Before quoting a steel warehouse price, why do we need to ask our customers about local wind and snow loads?
Before quoting a steel warehouse price, why do we need to ask our customers about local wind and snow loads?
Under normal circumstances, the load sub-factors should be consistent in the appraisal of existing steel warehouse , whether for safety or seismic appraisal.
In fact, due to the omission of the general rules, in the implementation of the actual project of steel warehouse , there may be inconsistencies between the safety appraisal and the seismic appraisal in the values of the load sub-coefficients
Article 4.2.2 of the General Regulations stipulates the basic principles of load bearing capacity calculation for existing buildings, namely:
Paragraph 1: When the safety of the original steel warehouse structure or member is to be appraised for the remainder of the design working life, it shall be verified in accordance with the load code and design specification not lower than that at the time of the original construction; if the original steel warehouse structure or member has been subjected to large deformations or damages related to the permanent and variable loads, the relevant performance indicators shall be verified in accordance with the provisions of the current codes and standards.
Paragraph 2: When the safety of the original steel warehouse structure or member is appraised for the purpose of steel warehouse structural reinforcement, change of use or extension of working life, calculations shall be carried out on the basis of an investigation of the actual loads acting on the structure and the proposed new loads, in accordance with the provisions of the current codes and standards.
Constructed before 2019, in more than the original design working life, or change the use of function, or the existence of should be caused by the force of serious damage needs to be reinforced treatment of existing buildings For this case is relatively more complex, for safety identification, according to the requirements of the General Regulations, should be taken according to the requirements of the current standard, but for seismic identification, due to the General Regulations does not specify, according to other standards and documents, actually Can be implemented according to the original construction standards, which brings a problem, that is, for case three, in the case of conditions allow, whether safety identification or seismic identification, can be taken according to the current standard, but when the conditions do not have, safety identification should be implemented according to the current standard, and seismic identification according to the original construction standards is also feasible. At this time, the safety appraisal and seismic appraisal in the standard value of the load value and the value of the load coefficient is different, this is a problem that we should pay attention to in the actual project.
Star Er is a technology-based construction enterprise committed to promoting scientific and technological innovation to lead future life. We have been specializing in steel construction for more than 10 years.
Our products cover all types of steel structure buildings, including various prefabricated metal warehouse, steel structure workshops, steel structure garages, steel structure poultry houses, steel structure prefabricated houses, etc.
