NAVFAC Design-Build Model Request for Proposal - Magazine
C20 STAIRS
NAVFAC PTS-C20 (September 2022)
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Preparing Activity: NAVFAC SUPERSEDING PTS-C20 (December 2018)
PERFORMANCE TECHNICAL SPECIFICATION
SECTION C20
STAIRS
09/22
NOTE: This section is intended to be used as a guide and contains requirements that are common to Magazines. In addition, there may be special requirements for a particular project that are not addressed at all. The RFP preparer will need to incorporate additional information to address these special requirements in this PTS and corresponding Part 3 ESR. If the RFP Preparer chooses to delete building elements that are not required for the project, do not change the remaining Uniformat paragraph designations (example A102001). Uniformat designations are unique to the products they are assigned to. However, the subparagraphs numerical extension (example - 1.2 or a,b,c of the Uniformat designations may change if subparagraphs are deleted).
This guide specification is formatted utilizing Uniformat II, an industry recognized standard, ASTM E 1557. When the RFP preparer chooses to add a paragraph that does not apply to an existing building element already included in the specification, refer to the Uniformat/WBS located on the NAVFAC Design-Build Website for a listing of Uniformat II designations and definitions.
NOTE: The RFP preparer may view or hide the criteria notes in this PTS section by modifying the WORD preferences for "Hidden text". To view the criteria notes, choose "File" then "Option". Click "Display" then check the "Hidden text" box under "Always show these formatting marks on the screen". In the same section, check the box for "Print hidden text" under "Printing options" to print the criteria notes.
NOTE: The following Table of Contents is for navigation purposes within the document and is not intended to be part of the final edited documents
TABLE OF CONTENTS
C20 GENERAL
C20 1.1 DESIGN GUIDANCE
C20 1.2 PERFORMANCE VERIFICATION AND ACCEPTANCE TESTING
C20 1.3 CONSTRUCTION SUBMITTALS
C2010 STAIR CONSTRUCTION
C201001 INTERIOR AND EXTERIOR STAIRS
C201001 1.1 CONCRETE STAIRS / STEPS
C201090 STAIR HANDRAILS, GUARDRAILS, AND ACCESSORIES
C201090 1.1 HANDRAILS
C20 GENERAL
RFP Part 3 including the Engineering System Requirements (ESR) provide project specific requirements. The RFP Part 4, Performance Technical Sections (PTS) provide generalized technical requirements that apply to multiple facility types and include more requirements than are applicable to any one project. Therefore, only the RFP Part 4 requirements that apply to the project and further define the RFP Part 3 project specific requirements are required.
C20 1.1 DESIGN GUIDANCE
Provide the design and installation in accordance with the following references. This Performance Technical Specification (PTS) adds clarification to the fundamental requirements contained in the following Government Standards. The general requirements of this PTS section are located in PTS Section Z10, General Performance Technical Specification.
Industry standards, codes, and government standards that are referenced in the section text that are not found in the Unified Master Reference List (UMRL) in the Federal Facility Criteria (FFC) at the Whole Building Design Guide (WBDG) website, are listed below for basic designation identification. Comply with the required and advisory portions of the current edition of the standard at the time of contract award.
NOTE: Edit the following list of industry and government standards to coordinate with the section text additions and deletions. List all industry and government standards in the following two paragraphs that are indicated in the section text that are not listed in the UMRL.
C20 1.1.1 Industry Standards and Codes
AISC American Institute of Steel Construction
C20 1.1.2 Government Standards
UNIFIED FACILITIES CRITERIA (UFC)
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UFC 1-200-01
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DoD Building Code (General Building Requirements) (A reference in this PTS section to UFC 1-200-01 requires compliance with the Tri-Service Core UFCs that are listed therein, which includes the following significant UFC(s): UFC 3-101-01 Architecture UFC 1-200-02 High Performance and Sustainable Building Requirements) |
C20 1.2 PERFORMANCE VERIFICATION AND ACCEPTANCE TESTING
Provide verification of satisfactory stair performance via Performance Verification Testing, as detailed in this section of the RFP.
C20 1.2.1 Field Testing for Concrete
Field Quality Control Test Reports to be submitted to Designer of Record (DOR) must comply with American Concrete Institute (ACI) 301. If concrete is found to be below the strength required in the tests, remove and replace that concrete and all associated building components at no additional cost to the Government.
NOTE: NAVFAC has made every effort to use commercial standards in the PTS sections. This PTS section is designed to only use commercial standards. If project requirements dictate the use of a UFGS sections as a standard, add a paragraph here listing the required UFGS section. State in the paragraph that the DOR must edit this UFGS section in accordance with PTS Z10 and submit it as a part of the design submittal.
C20 1.3 CONSTRUCTION SUBMITTALS
Submit construction submittals in accordance with PTS Section Z10, General Performance Technical Specification. In addition to the Z10 requirements the Designer of Record (DOR) must approve the following construction submittals as a minimum:
Stairs, handrails.
C2010 STAIR CONSTRUCTION
C201001 EXTERIOR STAIRS
Provide cast-in-place concrete stairs for industrial and commercial construction. Design load must not be less than 100 PSF (4.8 kPa) for live load, and 300 pounds (136 kg) for concentrated loads. Required means of egress stairs must conform to to National Fire Protection Association (NFPA) 101. Provide steel guard and handrails.
C201001 1.1 CONCRETE STAIRS / STEPS
Provide interior or exterior concrete steps and stair with non-slip finish. For exterior stairs, provide cast-in-place abrasive nosing. Provide steel guard and handrails as necessary.
C201001 1.1.1 Materials
- Concrete - ACI 211.1, ACI 301/301M, and ACI 318/318M, with a compressive strength of 3,000 psi (20,680 kPa) or greater. Concrete Mix Design shall be suitable for the job conditions.
- Reinforcements - Bars, fabrics, connectors, and chairs must be galvanized.
- Reinforcing Bars - ACI 301/301M
- Welded Wire Fabric - ASTM A 185 or ASTM A 497
- Cast Aluminum Safety Nosings – For exterior concrete stairs, provide safety nosings of cast aluminum with abrasive surfaces or with abrasive inserts.
C201090 STAIR HANDRAILS, GUARDRAILS, AND ACCESSORIES
C201090 1.1 HANDRAILS
Design handrails in accordance with the International Building Code (IBC), except delete the handrail design load reduction code exceptions for residential, prisons, industrial, high hazard, and storage facilities. NAAMM Pipe Railing Systems Manual, provide the same size rail and post. Provide series 300 stainless steel pipe collars. Factory coat all metal railings (except for ornamental metals such as brass, bronze, stainless steel, and nickel-silver) with a high performance coating in accordance with American Architectural Manufacturers Association (AAMA) 2605, with a minimum coating thickness of 1.2 mils unless otherwise noted.
C201090 1.1.1 Steel Handrails
Provide steel handrails, including inserts in concrete, steel pipe conforming to ASTM A 53 or structural tubing conforming to ASTM A 500, Grade A or B of equivalent strength. Railings must be hot-dip galvanized and shop painted for exterior applications and primed and shop painted for interior applications. Railing may be unpainted hot-dip galvanized in industrial areas.
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