Northwest Rooms Upper Breezeway Design Improvements

NORTHWEST ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS

Revised Certificate of Approval Application

305 Harrison St. Seattle, WA 98109

September 4, 2020

DLR Group 51 University Street, Suite 600 Seattle, WA 98108 www.dlrgroup.com t 206.461.6000

Table of Contents

Section 1 1 Cover Sheet 2 Project Information 3 Comparative Tabulation of Scope of Work Section 2 4 Existing Site Plan 5 Existing Conditions 7 Floor Plans - Demo & Proposed 8 Reflected Ceiling Plans - Demo & Proposed 9 North Elevations - Demo & Proposed 10 South Elevations - Demo & Proposed 11 N-S Building Section - Demo & Proposed 12 N-S Building Section - Demo & Proposed 13 Partial Enlarged Elevation - Proposed 14 Partial Enlarged Building Section - Proposed 15 Exterior Details - Proposed Section 3 18 NW View - Existing 19 NW View - Proposed 20 SE View - Existing 21 SE View - Proposed 22 Materials and Finishes Section 4 24 Lighting - Location of Fixtures 25 Lighting - Fixtures

9.4.2020 | 1 SECTION 1 | PROJECT INFORMATION

DESCRIPTION GOALS The Northwest Rooms Breezeway is one of two entrances to the Seattle Center De-clutter and simplify breezeway campus from the corner of West Republican Street and Warren Ave. N. • Remove recent alterations and additions in favor of Thiry’s original mid-century modernist design. The current breezeway configuration was created in the early 1990s by demolishing a portion of the adjacent structure, the Nisqually Room and enlarging a small, existing breezeway. As a part of the same project, swooping canopies, neon lights, skylights, new paving, aluminum wall cladding, and ticket and concession spaces were constructed. Over the years, the breezeway space has deteriorated and the 1990s improvements have become worn and dated. Create legible pathways with a strong sense of direction • Invite pedestrians into the heart of Seattle Center through visual access to key In 2016 the Board has approved a Certificate of Approval application for then attractions. Proposed Scope of Work. The current 2020 application is seeking Revised Certificate of Approval for Revised Scope of Work. Comparative Tabulation of Scope of Work compares 2016 approved with 2020 revised scope of work including a separate column for identified differences between them. See page three for comparative tabulation of scope of work. Celebrate arrival to Seattle Center • Provide an enlivened, welcoming entry to the campus with an inviting atmosphere that will serve as a vibrant backdrop for artistic expression during events and festivals.

Reach out to the neighborhood • Increase the visual and spatial permeability of Seattle Center’s edge at Republican St and Warren Ave N by creating a welcoming and active edge with greater visual hierarchy.

Integrate sustainable features • Provide opportunities for landscaping. Use practical, robust materials that will be easy to maintain for the life of the project. Utilize energy efficient lighting.

2 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application COMPARATIVE TABULATION OF SCOPE OF WORK | SECTION 1

Original Scope of Work Revised Scope of Work Change in Scope of Work As Proposed and Approved in 2016 Current 2020 C of A Application between 2016 to 2020 Demolish most of the non-historic elements added in the Demolish most of the non-historic elements added in the No change 1990s breezeway renovation. 1990s breezeway renovation.

Restore and highlight the character defining elements Restore and highlight the character defining elements from the original 1962 structure, such as the steel from the original 1962 structure, such as the steel No change trusses, concrete columns, ribbed roof deck, and square trusses, concrete columns, ribbed roof deck, and square lights. lights.

Same idea different layout: No planter, 2 sets of stairs, Reconfigure the existing ramps and stairs that Reconfigure the existing ramps and stairs that 1 wider accessible ramp – ramp doubles as occasional accommodate the grade change within the breezeway. accommodate the grade change within the breezeway. truck access

Replace the existing galvanized handrails with high Replace the existing galvanized handrails with high To match anodized aluminum handrails proposed quality, stainless steel handrails. quality, anodized aluminum handrails. throughout Climate Pledge Arena

Remove existing spherical concrete bollards and replace Remove existing spherical concrete bollards and replace No change with stainless steel bollards. with stainless steel bollards.

Replace existing bird netting with less visually obtrusive Replace existing bird netting with less visually obtrusive No change bird control devices. bird control devices.

New smooth, broom and medium sandblast finishes Grind the surface of existing and new concrete paving to All concrete surfaces to be replaced with new cast-in- new concrete surfaces — to match concrete finishes at provide a higher quality surface finish. place concrete to provide a higher quality surface finish. adjacent courtyard.

Replace existing aluminum composite wall panels with Replace existing aluminum composite wall panels with No change durable metal panels. durable metal panels.

Brightly illuminate the area beneath the breezeway roof. Brightly illuminate the area beneath the breezeway roof. Same concept but no spotlights

Add access ladder and roof access hatch. New room omitted. New access ladder, roof hatch and New room on the west side to house existing mechanical Add metal cabinet for electrical panels. new electrical cabinet enclosure. All exposed, metal, & electrical equipment, plus access to roof. secured & integrated

Replace 3 existing skylights with 3 new skylights in No new or replacement skylight work. Existing skylights (total of 3) to remain. different configuration.

New landscaped planter No planter. No planter proposed.

9.4.2020 | 3 SECTION 2 | EXISTING SITE MAP

A WEST REPUBLICAN ST. AREA OF WORK H G F

I storage VERA Project KEXP SIFF storage E C

D B

Dupen Fountain 1ST AVE. NORTH AVE. 1ST

Key Arena

4 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application EXISTING CONDITIONS | SECTION 2

A View from Republican Street

B View from NW Courtyard

9.4.2020 | 5 SECTION 2 | EXISTING CONDITIONS

C VERA Project

Existing Metal Panels, similar to panels specified in the Breezeway

D KEXP Building G I

6 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application FLOOR PLANS - DEMO AND PROPOSED | SECTION 2

35 34 P8 33 32 31 P6 30 29 P9 28 27 35 34 P8 33 32 31 P6 30 29 P9 28 27

EDGE OF ROOF (ABOVE) DOWNSPOUT (E) 1 OF 5 DEMO BOLLARD COLUMN (E)

A A

DEMO STAIRS, BOLLARD, TYP 1 OF 8 HANDRAIL & TRENCH DRAIN B B

DEMO ROOM UP UP UP C C TRENCH DRAIN DEMO STAIRS & HANDRAIL

SLOPE UP SLOPE RAMP UP UP SLOPE UP UP UP D D DEMO TRENCH DRAIN TRENCH DRAIN

E E ELECTRICAL PANELS DEMO CONCRETE CURB TO REMAIN RAMP UP DEMO ROOM F F

ROOF ACCESS LADDER

G G

H H DEMO BOLLARD, TYP 1 OF 2

COLUMN (E) EDGE OF ROOF ABOVE P7 EDGE OF ROOF ABOVE P7

FLOOR PLAN - DEMO FLOOR PLAN 1 2 NOT TO SCALE NOT TO SCALE

9.4.2020 | 7 SECTION 2 | REFLECTED CEILING PLANS - DEMO AND PROPOSED

35 34 P8 33 32 31 P6 30 29 P9 28 27 35 34 P8 33 32 31 P6 30 29 P9 28 27

SURFACE-MOUNTED LIGHT FIXTURE, TYP. 1 OF 20 REMOVE LOWER SWOOP CANOPIES

A A

B B

C C

D D UTILITY PIPING (TO REMAIN)

E E

LED FIXTURE MOUNTED TO EACH SIDE OF TRUSS, TYP. F F

ROOF HATCH G G

H H

P7 P7

REFLECTED CEILING PLAN - DEMO REFLECTED CEILING PLAN 1 2 NOT TO SCALE NOT TO SCALE

8 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application NORTH ELEVATION | SECTION 2

27 28 P8 29 30 31 32 33 P9 34 35

DEMO CANOPIES, TYP.

DEMO BOLLARDS, TYP.

NORTH ELEVATION - DEMO 1 NOT TO SCALE

27 28 P8 29 30 31 32 33 P9 34 35

EXISTING PRECAST NEW STAINLESS CONCRETE PANEL STEEL BOLLARDS, TYP. EXISTING PRECAST CONCRETE PANEL

NORTH ELEVATION 2 NOT TO SCALE

9.4.2020 | 9 SECTION 2 | SOUTH ELEVATION

36 35 34 P8 33 32 31 30 29 P9 28 27

DEMO BOLLARDS, TYP.

SOUTH ELEVATION - DEMO 1 NOT TO SCALE

36 35 34 P8 33 32 31 30 29 P9 28 27

SOUTH ELEVATION 2 NOT TO SCALE

10 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application N-S SECTION LOOKING WEST | SECTION 2

H G F E D C B A

DEMO CANOPIES

DEMO BIRD NET DEMO METAL PANELS, TYP. DEMO HANDRAILS

DEMO RAMP CURBS

NORTH-SOUTH SECTION LOOKING WEST - DEMO 1 NOT TO SCALE

H G F E D P10 C B A

NEW LADDER AND ROOF HATCH

EXISTING PRECAST CONCRETE PANEL

NEW LADDER COVER (E) DOOR TO REMAIN 1’ X 10’ METAL PANELS, TYP. NEW ANODIZED ALUMINUM HANDRAIL, TYP. NEW STAINLESS STEEL BOLLARDS, TYP. 1 OF 8 (E) DOOR TO REMAIN NEW ELECTRICAL CABINET

NORTH-SOUTH SECTION LOOKING WEST 2 NOT TO SCALE

9.4.2020 | 11 SECTION 2 | N-S SECTION LOOKING EAST

A B C D E F G H

DEMO METAL (E) PRECAST CONCRETE PANEL DEMO CANOPIES PANELS, TYP. DEMO BIRD NET

DEMO RAMP CURBS

NORTH-SOUTH SECTION LOOKING EAST - DEMO 1 NOT TO SCALE

P11 A B C D E F G H

NEW LED FIXTURES

(E) PRECAST 1’ X 10’ METAL PANELS, TYP. CONCRETE PANEL NEW ANODIZED ALUMINUM (E) DOOR TO REMAIN HANDRAIL, TYP. NEW STAINLESS STEEL BOLLARDS, TYP. 1 OF 8

NORTH-SOUTH SECTION LOOKING EAST 2 NOT TO SCALE

12 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application ENLARGED SECTION | SECTION 2

D C B A

P12 3

P12 1’ X 10’ METAL PANELS, TYP. P12 4 1’-0” 6

P12 5 NEW ANODIZED ALUMINUM HANDRAIL, TYP. P12 1

ENLARGED NORTH-SOUTH SECTION 1 NOT TO SCALE

9.4.2020 | 13 SECTION 2 | ENLARGED SECTION

A B C D

P12 3

P12 1’ X 10’ METAL PANELS, TYP. P12 4 6 1’-0”

P12 NEW ANODIZED ALUMINUM 5 HANDRAIL, TYP.

P12 1

ENLARGED NORTH-SOUTH SECTION 1 NOT TO SCALE

14 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application DETAILS | SECTION 2

CLADDING WALL HEAD DETAIL 3 NOT TO SCALE

CLADDING WALL SILL DETAIL - NORTH 1 NOT TO SCALE CLADDING DOOR HEAD DETAIL 4 NOT TO SCALE

CLADDING DOOR JAMB 5 NOT TO SCALE

CLADDING WALL SILL DETAIL - SOUTH CLADDING EDGE N-S SECTION THROUGH ROOF HATCH 2 6 7 NOT TO SCALE NOT TO SCALE NOT TO SCALE

9.4.2020 | 15 SECTION 2 | DETAILS

STAIR & HANDRAIL DETAIL - WEST STAIR & HANDRAIL DETAIL - EAST 1 2 NOT TO SCALE NOT TO SCALE

RAMP DETAIL 3 NOT TO SCALE

16 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application DETAILS | SECTION 2

BREEZEWAY FLOOR TERMINATION - SOUTH BREEZEWAY FLOOR TERMINATION - NORTH 1 2 NOT TO SCALE NOT TO SCALE

9.4.2020 | 17 SECTION 3 | NORTHWEST VIEW - EXISTING

1 3 2 4

1 Trespa Panel 2 Spherical Concrete Bollards 3 Galvanized Handrails 4 Cast-in-place Concrete

18 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application NORTHWEST VIEW - PROPOSED | SECTION 3

EXISTING COLUMNS TO BE PATCHED AND REPAINTED TO MATCH ORIGINAL GRAY COLOR.

1 1

2 4 2

DOWNSPOUT GUARDS, COLOR BLACK

COLUMN GUARDS, COLOR BLACK, TYP.

1 Nu-Ray Metal Panel Cladding 2 Stainless Steel Bollards - Site Security 3 Anodized Aluminum Handrails 4 Cast-in-place Concrete

9.4.2020 | 19 SECTION 3 | SOUTHEAST VIEW - EXISTING

1 Trespa Panel 2 Spherical Concrete Bollards 3 Galvanized Handrails 4 Cast-in-place Concrete

20 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application SOUTHEAST VIEW - PROPOSED | SECTION 3

1 1 7 3 6

EXISTING COLUMNS TO BE PATCHED AND 8 REPAINTED TO MATCH ORIGINAL GRAY COLOR.

1 Nu-Ray Metal Panel Cladding 2 Stainless Steel Bollards - Site Security 3 Anodized Aluminum Handrails 4 Cast-in-place Concrete

5 Roof Hatch 6 Ladder Cover 7 Electrical Cabinet Enclosure 8 Trench Drain Grates

9.4.2020 | 21 SECTION 3 | MATERIALS AND FINISHES

1 Metal Panel Cladding 2 Bollards - Site Security 3 Railings 4 Cast-in-place Concrete with Sawcut Joints

Manufacturer/Product: Nu-Ray, NRM-8000 Manufacturer/Product: Gibralter (Basis of Design) Function: Handrail Material: Cast-in-place (CIP) Concrete Description: Flush mount panel, concealed fastener Types: Fixed Shallow Mount & Automated Deployable Material: Aluminum Breezeway walkway - Typical Topping Slab Application: Vertical - 12” wide panel, DW-1, 1 3/4” Material: Heavy steel, concrete fill Finish: Anodized Finishes - see below depth Diameter: 8 inches Size: 1 1/2” diameter tube Walkways/paving: Broom finish - Type 1 Surface: Smooth Finish: A316 Stainless Steel Note: Mitered and welded corners, eased edges, South Trench Drain: Medium Sandblast finish - Type 2 Finish: Standard Kyanr 500 ULTRA-Cool Products: G-1150 (Shallow fixed) & G1161D grinded welds Curbs: Smooth finish - Type 3, Paint Grey (to match Thickness: 18 gauge (Operable) existing) Color: Regal White Cap: Flat plate Stair risers: Smooth finish - Type 3 Note: Similar to metal panels used at KEXP Function: Barrier to provide anti-ram protection Stair threads: Light Sandblast finish - Type 4 Stair nosing: Stainless Steel Ramp: Medium Sandblast finish - Type 3

22 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application MATERIALS AND FINISHES | SECTION 3

5 Roof Hatch 6 Ladder Cover 7 Electrical Cabinet Enclosure 8 Trench Drain Grates

Manufacturer: Bilco Function: Security Cover Style: Free standing on legs above pavement Manufacturer: Iron Age Designs Product: Type E, Size 3’-0” x 3’-0” (basis of design) Manufacturer: Carbis Brand: Alco-lite (basis of Manufacturer: Hoffman Model for grates at stairs: Regular Joe Heal Proof - 5” Cover: Flat, flush, uninsulated metal cover design) Product: 2 door, Type 12, 72”H x 60”W x 18”D width Material: Aluminum Cover / Aluminum Frame Product: 72 inches high, 25 inches wide, hinged Mount: Floor mount, 12” floor stands Model for grates at ramp and courtyard: Que Heel Finish: Mill finsihed aluminum, 11 gauge Material: Steel sheet, 12 gauge or 1/8 inch Aluminum Material: 12 or 14 gauge Type 304 stainless steel Proof - 5” width Note: Matching Bilco Guard Hatch Rail system sheet Finish: Panels smooth #4 brushed finished Material: Cast Aluminum Note: Match materials & finish with Electrical Cabinet Enclosure

9.4.2020 | 23 SECTION 4 | LIGHTING

35 34 33 32 31 30 29 28 27 2 SURFACE-MOUNTED LIGHT FIXTURE, TYP. 1 OF 20 2 A

D 1

LED FIXTURE MOUNTED TO EACH SIDE OF TRUSS, TYP. F

ROOF HATCH G 1

REFLECTED CEILING PLAN - LIGHTING 1 NOT TO SCALE

24 SEATTLE CENTER NW ROOMS UPPER BREEZEWAY DESIGN IMPROVEMENTS | Revised C of A Application LIGHTING | SECTION 4

1 LED Uplight 2 LED Downlight

Luminii WAC Lighting Kendo M Wet Rubix, model FM-W2510 Energy: 4.4W / ft Energy: 30W Finish: White Finish: Graphite LED: RGB color changing + tunable white, Dimmable LED: Color temp 3,000K, Dimmable Dimensions: .0.7” H, 0.73” W 48” L Dimensions: 4” H, 10” W 10” L

9.4.2020 | 25