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Architectural, scale 1/4" = 1'-0"

A-501, Enlarged Plans and Interior Elevations

Clearances, fixture tags, interior elevation markers, mounting heights.

The drawing

A-501 Enlarged Plans and Interior Elevations, Millbrook Branch LibraryARCH D sheet, 36 by 24 inches. Drawn at 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0" and 1/4" = 1'-0". Use the layer tray and the measure tool below the drawing.108A109AW4W49101112A-501TOILET1089101112A-501TOILET1099'-0"9'-0"16'-0"1'-6"5'-0" CLR4'-0"2'-6"N04'-0"8'-0"12'-0"16'-0"1/4" = 1'-0"1 ENLARGED TOILET ROOM PLANSClear floor space, hold clear of the door swingMID LANDINGSTAIR 1112ELEVATOR113112A113AW1W1W110'-1"4'-0"12'-0"8'-0"24 risers at 7 in to Level 2MATCH LINE, SEE 1/A-101N04'-0"8'-0"12'-0"16'-0"1/4" = 1'-0"2 ENLARGED STAIR 1 AND ELEVATOR PLAN4A-50110'-0"3'-0"CIRCULATION DESK103N3 ENLARGED CIRCULATION DESK PLAN3'-6"2'-10"3'-0"Casework, see the finish schedule4 CIRCULATION DESK ELEVATION1/4" = 1'-0", wall length 12'-0"10'-0"2'-0"12'-0"W3W35 LOBBY 102 NORTH ELEVATION1/4" = 1'-0", wall length 16'-0"6'-6"Display case, glazed front6 LOBBY 102 EAST ELEVATION1/4" = 1'-0", wall length 16'-0"7'-0"3'-0"102AAcoustic panel7 LOBBY 102 SOUTH ELEVATION1/4" = 1'-0", wall length 16'-0"6'-0"101BPainted gypsum8 LOBBY 102 WEST ELEVATION1/4" = 1'-0", wall length 16'-0"108AS3'-10"Tile to 4'-0"9 TOILET 108 NORTH ELEVATION1/4" = 1'-0", wall length 9'-0"4'-0"4'-0"9'-0"Porcelain tile10 TOILET 108 EAST ELEVATION1/4" = 1'-0", wall length 16'-0"2'-9"1'-5"8'-0"W411 TOILET 108 SOUTH ELEVATION1/4" = 1'-0", wall length 9'-0"2'-9"3'-6"2'-10"3'-4"3'-8"12 TOILET 108 WEST ELEVATION1/4" = 1'-0", wall length 16'-0"NOTES ON THESE ENLARGED VIEWS1. These plans enlarge part of A-101. The building has not changed: the same walls, the same door tags, the same room numbers, drawn twice as large.2. Read the scale before you read a number here. These views are 1/4" = 1'-0", twice the floor plan, so a length that measures one inch is four feet.3. A dashed circle or rectangle is a clearance, not a thing to be built. It is space that has to stay empty when the room is finished and furnished.4. Mounting heights are to the finish floor and are given in the schedule at the right. Where a height is a maximum, holding it lower is acceptable.5. Grab bar blocking runs continuously in the wall behind every bar shown.6. Toilet 109 is a mirror image of Toilet 108. The elevations 9 to 12 apply to both rooms, reversed.MOUNTING HEIGHTS ABOVE THE FINISH FLOORITEMWater closet seat, topGrab bar, centre lineLavatory rim, topTransaction counter, topMirror, bottom of the reflecting surfacePaper towel dispenser, operable partCoat hookLight switch, centre lineHEIGHT17 in33 in34 in34 in40 in44 in48 in46 inNOTEMeasured to the top of the seat, not the rimBoth the side wall bar and the rear wall barKnee space held clear belowAccessible section of the circulation deskMeasured to the reflecting surface, not the frameHighest operable partHighest reach on a clear floor spaceToilet rooms and corridorsTurning circle 5'-0", clear floor space 2'-6" by 4'-0".Both are drawn dashed on the enlarged plans at the fixture they serve.Northgate Design StudioArchitecture and interiorsStructural and civil: Kestrel EngineeringPROJECTMillbrook Branch Library412 Kestrel Avenue, MillbrookMillbrook Public Library DistrictProject number 2026-114ISSUE2026-08-14 Issued for constructionSCALE1/4" = 1'-0"DRAWNNDSCHECKEDQAREVISIONSNODATEDESCRIPTIONSHEET TITLEEnlarged Plans and Interior ElevationsSHEET NUMBERA-501
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Layers on A-501

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12 questions in the bank draw on this sheet.

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How to read this sheet

This sheet exists because a floor plan at 1/8" = 1'-0" cannot hold the information a toilet room needs. Everything on A-501 is a piece of A-101 drawn larger, or a wall of one of those rooms drawn as if you were standing in the room looking at it.

Start with the two enlarged plans. Drawing 1 is the pair of accessible toilet rooms, 108 and 109, and drawing 2 is Stair 1 with the elevator beside it. Both are at 1/4" = 1'-0", which is twice the size of the floor plan, so one inch of paper is four feet of building rather than eight. That single fact changes every measurement you take, and it is the most common mistake made on a sheet like this: a reader carries the scale from the plan sheet and reads everything half size.

On the toilet plans, the dashed shapes are not built. A dashed circle five feet across is the turning circle, the space a wheelchair needs to turn around in, and it has to stay clear of the door swing and of every fixture. The dashed rectangle at the lavatory is a clear floor space, 2'-6" by 4'-0", the piece of floor a person has to be able to occupy to use that fixture. The solid dimension from the side wall to the water closet centre line, 1'-6", locates the fixture itself. Clearance, fixture location and fixture size are three different kinds of number and the drawing distinguishes them for you.

The small circles with four numbers in them are interior elevation markers. Each arm points at a wall and carries the number of the drawing that shows that wall, so the marker in Toilet 108 sends you to drawings 9, 10, 11 and 12 on this same sheet. The marker in the circulation desk plan has one arm, pointing north at drawing 4.

An interior elevation is a straight on view of one wall with the floor as the baseline, and the reason it exists is mounting heights. Every height on drawing 12 is dimensioned from the finish floor: the grab bar at 33 inches to its centre line, the lavatory rim at 34 inches, the bottom of the mirror at 40 inches, the operable part of the towel dispenser at 44 inches. The schedule at the right of the sheet lists the same numbers in one place. Note that these are measured to different parts of different things, a centre line for a bar and a bottom edge for a mirror, which is why the schedule says which part of each item it means.

Read drawing 2 with the stair in mind rather than the room. The two runs and the mid landing between them add up to twenty four risers at 7 inches, which is exactly the 14'-0" from Level 1 to Level 2 on the section. Count risers, never treads, when you are checking a stair against a floor to floor height: there is always one more riser than tread in a run.