Technical Booklet G Resistance to the Passage of Sound·Page 56·2.124
Wall type 3.1 and 3.2 - hollow core and plank floors prohibited
Hollow core concrete plank and concrete beam floors with infilling block should not be continuous under solid masonry core separating walls.
Hollow core concrete plank and concrete beams with infilling block floors should not be continuous under the solid masonry core of a type 3.1 or 3.2 separating wall.
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