1 Before scaffold erection, portal frames, connectors and steel bars must be inspected and accepted according to specifications, and unqualified ones are strictly prohibited. 2 Scaffolding site should be cleaned, leveled and compacted, and well drained. 3 Foundation construction shall be carried out according to the construction scheme of portal steel pipe scaffold and safety technical disclosure. On this basis, first pop up the position line of the vertical pole of the portal frame, and the position of the pad and the base should be accurate. 4 incompatible portal frames and accessories shall not be mixed and used on the same scaffold. Gantry installation shall extend from one end to the other, and shall not be carried out relatively. After stepping, check and adjust its levelness and verticality. 5. After the portal frame is installed, bracing, horizontal frame and scaffolding shall be set in time. The locking arm and hook connecting the portal frame and fittings must be locked and locked firmly. The horizontal frame and scaffold board should be set synchronously and continuously, and the scaffold board must be covered and laid tightly, without gaps. Six steel pipes should be added to the bottom of the bottom steel ladder and fixed on the gantry column with fasteners. Handrails should be set on both sides of the steel ladder, and each ladder can cross the portal frame in two or three steps and then turn. 7 railings, set net should be set on the outside of the scaffolding operation layer, the inside of the portal stud. 8 steel bars and bracing should be erected synchronously with scaffolding. The horizontal reinforcing rod should be set on the inner side of the portal frame column, and the bracing should be set on the outer side of the portal frame column and fixed firmly. 9 even the erection of wall parts must be carried out at the same time as the erection of scaffolding, and it is forbidden to lag behind or make up after erection. When the scaffold operation layer is two steps higher than the adjacent wall parts, temporary pulling measures should be taken to ensure stability, and the wall parts can be removed only after the erection is completed. 10 steel bars and even wall parts are connected with portal frames by fasteners, and the specifications of fasteners must match the connecting steel pipes. Fastener bolts shall be tightened with a torque of 50 ~ 60N? M, and shall not be less than 40 Newton? rice. 1 1 Scaffolding or sectional erection must be accepted and delivered after qualified signature.
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