Análise das conformidades do desempenho estrutural de guarda- corpos de acordo com a NBR 15575-4:2013

Abstract

The present work seeks to evaluate two guardrails according to the guidelines of the new performance standard NBR 15575-4:2013, and to qualify the load tests carried out on them in terms of quality and productivity. There has been a great demand for civil works in recent years, but in some cases many works are carried out without inspection and determination of the necessary requirements to obtain the quality of these works, which can harm the final consumer, which is why the new performance standard becomes if necessary. Load tests (horizontal static effort, vertical static effort and impact resistance) for both guardrails were carried out in loco in accordance with NBR 14.718:2000. The results of the deformations resulting from the tests and the design parameters of each guardrail were evaluated in accordance with the guidelines of the performance standard. It can be concluded that both guardrails do not meet the performance standard, presented residual and instantaneous deformations greater than the deformation limits according to the performance standard, in addition to their dimensions being smaller than required by the standard. The horizontal static load tests for both guardrails showed that they were performed with poor quality and low productivity, due to contradictory and unsatisfactory results, lacking greater training of professionals to carry them out.