Option 1. Adding an elevator with a corridor bridge: ① Most old buildings with brick-concrete structures face north and south. The elevator room and corridor bridge can be installed in the north direction of the house and can be separated from the building. A certain distance; ② Cut out and expand the brick wall of the window in the walking stairwell to form a doorway leading to the corridor bridge and elevator; ③ Use the window on the outer wall of the corner of the walking staircase in the old building to open the doorway to the corridor bridge, and residents on each floor can walk Half a floor of stairs to enter the corridor bridge; ④The design adopts a corridor bridge shared by the 2nd and 3rd floors, a corridor bridge shared by the 3rd and 4th floors, a corridor bridge shared by the 4th and 5th floors, and a corridor bridge shared by the 5th and 5th floors. The 6th floor shares the corridor bridge. For a 6-story brick-concrete building, only 4 floors of corridor bridges need to be built. Features: ① The corridor-type elevator installation can be shared by 2 or 3 units of residents, which saves elevator costs compared to the current installation of 1 elevator per unit; ② The corridor bridge has a simple structure and low construction costs; ③ Corridor The bridge and elevator room are built in the north direction of the building, and railings are used to protect pedestrian safety, which has little impact on the lighting of the building; ④ It has no negative impact on fire protection.
Option 2. Adding an elevator to a slab floor: ① Add a corridor to the south of the building, and install an elevator in the middle or end of the corridor. The layout of the house is similar to that of a slab floor; ② Each unit, 1 The windows on the east or west side of the balcony of residents No. 2 and 3 are demolished and converted into doors for entering the new corridor. To ensure safety, a south-facing safety door can be installed between the residents of the two adjacent units to prevent idlers from entering the corridor. The balcony door can be easily entered from inside; ③ Large windows and glass windows should be installed in the south direction of the newly built corridor to ensure indoor lighting. Features: ① The most prominent feature of this solution is that there is no need to walk up and down the half-floor walking stairs to enter the corridors and elevators; ② Although residents living on the first floor do not need elevators to enter and exit the building, they also benefit from the increased corridor area and reduce the resistance to installing elevators. ; ③ Compared with the current method of adding one elevator to each unit, this plan can save elevator costs and have no impact on fire safety; ④ The plan of adding an elevator to a slab floor requires the reconstruction of balconies and the addition of corridors, which is technically feasible and feasible. It is not difficult, but the cost is much higher than building a covered bridge.