According to the application conditions of the steel grating (bearing value and equipment span), select the type of steel grating from the "Safe Load, Span and Deflection Contact Table". Planning requirements for sidewalks: When the steel grating path is subjected to the planned load, its deformation deflection cannot be greater than 1/00 of the span, and the walkway cannot exceed 10mm. In addition to meeting the above requirements, all paths should meet the following rules, when the planned load value When X1.5, the steel grating will not produce permanent deformation, and when the planned load value is X3.0, the steel grating will not crack. planning requirements. Under the planned load conditions, the deformation deflection at the midpoint of any step cannot be greater than 1/200 of its span and cannot exceed 6 mm. In addition to meeting the above requirements, all step slabs should also meet the following rules: When the planned load value X1.5 , the steel grating will not produce permanent deformation, and when the planned load value X3.0, the steel grating will not crack. According to the nominal width table, the width of the original plate is preferentially selected. In the absence of the original plate width, the number of flat steel Corresponding to the nominal width value, the support length of the two ends of the load flat direction of the steel plate on the support frame shall not be less than 25mmc at each end, the open space of the row of plates: 5-10mm between the steel plates, 10mmd between the steel plate and the adjacent structure, and 300 The minimum width of the steel plate on the path (walkway) in millimeters.
The deck features oval hole slots to channel light and water while retaining tree roots. In order to prevent dust from flying, the garden department has treated the tree ponds of each tree. The tree pond covers are designed to better maintain the air quality of the city, and also need to improve the city's grade. The installation of the cover plate can not only keep the roots of the trees and the green infrastructure, but also increase the urban landscape, which is convenient for cleaning and cleaning. Compared with the original tree pool, the new tree pool and the road are as smooth as the original one, making it easier for citizens to travel Safe, the porosity of the tree pool cover is 20% ~ 30%, which has excellent water permeability and air permeability. After rain, there is no water outside the tree pool, and it will not slip. Under the irradiation of water-permeable materials, the water slowly evaporates. Not only can it regulate the temperature and humidity of the ground, but it also interacts with the atmosphere. Water, air, and heat flowing into urban soils improve environmental systems. The common steel plate in the city is to use steel plate, that is, next to the tree, which is the cover of the tree pool. It is a protective cover for the design and manufacture of stencils. The hollow ratio can reach 90%, which is several times that of cement and cast iron manhole covers.
https://www.topsteelgrating.com/
