1. Width of the hoistway: Facing the elevator hall door, measure the clearance size between the two side walls of the hoistway. The hoistway depth: the clearance from the inner wall of the hall door to the rear wall of the hoistway. For the width and depth of the hoistway, each layer should be measured to prevent the upper and lower deviations of the hoistway from being too large. Use a slender raft to poke into the inner wall of the hoistway from the entrance of the hall door, and then pull out the raft to measure the length of the probe. The steel tape measure for the width measurement of the hoistway can be used. If the depth of the hoistway is not large, it can be directly measured into the hoistway with a steel tape measure. Note that some well walls are designed to be thicker and thinner, resulting in a narrower and wider width of the well.
2. Doorway: Measure the width, height, and position of the door hole, and measure the width of the left and right wall sills to determine whether the center of the doorway is at the center of the hoistway and how much deviation. The reinforced concrete lintel above the survey door hole generally requires 300mm height and the same thickness as the wall to be used for installing the landing door device. There must be reinforced concrete beams under the door opening of each floor to install the hall sill device. If there are ox legs, it must be recorded. The height of the hole at the door is generally: from the completion of the renovation, the net height of the elevator is +100mm.
3. Floor height: Measure the vertical distance between the finished two floors of the adjacent floor at the entrance of the hall. A raft can be used to measure the net size of the upper slab from the lower slab to the ground of the foot station, and the sum of the slab thickness is the height of the slab. The height of the floor can also be measured at the upper and lower stairs of the stairs that are equal to the floor of the hall door.
