<p class="MsoNormal" style="background:white"><span style="font-size:8.5pt;
font-family:Arial;color:#7A7A7A">I go the message:</span><span style="font-size: 10pt; font-family: Arial; "></span></p>

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<span style="font-size:8.5pt;font-family:Arial;color:#7A7A7A">custom
weighting can not be calculated for SPACE EL1 Core Plnm (B.C43) has 0 delayed
walls, 1 delayed floors and 0 delayed ceilings. There should be at least a
delayed wall and floor, a delayed wall and ceiling, or a delayed ceiling
and floor for custom weighting factors to be calculated. ASHRAE weighting
factors with floor weight of 70 lb/ft2 (342 kg/m2).</span><span style="font-size: 10pt; font-family: Arial; "></span></p>

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<span style="font-size:8.5pt;font-family:Arial;color:#7A7A7A">How
can i fix this problem?</span><span style="font-size: 10pt; font-family: Arial; "></span></p>

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<span style="font-size:8.5pt;font-family:Arial;color:#7A7A7A">Thanks</span><span style="font-size: 10pt; font-family: Arial; "></span></p>

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<span style="font-size:8.5pt;font-family:Arial;color:#7A7A7A">Brian</span><span style="font-size: 10pt; font-family: Arial; "></span></p>