top surface historic elevation
UnresolvedNumeric value unresolved
W-415 says the ground-slab elevation suits stone finish; W-201's 83.26 and 93.24 refer to finished approach/landing surfaces, not the P1 concrete top.
Drawing notation: PLAN; P1 (page-left lower slab field); DETAILS OF FRAMING FOR FRONT ENTRANCE STEPS
P1 is a printed slab mark; page-left is a photographic position, not an east/west assignment. The perimeter of this P1 field has not been independently picked or dimensioned.
Drawing notation: 6" SLABS LAID ON GROUND ... ELEV. TO SUIT STONE FINISH
A separate six-inch ground-slab note. Its leader/field has not been proven to denote the marked P1 slab, so six inches is not substituted for P1's scheduled eight inches. The mesh notation between these phrases is not securely transcribed.
Drawing notation: SECTION C-C; 23 TREADS @ 1'-1" = 24'-11"; EL. 83.26; ELEV. 93.24; 4'-0" upper landing
These are finished-stair/landing controls, not a P1 structural-slab elevation or tread/riser profile.