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 Figure 4-4. Glulam arches with rating 60. (A) Evidence of localized decay
at concrete abutment indicated by the area adjacent to the
concrete abutment.
Figure 4-4.
(B) Dark area is evidence of localized decay at the top of the
metal collar.
Figure 4-4.
(C) Area of localized decay is easily probed with a
screwdriver at the base of an arch.
4-10
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