A minimum of half of the supporting feet of the insert must remain in contact with the slab during concrete placement.

• A. True
• B. False
• C. Only during high humidity
• D. When using epoxy anchors

Answer: (B)

The important idea is that the insert should be fully seated against the slab during concrete placement. If only half of the supporting feet stay in contact, the insert can tilt, shift, or settle as the concrete is poured, leading to misalignment, incomplete embedment, or uneven load transfer. This is about maintaining stable, full contact to ensure the insert performs correctly once the concrete cures.

Humidity or using epoxy anchors doesn’t change this seating requirement. Humidity won’t alter the need for full contact, and epoxy anchors are a different installation method that doesn’t justify partial contact of the feet during placement.