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Dry goods! Guangzhou old building with elevator 50 questions

Mar 18, 2019

01 Q: What are the relevant policy documents for installing elevators in old buildings?


    A: At present, the normative documents based on the installation of elevators in old buildings in Guangzhou are: "Guangzhou City's existing residential elevators" (Suifu Office Regulations [2016] No. 11) and "Guangzhou City's existing residential additional elevator technical regulations 》(Sui Guotu Planning Regulations [2016] No. 1).


    02 Q: What is the way to apply for the planning permission for installing elevators in old buildings?


    Answer: 1. The application can be made by the owner or the owner's representative, or by the owner's committee. If the number of owners applying for more than 5 persons is selected, no more than 5 owners shall be elected as representatives;


    2. The owner may entrust the original real estate development enterprise, property service enterprise, elevator production and installation enterprise, and additional elevator consulting service institution to submit an application;


    3. If the house with elevator installed belongs to the house reform room, the owner can entrust the original house to sell the house to apply; the original house to sell the house has been closed, bankrupt, and revoked, and its housing maintenance fund has been transferred to the management of its superior department. You can entrust the superior competent department to apply for it. (See Article 9 of the Measures for Adding Elevators to Existing Residential Buildings in Guangzhou)


    03 Q: What materials do I need to apply for an elevator planning permit?


    A: 1. Application form and application form for filing;


    2. Applicant identification document;


    3. The drawings of the architectural design plan issued by the corresponding architectural design unit are in duplicate;


    4. The structural safety instructions issued by the architectural design unit and the instructions for meeting the fire protection design specifications;


    5. The owner of “Double Two-thirds” agrees to the written documents of the elevator and the written opinions of the architectural design proposal agreed to be submitted and the copy of the certificate or registration certificate of the immovable property right;


    6. Written materials for the applicant to negotiate with the relevant owners;


    7. Other statutory information. (See Article 12 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”)


    04 Q: What is the consent of the owner of the “two-thirds”?


    A: The intention and installation design plan for installing the elevator should be agreed by the owner of the unit or the owner of the building with 2/3 of the total area of the building and 2/3 of the total number of the building. (See Article 5 of the Measures for Adding Elevators to Existing Residential Buildings in Guangzhou)


    05 Q: In what form should I agree that I have obtained the “two-thirds” owner?


    A: The written statement of the “two-thirds” owner agreeing to install the elevator and the written opinion of the architectural design plan agreed to be submitted should be submitted, accompanied by a copy of the ID card and the immovable property certificate of the owner of the elevator. Or a copy of the registration certificate. (Refer to Article 12 (5) of the Measures for Adding Elevators to Existing Residential Buildings in Guangzhou)


    06 Q: When a homeowner dies and his spouse or child agrees to install an elevator, what should I do in this case?


    Answer: First, the spouse or child obtains all the property rights of the house through legal inheritance and handles the transfer of property rights; the second is to apply for the inheritance of the notarization and obtain the written consent of all legal heirs of the property right. If foreigners are involved, submit their valid passport and Visa, or other identification documents that can replace passports and visas.


    07 Q: A property right certificate is shared by both husband and wife. Does the calculation of the “two-thirds” number count as one person or two?


    A: Count 1 person. According to Article 5, paragraph 2 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, the calculation of the area and the number of owners shall be carried out in accordance with the relevant judicial interpretations and relevant regulations of the Supreme People's Court. According to the judicial interpretation of the Supreme People's Court: "The number of owners, calculated according to the number of proprietary parts, a proprietary part is calculated by one person."

08 Q: In the same unit ladder, one (or more) of the same owner owns 2 properties, and the number of "two-thirds" is 1 or 2?


    A: Count 1 person. According to Article 5, paragraph 2 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, the calculation of the area and the number of owners shall be carried out in accordance with the relevant judicial interpretations and relevant regulations of the Supreme People's Court. According to the judicial interpretation of the Supreme People's Court: "If the same buyer has more than one proprietary part, it shall be calculated by one person."


    09 Q: There are three unit ladders in the east, middle and west of a building. Is the calculation base of two-thirds calculated according to the whole building or according to the ladder of this unit?


    A: Calculated according to the unit ladder. According to Article 5, paragraph 3 of the “Measures for Adding Elevators for Existing Residential Buildings in Guangzhou”: “Additional elevators in sub-units do not affect the structural safety of other units in this building. The total area and total number of persons referred to in the first paragraph of this Article shall be in accordance with the addition of elevator units. The house is calculated independently." Two-thirds of the calculation base is calculated by adding the elevator unit ladder.


   10 Q: A landlord submitted a copy of the ID card and signed the agreement on the signature form to express the consent to install an elevator. However, due to various reasons, the copy of the real estate right certificate was not provided. Can it be counted in two-thirds?


    A: No. According to the requirements of Article 12, paragraph 5 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, the owner must submit a copy of the immovable property right certificate or the registration certificate.


    11 Q: Since the approval department thinks that the plan needs to be revised and improved, after the commissioned owner's representative has revised the plan, do they need to re-sign the confirmation?


    A: Yes. According to the requirements of Article 12, paragraph 5 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, the owner must submit a written document agreeing to the installation of the elevator and the written opinions of the building plan agreed to be submitted, so the project must be re-requested after the plan is changed. Comments on the new program.


  12 Q: Why do you want to pre-approval? what do you need?


    A: The purpose of the pre-grant publicity is to comprehensively consult the opinions of people who install elevators. The plan is required to be announced in the building where the elevator is installed and in the adjacent building which is severely obstructed, not less than 20 days. Interested parties can provide feedback during this time. (See Article 13 of the Measures for Adding Elevators to Existing Residential Buildings in Guangzhou)


    13 Q: What is the content of the public announcement?


    A: The owner of the "two-thirds" agrees to add the written documents of the elevator and the written opinions of the architectural design plan agreed to the review, the plan to expand the elevator and corridor project, the general plan of the location, feedback and inquiry URL, etc. (See Article 13 of the Measures for Adding Elevators to Existing Residential Buildings in Guangzhou)


    14 Q: If someone raises an objection during the pre-approval publicity, what should the applicant owner do? What if there is difficulty in self-negotiation?


    A: If there is any objection during the publicity period and the objection is valid, if the plan has serious occlusion of the owner's house or the feedback on the proprietary part of the owner's house, the plan needs to be revised and the complete set of procedures negotiated by the owner should be completed. If the owner is still unable to reach an agreement after consultation, he may request a third party organization such as the neighborhood committee to negotiate or mediate.


    15 Q: The next building that is not seriously occluded raises objections. If the two sides cannot negotiate, what should I do?


    A: If it is not a serious occlusion situation, according to Article 12 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, whether the negotiation can reach an agreement is not a precondition for planning approval, but it is necessary to provide written materials for consultation with relevant owners. Written materials shall be witnessed or notarized by a third party such as the neighborhood committee, and a witness opinion shall be issued.


    In the process of coordination, it is recommended that the applicant and the opposition party conduct friendly communication and reach a consensus as far as possible. If the mediation is difficult, they may request a third-party organization such as a local street or a neighborhood committee to conduct mediation. If the mediation is still unsuccessful, it shall be resolved through civil litigation according to law. Avoid excessive behavior.


   16 Q: If the location of the additional elevator exceeds the red line of its own land use, can the plan be approved?


    Answer: According to Article 10 of the “Measures for Adding Elevators for Existing Residential Buildings in Guangzhou”, if the land used exceeds the scope of ownership, it shall require an additional elevator applicant to obtain the written consent of the relevant land use right holder.


    17 Q: Is it feasible to add an elevator solution to the existing city municipal road?


    Answer: According to the basic provisions of the second point of the “Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou”, the addition of elevators shall not encroach on the existing urban road space and shall not affect the implementation of urban planning.


    18 Q: Under what circumstances is the program called the proprietary part?


    A: Adding elevators usually has two flat modes: through the balcony flat-level home mode and through the stairwell half-floor home mode. As shown in Figure 1, the corridor connecting the elevator touches the balcony or the exclusive façade of all the residents, so it is necessary to obtain the same for all the owners. As shown in Figure 2, the additional elevator shaft is connected to the stairwell platform. The additional part involves the owner's common part and does not involve the proprietary part.

19 Q: What should I do if I occupy the proprietary part of the owner?


     Answer: According to Article 5 of the “Measures for Adding Elevators for Existing Residential Buildings in Guangzhou”, if an elevator is occupied to occupy the exclusive part of the owner, it shall obtain the consent of the owner of the exclusive part.


     20 Q: What is the serious occlusion effect?


     A: According to Article 2.1 of the “Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou”, the ladder wells (or corridors) with additional elevator schemes and the windows (bedroom or living room) of the main or adjacent residences in this transportation unit are used. The positive projection distance is less than 6 meters, which can be regarded as severe occlusion. In addition, if the owner changes the layout of the interior of the house by himself, the internal layout of the house construction (acceptance) map or the title certificate shall prevail.

(Intimate Tip: If you are not sure about the serious occlusion situation, you can first entrust the design unit to the site to view)


21 Q: What should I do with severe occlusion?


    A: According to Article 15 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, the written consent of the affected owners should be obtained, or the architectural design plan should be modified to avoid serious occlusion.


22 Q: A building has one ladder and two households, which are divided into two room numbers 01 and 02. The elevator plan is now from the 01 room balcony, and only the 01 room uses the elevator. Two-thirds of the calculations in this case are the stairs of the unit including 01 and 02 rooms or only the consent of the 01 room?


    Answer: According to Article 5, paragraph 3 of the “Glass-added Elevator Method for Existing Residential Buildings in Guangzhou”: “Additional elevators in sub-units do not affect the structural safety of other units in this building. The total area and total number of people referred to in the first paragraph of this Article shall be increased by elevator. Units are calculated independently." Two-thirds of the calculation base is the unit stairs, which includes 01 and 02 rooms. At the same time, all owners of Room 01 need to agree with all owners of Room 01 because they occupy their proprietary parts.

23 Q: The first and second floors of a building are garages and office buildings. Elevators need to be built on the platform of the 3rd floor. The elevator shafts can only be placed on the platform of the 3rd floor. The foundation pits cannot be dug from the first floor. Can I declare an elevator in this case?


    A: It is recommended that the owner ask the elevator company and qualified design unit to conduct on-site investigation and issue a design plan. The design unit evaluates whether the design plan conforms to structural safety and fire safety. If the design plan is feasible, meets various national standards and norms, and does not affect the safety of the building and surrounding houses, it can prepare the information to report to the planning department.


    24 Q: How large should the elevator shaft size be added? Which range cannot be exceeded? How large should the corridor be?


    Answer: According to Article 2.2 of “Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou”, the size of the elevator shaft should not exceed 2.5 meters*2.5 meters, which can be less than this data, but it cannot be exceeded. The net width of the corridor shall not be greater than 1.2 meters or as wide as the elevator shaft. The length of the corridor should not be too long, and the design should be designed in light of the actual situation. In principle, in order to meet the basic traffic demand, it is not allowed to increase the unnecessary building area in the name of adding an elevator.


    25 Q: Are there any special regulations for the elevator shaft to be built as a physical elevator (concrete) or a transparent elevator (steel structure)? Is the transparent elevator not seriously blocked due to the permeability of the ladder well?


    A: The owner chooses the type of elevator material according to the needs of the owner. However, if the elevator is located in the inner patio of the building, it should be set as a transparent elevator as much as possible. According to Article 2.1 of “Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou”, the judgment standards for transparent occlusion and physical elevators are consistent in the application of severe occlusion, and both parties need to obtain written consent from the owners who are seriously obscured.


    26 Q: If the elevator shaft occupies the original passage on the outside of the residential building, what are the requirements for the remaining channel width?


    Answer: According to the requirements of Article 2.2 of “Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou”, it should be ensured that the remaining passage width is only for pedestrian and non-motorized vehicles to be no less than 1.5 meters, and for motor vehicles to pass no less than 4 meters.


    27 Q: Is it possible to make a 4 meter long corridor to meet the needs of motor vehicles?


    Answer: According to the requirements of Article 2.2 of “Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou”, in principle, to meet the basic traffic demand, it is not allowed to increase the unnecessary building area in the name of adding elevators. Under the premise of a better solution, it is not recommended to make a 4 meter long corridor. As shown in the figure, the first scenario corridor is too long, adding unnecessary building area and affecting the urban landscape, it is not recommended. A second or third option is recommended. The second scheme adopts the scheme of transforming the original passage to meet the demand of the 4m fire passage, and the third scheme satisfies the requirement of the remaining passage width by reducing the size of the elevator shaft.

28 Q: What should I do if the design plan involves planning roads, fire safety, etc?


    A: According to the relevant requirements of Article 16 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”, the land planning administrative department will seek the opinions of relevant departments on matters involving the housing and urban construction, public security fire control, quality supervision and other departmental duties.


    29 Q: What should I do if the design involves cultural relics protection?


    Answer: 1. If the installation design of the elevator is located in the construction control zone of the cultural relics protection unit, the owner shall first obtain the consent of the administrative department of cultural relics of the corresponding level according to Article 18 of the Law of the People's Republic of China on the Protection of Cultural Relics.


    2. If the installation design of the elevator is located within the protection scope of the cultural relics protection unit, according to the relevant provisions of Article 17 of the Cultural Relics Protection Law of the People's Republic of China, the owner shall first obtain the consent of the relevant administrative department of cultural relics and report it to the relevant people. Government approval. For example, a residential building located within the protection of the national cultural relics of the Nanyue National Palace Office requires an elevator. The owner must report to the provincial people's government for approval after obtaining the consent of the State Administration of Cultural Heritage (including within the scope of protection of the cultural relic). .


    30 Q: What should I do if the design involves subway protection?


    A: If the installation design of the elevator is located within the scope of the subway rail transit control and protection zone, according to Article 13 of the Guangzhou Urban Rail Transit Management Regulations and the Guangzhou Metro Rail Traffic Control and Protection Zone The relevant owners should first obtain the opinions of Guangzhou Metro Group Co., Ltd.


  31 Q: What are the applicable conditions for installing an elevator?


    A: Applicable to multi-owners without elevators with 4 or more floors that have been legally authorized or legally approved. (See Article 2 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”).


    32 Q: Is it possible to negotiate with the remaining owners if the “two-thirds” requirement is met?


    A: No. Neighbors should respect each other and understand each other. The design of the elevator should be consulted by all owners. All owners need to fully consult and fully consider the opinions of low-rise residents. If there is a big contradiction between the owners, they can go to the neighborhood committee or the street for consultation, or they can use the community discussion platform for coordination.


    33 Q: What are the contents of the negotiation between the owners?


    Answer: 1. Determine the elevator use manager;


    2. The budget for the installation of elevator engineering costs and its fund raising plan;


    3, elevator maintenance and maintenance and maintenance costs sharing plan;


    4. Negotiation with owners who do not agree to install elevators, and fund raising plans for compensation for owners whose interests are damaged;


    5. Laws, regulations, rules and regulations stipulate other matters that should be determined by the owners through consultation. (See Article 7 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”).


    34 Q: What are the funds raised for the need to install an elevator?


    Answer: 1. According to the factors such as the floor, the owner shall jointly contribute according to a certain proportion of the apportionment, and the proportion of the apportionment shall be agreed upon by the co-funded owner;


    2. If it belongs to the house reform room, you can apply for the use of the unit housing maintenance fund;


    3. You can apply for the housing provident fund and special maintenance funds under the name of the owner of the house;


    4. The original property rights unit or the original house sales unit (excluding the budgetary unit of financial allocation) shall contribute capital;


    5. Other legal sources of funds such as social investment. (See Article 8 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”).


    35 Q: What are the principles for the design of an elevator installation?


    Answer: (1) Based on the principle of practicality, strictly control the area of additional construction;


    (2) Minimize the negative impact on the building and surrounding buildings;


    (3) Beautify the landscape as much as possible.


    36 Q: How do you make proof of evidence preservation before the approval?


    A: To ensure the continuity and publicity of the whole process of publicity, daily photo taking and evidence collection during the publicity period must be taken together with the front page of the newspaper.


    37 Q: If the house has reserved the elevator shaft, is it still necessary to apply for a construction project planning permit?


    A: If the original approved drawing has clearly identified the reserved elevator shaft, you can apply directly to the Yuexiu District Market and Quality Supervision Administration for relevant procedures. (See Article 10 of the “Measures for Adding Elevators to Existing Residential Buildings in Guangzhou”).


    38 Q: After applying for the construction project planning permit, if it fails to construct or fails to complete the relevant construction procedures for various reasons, what should I do?


    Answer: The application for extension of the application should be submitted to the administrative department of land planning before the expiration of the validity period of the construction project planning permit. If the extension is approved, the extension period shall not exceed 6 months. (Refer to the Guangzhou Urban and Rural Planning Procedures Regulations (promulgated by Order No. 59 of the Guangzhou Municipal People's Government on October 21, 2011, according to the Guangzhou Municipal People's Government Order No. 132 of September 30, 2015) Adjusting and Amending the Decision of 93 Government Regulations, such as the Regulations on the Administration of County-Level Cities in Guangzhou City, Amendment) (Article 24).


    39 Q: What should I do if I need to adjust the design plan after professional construction management problems such as municipal pipelines, rail transit, and cultural relics protection after applying for the construction project planning permit?


    A: You should apply to the administrative department of land planning for adjustment of the Construction Project Planning Permit and the attached drawings in a timely manner. The modification of the plan needs to re-complete the entire process of the owner's negotiation, and should resubmit the written opinion of the owner agreeing to the design plan and re-issue the pre-approval.


    40 Q: What information is needed to install an elevator to apply for a subsidy?


    answer:


    The information required to install an elevator to apply for a financial subsidy is as follows:


    1. Application form for additional elevator subsidy for existing residences in Yuexiu District


    2. Application form for the increase of the financial subsidy for the existing residential buildings in Yuexiu District


    3. Power of Attorney


    4. Applicant identification


    5, agent identification


    6. The original and photocopy of the "Construction Engineering Planning Permit" (the original is checked at the time of receipt, and returned to the applicant on the spot after verification)


    7. The original and photocopy of the "Elevator Use Registration Certificate" (the original is checked at the time of receipt, and returned to the applicant on the spot after verification)


    8. The original and copy of the owner's contribution plan (the original is checked at the time of receipt, and the applicant is returned to the applicant after verification)


    9. All the real estate licenses agreed to the owner and the copy of the owner's ID card on the apportionment plan


    10. The original and a copy of the formal invoice (the original is checked at the time of receipt, and returned to the applicant on the spot after verification)


    11. Original and photocopy of the low-income and low-income documents (the original is checked at the time of receipt, and returned to the applicant on the spot after verification)


    12. Other certification materials




    41 Q: If the owner dies, what do I need to do to build it?


    A: If the owner dies, it is recommended to apply for the change of the property rights of the inheritance notarization and other housing as soon as possible. After the relevant procedures are completed, the report will be built.


    42 Q: What are the procedures for pipeline migration and septic tank migration? For example, are they related to coal, gas, water and electricity?


    A: In addition to septic tanks, such as coal, gas, water, electricity, etc., must be approved by the relevant departments such as water supply, power supply, gas supply, telecommunications, etc. If the sewer is a municipality, it must be reported to the Municipal Construction Bureau. If it is in the compound, there is no need to declare it. In addition, in the pipeline migration, weak electricity needs to find a professional company, and the septic tank finds qualified companies near the street.


    43 Q: The same person in the elevator preparation data, but has settled in Hong Kong, the name of the Hong Kong identity card is traditional Chinese characters, and the name of the real estate certificate is simplified. Does this meet the standard?


    Answer: Article 4 of the People's Republic of China Identity Card Law stipulates: Resident ID cards are filled in with standardized Chinese characters and numeric symbols that conform to national standards.


    In mainland China, standardized Chinese characters refer to simplified words that have been simplistically simplified and officially published by the state in the form of the Simplified Chinese Character List. If the name can be found in the Simplified Chinese Character List, the traditional Chinese character ID or real estate license cannot be used to make a name in traditional Chinese characters.


    For those who have already applied for Hong Kong identity cards, it is recommended to bring the real estate license and the household registration book and ID card to the local community to prove that the name on the real estate license and the name on the ID card are the same person.


    44 Q: What are the different styles of old buildings and elevators?


    A: At present, the elevators installed in the old buildings mainly have external and embedded.


    The external elevator needs to have a corridor to connect with the elevator, which has high requirements for the space location of the building and fire protection. The advantage of the external elevator is that the elevator has a large space, the use experience is better, and the lighting and ventilation of the corridor are less affected.


    Embedded elevators are usually installed in narrowly located areas and are embedded in buildings with little impact on fire exits. However, due to the limited space location, it is necessary to use non-standard elevators, and it has a greater impact on lighting and ventilation. Therefore, elevators with glass wells are often used.


    45 Q: Is there any charge for the Planning Bureau to produce drawings?


    A: The planning department does not produce drawings. According to the provisions of Article 12 of the “Guangzhou Existing Residential Buildings Adding Elevator Measures”, the existing building has an additional elevator application construction project planning permit, and the applicant should submit the corresponding qualified architectural design. The drawings of the architectural design plan issued by the unit are in duplicate (including the general plan drawn on the 1/500 status map, the floor plans, the elevations, and the sections). Therefore, the drawings should be provided by the architectural design unit, and the expenses should be negotiated by themselves.


    46 Q: In what cases can't I install an elevator?


    A: The Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou stipulates that the design of additional elevators should be based on practical principles. The building area is not included in the floor area ratio. It should not invade the existing urban road space, and should not affect the implementation of urban planning and minimize occupation. In the current situation, greening, minimizing the adverse impact on neighboring buildings and urban landscapes, and avoiding the serious occlusion caused by ventilation, lighting, traffic, etc., which are directly affected by the residential units or adjacent houses in the traffic unit where the elevator is to be added, may not be increased or Disguised increase the use of residential space.


    The definition of severe occlusion is that the elevation of the orthographic projection of the ladder (or corridor) with the additional elevator scheme and the main use room (bedroom or living room) of the residential unit or adjacent residence in the transportation unit is less than 6 meters, which can be regarded as Severe occlusion.


    Fire protection is also an important requirement. The "Technical Regulations for Adding Elevators for Existing Residential Buildings in Guangzhou" stipulates that the architectural design plan for additional elevators should meet the requirements of fire codes in terms of fire separation from adjacent buildings, ensuring access to fire exits and fire engines, and evacuation routes for pedestrians.


    47 Q: Do the owner representatives need to go through the elevator installation procedure in person?


    A: The owner's representative can entrust the elevator company that undertakes the business to report on behalf of the company, so it is not necessary to go through the escalation procedures in person.


    48 Q: Because I lost some of the information when I moved back, I can't get a real estate license?


    Answer: According to the provisions of Article 12 of the “Guangzhou City Existing Elevator Installation Method”, if there is an additional elevator application for construction project planning permit, the exclusive part should be submitted to occupy 2/3 of the total area of the building (unit). The above owners and the owners who account for more than 2/3 of the total number of people agree to the written documents of the elevator and the written opinions of the architectural design plan agreed to be submitted, together with a copy of the immovable property certificate or registration certificate agreeing to add the elevator owner. If you have the above proof, you can report to build an elevator.


    49 Q: What are the sightseeing ladders, what are the advantages and disadvantages?


    A: Steel structure + glass transparent shaft, commonly known as "sightseeing ladder", but not a real sightseeing ladder, but the elevator shaft is transparent, the elevator car is still stainless steel, not transparent, and the outside is not visible in the car.


    advantage:


    (1) It has little effect on daylighting and basically does not affect daylighting;


    (2) The size of the shaft is small, and each direction saves 5~10CM than the concrete shaft;


    (3) The construction period is short, and the impact on the on-site households is small;


    (4) The steel structure material is light, the total weight of the shaft is only 1/5 of the concrete, the settlement is small, the impact on the original building is small, and the geological requirements are low;


    (5) Beautiful appearance and good visual effect.


    Disadvantages:


    (1) If the anti-corrosion treatment is not good, the steel structure is prone to rust;


    (2) After long-term use (about 5 years), regular inspection and maintenance are required;


    (3) Since the exterior glass of the elevator is easy to absorb heat, it is also a disadvantage that the temperature of the car is too high after being heated.


    50 Q: What is a ladder? What are the advantages and disadvantages?


    A: At present, the market is equipped with an ultra-small elevator for the old building.


    advantage:


    (1) Small footprint: less than 3 square meters, which is one-third of the traditional craft, quickly realizes the “Elevator Dream” of the residents, and does not affect the lighting and ventilation of the original building, and has little impact on the lower-level users;


    (2) Short construction time: only the lifting and commissioning time is on site, and on-site lifting and connection can be completed within a few hours, which has less impact on mature community life and residents' safety.


    Disadvantages:


    (1) In pursuit of small size, the steel structure material is generally small, the overall structure is thin; the durability is worrying;


    (2) In pursuit of small size, the safety distance between moving parts is the lower limit of the national standard;


    (3) Under the condition of ultra-small size, many micro-ladders have chosen the backpack-style design. The backpack-style design and the standard traction-type design have great differences in safety, stability and service life; the backpack-style design is a congenital defect. This design was originally only used for villa elevators (below 12 meters), and the old buildings were generally installed in 7 floors or more, 20 to 30 meters.


This article tags: elevators, elevators, elevators, old buildings, elevator installation