Double row scaffolding, specification

Double row scaffolding specification

A, the erection plan

1, choice of materials and specifications

According to the request of JGJ59-99 standard, set-up, the adoption steel pipe steel pipe size using phi 48 x 3.5 MM, and the use of steel fasteners.

2, the size of the erection of

Set-up total height 2.1 meters, requires set-up, along with the construction progress beyond construction layer of 1.5 m.

2.2 set-up requirements, according to the actual situation, USES the double row scaffolding, frame body upright medial using federated eye network fully enclosed WeiDang construction safety. 3.2 meters tall, authors first floor flat screen, along with the construction schedule set along with the network layer, every 6 meters net between the layers.

2.3 construction requirements

A, stud spacing of 1.5 meters, the vertical bar mat tong long plate (20 cm x 5 cm x 4 cm long pine), using the steel base (1 cm x 15 cm x 8 mm steel plate). Base the middle steel tube core, height is greater than 15 cm. Height from the ground 20 cm sweeping bar set the vertical and horizontal direction. Continuous setting in the inside of the stud, poling extension use docking, staggered, and joint height direction staggered over 50 cm, adjacent joint should not be in the same span. Joint is apart from the main rail junction with stud should not be greater than 50 cm. Can lap top stud, length should not be less than 1 m, two fasteners. Poling vertical deviation and 30 M high, requires no more than 1/200 of the high.

B, big bar

Large bar spacing control in 1.5 M to hang a set net, the ledger in stud on the inside, each side overhanging length should not be less than 10 cm, but should not be greater than 20 cm. Bar extension to docking, contact the distance from the main contact should not be greater than 50 cm.

C, small bar

Small bar on the ledger, extended the ledger is not less than 10 cm in length, small bar spacing: poling and main rail junction must be a small bar, scaffolding, 75 cm, and into the wall not less than 18 cm.

D, bracing

Outside scaffolding at both ends of the corner, and every 6 to 7 middle root (9-15 m) stud should establish a set of scissors. Bracing starting from the basis of continuous set along the scaffold height and width not less than 6 meters, the minimum across different 4, most across different 6, an Angle with the ground: across different 6 across 45 °, 5 across 50 °, 60 ° across different 4. Scissors after long poles need to lap, lap length not less than 1 m, use three fasteners uniform distribution, end from the fastener is not less than 10 cm.

E, scaffolding

Should be put with scaffolding plank, it is forbidden to probe plate, shall not be rugged, and to set up the foot, foot height of 18 cm. Spread from wall less than 10 cm.

2.4 frame buildings with Rachel

Scaffold height above 7 m and each 4 m high, every level of 6 m with strong Rachel buildings, inside and outside with 50 cm steel pipe. And added top bracing to sustain tension and pressure at the same time, ensure the connection between the frame and building strong, do not shake, do not collapse.

Drainage measures: 2.5 ascend a can not have water, and drain.

Second, the scaffolding acceptance

1, outside the scaffold must be certified personnel set-up, with the increasing of floor to check one by one and piecewise acceptance, height 9 m acceptance once, should do not conform to the requirements of rapid improvement.

2, scaffold outside the segmented acceptance should press JGJ59-99 "outside the scaffold inspection assessment" listed in the project and the content of the construction plan for inspection, fill in the inspection record sheet, set-up personnel, and has a security officer, the builder, project manager, in order to delivery.

3, must have a quantitative acceptance of the content.

Three, scaffolding, labor arrangement

1, according to the number of project size and external scaffold erection of personnel, a clear division of labor and technical clarificaiton.

2, must be established by the project manager, the builder of set-up technology, safety personnel, personnel management institution, the build-up to the project manager responsible for, command, deployment, check the direct responsibility.

3, external scaffolding set-up and dismantling of must be equipped with enough support staff and the necessary tools.

Four, scaffolding, safety technical measures

1, outside scaffolding poling based lateral should dig drainage, in case of rain water foundation.

2, external scaffolding set-up in distance may not be within the safe distance of overhead line, and make reliable grounding.

3, scaffolding must timely maintenance, strong stability, in order to achieve to ensure construction safety.

4, bamboo scaffold outside the forbidden steel, steel-wood mix build, forbidden to buckle, rope, wire, bamboo mixed breeds contempt.

5, external scaffolding, personnel must hold relevant certificates, and the correct use of helmets, safety nets, wearing non-slip shoes.

6, strictly control the construction load, scaffolding shall not be concentrated feed, construction load shall not be greater than 2 kn/M2.

7, control fastener bolt tightening torque, using torque wrench, torque control in 40-50 n. M range.

8, it is strictly prohibited to scaffolding probe plate, laying scaffold board and multiple operations, should try to make the construction load transfer balance inside and outside.

9, to ensure the integrity of the scaffold and shall not be Rachel, along with the derrick, and tower crane shall not truncate the frame body.

Five, the scaffolding demolition of safety technical measures

Hurt before, hand comprehensive review intends to hurt his feet.