STRAND PATTERN

The strand pattern for the 36 strands at midspan is shown in Figure 15, NU-1600 Girder, on page 18. Each available position was filled beginning with the bottom row.

FIGURE 17. Strand Pattern at Midspan

The distance between the center of gravity of strands and the bottom concrete fiber of the beam is:

y_{b s} = \frac{(18 (50) + 18 (100)}{36} = 75 m m

Strand eccentricity at midspan is:

y_{b s} = y_{b} - y_{b s} = 722 - 75 = 647 m m