1、 Scaffold 1
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What is the role of cross bracing on scaffold? Answer: prevent the longitudinal deformation of the scaffold and enhance the overall stiffness of the scaffold
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2
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What are the safety regulations when there are external power lines outside the scaffold? Answer: it is strictly forbidden to set up ramps for scaffolds on the side with external power lines
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3
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Can the scaffold be connected to the unloading platform? Answer: No, the unloading platform should be set independently
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4
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Which steel pipes are not allowed to be used for scaffold erection? Answer: steel pipe with serious corrosion, flattening, bending and crack
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5
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What kind of fastener should not be used? Answer: any cracks, deformation, shrinkage, sliding wire are not allowed to use
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6
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What signs should be hung on the unloading platform? Answer: the sign of limited load
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7
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How many meters should the erection height of the portal scaffold not exceed? A: it should not exceed 45m
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8
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When the load-bearing wire rope of the hanging basket is extended with the safety wire rope, there should be no less than three rope clamps
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Is this sentence correct? Answer: incorrect, because these two kinds of steel wire ropes can not be extended
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9
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What are the safety requirements of integral lifting frame during lifting? A: no one is allowed to stand on the frame when lifting
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10
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What are the main safety devices of integral hoist? A: anti falling device and anti overturning device
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Past wonderful recommendation: scaffold set up a full set of structural diagrams, it is recommended to collect spare! 11
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What safety protection devices must be equipped for hanging basket scaffold? A: brake, travel limit, safety lock, anti tilt device, overload protection device
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12
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What are the requirements for the counterweight of hanging basket scaffold（ 1) The hanging mechanism of the hanging basket or the roof trolley must be equipped with appropriate counterweight（ 2) The counterweight shall be accurately and firmly installed on the key points, and the counterweight of sufficient quality shall be configured according to the drawing
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Before using the hanging basket, it can only be used after being verified by the safety inspector（ 3) The anti overturning coefficient is equal to the ratio of counterweight moment to forward tilting moment, and the ratio should not be less than 2
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13
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How much should the top of scaffold pole be higher than the roof? A: the top of the vertical pole should be 1m higher than the parapet epithelium and 1.5m higher than the cornice epithelium
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14
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Is the steel and bamboo scaffold available? Why? A: not available
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The basic requirement of scaffold is not to shake, deform and keep stable after overall stress
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The node of the member is the key to transfer the force, but the mixed scaffold, without reliable binding material, causes the node relaxation, and the frame will produce deformation, which can not meet the stress requirements of the foot on the frame
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15
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At which stage should the scaffold and its foundation be inspected and accepted（ 1) After foundation completion and before scaffold erection（ 2) Before the load is applied on the working layer（ 3) After every 10-13m height is erected（ 4) In case of gale and heavy rain, after freezing in cold area（ 5) After reaching the design height（ 6) It has been out of service for more than one month
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16
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What protective equipment should scaffold erection personnel wear? A: wear safety helmet, safety belt and antiskid shoes
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17
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Which members are strictly forbidden to be removed during the use of scaffold（ 1) Longitudinal and transverse horizontal bars, longitudinal and transverse sweeping bars at the main node（ 2) Wall attachment
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18
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What are the necessary conditions for the operators to set up shelves? Answer: the scaffold erector must be a professional scaffolder who has passed the assessment according to the current national standard “management rules for safety technology assessment of special operation personnel”
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The personnel on duty should have regular physical examination, and only those who have passed the examination can work with certificates
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19
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What are the requirements for the setting of cross bracing of portal steel pipe scaffold in the technical code for safety of portal steel pipe scaffold in construction（ 1) When the height of scaffold exceeds 20m, it shall be set continuously outside the scaffold（ 2) The angle between diagonal bar and ground should be 45-60 degrees, and the width of diagonal bar should be 4-8M（ 3) The cross bracing shall be fastened with fasteners and portal frame poles（ 4) If the diagonal bar of cross bracing is lengthened by overlapping, the overlapping length should not be less than 600mm, and the overlapping place should be fastened by two fasteners
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20
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What are the requirements for the deviation of perpendicularity and levelness of the whole scaffold in the erection of portal scaffold? Answer: the allowable deviation of perpendicularity is 1 / 600 of the height of scaffold ± 50mm； The allowable deviation of levelness is 1 / 600 of scaffold length and ± 50mm。 21
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What are the load requirements for masonry frame and decoration frame? Answer: the load of masonry scaffold should not exceed 270Kg / m2, and that of decorative scaffold should not exceed 200kg / m2
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22
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What anti-skid measures should be taken for miter ladders? A: there should be strong hinges and zippers to limit the development, and anti-skid measures should be taken when using on slippery ground
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2、 Foundation pit support 1
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When the depth of foundation pit exceeds how many meters, special support design should be carried out? A: 5m
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2
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What are the regulations on the load at the pit side during the construction of foundation pit? Answer: it is generally required that the height of pit side load shall not exceed 1.5m and the distance shall be greater than 1.2m
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3
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When someone is poisoned in underground construction, how to give first aid? A: the personnel on the well (ground) should never go down to rescue
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They must first supply air downward
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The rescuers must take personal protection measures and send someone to report to the person in charge of the construction site and the relevant health management department
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When the rescue conditions are not available, they should call 119, 110 or 120 for help in time
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4
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What are the factors affecting slope stability（ 1) Influence of soil type（ 2) Due to the influence of soil wetting degree, the slope is easy to lose stability due to the water content in the soil（ 3) The influence of climate makes the soil soft（ 4) The influence of additional load and external force on the slope
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5
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What is the sequence of manual excavation? A: it should be carried out layer by layer from top to bottom, and it is forbidden to use the operation method of hollowing out footings
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At least 1.2m away from the edge and no more than 1.5m in height, soil and materials should be piled up at the edge of ditch and pit
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6
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What are the main causes of collapse accidents in foundation pit excavation（ 1) The slope of foundation pit excavation is not enough（ 2) The top of foundation pit slope is overloaded or vibrated, resulting in landslide（ 3) Incorrect construction method and excavation procedure（ 4) Over elevation excavation（ 5) Incorrect support setting or removal（ 6) Poor drainage measures
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7
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How many meters is the safe distance between machines when digging foundation pit at the same time? A: it should be 10m
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8
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When excavating earthwork, should it be top-down or bottom-up? A: top down excavation
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9
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How much space should be kept for manual excavation? Answer: for manual excavation, the horizontal spacing of operators should be greater than 2m, and the vertical spacing should be greater than 3m
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10
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There are several kinds of slope protection measures commonly used in construction, and there are several forms of pit wall support commonly used? A: in order to ensure the safety of earthwork construction, there are three common slope protection measures: covering method, net drawing method and soil bag slope pressing method
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The common supporting forms of pit wall are lining plate, cantilever, anchor, anchor and diagonal bracing
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11
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What necessary investigation and investigation work should be done before earthwork construction? A: geology, hydrology, underground cables, pipelines and equipment
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3、 “Three treasures”, “four entrances” and “five border” protection 1
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How many meters of building height should be more than, double-layer protective shed should be set up? A: more than 24m
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2
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How many years should seat belts be checked? A: two years
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3
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What do “three treasures” and “four mouths” mean? A: “three treasures” refer to safety helmet, safety belt and safety net“ “Four openings” refers to stairway, elevator wellhead, reserved opening and passageway
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4
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What should be paid attention to when using safely（ 1) The rope length of the safety belt used by the scaffolder is limited to 1.5-2m（ 2) It should be vertical suspended, high suspended and low used; When the suspension is used as a horizontal position, attention should be paid to swing collision; It is not suitable to hang low and use high; The rope should not be tied; So as not to cut the knot after being stressed; The hook shall not be directly hung on the loose objects or on the non-metallic rope to prevent the rope from being cut off.
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