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Title: 440.7R-10 Guide for Design & Constr of Externally Bonded FRP Systems for Strengthening Unreinforced Masonry Structures
Author: ACI Committee 440
Year of Publication: 2010
Number of Pages: 46
This document is: Active
Nonmember Price: $72.50
ACI Member Price: $44.00
Order Code: 440710
Abstract: Click here to view the first few pages of this publication - pdf file format
Fiber-reinforced polymer (FRP) systems are an option to consider for strengthening unreinforced masonry (URM) structures. Traditional strengthening systems include external steel plates, reinforced concrete (RC) overlays, span shortening with steel subframing or bracing, and internal steel reinforcement. Relative to traditional systems, features of FRP systems include high tensile strength, light weight, ease of construction, and resistance to corrosion. This guide offers general information on FRP systems use, a description of their unique material properties, and recommendations for the design, construction, and inspection of FRP systems for strengthening URM structures. These guidelines are based on knowledge gained from a comprehensive review of experimental and analytical investigations and field applications. Keywords: buildings; cracking; cyclic loading; detailing; earthquake resistance; fiber-reinforced polymers; fibers; flexure; masonry; shear; structural analysis;structural design; unreinforced.
Contents: Chapter 1—Introduction and scope, p. 440.7R-2 1.1—Introduction 1.2—Scope Chapter 2—Notation and definitions, p. 440.7R-3 2.1—Notation 2.2—Definitions Chapter 3—Constituent materials and properties, p. 440.7R-6 3.1—Constituent materials 3.2—Physical properties 3.3—Mechanical properties 3.4—Time-dependent behavior 3.5—Durability 3.6—Fiber-reinforced polymer system qualification Chapter 4—Shipping, storage, and handling, p. 440.7R-9 4.1—Shipping 4.2—Storage 4.3—Handling Chapter 5—Installation, p. 440.7R-10 5.1—Contractor competency 5.2—Temperature, humidity, and moisture considerations 5.3—Equipment 5.4—Substrate repair and surface preparation 5.5—Resin mixing 5.6—Application of constituent materials 5.7—Alignment of FRP materials 5.8—Multiple plies and lap splice 5.9—Resins curing 5.10—Temporary protection acceptance, p. 440.7R-12 Chapter 6—Inspection, evaluation, and acceptance, p. 440.7R-12 6.1—Inspection 6.2—Evaluation and acceptance Chapter 7—Maintenance and repair, p. 440.7R-14 7.1—General 7.2—Inspection and assessment 7.3—Repair of strengthening system 7.4—Repair of surface coating Chapter 8—General design considerations, p. 440.7R-14 8.1—Design philosophy 8.2—Strengthening limits 8.3—Design material properties 8.4—Effective strain and stress in the FRP reinforcement at the strength limit state Chapter 9—Wall strength for out-of-plane-loads, p. 440.7R-16 9.1—Background information 9.2—General considerations 9.3—Existing wall strength 9.4—Nominal flexural strength of FRP-reinforced masonry walls subjected to out-of-plane loads 9.5—Serviceability 9.6—Creep rupture stress limits Chapter 10—Wall strengthening for in-plane-loads, p. 440.7R-20 10.1—Background information 10.2—General considerations 10.3—Existing wall strength 10.4—Nominal shear strength of FRP-reinforced masonry walls subjected to in-plane loads 10.5—Nominal flexural strength of FRP-reinforced walls subjected to in-plane loads 10.6—Wall strengthening for shear and flexure Chapter 11—Detailing, p. 440.7R-25 11.1—General requirements 11.2—Fiber-reinforced polymer debonding 11.3—Spacing limits 11.4—Anchorages of FRP reinforcement 11.5—Alternate forms of anchoring 11.6—Load path continuity Chapter 12—Drawings, specifications, and submittals, p. 440.7R-28 12.1—Engineering requirements 12.2—Drawings and specifications 12.3—Submittals Chapter 13—Design examples, p. 440.7R-29 13.1—Increasing the flexural capacity of a wall subjected to out-of-plane loads 13.2—Increasing the lateral capacity of a wall subjected to in-plane loads Chapter 14—References, p. 440.7R-43 14.1—Referenced standards and reports 14.2—Cited references
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