B01 Att J04 - Construction Narrative.pdf

Indian Health Service

Whiteriver Indian Hospital

Whiteriver, AZ

Whiteriver Hospital Backup Generator Install

Final Submittal Narrative

Task Order No. 75H70122F30010

November 17th, 2022

TABLE OF CONTENTS

COVER SHEET

DESIGN SCHEDULE

ARCHITECTURAL NARRATIVE A1 – A2

STRUCTURAL NARRATIVE S1

ELECTRICAL NARRATIVE E1 - E2

MECHANICAL NARRATIVE M1 – M2

IHS White River – Hospital Backup Generator Install Architectural Narrative

AESUS Design Group A - 1

Architectural

This work includes the installation of a new back-up generator to provide redundancy for the hospital’s existing generator at the Whiteriver Indian Hospital located at 200 West Hospital Drive, Whiteriver, AZ 85941. This work shall include but not be limited to architectural, structural, mechanical, plumbing, and electrical.

This project will not affect life safety and/or egress.

Mechanical and Plumbing

- See attached mechanical narrative for additional info.

Electrical

- See attached electrical narrative for additional info.

Design Criteria

All aspects of the design shall be in full compliance with IHS design criteria.

The following codes and design criteria shall be utilized to the extent applicable:

IHS Directives, Design Manuals, Master Specifications, IHS National CAD Standard Application Guide, and other Guidance on the Technical Information Library.

International Building Code (IBC) (Only when specifically referenced in IHS Design Documents, see notes below)

NFPA 101 Life Safety Code

NFPA National Fire Codes with the exception of NFPA 5000 and NFPA 900

Occupational, Safety and Health Administration (OSHA) Standards.

IHS Seismic Design Requirements, H-18-8

National Electrical Code (NEC)

International Plumbing Code (IPC)

Safety Code for Elevators and Escalators, American Society of Mechanical Engineers

(ASME) A 17.1.

ASME Boiler and Pressure Vessel Code

ASME Code for Pressure Piping

Architectural Barriers Act Accessibility Standards (ABAAS) including HIS supplement, Barrier Free Design Guide (PG-18-13)

Building Code Requirements for Reinforced Concrete, American Concrete Institute and Commentary (ACI 318)

Manual of Steel Construction, Load and Resistance Factor Design Specifications for Structural Steel Buildings, American Institute of Steel Construction (AISC)

Energy policy Act of 2005 (EPAct)

DOE Interim Final Rule: Energy Conservation Standards for New Federal, Commercial and Multi-Family High-Rise Residential Buildings and New Low-Rise Residential Buildings, 10 CFR Parts 433, 434 and 435.

Federal Leadership in High Performance and Sustainable Buildings: Memorandum of Understanding (MOU)

IHS White River – Hospital Backup Generator Install Architectural Narrative

AESUS Design Group A - 2

Executive Order 13423: Strengthening Federal Environmental, Energy, and Transportation Management.

The Provisions for Construction and Safety Signs. Stated in the General Requirements Section 01010 of the IHS Master Construction Specification.

Ventilation for Acceptable Indoor Air Quality – ASHRAE Standard 62.1- 2004.

Safety Standard for Refrigeration Systems – ASHRAE Standard 15 – 2007.

Project Phasing

The contractor shall be required to perform construction operations during time frames approved by the hospital. Hospital staff must be able to perform their duties with a minimum of disruption, throughout the entire demolition and construction process. Ultimately, the precise sequence will be determined after a building contractor has been selected and consultations among the hospital staff, facilities personnel, contractor, and AESUS can be arranged. The scope of this project will be required to be done at specific times to avoid disruption of the day-to-day operations of the facility and may be required to be split into sub phases.

The following items shall be considered for IHS projects prior to the start of construction:

Staging for construction materials and access information for contractor.

In-depth site walks with IHS.

Phasing and safety plans.

Coordination drawing.

Asbestos Containment

If during demolition asbestos materials are found, demolition practices for removal and disposing of asbestos containing materials will need to be observed per the typical IHS guidelines. Refer to the latest IHS asbestos reports and specifications for the possible presence of hazardous materials.

IHS White River – Hospital Backup Generator Install Structural Narrative

AESUS Design Group S - 1

Structural Narrative

Introduction

This project is located on the IHS Whiteriver Campus in Whiteriver, Arizona. This work includes the installation of a new back-up generator providing redundancy for the hospital’s existing generator.

Architectural, structural, plumbing and electrical services are required for this project.

Scope of Work

The structural scope requires the design of a cast-in-place concrete mechanical equipment pad and adjacent ribbon slab for service and maintenance.

Design Criteria

All aspects of the design shall be in full compliance with IHS design criteria and the latest building codes.

The following codes and design criteria shall be utilized to the extent applicable:

2018 International Building Code (IBC 2018)

2016 Minimum Design Loads and Associated Criteria for Buildings and Other Structures - American Society of Civil Engineers (ASCE 7-16)

2019 Building Code Requirements for Structural Concrete – American Concrete Institute

(ACI 318-19)

2016 Steel Construction Manual, 15th Edition – American Institute of Steel Construction (ANSI/AISC 360-16 15th Ed.)

2019 IHS Architect/Engineer Design Guide.

Consult the White Mountain Apache Tribe and local utilities for any local jurisdictional codes and standards that must be followed.

Structural Design

The new generator is located on the ground level and is to be supported by a new 4000 psi concrete foundation slab or also known as an equipment housekeeping pad. The cast-in-place concrete pad will be reinforced with a top and bottom reinforcing mat with reinforcing running both longitudinally and laterally. The generator will be anchored to the housekeeping pads with a Hilti post-installed anchoring system that will satisfy the manufactures specifications and all seismic restraint requirements. Furthermore, the generator will have to be located at a determined distance away from an adjacent retaining wall as not to surcharge the wall with the generator.

IHS White River – Hospital Backup Generator Install Electrical Narrative

AESUS Design Group E - 1

Electrical Narrative

Introduction

This narrative discusses the Backup Generator Installation Design for the IHS White River Campus.

General Design Guidelines

The following guidelines shall establish the basic standards of construction for the work associated with this project.

All work described herein shall conform to the National Electric Code (NEC) – NFPA 70, The International Building Code, The Health Care Facilities Code, NFPA 99, The Life Safety Code, NFPA 101, The International Energy Conservation Code & applicable campus standards.

Project Scope

The hospital campus is currently served by a single 932KW backup generator in an N configuration. The purpose of this project is to utilize an existing generator from the Hopi Health Care Center to provide to provide N+1 backup capabilities to serve the entire campus.

The electrical portion of this work shall include, but not be limited to the following:

Utilize an existing 1000KW, 480Y/277V, 3PH, 4W Kholer generator from the Hopi Health Care Center. The generator will tie into the existing fuel system.

The generator will be located outside to the north of the existing plant.

The project will provide (1) generator emergency switchboard located outside on the north wall of the power plant.

The new emergency switchboard will be provided with two input breakers and two output breakers. The input breakers will be provided with kirk keys for manual operation and selection of generator. The output breakers will re-feed existing automatic transfer switches NED and existing emergency distribution board EPD from new emergency switchboard.

All other distribution will remain as is.

The electrical portion of this work shall include, but not be limited to the following:

Furthermore, the following shall apply to the areas in scope:

Electrical Service and Distribution:

All existing electrical service and distribution are to remain “as-is” unless noted otherwise.

Additions or modification to any panel or service will be documented.

Existing egress or emergency lighting will be reconnected or modified as needed.

Branch Wiring:

IHS White River – Hospital Backup Generator Install Electrical Narrative

AESUS Design Group E - 2

Branch wiring system will be installed in accordance with 2020 NEC. Each branch circuit will utilize a dedicated neutral conductor. All branch circuits shall utilize an equipment grounding conductor in each conduit. The conduit will not be allowed to be used as the sole grounding path.

All branch circuiting will be copper conductors in conduit. Minimum conduit size will be 3/4”.

Typical branch circuit wiring will be minimum #12 AWG CU, installed in EMT conduit for power and lighting systems. Rigid conduits shall be used for all exposed conduit runs where EMT would be subject to physical damage as defined by the National Electrical Code (NEC). Conduits to be installed concealed, except where installed in electrical rooms, mechanical rooms or other unfinished areas.

All empty conduits shall have a pull string installed in them.

All panelboard feeders shall be copper conductors installed in conduits.

All electrical equipment shall be bonded with a dedicated equipment grounding conductor.

Power for Mechanical Equipment:

Power for Mechanical Equipment wiring systems will be installed in accordance with 2020 NEC.

Each branch circuit will utilize a dedicated neutral conductor as needed. All branch circuits shall utilize an equipment grounding conductor in each conduit. The conduit will not be allowed to be used as the sole grounding path.

All branch circuiting will be copper conductors in conduit. Minimum conduit size will be 3/4”.

Wiring Devices:

Wiring Devices shall be duplex receptacles rated for 120V with 5-20 NEMA configuration, nylon type, with finishes determined by architect. Device faceplates shall be thermoplastic.

Interior receptacles located within 6 feet of a water source shall be provided with GFCI.

Wiring devices to be mounted in 4” square x 2-1/8” deep minimum boxes with appropriate gang mud ring.

Where wiring devices are surface mounted or in unfinished areas, devices to be mounted in a 4” square outlet box with matching industrial raised cover plates.

Device wall plates to have extra strength laminated adhesive tape labels indicating the source panel and circuit number. Tape to be clear with back letters.

Receptacles shall have the following finish:

o Normal = White o Life Safety / Emergency = Red

Receptacle cover plate to match color of receptacle

Receptacles to be installed in accordance with the electrical drawings.

IHS White River – Hospital Backup Generator Install Mechanical Narrative

AESUS Design Group M - 1

Design Criteria

All aspects of the design shall be in full compliance with IHS design criteria. The following codes and design criteria shall be utilized to the extent applicable:

International Building Code (IBC)

International Plumbing Code

NFPA 101 Life Safety Code

NFPA 110 Emergency Power

NFPA National Fire Codes with the exception of NFPA 5000 and NFPA 900

Occupational, Safety and Health Administration (OSHA) Standards.

National Electrical Code (NEC)

International Plumbing Code (IPC)

Safety Code for Elevators and Escalators, American Society of Mechanical Engineers

(ASME) A 17.1.

ASME Boiler and Pressure Vessel Code

ASME Code for Pressure Piping

Building Code Requirements for Reinforced Concrete, American Concrete Institute and Commentary (ACI 318)

Manual of Steel Construction, Load and Resistance Factor Design Specifications for Structural Steel Buildings, American Institute of Steel Construction (AISC)

Existing Conditions

The existing building was surveyed assessed during the initial kickoff. Notes and pictures from the surveys are provided below.

Outdoor fuel tanks (10,000 gallon) and transfer pump shall remain.

Existing fuel day tanks serve the boilers and are to remain. The fuel pumps are replaced in the boiler contract.

IHS White River – Hospital Backup Generator Install Mechanical Narrative

AESUS Design Group M - 2

Fuel Storage Requirements

Currently there are (2) 10,000 gallon diesel storage tanks on site. The fuel is recirculated by (2) 1/2 HP pumps located withing the boiler room. Fuel is transferred to 1) 100 gallon day tank at the boilers and 2) the day tank at the emergency power generator.

The primary and only source of fuel is from diesel storage tanks located in the yard. There is no backup fuel source.

The day tank and fuel circulation pumps are replaced as part of the boiler replacement project. If this project is not completed, the size of the existing fuel pumps shall be reviewed.

Per NFPA 110, a minimum of 96 hours of fuel is required to maintain for emergency use.

o New water boilers are redundant, each requires 28.9 gal/hr.

o The existing generator (and new generator project, redundant) are 1000 KW, which requires 71.2 gal/hr.

o At full rate, 100.1 gal/hr will be required over the 96 hours = 9,610 gallons.

o The (2) 10,000 gallon tanks have sufficient capacity. Accordingly, to maintain the 96 hour requirement we suggest that the (2) tanks never be pulled below 55% available.

Alternately, that one tank be kept full and other be left with 10% available.

New Work

Refer to plans.

Final Mechanical Narrative