Cast in Place
WWR-400-R-03: Bending Welded Wire Reinforcement 1999, 12 pages
A pictorial and descriptive publication on the fabrication of either in-plant or on-site bending of welded wire for column cages, beam baskets, and shear reinforcement for both cast in place and precast/prestressed structural components.
A Sample Specification for Welded Wire Reinforcement (WWR) 2018, 6 pages
We have had many requests for an example of a Sample Specification that design and construction professionals may review when preparing their own construction documents. This is a sample specification prepared by an engineer with a WRI member producer. (Please review the WRI Disclaimer attached at the end of the document.)
WRI Tech Facts
TF 204-R-14: Welded Wire Reinforced Tilt-up Panels 2014, 5 pages
This Tech Fact is an educational tool for welded wire reinforced tilt-up wall construction.
TF 205-R-03: Welded Wire Fabric in Concrete Pan Joist Slab Construction 2018, 2 pages
An informative publication referencing the advantages of welded wire reinforcement (WWR) in both one-way and two-way pan joist construction. Addresses minimum steel requirements, spacing, design considerations, ACI Building Code specifications, and the use of high strength structural WWR.
TF 206-R-14: Metric Welded Wire Reinforcement Updated 2014
Third Printing 5 pages Converting U.S. Equivalent Customary (in-pound) styles to Metric styles. A discussion and examples of soft conversion technique.
TF 208-R-08: (D) Structural High Strength Welded Wire Reinforcement - Current Product Knowledge 2008, 3rd Printing, 7 pages
This Tech Fact describes current manufacturing abilities, applicable specifications and nomenclature, handling and unloading, placing to obtain proper positioning, coated WWR, and metrication. Tables are included to make it easier for converting units and knowing what common styles are produced and determining areas of steel for various wire spacings.
TF 209-R-08: Design Aids For Structural Welded Wire Reinforcement (includes WWR/Rebar Comparison Tables) 2008, 2nd Printing, 14 pages
This issue contains lists of ASTM & AASHTO Standards that apply to wire and WWR. Also ASTM physical properties for minimum yield and tensile strengths and minimum weld shear strength criteria. There are examples using the included 4 sets of tables. The tables compare various spacings of rebar at 60 ksi yield strength with various spacings of WWR at 60, 70, 75, and 80 ksi yield strengths.
TF 209-R-08M: Metric: Design Aids For Structural Welded Wire Reinforcement (includes WWR/Rebar Comparison Tables) 2008, 2nd Printing, 14 pages
This issue is a metric-centered version of TF 209-R-08.
TF 700-R-07 (WRI/CRSI 81): Design of Slab-on-Ground Foundations- Update included
Original 1981, 36 pages, Update - 8 pages
A design and construction aid specified by many model, local, and state code bodies. It's used by many testing and inspection agencies. It contains material to detail slab-on-ground and supporting concrete structures on soft or expansive soils, prevalent in many parts of the country.
TF 702-R-08: Supports Are Needed for Long-Term Performance of Welded Wire Reinforcement In Slabs-On-Grade Updated 2008, 6 pages
The questions of "why" and "where" supports are necessary are covered in this publication. Types of supports for WWR and the influence of the sub base conditions on their selection are addressed. Suggested spacings of supports are furnished to show the different spacings when wide spaced WWR (step-through styles) is specified vs. the smaller spaced styles.
TF 704-R-03: High Strength Welded Wire Reinforcement Compared with Rebar 1995, 2 pages
This Tech Fact shows an actual distribution facility project that saved considerable costs on the placing of WWR compared with rebar. The high strength WWR saved material costs alone to convince the owner and contractor to use WWR. The contractor's statements give credence to the importance and viability of the use of WWR over rebar in concrete paving, parking lots, and slabs-on-ground.
TF 705-R-03: Innovative Ways to Reinforce Slabs-on-Ground 1996, 8 pages, by Robert B. Anderson, P.E.
There are five design procedures with examples developed by Mr. Anderson, a leading consultant on the subject of reinforced concrete slabs-on-ground. The publication has derivations of equations and design examples that show how as steel area increases more crack width control is gained. The sub grade drag theory is explained here in more detail, emphasizing the procedure for residential and light commercial projects. The other four procedures should be used for various structural applications where wheel loads and rack loads play a greater role in the design of the slab. There is a table of cross-sectional areas and weights for different spacings of wire (from 3" to 16").
WRI Case Studies
CS 194-R-03: Case Study - Multiple Uses, One Project - Jacob's Field, Cleveland Indians Ball Park, Cleveland, Ohio 1994, 4 pages
Examines use of 490 tons of high strength WWR for paving, slabs-on-grade, supported corridor slabs, precast units, and beam shear cages. Value engineering played a big role in saving money and helped construction stay ahead of schedule. Cost savings of $125,000 were realized by reduced forming turnover time and placing time. By using high strength WWR over conventional strength reinforcing, 15% of the material costs were saved.
CS 294-R-03: (D) Case Study - Slabs - Kohl's Corporation Distribution Center, Findley, Ohio 1994, 4 pages
Case history about a 756,000 square foot industrial facility where slabs were placed in less than a month. Fibers were suggested as a substitution to the WWR. The substitution was refused since the owner desired structural integrity if the substrate failed. The result is quality WWR reinforced slabs-on-grade and paving that are free of any settlement and have an exceptional surface quality with minimal intermediate cracks. No curling and displacement are evident at saw cut contraction joints.
CS 298-R-03: Case Study - Tunnel Construction - Washington DC's Metro Tunnel: An Advancement in Concrete Reinforcement 1998, 2 pages
Washington, DC's Metro subway is among the world's highly regarded public transit systems. The 1.1 mile extension of the green line utilizes high strength welded wire reinforcement equivalent to the area of steel of #6 @ 6" as primary reinforcement and #4 @ 16" temperature/shrinkage reinforcement. The welded wire sheets were shipped radius bent.
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