The exterior door threshold is set in a full bed of mastic directly over the concrete roof slab. An asphalt-impregnated joint filler runs through the joint at exterior doors below the threshold assembly. The door frame extends upwards beyond the threshold.
FRAME BEYOND THRESHOLD - SET IN FULL BED OF MASTIC JOINT W/ ASPHALT IMPREGNATED FILLER @ EXTERIOR DOORS E SCALE: 1 1/2" = 1'-0" D1 DOOR THRESHOLD @ ROOF
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