Which component is used to anchor the base to a concrete slab?

• A. Lag Screws
• B. Platform Gate
• C. Masonry Anchors
• D. Control Box

Answer: (C)

When securing a machine base to a concrete slab, you need fasteners that are designed to grip and hold in masonry. Masonry anchors are made for concrete and provide the necessary withdrawal and shear strength to keep the base fixed during operation and vibration. The correct approach is to drill the hole to the proper size, insert the anchor, and tighten so the anchor expands or locks into the concrete, creating a solid, stable mount for the escalator base.

Lag screws are typically used in wood or metal substrates and don’t offer the reliable anchoring required for a concrete floor without specialized hardware, so they’re not the best choice here. A platform gate is a safety/access component, not an anchor, and a control box is an electrical enclosure, not a fixing device.