How are entry frames typically attached to the hoistway?

Entry frames in hoistways are typically attached using bolts or anchors to ensure a secure and stable installation. This method provides the necessary strength and durability required for the operational demands of a passenger elevator. The use of bolts or anchors allows for a solid connection to the building structure, accommodating the dynamic loads and forces that occur during elevator operation.

Additionally, this method facilitates maintenance and potential future adjustments because the frames can be disassembled if necessary without damage to the surrounding structure. It also helps prevent misalignment, which is critical for the proper functioning of the elevator doors and the safety of the passengers. Other methods, like welding or adhesives, may not provide the flexibility or strength required for this type of installation, making bolts or anchors the preferred choice.