DMCH_CMc_Solicitation_Amend_3_Program_of_Requirements_180202.pdf

Mack Scogin Merrill Elam Architects Neumann Monson Architects

UNITED STATES

FEDERAL COURTHOUSE

DES MOINES, IOWA

Program of Requirements

02/02/2018

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United States Federal Courthouse Des Moines - POR 1 02.02.18

Table of Contents Table of Contents

Section 1 - Executive Summary

1.0 Overview

Section 2 - General Requirements

2.0 Overview

2.1 Project Milestones

2.2 Project Budget

2.3 Code Compliance

2.4 Accessibility

2.5 Life Safety

2.6 Sustainable Design

2.6.1 LEED®

2.6.2 SITES™

2.7 Preliminary Code Analysis

2.8 Commissioning

2.8.1 Overview of the Commissioning Process

2.8.2 Commissioning Scope

2.8.3 Commissioned Systems

Section 3 - Building Systems and Technical Descriptions

3.1 Structural Description

3.1.1 Overview

3.1.2 Structural System Types

3.1.3 Structural Loads

3.1.4 Levels, Floor Plate Sizes, Column Spacing, etc

3.1.5 Blast, Progressive Collapse

3.1.6 Below-Grade Structural Considerations

3.1.7 Foundation System

3.2 Architectural Description

3.2.1 Overview

3.2.2 Envelope

3.2.3 Roofing and Waterproofing

3.2.4 Stairs and Vertical Transportation

3.2.5 Interior Partitions, Doors, and Glazing

3.2.6 Floors, Walls, and Ceiling Finishes

3.2.7 Equipment and Specialties

3.2.8 Art-In-Architecture (AiA)

3.3 Site and Utilities

3.3.1 Site Overview

3.3.2 Site Issues

3.3.3 Geotechnical Report

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3.3.4 Site Preparation

3.3.5 Site Paving, Structures, Landscaping, and Exterior Lighting

3.3.6 Utilities

3.4 Mechanical Description

3.4.1 Overview

3.4.2 HVAC

3.4.3 Plumbing

3.4.4 Fire Protection

3.5 Electrical Description

3.5.1 Overview

3.5.2 Power

3.5.3 Lighting

3.5.4 Fire Alarm

3.5.5 Communication Systems

3.5.6 Emergency Power Requirements

3.6 Acoustical Description

3.6.1 Overview

3.7 Information Transport Description

3.7.1 Overview

3.7.2 Information Transport Requirements

3.8 Audio-Visual Description

3.8.1 Overview

3.8.2 Audio-Visual Requirements

3.9 Security Systems Description

3.9.1 Overview

3.9.2 Security Requirements

Section 4 – Building Space Summary

4.0 Overview

4.1 Key Concepts and Adjacencies

4.2 Facility Space Needs

4.3 Room Data Sheets

Appendix

Government Reference Documents, Design Supporting Documents + General Reference Documents

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Section 1 - Executive Summary

1.0 Overview

The current 1929 US Courthouse and Courthouse Annex is located in downtown Des Moines, IA. The

USCH and Annex will not meet the 2026 space requirements identified in the 2015 AnyCourt. A project has been funded in FY16 for a new courthouse to be designed and built based on the approved 2015

AnyCourt Document, dated September 24, 2015, Space Needs Program dated July 12, 2017, and updated US Marshals requirements. The architecture team of Mack Scogin Merrill Elam Architects and

Neumann Monson Architects has been selected to facilitate the new design.

A new courthouse presents an opportunity to house the judiciary and court-related agencies in a way that is appropriate to the actual spatial and program requirements, current safety and security standards, and to the civic stature of a federal facility. In addition, consolidating the different offices into one building will enable a higher level of operational efficiency for the courthouse as whole.

The following is a basic summary of the program’s team approach to gathering information found throughout this Program of Requirements (POR). This additional detail reflects information gathered and documented during on-site visits with US Courts personnel, US Marshals personnel, United States

Attorney Office, GSA and the Space Needs Program dated July 12, 2017.

The facility as currently planned is expected to be 229,000 gross square feet consisting of 140,534 useable square feet, 18,900 square feet of interior parking (42 spaces), plus associated service and circulation space.

The space will include five (5) District Courtrooms, two (2) Magistrate Courtrooms and two (2)

Bankruptcy Courtrooms and their associated supporting spaces, such as judge’s chambers, jury deliberation facilities, jury assembly and grand jury suites, holding cells, etc. In addition, the space will include one (1) 8th Circuit Court of Appeals Judges chambers, though there will not be an 8th Circuit

Court of Appeals courtroom in the building. Office space will also be provided for the other tenants.

It is anticipated that multiple bid packages will be developed, i.e., base building, tenant improvement work, security, etc. It should also be noted that a waiver has been granted to use imperial measurements in lieu of metric units.

Site selection is currently underway, and it is anticipated the site will be identified near the time of award of the CMc contract. Site assumptions guiding the development of this document and for the final site are as follows:

• Location: Site in Des Moines, City Limits

• Site Size: Less than 2-acre site

• Status of Site: Non-Selective Demolition completed, and site cleared outside of this proposal

• Floodplain status: 500-year levee protected

• Utilities: Utilities are at the site from previous development

• Covenants and Restrictions: Current height restriction of 75ft will be resolved prior to start of design.

• Building Setbacks – 50ft setback from property line

• Transportation access (Parking) – 42 secure spots within building. Parking for employee, visitor, and jury parking to be offsite and not included.

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Section 2 - General Requirements

2.0 Overview

In addition to the 2015AnyCourt and 2016 PBS-P100 specific facility programming requirements to be accommodated, there are general requirements for which the proposed new facility must meet to be compliant with the expectations for the Government for an acceptable work environment. These include meeting the needs for building code compliance, accessibility, life safety provisions and sustainability as well as meeting the project milestones and project budget estimate

2.1 Project Milestones

The General Milestone Schedule is based upon the approach that during the course of the Design Stage, segregated construction documentation packages will be pursued to aid the Project schedule and/or budget. To facilitate this, the A/E will work in concert with the CMc to identify what components of the

Project can be released ‘early’ to facilitate an early construction start. Early bid packages may include, footings and foundation bid package, sitework bid package, core and shell bid package, and/or Interior fit out bid packages. An abbreviated Milestone schedule is shown below for reference.

MILESTONE TASK* DURATION START** FINISH**

DESIGN CONCEPT + DESIGN DEVELOPMENT

Pre Design Phase 12 wks 1/16/2018 04/9/2018

Design Concept Phase 22 wks 04/10/2018 09/10/2018

Preliminary Design Concepts Selection 58 days 06/05/2018 08/23/2018

Final Design Concept Submission 30 days 08/17/2018 09/27/2018

Design Development Phase 28 wks 09/11/2018 03/25/2019

Design Development Submission (75%) 1 days 11/15/2018 11/15/2018

Mock Ups 69 days 11/16/2018 2/20/2019

Construction Market Survey – Assist CMc 4 wks 02/22/19 03/21/19

Design Development Submission (100%) 1 days 03/21/2019 03/21/2019

CONSTRUCTION DOCUMENTS

Construction Document Phase (Overall) 34 wks 03/26/19 11/18/19

In-Progress CD Submission 75% 60 days 03/29/19 06/20/19

Budget Breakdown 75% CD Submission 3 wks 05/24/19 06/13/19

75% CD Submission 1 days 06/20/19 06/20/19

In-Progress CD Submission 90% 60 days 06/28/19 08/30/19

Budget Breakdown 90% CD Submission 3 wks 08/23/19 09/12/19

90% CD Submission 1 days 09/19/19 09/19/19

LEED Design Credit Submission 37 days 08/30/19 10/21/19

Construction Documents Submission 100% 35 days 09/27/19 11/14/19

100% CD Submission 0 days 11/14/19 11/14/19

CONSTRUCTION

Mobilization (prior to 100% CD) 1 days 09/19/19 09/19/19

Construction 151 weeks 09/19/19 08/15/22

Substantial Completion 1 day 08/15/22 08/15/22

*Abbreviated Schedule, not all tasks are identified.

** All Dates are tentative with goal of improvement.

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2.2 Project Budget

The Estimated Cost of Construction at Award (ECCA) for the new construction project is approximately

$95,000,000 - $105,000,000. This budget range includes costs for site work and construction work.

2.3 Code Compliance

All structures are required to meet the adopted building codes for the geographical area in which it resides. This project is in Des Moines, Iowa. It is required that the facility, meet all current codes at the time that design commences so that the facility is fully code compliant. Building codes establish minimum requirements to protect the health, safety and welfare of the buildings occupants, visitors and passer’s-by. It is acceptable to provide building attributes above these minimum standards.

Current adopted codes include the following:

• 2015 International Building Code (IBC)

• 2015 International Mechanical Code

• 2015 National Fuel Gas Code

• 2014 Liquified Petroleum Gas Code

• 2015 International Fire Code

• 2017 National Electrical Code

• 2015 International Plumbing Code

• ANSI A117.1 – 2009 Edition

• Energy - Iowa State Energy Code, 2015 International Energy Conservation Code

• Engineering - IOWA STATEWIDE URBAN DESIGN AND SPECIFICATIONS/STANDARDS FOR

PUBLIC IMPROVEMENTS (SUDAS) 2015 EDITION (effective April 2015)

In addition, this facility is required to meet the following requirements:

• National Fire Protection Association 2015 (NFPA 101 Life Safety Code 2015)

• Facilities Standards for Public Building Service 2017 (PBS-P100)

• US Courts Design Guide (USCDG) 2007, Including updated chapters 1,2,15,16 (2016)

• USMS Publication 64, Volumes 1-3, 2014 Edition

• Architectural Barriers Act Accessibility Standard (ABAAS)

2.4 Accessibility

This facility is required to meet accessibility requirements adopted by the Government as well as adopted by the City of Des Moines, Iowa. The concept of “Universal Design” proposes that all access to and through buildings be the same regardless of physical condition of the user, who may be confined to a wheelchair or otherwise non-ambulatory, vision or hearing impaired. Although not required to provide “Universal Design” components, the facility is required to meet the minimum requirements stated in the adopted standards for accessibility.

The Architectural Barriers Act (ABA) of 1968 requires that buildings and facilities designed, built, altered or leased with Federal funds be accessible to persons with disabilities. The Architectural

Barriers Act Accessibility Standard (ABAAS) is the standard to which this facility must comply.

2.5 Life Safety

By its very nature, this category is critical to the success of any project, as it deals with the safety of people. It is a subsection of Code Compliance and is enforced by the adoption of building codes and the

National Fire Protection Agency (NFPA 2015) Life Safety Code 101.

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The design team will implement through the design process, provisions for egress, alarms, fire protection, sprinkler systems, emergency lighting, smoke barriers and special hazard protection as necessary to address life safety concerns.

2.6 Sustainable Design

The project is to achieve, at a minimum, a Leadership in Energy and Environmental Design (LEED®)

Version 4 Gold rating and a Sustainable Sites Certification Program (SITES™) Silver rating. The A/E team will register the project for certification with the U.S. Green Building Council (USGBC) for LEED® and SITES™. The A/E team will pay all fees associated with registering, applying for, appealing, and otherwise obtaining LEED and SITES certification.

The A/E team will take the lead role in coordinating activities of the various contractors, subcontractors, consultants, and stakeholders associated with the project in order to maximize the ability to achieve the required LEED and SITES certifications; generally provide all services reasonably necessary to obtain the SITES and LEED® certification levels; review, prepare, collect, and otherwise assemble all documentation needed to support the SITES and LEED® certification submission, including reviewing, analyzing, preparing, and processing any appeals relating to the denial of any credit(s).

The CMc shall aid the A/E team in coordinating activities of the various contractors and subcontractors and generally provide all services reasonably necessary to obtain the LEED and SITES certifications being pursued. Including preparing and collecting necessary supporting documentation needed to support LEED and SITES certification submission.

In preparing the design, the A/E team shall use its professional judgement in deciding how to best design the project to acquire enough credits to achieve the required LEED and SITES certification. That being stated, in deciding which credits to incorporate into the design, the design team shall also be cognizant of and consider, among others, the overall scope and nature of the project; the goals of GSA, its tenant agency(s), and the mission of the tenant agency(s); location of the project; and the studies, analysis, and other documents included as part of this project.

2.6.1 LEED®

See attached sample checklist, credit selection subject to change and only preliminary in nature.

2.6.2 SITES™

See attached sample checklist, credit selection subject to change and only preliminary in nature.

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2.7 Preliminary Code Analysis

This analysis represents a broad preliminary view of building code requirements. The design team is responsible for final code review, analysis, and summary based on project specific parameters.

2015 International Building Code (IBC)

Chapter 3 – Use and Occupancy Classification

A-3 (courtrooms and jury Assembly) B (offices and related) I-3 Condition 5 (detention) S-2 (enclosed parking)

Chapter 4 – Special Detailed Requirements Based on Use and Occupancy

Given the program and site parameters, the building is expected to be classified a High-Rise, requiring an automatic sprinkler system, secondary water supply, and fire command center.

With such a system, special reductions in Construction Type will be allowed, see Chapter 6 for assumed Type of Construction.

The building will have a space connecting at least three stories at multiple locations in the building (lobby and courtroom floors), however this space will not be classified as an atrium as it will utilize compartmentalization of two-floor stacks using rated fire shutter assemblies. This will be pursued in lieu of a smoke exhaust system.

Standby power will be required for certain loads. A generator will be enclosed in the building with a 2-hour wall enclosure, exhaust and acoustic considerations. It will be located near the lower level focus on easy removal. Controls must be at fire command center.

Motor-Vehicle Related Occupancy (enclosed parking) will require mechanical ventilation and automatic sprinkler system. Heights and areas of enclosed parking are limited by Sections 504 and 506

Chapter 5 – General Building Heights and Areas

(To be revised with Final Concepts)

Type I-A Construction; Unlimited Building Height, Unlimited Stories and Unlimited Areas.

Building height, number of stories, and building area provisions shall be applied independently.

Each portion of a building separated by one or more fire walls complying with section 706 shall be considered to be a separate building.

Chapter 6 – Types of Construction

(To be revised with Final Concepts)

Type I-A

Primary Structural Frame: 3hr Bearing Wall: Exterior 3hr, Interior 3hr Non-Bearing Wall: Exterior 0hr (assumes > 30ft distance) Non-Bearing Wall: Interior 0hr Floor Construction: 2hr Roof Construction: 1 1/2 hr

Chapter 7 – Fire and Smoke Protection

Refer to Chapter 7 IBC, PBS-P100, and NFPA 101.

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Chapter 8 – Interior Finishes

Refer to table 803.11 IBC

Chapter 9 – Fire Protection Systems

A NFPA 13 automatic sprinkler system will be installed with Class I standpipes. An approved fire alarm system installed in accordance with IBC and NFPA 72 shall be provided. Manual fire alarm boxes are not required where the building is equipped throughout with an automatic sprinkler system, however they will be required in the I-3 Occupancy.

For High rise classification, automatic smoke detection shall be required in conjunction with emergency voice/alarm communication system, fire pump, and a Fire Command Center.

Carbon monoxide detection for the enclosed parking garage shall be installed in accordance with Sections 915 and section 406.6 (enclosed parking garage).

Chapter 10 – Means of Egress

Refer to Chapter 10 IBC and NFPA 101 per requirements of PBS-P100.

Chapter 11 – Accessibility

The Architectural Barriers Act (ABA) of 1968 requires that buildings and facilities designed, built, altered or leased with Federal funds be accessible to persons with disabilities. The

Architectural Barriers Act Accessibility Standard (ABAAS) is the standard to which this facility must comply. ABAAS is the standard to which this facility must comply.

Chapter 29 – Plumbing

Minimum number of required plumbing fixtures will be based off table 2902.1 of the IBC and will be dependent on calculations of A-3, B, and I-3 occupancies. (Refer to Section 3.4.3 of this document for additional information)

2.8 Commissioning

2.8.1 Overview of the Commissioning Process

The United States General Services Administration Public Buildings Service has committed to implement the Commissioning Process for the construction of the new United States Federal

Courthouse in Des Moines, Iowa.

The Commissioning Process is required by the Owner to verify that all systems reflect the Owner’s

Basis of Design and Owner’s Project Requirements, systems are complete and functioning properly, systems integrate with all other control systems where appropriate, and Facility Operations has adequate system documentation and training to operate and maintain the new facility over its life expectancy. The GSA and AO are committed to sustainable design and energy efficiency incorporating the principles of Leadership in Energy and Environmental Design (LEED). The project goal is LEED achievement at the Gold Level.

The Commissioning Authority (or Commissioning Provider) is being contracted by GSA and will provide the Owner (GSA) with an unbiased, objective view of the system’s installation, operation and performance. This process does not alleviate or reduce the responsibility of the Design Professionals or installing Contractors to provide a finished product. Commissioning is intended to enhance the quality of a system start-up and aid in the orderly transfer of systems to be of beneficial use by the Owner. The

Commissioning Authority is a member of the Commissioning Team, and is responsible for coordinating all commissioning activities with the Owner, Design Professionals, Construction Manager, Contractors, Subcontractors, Manufacturers and Equipment Suppliers.

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2.8.2 Commissioning Scope

The Commissioning Process includes all the parties directly involved in the design and construction process, as well as Owner’s Representatives and the Commissioning Authority. Commissioning takes place continuously during the project from programming through the first year of operation and touches all parties involved in design, construction, start-up, testing, operation and maintenance.

The Commissioning process for this project is to complete all aspects of Commissioning that are required to fulfill the process described in ASHRAE Standard 202 and complete any aspects of

Commissioning to meet the requirements for the LEED approval of the LEED defined processes of

Fundamental Commissioning and Enhanced Commissioning of LEED Rating for New Construction version 4.

The final acceptance tests of all fire protection and life safety systems shall be witnessed by the GSA

AHJ - Fire Protection Engineer, or their designated representative.

Some smaller equipment may be tested and documented by the Construction Contractor with only spot witnessing and report review by the Commissioning Agent.

Electrical equipment testing, and regulated testing, may be directed and documented by the

Construction Contractor with only spot witnessing and report review by the Commissioning Agent.

2.8.3 Commissioned Systems

Building Envelope (Testing Levels determined per Specifications)

• Curtain Wall and Mock Ups

• Roofing System

• Windows

• Doors – As involved for Air Barrier Testing per Specifications

• Moisture Barriers, Joints

Life Safety Systems (Testing in coordination with AHJ or designated party)

• Fire Protection

• Fire Alarm System

• Fire Detection System

• Fire Suppression System

• Smoke Management System

• Smoke Removal System

• Security/ Egress Locking Interface System

• Elevator Emergency Recall Operation

• Elevator Emergency in Car Operation

Plumbing Systems

• Domestic Hot Water Generators

• Domestic Hot Water Heat Exchangers

• Domestic Hot Water Pumps

• Plumbing System – (Samples for multiple equipment)

• Process Water – Irrigation when sustainable designed

Hydronic Systems and Equipment

• Water Chilling Units

• Air Cooled Water Chilling Units

• Cooling Towers

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• Chilled Water Heat Exchangers

• Primary Chilled Water Pumps

• Secondary Chilled Water Pumps

• Condenser Water Pumps

• Heating water Generators

• Primary Heating Water Pumps

• Secondary Heating Water Pumps

• Re-circulating Pumps

• Condensate Return Pumps

HVAC Systems

• Air Handling Units

• Energy Recovery Air Handling Units

• Special Area Air Handling Units

• Outside Air Handling Units

• Heating & Ventilating Units

• Elevator Equipment Air Handling Units

• IT Room Air Handling Units

• Fan Coil Units

• Toilet Exhaust Fans

• Return Air Fans

• Smoke Exhaust Fans

• Stairwell Pressurization Fans

• Garage Exhaust Fans

• VAV Terminal Units *

Systems Integration

• Instrumentation & Control System

• Review Control Documentation

• Monitor Control System Installation

• Verification of Functionality

• Verification of Controllability

• Review & Monitoring of Control System Installation

* Cx sampling planned.

Electrical Systems (Testing in coordination with Contracted parties)

• Service Entry Switchgear *

• Transformers *

• Switchboards

• Motor Control Centers *

• Low Voltage Distribution Transformers *

• Low Voltage Switchgear *

• Distribution Panelboards *

• LV Busway *

• Power Monitoring and Metering

• TVSS System *

• Grounding & Ground Fault System *

• Overcurrent Protective Devices

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• Variable Speed Drives

• Emergency Power Supply System

• Standby Power Supply System

• Uninterruptible Power System

• Automatic Transfer Switches

• Emergency Lighting *

• Day light Dimming Controls and Interior Dimming System Controls*

• IR Thermographic Survey Review *

Communications Systems (Testing observation with contracted party)

• Data & Communication *

Special Systems

• Process Instrumentation and Controls

• Sustainability Features

• Renewable Energy Sources (Wind, Solar, Etc.)

* Cx testing by spot testing.

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Section 3 - Building Systems and Technical Descriptions

3.1 Structural Description

3.1.1 Overview

Structural design for the building shall meet currently adopted GSA standards which include PBS- P100, The Risk Management Process For Federal Facilities (August 2013), GSA Alternate Path Analysis &

Design Guidelines for Progressive Collapse Resistance (January 2016), and other relevant supporting

Codes as previously identified. These Codes shall define the design loading (dead, live, wind, seismic, snow and blast). The Facility Security Level (FSL) has been defined as FSL Level 4.

3.1.2 Structural System Types

Two structural systems are currently under evaluation. Systems include structural steel beams and columns with composite concrete topped metal decking or cast-in-place concrete frame (mild reinforced one-way slab and beam or pan joist system). Post tensioned concrete and precast systems are not currently options under the GSA guidelines for this facility.

It is likely that the building will be steel framed. For Facility Security Level 4 of 4 stories and taller, the structural design will need to incorporate design for progressive collapse resistance. This means that any individual column must be designed to fail at any given time. The result of column failure will be that columns will be spaced relatively close together and framing members will be designed as moment connected at their supports. Significant field welding is anticipated to achieve framing continuity.

3.1.3 Structural Loads

(all given at unfactored service level)

Live Loading

• Entry level / gathering spaces/ lobbies: 100 psf

• Courtrooms and adjacent office space not open to the public: 80 psf

• Mechanical spaces: 100 psf

• Storage (files or library): 125 psf

• Note: per GSA documentation, live load reductions are not allowed for floors, columns or transfer beams. However, live load reductions are allowed for foundation design.

Vibration

In general, the structural system will be designed to the criteria identified in AISC Design Guide 11.

Baseline design for floors will meet the “office” acceleration limits. Tier 2 “High Performance” level activities are anticipated to be located in areas of slab-on-grade construction.

Wind

Wind forces will be more clearly defined as the building form is more clearly defined. It should be assumed the building will be designed to meet the Tier 2 High Performance Criteria which equates to a wind speed with a 3% probability of exceedance in 50 years. However, based on the governing codes and local conditions, it is likely that Main Wind Force Resisting Systems (MWFRS) will be designed to resist 15 to 25 psf wind forces on perimeter faces of the building. MWFRS components are shear walls or moment frames. Non-load bearing structural exterior framing members (exterior wall framing) will likely need to resist 20 to 30 psf wind pressures (component and cladding).

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Seismic

Seismic forces will be more clearly defined as the building form, construction materials, height and geotechnical information is further refined. The building will be required to conform to the “minimal damage-design structure for an operational level of performance per ASCE 41.”

Snow

• Ground snow: 30 psf

• Roof snow: 25 psf + drift as necessary

Blast

The building will be designed based on a Facility Security Level 4 designation. Steel tonnages indicated below reflect an alternate path / redundant design.

3.1.4 Levels, Floor Plate Sizes, Column Spacing, etc.

Given the program and site parameters, the expected number of levels and floor plate sizes are as follows:

Floor Plate Size: 178’-0”x 176’-0” (approximately 31,328 square feet)

However, it should be noted that due to a mixture of different interior volumes, various floor levels will be open to other floors. Therefore, it is assumed that the area for each floor would range from 21,000 sf to 31,328 sf.

Levels: Lower level: 1 (approximately 45,000 square feet) At-Grade or Above: 7 Penthouse Level: 1

Floor-to-floor height: First floor lobby 19-0”

All other floors 15’-0”

The building size, shape and form is yet to be designed; however, the following information may be used for estimating purposes. The information below assumes the structure is steel frame.

Column spacing: 20 to 30 feet on center

Column sizing: 3 psf of floor or roof space. Assume W12 or W14 columns.

Beam spacing: 10 feet on center

Beam Sizing: 5 psf of floor or roof space. No steel bar joists will be used.

Girder Sizing: 8 psf of floor or roof space. Note: all members framing into columns shall be moment connected to the columns to allow for redundancy / progressive collapse resisting design.

Floor framing: 4 1/2” of normal weight concrete structural topping over 3” x 18-gauge composite metal deck (7 1/2” total floor assembly). It is anticipated that raised access floor (RAF) will be utilized on top of the structural slabs in the courtrooms in order to facilitate future flexibility for electrical and data access. Elevation changes in the finished floor heights will be accomplished with light weight concrete topping, light gauge framing and metal deck. Elevation changes would occur in areas such as courtroom wells and jury boxes.

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3.1.5 Blast, Progressive Collapse

Based on a Facility Security Level designation of 4 and anticipation of a 4-story building or greater, blast/(anti) progressive collapse design will be a component of the design of the structure. The material weights indicated above in section 3.1.2 are the current estimates for material quantities and include consideration for blast design.

3.1.6 Below-Grade Structural Considerations

It is anticipated that there will be below grade construction as part of the court house structure. Wall construction below grade will consist of cast in place concrete walls. They will be a minimum of 12” thick and reinforced with a minimum of 2 curtains of #5 rebar at 12” on center each way. Below grade concrete shall achieve a minimum compressive strength of 4,000 psi and include air entrainment.

Cast-in-place concrete exposed to public view shall be finished to ACI 347.3 R-13 CSC2 requirements.

All below-grade walls adjacent to occupied space shall be insulated and waterproofed. Below-grade walls shall be backfilled with free draining cohesionless granular fill. A perimeter drain tile shall be installed on the outside face of the wall and connected to a sump pump.

3.1.7 Foundation System

The foundation system will be more clearly defined following site selection, site-specific geotechnical exploration and refinement of a building design.

It is anticipated that deep foundations will be used to support the structure. It is anticipated that 18” diameter auger cast piles will be utilized for the foundation system. Given the floor plate size above and assuming a 25’ x 25’ grid for planning purposes, a total of 50 columns are assumed (along with 50 pile caps). Eight piles per cap can be assumed. Auger cast piles will be reinforced with (1) #6 x 20’ long in the top of the pile. Pile caps are anticipated to be 4’-0” thick and 7’-0” x 7’-0” in plan dimension. Pile cap reinforcing is anticipated to contain a top and bottom mat of #6 rebar at 12” on center each way. At this time, the soil is anticipated to be sand or sandy clay. Auger cast piles will be end bearing. Bedrock is anticipated at 50’ to

60’ below existing grade. Grade beams will be located between pile caps. Grade beams will be

24” x 24” and include (4) #5 bars top and bottom (8 total) continuous. Grade beams will include #4 stirrups at 4’-0” on center continuous. Pile caps and grade beams shall be poured with 3,000 psi concrete with air entrainment.

3.2 Architectural Description

3.2.1 Overview

The facility is required to meet or exceed the requirements of the Facilities Standards for the Public

Buildings Service (PBS-P100), United States Courts Design Guide and US Marshals Service Publication

64. This facility needs to meet the needs of the Southern District of Iowa of the United Stated District

Courts, United States Bankruptcy Courts, U. S. Marshals Service, and other court-related tenants. The project needs to reflect the goals and objectives of the Design Excellence Program and emphasizing the dignity and importance of the U. S. Courts system.

Per the U.S. Courts Design Guides, the facility will have three distinct and separate circulation zones:

public, restricted and secure. The prototypical layout or stacking of the program elements from the

U.S. Courts Design Guide would start with an interior secure parking garage for 42 parking spaces. This would include secure entry points for judicial parking, sally port and service. The parking garage level may exist within the 500-year floodplain, and it would be designed/constructed with this in mind;

however, any occupied space, main electrical spaces, main mechanical spaces, and mailrooms will be located above the 500-year floodplain.

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The first level will have the main public/staff entry and security screening station. Off the lobby will be the jury assembly spaces and Probation’s office. The Clerk’s office and U.S. Marshals spaces will be above the main entry level, centrally located with the building stacking, with the courtrooms and associated chambers located above. The Special Proceedings courtroom would typically be located somewhere near the main entry level and accessible from the main lobby. The building will primarily have regularly stacked floor plates with minimal overhangs and projections. Please refer to Section

3.1.2 for information regarding structural systems and Section 3.1.4 for levels and floor plate sizing.

3.2.2 Envelope

The building enclosure performance requirements and attributes are explained in chapter 3 of the PBS-

P100. The Baseline requirement must be met at a minimum. The baseline standard of exterior materials for the U. S. Court facilities is precast concrete, stone, brick or other durable materials.

Building enclosure performance attributes are as follows, but not limited to: natural hazards, water penetration resistance, moisture and condensate control, air tightness, thermal performance, acoustic control, building enclosure commissioning and service life. A minimum STC of 40 is the baseline for the building envelope, but that may need to increase for some of the program spaces.

The building massing will be as compact and efficient as possible. We are targeting approximately 7 floors above a lower basement level of secure parking. The skin will be 40% glazing with insulated glass units and 60% solid/opaque material cladding. Of the opaque material cladding, approximately

40% will be an 80/20 brick/stone blend, with the majority (80%) of it being brick. The brick will be a mid-range brick, cost wise; and the stone sourced locally from somewhere in Iowa or the Midwest region. The remaining 20% of fenestration will be a type of hook and pin aluminum metal panel system. Assume 10% of the total building cladding will have some articulation and assume 5% articulation for the total area of glazing. For the backup wall (behind the stone cladding and the metal panel system), the following wall make-up should be assumed (starting inside and moving out): gypsum board, 16-gauge steel studs spaced 1/2" O.C. (no slip track connections at top and bottom), 18-gauge corrugated metal deck (all metal deck panel seems to have sealant and silicone sheet applied), air barrier, engaged masonry anchors, rigid board insulation, air cavity, and cladding (brick/stone or metal panel). The parking level exterior walls will be cast-in-place concrete with waterproofing and insulation where required. The building will maintain a 50’ setback from the property lines and more importantly the anti-ram barrier (bollards/low walls). With this setback, the shell is not required to be ballistic resistant, however some hardening of the exterior wall and ballistic resistant exterior and interior windows may be required in some instances.

There will be six (6) upward coiling steel doors, located at the secure parking entrance, loading dock and sallyport entrances. There will be 18 exterior glazed entry doors and 16 exterior metal doors. There will be approximately 8,500 square feet of exterior mechanical screen wall on the roof, and approximately 1,000 square feet of mechanical areaway for the basement parking level. There will be approximately 6,000 square feet of exterior soffit with about two-thirds of that incorporated into a roof overhang, or canopy. The other one-third of that soffit square footage will occur at the lobby level entries.

International Energy code requirements for “R” values shall be met including the continuous insulation requirements. If a mechanical penthouse is part of the design, the fenestration for the penthouse will be similar quality and consistent with the main building fenestration. Any exterior mechanical equipment located on the roof will be enclosed with an equipment screen.

3.2.3 Roofing and Waterproofing

The roofing and waterproofing performance requirements and attributes are outlined in chapter 3 of the PBS-P100. The baseline requirement must be met at a minimum. The roof shall be of a commercial

United States Federal Courthouse Des Moines - POR 20 material such as a single-ply membrane (fully adhered), with a code minimum slope. The roof needs to meet, at a minimum, a 20-year full service life. Roofing design must follow the recommendations of the

National Roofing Contractors Association as contained in NRCA Roofing and Waterproofing Manual. All roof assemblies and rooftop structures must meet the requirements in the IBC. An interior permanent stair will be provided to gain access to roof-mounted equipment.

3.2.4 Stairs and Vertical Transportation

The means of egress requirements for the building must meet the requirements in NFPA 101. An interior permanent stair must be provided to permit access to the roof and any roof-mounted equipment. Permanent access to all roof levels must be provided. There will be at a minimum, two fire-rated egress stairs that connect to every floor and provide the code required access to the exterior. All exit stairs will be equipped with exit stair path markings and exit stairway identification signage meeting the requirements of NFPA 101; as well as pressurized in accordance with the requirements in the IBC. There will be one flight of ceremonial, or feature stairs that is incorporated into the design of the main lobby.

Elevator systems must be designed and installed in accordance with the requirements in ASME

Standard A17.1/CSA B44 and the IBC. All lifts must comply with ASME A18.1, Safety Standards for

Platform Lifts and Stairway Chair Lifts. Elevator cab sizes must be in accordance with the standards established by the National Elevator Industries, Inc, (NEII). Elevator cabs must be designed to reflect the architectural character of the building design.

At a minimum, there will be two (2) passenger elevators, two (2) restricted elevators, two (2) secure/prisoner elevators and one (1) freight/passenger dual-purpose elevator. All elevator cabs shall have a ceiling height of 9 ft., except the one freight elevator which shall have a ceiling height of not less than 12 ft. The two passenger elevators shall have a load capacity of 4,000 pounds and a running speed of 500 FPM, with a total of seven stops per elevator cab. The two restricted elevators shall have a load capacity of 3,500 pounds and a running speed of 350 FPM, with a total of eight stops per elevator cab. The two secure/prisoner elevators shall have a load capacity of 4,500 pounds and a running sped of 350 FPM, with a total of six stops per elevator cab. The freight/passenger elevator shall have a load capacity of 5,000 pounds and a running speed of 350 FPM, with total of nine stops.

Only four of these elevators will have stops on the lowest level (parking level), and therefore they will have pits that require structure to extend below the parking level slab. The other three elevators will not have access or stops on the parking level. They will have a walk-in pit floor that is the same elevation as the parking level. All elevators shall be traction elevators. Machine room less (MRL) elevators/technology may be substituted for some of the elevators listed above, with GSA approval.

See Room Data Sheets for elevator cab finishes and descriptions for each type of elevator.

Fire service access elevators (FSAE), as required in the IBC, shall be provided in this building. Fire service access elevators must be designed and installed in accordance with the requirements in the IBC and ASME Standard A17.1/CSA B44, as well as special requirements per the PBS-P100. The two FSAE requirement will be met using the freight/passenger elevator and one of the passenger elevators. This will require rear entry/stops for both elevators. Both elevators will need to stop on every occupied floor and be connected to a FSAE vestibule (minimum 150 sqft), per IBC. The type, quantity, capacity and speed requirements of all elevators shall be confirmed with an approved elevator traffic analysis.

No dumbwaiter for weapons transport or pneumatic tubes will be used in the project.

United States Federal Courthouse Des Moines - POR 21

3.2.5 Interior Partitions, Doors, and Glazing

Interior partitions shall meet the fire ratings, STC ratings and all other specific requirements outlined in the PBS-P100, the IBC, the U.S. Courts Design Guide and the USMS Publication 64. Chapter 14 of the U.S. Courts Design Guide has specific guidance and requirements for the acoustic performance of each courthouse facility space. Interior partitions should be of construction to achieve the appropriate level of airborne sound isolation per the ASTM E-90-00 standard. Impact isolation to control footfall noise from adjacent and through spaces will be considered. Also, noise sensitive spaces will be protected from external noise ingress and designed to meet the Noise Isolation Class(NIC) required per the assigned privacy level. Acoustical neutral spaces will be used when possible as sound buffer zones between sensitive areas to achieve the privacy standards. Spaces such as judge’s suites, private offices, and reference/conference rooms will have slab to slab partitions as required. Heavy internal partitions and full height slab to slab partitions will be minimized to areas where it is required. A typical interior partition is composed of drywall on metal studs. All walls in prisoner spaces are required to be constructed with glazed masonry units 6” or thicker, per the USMS Publication 64. Cellblock perimeter walls will be constructed from the floor to the structural slab above.

See Room Data Sheets for more detail on required finishes, STC ratings, ceiling heights, spaces that can be incorporated into open office layouts, etc. for each space.

The courthouse will have a variety of door types and sizes, both rated and non-rated. The doors types will include solid wood doors, glass framed doors, hollow metal steel doors, oversized custom glass and wood doors for courtroom entries, steel mesh detention doors (USMS prisoner spaces), one USMS vault door and upward coiling solid steel doors. Assume a total count of 600 interior doors for the courthouse, with 510 of them being wood doors. Of those 510 wood doors, approximately 100 will have

STC requirements and fire rating requirements. Any security hardware that is installed on exit doors must meet the requirements of the NFPA 101.

For interior glazing, assume 14,600 square feet for full height and borrowed light glazing. This will be tempered, single pane clear glass. Separate from the rest of the interior glazing is the 400 square feet of interior ballistic and impact resistance glazing. This will be mostly located in the USMS, Pretrial and

Probation reception areas, and the security station at the main public entry. See Room Data Sheets for these areas for further explanation.

For interior railings, there will be a variety made up of the following types: approximately 750 lineal feet of egress guardrail and handrail, approximately 750 lineal feet of egress handrail, approximately

150 lineal feet of feature guardrail and handrail, approximately 500 lineal feet of miscellaneous railings and approximately 100 lineal feet of parking level railing.

3.2.6 Floors, Walls, and Ceiling Finishes

Interior construction and interior finishes performance attributes and requirements are outlined in chapter 3, sections 3.4 and 3.5, of the PBS-P100 and as outlined in the USCDG. All floors, walls and ceiling finishes for all Marshals spaces are outlined in the USMS Publication 64. See Room Data Sheets for specific room finishes.

The courtrooms are the most important and symbolic spaces of the courthouse. The finishes for the courtrooms, the courtroom entrances/lobby and chambers should have a certain level of richness to them. Per the USCDG, the courtrooms, chambers and courtroom lobby/entrances will have a minimum of 50% wood paneling and millwork, and the wood type for this millwork will be consistent throughout.

The judge’s bench, witness box, jury box, law clerk/court reporter station and attorney stations will be of matching millwork. There are casework requirements for the judge’s bench and chambers outlined in the Room Data Sheets. This casework will be incorporated in with millwork in these areas. There are specific ballistic requirements for the judge’s bench in each courtroom. See Room Data Sheets for further information and specific information concerning each space.

United States Federal Courthouse Des Moines - POR 22

The main lobby will be a double height space, with terrazzo flooring, gypsum board ceiling and rich materials for the walls with views to the exterior. The terrazzo flooring, ceiling and wall finishes will continue into the public spaces on the floors above, creating a continuity throughout the courthouse.

The public and private restrooms will have ceramic tile on the floors, gypsum board ceiling and a combination of ceramic tile and painted gypsum board on the walls. The total square footage of ceramic tile on the floor will be approximately 7,000 square feet. See Room Data Sheets for further definition.

The USMS Publication 64 is very descriptive in the materials to be used in the Marshals spaces, especially the prisoner areas. Within the prisoner areas the floor, wall and ceiling finishes/materials are specified, and cannot be deviated from. See the Room Data Sheets for these spaces.

The parking level, mechanical penthouse and any other mechanical rooms and electrical rooms located on the middle floors will have a floor finish of sealed concrete and a ceiling finish of exposed structure, with walls of painted gypsum board or painted structure. These spaces will add up to approximately

53,500 square feet.

3.2.7 Equipment and Specialties

A list of included and excluded items is as follows:

• Raised flooring to be used in the courtroom wells only. Amount of raised flooring to be considered/calculated is 850 sqft for a Magistrate or Bankruptcy courtroom, 1,300 sqft for a

District or Senior District Courtroom and 1,900 sqft for the Special Proceedings Courtroom.

Raised flooring product to be of a higher quality, and one that does not feel like a raised floor when walked upon.

• Tiebacks (S.S. U-Bar) for window washing and building maintenance along with an associated horizontal lifeline-type fall protection system shall be provided on the roof and shall meet or exceed OSHA regulations. Davits and davit arms (outrigger beams) are not part of this scope.

• Vehicle barricades, wedge type – not mechanical bollards – shall be used at the vehicle entrances and exits. Two vehicle barricades at the secure parking entrance/exit, and three vehicle barricades at the Marshals and loading dock entrance/exits.

• Control booth, or guard shack, located at the secure parking entrance/exit.

• A flagpole, per PBS-P100.

• Custom building exterior signage, and custom building interior signage including directory, wayfinding, and room identification (stainless steel quality, meeting tactile requirements).

• The audio equipment for the Courtroom is not included in this scope of work.

• The USMS Command Center equipment is not included in this scope of work.

• The USMS Security Checkpoint Station equipment is not included in this scope. However, that architectural screening of the security checkpoint and equipment is included in this scope.

Materials for screening of the equipment are to be to be compatible and similar with the main lobby materials.

• One loading dock spot with dock leveler, bumpers and railings.

• Space for a trash dumpster and a separate area for recycling bins, located near the loading dock.

• See Room Data Sheets for room specific equipment and specialties.

3.2.8 Art-In-Architecture (AiA)

Per GSA AiA Policies and Procedures, the A/E lead designer shall participate in the artist selection process and collaborate with selected artist(s) in the development and integration of art and the architectural and site design. The AiA budget for this project is fixed at 0.5% of the estimated cost of

United States Federal Courthouse Des Moines - POR 23 construction at award. The budget for the AiA includes the artist’s fee and any installation costs (which may fall to the CMc); these dollars lie outside of this scope of work.

3.3 Site and Utilities

3.3.1 Site Overview

Site selection is currently underway, it is anticipated the site will be identified near the time of award of the CMc contract. Assumptions for the final sites are as follows:

• Location: Site in Des Moines, City Limits

• Site Size: Less than 2-acre site

• Status of Site: Non-Selective demolition completed, and site cleared outside of this proposal

• Floodplain status: 500-year levee protected

• Utilities: Utilities are at the site from previous development

• Covenants and Restrictions: Current height restriction of 75ft will be resolved prior to start of design.

• Building Setbacks – 50ft setback from property line

• Transportation access (Parking) – 42 secure spots within building. Parking for employee, visitor, and jury parking to be offsite and not included.

3.3.2 Site Issues

None expected at this time, further clarification to be provided when site selection is finalized.

3.3.3 Geotechnical Report

At the completion of site selection, a geotechnical study for the site, including soil borings and geotechnical engineering analyses will be completed. The investigation will include analysis of seasonal water table, historic fill placement, and investigation of all underground and overhead utilities that may have to be relocated to include water, sewer, electric, gas, telecommunication, etc.

3.3…