Sandwich panels sustain Passive House specs

The 276-unit Second + Delaware apartment complex in Kansas City, Mo., is touted as the world’s largest Passive House structure. One of the key design elements to help the project garner the designation are custom 16-in. thick sandwich panel-style precast walls. General contractor Crossland Construction of Columbus, Kan. manufactured the precast panels at its in-house fabrication plant (Crossland Prefab). The…

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