Galvanized Walkway Grating: Weight, Placement and Transportation

How to Calculate the Weight of Galvanized Walkway Grating After Galvanizing?

Hot-dipped Galvanized Walkway Grating

For standard steel gratings that have undergone hot-dip galvanizing without any additional processing, the weight increase of the grating is calculated at 1.08 times the original weight.

Cold-dipped Galvanized Walkway Grating

Cold-dip galvanizing merely results in a thin layer of zinc ions covering the surface of the steel grating. These ions are very lightweight, and if weighed, the weight remains unchanged. Therefore, the original weight is used for calculation.

Galvanized Walkway Grating with Edge Binding

Some steel gratings are edge-bound and hot-dip galvanized. How is the weight calculated in such cases?

The weight increases after edge binding and hot-dip galvanizing, and the weight increase varies for gratings of different specifications. For example, for common specifications of flat steel with a 30mm spacing, the weight increases by approximately 12%, while for gratings with a 40mm spacing, the weight increases by approximately 14%.

Placement of Galvanized Walkway Grating After Galvanizing

After galvanizing, at least three supports are required for hot-dipped galvanized walkway grating, with one at each end and one in the middle. Placing supports only at the ends can cause deformation in the middle if there is excessive load on the grating. It is essential to maintain the overall level of the grating. If not securely placed during transportation due to uneven roads, the grating can be subjected to pressure and impacts, potentially leading to bending of the flat steel.

The installation of galvanized walkway grating should be robust to prevent falling. Therefore, welding is the preferred method of installation. For mobile and modular grating, common installation clamps must be used to ensure stability. The number and method of installation must be precise to avoid any displacement of components.

Using grating to construct a steel structural building system can promote the widespread application of other “energy-efficient and environmentally friendly” building materials. The load-bearing capacity is a primary concern when selecting galvanized walkway grating, and the load-bearing capacity is closely related to the grating span.

Precautions for Transporting Galvanized Walkway Grating

After production, galvanized walkway grating needs to be securely packed and bound. Typically, domestically sold hot-dip galvanized steel gratings have wooden blocks placed at the bottom, and nylon or flat iron straps are used for tight bundling. For exported hot-dip galvanized steel gratings, wooden blocks may carry the risk of insect infestation, so channel steel or other iron products are used at the bottom to prevent deformation caused by the movement or impact during transportation due to vehicle or ship vibrations.

When bundling hot-dip galvanized walkway gratings, grating panels of the same specifications should be neatly stacked together, with the side bearing labels or steel imprints facing outward for easy inspection. When using bundling straps, ensure that straps are placed on all four sides.

Irregularly shaped hot-dip galvanized steel gratings should be purposefully stacked to minimize movement and collisions.

When loading or unloading hot-dip galvanized walkway gratings using forklifts or cranes, care should be taken to prevent the front teeth of the forklift from hitting the outer flat steel of the gratings, causing severe deformation or premature rusting of the galvanized layer.

When using cranes for lifting, flexible lifting straps should be used wherever possible. If steel wire ropes are used for lifting, attention should be paid to placing washers at the points where the steel wire ropes experience the most stress to prevent deformation or damage to the outermost part of the hot-dip galvanized walkway grating.

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