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Home My WebLink About12/08/2025 - Meeting Materials ARCHITECTURE • LANDSCAPE ARCHITECTURE• INTERIOR DESIGN • PLANNING GSBS A k C Hi I E C �, I S Project Overview The proposed project involves the renovation of approximately 5,500 square feet located on the north end of the fifth floor of the Salt Lake City and County Building. The fifth-floor space is a unique opportunity for useful open office space in a historic building. The design intent emphasizes a balance between preserving historic character and accommodating new office needs of the City's Law Offices. Design Precedents Several precedents inform the design approach for this project: • GSBS Architects Offices / Henderson Building: This project highlights the integration of open office planning with exposed structural and mechanical systems, combining functionality with an expression of materiality and craftsmanship. • Puck Building: Known for its exposed brick and steel structural elements, the Puck Building demonstrates how historic spaces can be adapted for modern office use while preserving original architectural features. �fV, = a — 711 1t� • Salt Lake City and County Building - Accounting Offices: A historic precedent within the same building, the accounting offices demonstrate how spaces in the building can be furnished for office use while respecting original finishes, 375 WEST 200 SOUTH 901 WEST VICKERY BLVD. SUITE No 100 SUITE No 100 SALT LAKE CITY,UT 84101 FORT WORTH,TX 76104 www.gsb...chitects. P 801.521.8600 P 817.589.1722 moldings, and architectural detailing. These offices serve as a model for integrating new furniture with historic finishes and fixtures. Interior Finishes Interior finishes will include adding drywall to all open rafter cavities, furring out exposed concrete, and constructing wood millwork to conceal mechanical piping, with species, finish, and style chosen in keeping with historic elements. Two design options are proposed: a historic exposed brick and structure, with the wood columns and beams, painted steel structure and ducts, and simple wood base elements; or a more historic approach that matches the building's original finishes, covering the brick, wood structure, adding plaster crown molding details and decorative pendant light fixtures. Code Compliance Code compliance IEBC 2021 and IBC 2021. The space will be fully sprinkled, incorporate a fire-rated horizontal exit, and maintain a single-level floor. Due to the relocation of mechanical equipment, a mezzanine extension will be required to house existing and new HVAC components. Code analysis identifies the project as an alteration (IEBC 2021 Section 202), involving a change of occupancy from S to B in a historic building. Increased live loads necessitate the use of IBC 2021 Section 1607 for structural design, while Section 306 ensures accessibility compliance under ICC A117.1. Section 503 requires adherence to IBC provisions for alterations, with Section 506 confirming that the new occupancy is approved as less hazardous. Section 1200 recognizes the building's historic status, and horizontal exit requirements are dictated by maximum exit access travel distances per IBC 2021. Structural Design Structurally, new floor framing will support the fifth-floor office use, with both wood and cold-formed steel options analyzed. Framing requirements vary across five designated areas, using CFS sections such as 140OS350-97 and 160OS350-97 at specified spacings, or equivalent wood joists 3/4" x 14" @ 8" o.c. New framing supports both the office floor and existing ceiling, addressing inadequate deflection capacity in existing joists to mitigate plaster cracking. Analysis of roof truss braces indicates non- critical support in most areas, allowing selective removal and redistribution of forces. Mechanical, Electrical, Plumbing, and Fire Sprinkler Systems Mechanical, electrical, plumbing, and fire sprinkler systems will be added to serve the new office spaces. Existing air handling units will be relocated to an upper mezzanine, with ductwork and chilled/heating water extended to serve new fan coil units. Plumbing modifications will accommodate condensate piping for both existing and new HVAC units. Fire sprinkler piping will be redesigned to serve the remodeled space while maintaining coverage of the fourth floor. Electrical work includes new power panels, emergency power panels, and motor controls to support relocated and new air handlers. Fire alarm and detection systems will integrate new NAC panels, annunciation devices, and signal line extensions. Data systems will include a new rack and conduit connection to existing fiber cores, with dedicated grounding and emergency power. Lighting will be installed with energy code-compliant controls, emergency egress lighting, and power provisions, while security and card access systems will be provided as directed by the owner. Cost Estimates Rough order of magnitude (ROM) costs, based on the architectural, structural, and MEP narratives, are as follows: • Exposed Brick and Structure Option: $510-$545 per square foot o Total: $2.8M-$3M • Historic Aesthetic and Finishes Option: $600-$655 per square foot o Total: $3.3M-$3.6M The design preserves the historic character of the Salt Lake City and County Building while delivering a fully functional, code-compliant, and visually engaging office environment, informed by notable adaptive reuse precedents. Erin J. Mendenhall, Mayor Office of the Mayor City&County Building 451 South State Street Salt Lake City, UT 84111 Subject: Recommendation for Comprehensive Lighting Study — Salt Lake City & County Building Dear Mayor Mendenhall, On behalf of the Use and Conservancy Committee, we write to recommend that the City commission a comprehensive lighting study for the Salt Lake City & County Building. During our most recent review of the building's interior environments, we identified a number of concerns with the current lighting. Many of the existing fixtures appear not to conform to the prescribed design guidelines for Priority A spaces (Section 6.2.2.6), which call for light fixtures to be unobtrusive yet compatible with the historic character of each space. Moreover, the lighting in many areas appear to fall short of contemporary industry standards and may not meet minimum code requirements for egress and safety. To fully assess these conditions and to establish a direction, we recommend a formal lighting study with the following scope: 1. Existing Conditions Assessment • Inventory of all fixtures: types, quantities, locations, mounting heights, lamp types, and control systems. • Photometric survey: measurement of existing lighting levels (foot-candles) in all spaces. • Condition and maintenance review: age and serviceability of fixtures, damaged or degraded equipment. • Evaluation of control systems: dimmers, occupancy sensors, daylighting controls, timers, or smart-lighting systems. 2. Code and Standard Compliance • Review for compliance with relevant local and international codes and standards (e.g., IBC, IECC, ASHRAE 90.1, ADA, and applicable local energy or safety codes). • Assessment of compliance with the City and County Building Design Guidelines. • Verification that egress and safety lighting (emergency lighting, exit signage, stair and corridor illumination) meet current code minimums. 3. Lighting Performance Analysis • Compare measured illuminance levels to recommended lighting levels for different room types (offices, meeting rooms, lobbies, corridors, etc.). • Determine uniformity ratios to ensure even illumination without excessive glare, hot spots, or deep shadows. • Evaluate color quality: color temperature (CCT), color rendering index (CRI), and consistency across fixtures. • Assess visual comfort: whether lighting produces glare, flicker, or other conditions that may impair occupant comfort or perception. 4. Energy and Sustainability Evaluation • Quantify current lighting energy consumption (e.g., kWh/year). • Evaluate the efficacy and efficiency of existing fixtures (lumens per watt) and identify potential savings through LED retrofits or modern fixtures. • Estimate life-cycle costs including replacement frequency, maintenance costs, and projected energy savings. S. Recommendations & Next Steps Based on the study findings, the Committee requests the consultant to propose: • Fixture upgrades or retrofits — including replacement with code-compliant, energy-efficient fixtures. • Improvements to control systems — such as occupancy sensors, daylight harvesting, or centralized lighting management. • Design adjustments — repositioning, aiming, or re-spacing of fixtures for improved illuminance and comfort. • Historic/aesthetic-sensitive solutions — ensuring any changes remain compatible with the building's architectural character and design guidelines. • A rough order-of-magnitude cost estimate for proposed improvements, and a recommended phasing plan for when different measures should be implemented. We believe that undertaking this lighting study is essential to ensure that the City & County Building continues to meet both the historic preservation standards and the functional, safety, and sustainability needs of a modern public building. The findings will provide a sound, data-driven basis for prioritizing upgrades, budgeting, and scheduling future improvements. Thank you for your consideration of this recommendation on behalf of the Committee. We are ready to assist in defining the scope, selecting appropriate consultants, and participating in planning discussions as needed. Respectfully, Travis Shepp—aacr Chairperson Salt Lake City&County Building Use and Conservancy Committee i G S B S `M ' OPTION 1 (Cubicles only) ARCHITECTS 21 COUNTS 375 WEST 200 SOUTH i SALT LAKE CITY,UT 84101 36 Cubicles P 801.521.8600 www.gsbsarchitects.com — — — — — L — — — Fr - I I I I I I I I I I13 F-- - - -� - - --1 F-- J L TYP.CUBICLE SIZE < b 8'-0"X T-6" REVISIONS: p ❑I TYP. I I I I I I TOTAL QU ARE FEET: I I L — — SLC-CITY COUNTY BUILDING: BUDGET ESTIMATE SUMMARY Construction Pricing Furniture Pricing Total Cost per Square Foot - Cubicles 58 Exposed Brick Option 1 $2,956,003 $324,324.00 $3,280,327 $660 L Option 2 $3,368,389 $301,917.00 $3,670,306 $738 Option 3 $3,452,439 $308,154.00 $3,760,593 $756.51 = Private Offices Historic Finishes Option 1 $3,649,948 $324,324.00 $3,974,272 $799.49 Option 2 $4,511,371 $301,917.00 $4,813,288 $968 Option $4,838,200 $308,154.00 $5,146,354 $1,035.28 Note: Costs listed above include construction and furnishings, but do not cover soft costs such as design fees, permitting fees, or other related expenses. I I Feasibility Study L - Salt Lake City and L--- County Building - L 5th Floor Feasibility Structural Study Enter Address Here--> Salt Lake City Corporation I 451 State St. L Salt Lake City,UT 84111 OWNER PROJECT NO.: FAC24084 GSBS PROJECT NO.: 2024.056.03 ISSUED DATE: 12/04/2025 FURNITURE PLAN G012 REV I I I . G S B S `M + ■1 OPTION 2 (Cubicles Private Offices) � ARCHITECTS I COUNTS I I 375 WEST 200 SOUTH I SALT LAKE CITY,UT 84101 - 13Cubicles 10'-4" 10'-4" 10'-4" 10'-4" P 801.521.8600 - 16 Private Offices www.gsbsarchitects.com LI Ll � � E0 N, N N OFFICE OFFICE OFFICE OFFICE 81 SF 81 SF ❑ ❑ 81 SF 81 SF A A cn cis OFFICE OFFICE �� ❑ ❑ ❑ ❑ ❑ ❑ 141 SF 80 SF o ❑ ❑ — — � — — OFFICE - 82 SF N OFFICE OFFICE �i �i JL0 94 SF ❑ 94 SF LOFFICE F- 82 SF 16'-8" 8'-6" --1 C2 TYP.CUBICLE SIZE b ❑ 8'-0"X 7'-6" OFFICE _ _ REVISIONS: 146 SF A ❑ LL— —i—, ❑ A ❑ d, I 7'-6" TYP. OFFICE OFFICE OFFICE OFFICE ❑ 00 81 SF 81 SF 99 SF 99 SF TOTAL SQUARE FEET: ❑ 02 N � ❑� ❑ �. ❑ 4,9 71 SF N ❑ ❑ OFFICE 1U D Ll �. U1 4„ 3,0„ 6" - - - - - - 115SF 10'-4" 10'-4" 12'-7" 12'-7" 10'-6" 4'-11" 9'9" 14'-71/2" L 58" = Cubicles SLC-CITYCOUNTYBUILDING: BUDGETESTIMATESUMMARY L Construction Pricing Furniture Pricing Total Cost per Square Foot ❑ Exposed Brick Option 1 $2,956,003 $324,324.00 $3,280,327 $660 = Private Offices Option�- $3,368,389 $301,917.00 $3,670,306 $738 Option 3 $3,452,439 $308,154.00 $3,760,593 $756.51 Historic Finishes Option 1 $3,649,948 $324,324.00 $3,974,272 $799.49 ❑( Option $4,511,371 $301,917.00 $4,813,288 $968 I ❑J L Option 3 $4,838,200 $308,154.00 $5,146,354 $1,035.28 Note: Costs listed above include construction and furnishings, but do not cover soft costs such as design fees, permitting fees, or other related expenses. L I I ❑ Feasibility Study I L Salt Lake City and County Building - F 5th Floor Feasibility Structural Study LjI Enter Address Here--> Salt Lake City Corporation 451 State St. L — — — Salt Lake City,UT 84111 OWNER PROJECT NO.: FAC24084 GSBS PROJECT NO.: 2024.056.03 ISSUED DATE: 12/04/2025 FURNITURE PLAN G012 REV i G S B S `M OPTION 3 (Cubicles + Private Offices ARCHITECTS ■/ COUNTS 375 WEST 200 SOUTH SALT LAKE CITY,UT 84101 - 6 Cubicles 10'-4" 10'-4" i 10'-4" 10'-4" P 801.521.8600 - 22 Private Offices www.gsbsarchitects.com -F H -H H or N_ N OFFICE OFFICE OFFICE OFFICE 81 SF 81 SF ❑ ❑ 81 SF 81 SF { - A A cn cis r ❑ — — L OFFICE OFFICE ❑ ❑ ❑ ❑ ❑ ❑ ❑ 141 SF 80 SF o ❑ ❑ OFFICE - 82 SF N OFFICE ❑ �❑ n o 94 S F OFFICE -a / �i L ❑ 94 SF OFFICE 82 SF 16'-8" 8'-6" � TYP.CUBICLE SIZE b ❑ 8'-0"X 7'-6" OFFICE _ _ REVISIONS: 146 SF ❑ d, TYP. OFFICE OFFICE OFFICE OFFICE ❑ 81 SF 81 SF 99 SF 99 SF TOTAL SQUARE FEET: �❑ 02 00 (❑� ( �❑ N U1 1 I�I� 4,9 71 SF I I ❑ N ` ❑ ❑ r ❑ ❑ 4 OFFICE I - U1 �. ❑ 3 0 1 6 ❑ n _ 115SF - - - - -- - - - --- - -----�-- - - II - I I I 10'-4" 10 4' 12'-7" 12'-7" ❑ ❑ 10'-6" 4'-11" 9'9" 14'-71/2" 58' SLC-CITY COUNTY BUILDING: BUDGET ESTIMATE SUMMARY = Cubicles ❑ ❑ Construction Pricing I Furniture Pricing Total I Cost per Square Foot Exposed Brick Option 1 $2,956,003 $324,324.00 $3,280,327 $660 ❑ Option 2 $3,368,389 $301,917.00 $3,670,306 $738 = Private Offices Option 3 $3,452,439 $308,154.00 $3,760,593 $756.51 Historic Finishes Option 1 $3,649,948 $324,324.00 $3,974,272 $799.49 Option $4,511,371 $301,917.00 $4,813,288 $968 J❑ Option 3 $4,838,200 $308,154.00 $5,146,354 $1,035.28 Note: Costs listed above include construction and furnishings, but do not cover soft costs such as design fees, permitting fees, or other related expenses. Feasibility Study Salt Lake City and County Building - 5th Floor Feasibility ❑ ❑ Structural Study Enter Address Here--> ❑ ❑ Salt Lake City Corporation 451 State St. Salt Lake City,UT 84111 OWNER PROJECT NO.: FAC24084 GSBS PROJECT NO.: 2024.056.03 ISSUED DATE: 12/04/2025 FURNITURE PLAN G012 REV