Strand Centralizer spacers are provided in the anchor bond zone to separate the strand and provide for the minimum required grout cover around each strand for corrosion protection and bond strength development. The strand centralizer spacers are normally located 30-60 cm above the bottom of the anchor and at the top of the bond zone. The intermediate strand centralizer spacers are typically placed at a distance of 150-300 cm. center to center along the bond zone between the top and bottom spacer