f6-f7-stair-e-upper-diagnostic-placementverified · calculated
W226 Stair E sixth-floor local datum
67.0 ft local (160.25 - 93.25)67 ft
W226 regional Stair E datum converted to the project first-floor local datum.
IMG_1118 · sheet-W226 · Locate on drawing ↗Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
IMG_1122 · sheet-W228 · Locate on drawing ↗Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-sixth-floor-finish-elevation, w226-first-floor-finish-elevation
f6-f7-stair-e-upper-diagnostic-placementverified · calculated
W226 Stair E seventh-floor local datum
80.0 ft local (173.25 - 93.25)80 ft
Regional Stair E datum; 1.5 feet above the current generic Main/sixth-elevation level-7 plane and 0.5 feet below the Madison regional reference.
IMG_1118 · sheet-W226 · Locate on drawing ↗Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
IMG_1122 · sheet-W228 · Locate on drawing ↗Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-seventh-floor-finish-elevation, w226-first-floor-finish-elevation
f6-f7-stair-e-upper-diagnostic-placementunreviewed · calculated
Level-6-to-regional-level-7 diagnostic riser height
7.0909 in (13 ft / 22)0.590909 ft
Uses the 22-riser seventh-floor down count. The sixth-floor up-20 count is retained as the ordinary-flight count; W228's two-riser landing is a candidate reconciliation only.
IMG_1118 · sheet-W226 · Locate on drawing ↗Drawing notation: 2ND, 3RD, 4TH, 5TH & 6TH FLOOR PLANS / 7TH FLOOR PLAN / 7'-10 1/2" / DOWN 20 RISERS / UP 20 RISERS / DOWN 22 RISERS / UP 20 RISERS
Upper-story plan and datum controls; no metric X/Z transform is accepted.
IMG_1122 · sheet-W228 · Locate on drawing ↗Drawing notation: TYPICAL SECTION OF LANDINGS WHERE TWO RISERS OCCUR / ELEVATION WHERE TWO RISERS OCCUR IN LANDING
Candidate two-riser landing construction only; storey applicability is not printed.
Calculated from: w226-f6-f7-vertical-interval, w226-seventh-down-riser-count