LBR Viewer — Karol Warner / Gilson CBR files

Drop .cbr files here or click to choose them. Several at once is better — that is how you get the LBR-versus-moisture curve.

LBR = corrected unit load at 0.100 in ÷ 800 psi × 100 (FM 5-515 §7.2). CBR against 1000 psi at 0.100 in and 1500 psi at 0.200 in (ASTM D1883). Origin correction is the D1883 tangent method. Loading rate is read from the file's own ET-sec column against FM 5-515 §3.3, 0.05 ± 0.005 in/min.
This viewer reads the machine's file. It does not replace the machine's report, and it is not a substitute for looking at the curve.