1. Because bars are welded in a mat, the bars do not move when concrete is placed, insuring bars are in their proper position.
2. Since welded wire reinforcement (WWR) is prefabricated and welded in plants, the risk of missing a bar is minimized.
3. The chance of improper bending of bars is reduced by using WWR since bending machines bend the mat as a single unit.
4. The use of WWR minimized the chance of misplacement since only one type of mat is used on a given section.
5. Provide the exact size of reinforcement where needed through variable bar size and spacing, thereby reduces steel waste.
6. Any wire size can be used from, starting at W 1.4 up to W 46.5 in increments of 0.1.
7. No site space needed for steel assembly. View example.
8. Faster erection time means you can beat changing weather conditions.
9. Removes reinforcement placement from the critical path.
10. Less field labor needed.
11. The material fabrication is automated.
12. With faster construction, insurance premiums are reduced. For example on bridge deck construction the barrier walls can be constructed faster reducing the time for fall exposure and reducing insurance premium.
13. WWR can reduce construction time, thereby saving: Crane rental time, Equipment leasing Increasing bonus.
14. Lower material cost because not fabricating small bar. For example, for a #3 bar the cost is $5/ 100 wt. while a #6 bar is $1.25/ 100 wt.