ACI 435.8R-85 (R1997) PDF Download

ACI 435.8R-85 (R1997) is a standard that focuses on the observed deflections of reinforced concrete slab systems, with a specific emphasis on understanding the causes of large deflections. The standard is divided into two parts.

Part I of the standard provides a summary of published studies and research on slab deflections. It compiles and analyzes data from various sources to present a comprehensive overview of the factors that contribute to deflections in reinforced concrete slabs. This section serves as a reference for engineers and researchers looking to understand the behavior of slab systems and the various variables that influence deflection.

Part II of the standard focuses on construction problems and material deficiencies that can result in large long-term deflections. It highlights the importance of quality control during construction and identifies potential issues that may lead to excessive deflections over time. This section aims to provide guidance to practitioners in identifying and mitigating these problems to maintain the structural integrity and serviceability of concrete slab systems.