During loading, unloading and transportation, parts should be protected as far as possible to avoid damage during transportation.

For some secondary components such as purlins, supports, corner supports, etc., due to its small stiffness, quantity, in the process of transportation should be packed, no bulk goods, resulting in shipment chaos.

(3) The components to be transported must be shipped in accordance with the lifting requirements, and supporting supplies should be considered as far as possible to ensure the smooth lifting on site.

The lattice columns shall be placed symmetrically on the transport vehicle and shall be operated symmetrically when loading and unloading the vehicle to ensure that the body and vehicle components are fixed.

(5) The secondary components and the main components are transported together, and the secondary components should not be stacked together, resulting in compression deformation of the components.

(6) when the member is transported, the pad should be placed. When the member is fixed with the wire rope, the four corners should be protected to prevent the member from deformation and cutting the wire rope. For the unstable member, the support should be used to stabilize it.

2. Stack components

(1) The stacking site for lattice columns should be flat, with a firm base and no weeds or water.

(2) the component stack should use stow-wood, stow-wood must be aligned from top to bottom, each pile component stacking height should grasp, respectively, according to the component situation general component and the secondary components (the support beams, purlin, wall, etc.) should not be more than 1 m, appropriate USES single pile, large and medium-sized main components such as truss plane stiffness of component, generally USES the vertical pile, pile is generally a combination of five or so, Between each assembly should be placed a cushion wood.

(3) There should be a distance between each pile of members and members (generally 2 meters).

(4) If the site allows, the components can be stacked near the lifting position according to their lifting sequence and installation position, on the premise of ensuring the smooth movement of lifting machinery and transport vehicles. Member numbers should be placed prominently at both ends so that members can be found during hoisting.

3. Retest the positioning axis and leveling point

(1) The positioning axis provided by the foundation construction unit or the construction unit shall be handed over, checked, recorded, marked and protected jointly by the construction unit, supervision unit, civil construction unit, foundation construction unit and other relevant units.

(2) According to the level point provided by the construction party (level 2 or above), use the leveling meter for closed measurement, and set the level point in the nearby building should not be damaged, or can be set in the building, but in the case of keeping the line of sight, should be protected.

4. Component labeling

Before lifting, the center line and elevation line of the lattice column should be marked, and the installation direction of the asymmetric components should be marked. The center of gravity and hanging point of the large components should be marked. When marking, the paint with different colors of the components can be marked, so as to be clear, accurate and eye-catching. Is the following:

5. Hoisting machinery

The project uses an automatic crane. Vehicle crane hoisting mechanism and the rotary table are installed in heavy duty truck chassis or special purpose vehicle chassis, chassis is equipped with four legs on both sides, in order to increase the stability of the crane, box structure made of telescopic lifting arm, can quickly and easily slack adjusters frame length, with motor performance is good, fast, can't manned, sites require higher characteristic, Mainly used for component loading and unloading and single-layer steel structure hoisting.

6. Simple lifting mechanism

Lattice column lifting is generally used when the site conditions permit, but due to the site conditions and lifting weight and other factors, according to the actual situation of the site, the mast lifting device, jack, hoist, portable hoist and other simple lifting tools can be selected.