ACI ITG-5.1M-07 PDF Download

The ACI ITG-5.1M-07 standard is intended for use in regions of high seismic risk or for structures in high seismic performance or design categories. The standard provides guidelines for the use of unbonded post-tensioned precast structural walls, specifically in bearing wall and building frame special reinforced concrete shear wall systems.

The purpose of this standard is to establish the minimum experimental evidence required to ensure the satisfactory performance of unbonded post-tensioned precast structural walls. These walls may not fully meet the prescriptive requirements outlined in Chapter 21 of ACI 318-05. Utilizing the Acceptance Criteria and Commentary provided in this standard allows for coordination with the requirements for special precast structural walls in 21.8 of ACI 318-05.

The standard covers various aspects, including the design procedures for unbonded post-tensioned precast test modules, their configurations, testing protocols, reporting requirements, and assessment of satisfactory performance. The Commentary references provided in this standard offer supplementary documentation to support the acceptance criteria.

It is important to note that the standard does not compare the research results for precast test modules that satisfy ACI 318 with those that meet the Acceptance Criteria but not ACI 318. However, such comparisons, both experimental and analytical, are available in the Commentary references for further understanding.

To provide clarity within the document, the word "Section" is not included before a reference to a section of ACI 318-05, following the format of the ACI 318-05 document. However, when referencing a section within this document, the word "Section" is used to clearly designate it.