Answer: To prevent longitudinal deformation of the scaffolding and enhance its overall stiffness.
2.What are the safety regulations when there are external power lines near the scaffolding?
Answer: It is strictly forbidden to erect ramps for ascending and descending the scaffolding on the side where the external power lines are located.
3.Can scaffolding be connected to a material platform?
Answer: No, the material platform should be set up independently.
4.Which types of steel pipes are not allowed for use in scaffolding?
Answer: Steel pipes that are severely corroded, flattened, bent, or cracked.
5.Which types of couplers should not be used?
Answer: Couplers that are cracked, deformed, shrunken, or have stripped threads should not be used.
6.What sign should be displayed on a material platform?
Answer: A load limit sign.
7.What is the general maximum erection height for tube-and-coupler scaffolding?
Answer: It should not exceed 45 meters.
8.Is the statement "When connecting the load-bearing wire rope and the safety wire rope of a gondola, no less than 3 rope clips should be used" correct?
Answer: Incorrect, because the two wire ropes must not be connected to each other.
9.What is the safety requirement during the lifting of an integrated hoisting scaffold?
Answer: Personnel are strictly prohibited from standing on the scaffold body during the lifting process.
10.What are the main safety devices of an integrated hoist?
Answer: Anti-fall devices and anti-overturning devices.
11.What safety protection devices must a gondola be equipped with?
Answer: Brakes, travel limit switches, safety locks, anti-tilting devices, and overload protection devices.
12.What are the requirements for the counterweights of a gondola?
(1) The suspension mechanism or roof trolley of the gondola must be equipped with appropriate counterweights.
(2) Counterweights must be accurately and securely installed at the designated counterweight points. Sufficient counterweight must be configured as per the drawings, and must be verified by a safety officer before use.
(3) The anti-overturning coefficient is the ratio of the counterweight moment to the overturning moment, and this ratio should not be less than 2.
13.How high should the top of the scaffold upright extend above the roof?
Answer: The top of the upright should extend 1 meter above the top of the parapet wall and 1.5 meters above the eave line.
14.Can steel and bamboo be mixed in scaffolding? Why or why not?
Answer: It cannot be used. The basic requirement for scaffolding is that it remains stable without shaking or deforming under load. The nodal points are critical for force transfer. Mixed scaffolding lacks reliable fastening materials, leading to loose joints and deformation of the frame, failing to meet the structural requirements of scaffolding.
15.At which stages should the scaffolding and its foundation be inspected and accepted?
(1) After foundation completion, before scaffolding erection.
(2) Before applying load on the working platform.
(3) After every 6-8 meters of height is completed.
(4) After encountering strong winds of force 6 or heavy rain, and after thawing in cold regions.
(5) After reaching the design height.
(6) After being out of service for more than one month.
16.What protective equipment should personnel working on scaffolding wear?
Answer: Wear safety helmets, fasten safety harnesses, and wear non-slip shoes.
17.Which members are strictly prohibited from being removed during the use of scaffolding?
Answer: (1) The longitudinal and transverse horizontal members, and the longitudinal and transverse sweepers at the main nodes.(2) The tie-ins.
18.What qualifications must personnel working on scaffolding meet?
Answer: Personnel erecting scaffolding must be professional scaffolders qualified according to the current national standard "Management Rules for Safety Technical Assessment of Special Operation Personnel". Personnel on duty should undergo regular physical examinations and can only work upon obtaining a certificate after passing the assessment.
19.According to the "Technical Code for Safety of Tube-and-Coupler Scaffolding in Construction", what are the requirements for the installation of diagonal bracing?
Answer: (1) When the scaffold height exceeds 20 meters, it should be installed continuously on the external facade.
(2) The angle between the diagonal brace and the ground should be 45° to 60°, and the width of the bracing should be 4 to 8 meters.
(3) Diagonal bracing should be fastened to the scaffold uprights using couplers.
(4) If lap joints are used for diagonal braces, the lap length should not be less than 600 mm, and the lap should be secured with 2 couplers.
20.What are the tolerances for the overall vertical and horizontal deviation when erecting tube-and-coupler scaffolding?
Answer: The permissible vertical deviation is 1/600 of the scaffold height and ±50 mm. The permissible horizontal deviation is 1/600 of the scaffold length and ±50 mm.
21.What are the load requirements for masonry scaffolds and decoration scaffolds?
Answer: The load on a masonry scaffold should not exceed 270 kg/m². The load on a decoration scaffold should not exceed 200 kg/m².
22.What anti-slip measures should be taken for A-frame ladders?
Answer: They should have sturdy hinges and chains that limit the opening angle. Anti-slip measures should be taken when used on smooth surfaces.
Post time: 2025-12-15 10:06:07