
a central elongated frame member spaced between and parallel to the first and second frame members, the central frame member having a third length substantially the same as the first length; a plurality of first connecting members joining the first elongated frame member to the central frame member, the first connecting members having a connection length shorter than the first length; and
a plurality of second connecting members joining the second elongated frame member to the central frame member, the second connecting members having a connection length substantially shorter than the first length;
providing:
a first direct path between exterior-facing surfaces of the first and second frame members with a first-direct-path span and a maximum cumulative distance between structural parts that is greater than any other cumulative distance between structural parts for any direct path between exterior-facing surfaces of the first and second frame members;
a first most-direct metric path between the first elongated frame member and second elongated frame member with a first path length L1, a first span S1, and a first span-wise indirectness I1={L1/S1}−1 that is less than any other span-wise indirectness for any other most-direct metric path between the first and second frame members;
a second most-direct metric path between the first elongated frame member and second elongated frame member with a second path length L2, a second span S2, and a second span-wise indirectness 12={L2/S2}−1 that is less than any other span-wise indirectness for any other most-direct metric path between the first and second frame members in the same bundle of metric paths but is greater than any other minimum value of span-wise indirectness for any other bundle of metric paths;
and being configured as one of a;
first-type insulative structural member, second-type insulative structural member, third-type insulative structural member, fourth-type insulative structural member, fifth-type insulative structural member, sixth-type insulative structural member, seventh-type insulative structural member, eighth-type insulative structural member, ninth-type insulative structural member, tenth-type insulative structural member, eleventh-type insulative structural member, twelfth-type insulative structural member, thirteenth-type insulative structural member, fourteenth-type insulative structural member, and fifteenth-type insulative structural member;
wherein the
first-type insulative structural member is configured to provide no direct path of conductive heat flow through the structural parts, in a direction perpendicular to the longitudinal direction, between interior-facing surfaces of the first and second frame members;
second-type insulative structural member is configured to make the first span-wise indirectness I1 between 0% and 10%;
third-type insulative structural member is configured to make the first span-wise indirectness I1 between 10% and 25%;
fourth-type insulative structural member is configured to make the first span-wise indirectness I1 between 25% and 50%;
fifth-type insulative structural member is configured to make the first span-wise indirectness I1 between 50% and 75%;
sixth-type insulative structural member is configured to make the first span-wise indirectness I1 between 75% and 100%;
seventh-type insulative structural member is configured to make the first span-wise indirectness I1 greater than 100%;
eighth-type insulative structural member is configured to make the second span-wise indirectness I2 between 0% and 10%;
ninth-type insulative structural member is configured to make the second span-wise indirectness I2 between 10% and 25%;
tenth-type insulative structural member is configured to make the second span-wise indirectness I2 between 25% and 50%;
eleventh-type insulative structural member is configured to make the second span-wise indirectness I2 between 50% and 75%;
twelfth-type insulative structural member is configured to make the second span-wise indirectness I2 between 75% and 100%;
thirteenth-type insulative structural member is configured to make the second span-wise indirectness I2 greater than 100%;
fourteenth-type insulative structural member is configured to give a maximum cumulative distance between structural parts greater than {(9% ±1%) times the first-direct-path span} and less than {80% times the first-direct-path span};
fifteenth-type insulative structural member is configured to give a maximum cumulative distance between structural parts greater than {(9% ±1%) times the first-direct-path span} and less than {60% times the first-direct-path span};
sixteenth-type insulative structural member is configured to give a maximum cumulative distance between structural parts greater than {(9% ±1%) times the first-direct-path span} and less than {50% times the first-direct-path span}; and
the structural parts include the elongated frame members, plurality of first connecting members, and plurality of second connecting members.
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