Altieri Sebor Wieber, LLC

Making Bold Visions Work

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About the firm

Altieri Sebor Wieber, LLC designs environmentally responsible building systems for architecturally challenging environments. The practice specializes in mechanical, electrical, plumbing, and fire protection engineering, as well as low-voltage system design, energy modeling, master planning, and decarbonization strategy. It collaborates with architects and owners on cultural, educational, and historic landmarks.

Firm type
MEP · Mechanical Engineering · Electrical Engineering · Fire Protection Engineering

People

Michael A. FreliechPrincipal / Boston Office Leader

Capabilities

MEPF Engineering

Service website

State-of-the-art infrastructure systems designed for highly controlled and architecturally challenging environments.

  • Mechanical Engineering

    Integrates environmental control and ventilation systems seamlessly within finished spaces to protect aesthetics and performance.

    • Building Automation and Energy Management

      Design and optimization of automated facility management architectures.

    • Central Heating and Cooling Plants

      Sizing and routing of central plant infrastructure and utility networks.

    • Campus Energy Distribution

      High-efficiency hot water, chilled water, steam, and glycol distribution systems.

    • Variable Refrigerant Flow and Hydronic Systems

      Integrated VRF, active chilled beam, and radiant cooling panel systems.

    • Specialty Ventilation and Geothermal Design

      Deployment of displacement ventilation, natural ventilation, and geothermal heat pumps.

    • Computational Fluid Dynamics Analysis

      Airflow and thermal simulations to verify environmental conditions in custom spaces.

  • Electrical Engineering

    Powers environments with precise and reliable systems configured to support architectural designs and boost operational efficiency.

    • Power Distribution Systems

      Design of electrical service entry, routing, and facility distribution equipment.

    • Emergency and Standby Power Generation

      Backup power generation and transfer logic to ensure continuous facility operations.

    • Architectural Lighting and Controls

      Coordinated lighting layout design and energy-efficient lighting control schemes.

    • Fire Alarm and Lightning Protection

      Life safety notification systems and building envelope grounding structures.

    • Photovoltaic and Power System Analysis

      Sizing studies for solar integration along with arc flash, short circuit, and coordination analysis.

  • Plumbing Engineering

    Coordinates and routes sanitary, water, and gas distribution networks for safety and long-term maintenance access.

    • Potable and Non-Potable Water Systems

      Safe supply systems mapped to precise facility and occupant consumption parameters.

    • Sanitary, Waste, and Storm Drainage

      Integrated sewer, specialty acid waste venting, and exterior drainage plans.

    • Gas and Compressed Air Distribution

      Industrial gas, compressed air, and natural gas systems built to strict code standards.

    • Pumping and Domestic Booster Systems

      Customized circulation and booster configurations for dependable pressure maintenance.

  • Fire Protection Engineering

    Suppresses hazards in complex spaces using customized, minimally intrusive systems designed to modern life-safety codes.

    • Sprinkler and Standpipe Design

      Custom water-based suppression plans matched to building occupancy and hazard class.

    • Clean Agent Suppression Systems

      Specialized gas-based fire suppression for museums, libraries, and archival facilities.

    • Specialty Hazard Fire Suppression

      Tailored configurations protecting unique, double-height, or highly critical spaces.

Low Voltage Systems Design

Service website

Technology infrastructure including communication, audiovisual, and security systems to enable converged building networks.

  • Information Technology Systems

    Configures network cabling and pathway infrastructure designed for seamless connectivity and hardware survivability.

    • Structured Cabling Systems

      Data and telecom cabling paths mapped for scalability.

    • Local and Wide Area Networks

      Core routing, switching, and hardware specification.

    • Wireless Planning and Heat Mapping

      RF propagation analysis to optimize access point coverage and density.

    • Server and Telecom Room Design

      Mission-critical spaces configured with dedicated pathways and back-end environmental protections.

  • Audio Visual Systems

    Integrates state-of-the-art display, sound, and control equipment to support academic, corporate, and performance events.

    • Digital Signage and Video Walls

      LED wall integrations and building information displays.

    • Hybrid Videoconferencing Systems

      Optimized camera, display, and microphone mapping for physical and virtual collaboration.

    • Networked AV Control

      Centralized hardware architectures to manage multi-room media environments.

    • Projection Mapping and Sound Systems

      Complex localized sound design, projection blending, and custom theatre integrations.

  • Security Systems

    Coordinates physical security infrastructure with building alarms and vertical transportation systems.

    • Physical Security Infrastructure

      Secure server rack planning, dedicated pathways, and security cabling.

    • IP Cameras and Access Control

      Detailed mapping of surveillance cameras, card readers, and intrusion detection hardware.

    • Intrusion Detection Systems

      Perimeter and interior alarms integrated with facility-wide safety software.

Decarbonization & Net Zero Strategy

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Assists clients with building and campus strategies to lower greenhouse gas emissions and meet sustainability goals.

  • Decarbonization and Electrification Planning

    Detailed strategic transition plans away from fossil-fuel-based heating and domestic systems.

  • Geothermal Heat Pump Strategy

    Feasibility, sizing, and design of geothermal source networks.

  • Off-site Photovoltaic Strategy

    Integration of remote solar arrays and solar fields into the facility's power mix.

  • Operational Carbon Reductions

    Strategies aligning with international standards to reduce building energy intensity.

Master Planning & Existing Conditions

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Evaluates existing facility systems to provide strategic guidance on capital upgrades and compliance.

  • Code and Life Safety Compliance Reviews

    In-depth checks of vintage and active systems against contemporary safety regulations.

  • System Performance and Reliability Upgrades

    Detailed recommendations to stabilize and extend the operating life of MEPF assets.

  • Existing Conditions Facility Assessments

    Tiered planning strategies to prepare aging assets for future operational expansion.

Energy Modeling

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Provides building performance simulation to inform systems design, verify compliance, and secure green certifications.

  • LEED Integrative Energy Analysis

    Calculates minimum and optimized energy performance metrics to secure LEED points.

  • Code Compliance and Energy Cost Budgeting

    Leverages eQuest, Trane Trace, Energy Plus, IES, and Cove.tool to verify compliance limits.

  • Utility Incentive Program Submissions

    Compiles and formats performance data required by regional power programs and local guidelines.

Industries

Arts & Culture · Education · Sports & Recreation · Parks & Open Space · Residential · Historic Preservation · Religious

Projects

David Rockefeller Creative Arts Center

NY · Arts & Culture · 2023 · Client: The Pocantico Center

Project details

An adaptive reuse project that transformed a historic Orangerie at The Pocantico Center into a flexible performing arts, exhibition, and education facility. The sustainable design achieved LEED Platinum with 88 points, making it a high-scoring LEED v4 BD+C project in New York State.

The Obama Presidential Center

Arts & Culture · Client: Obama Foundation

Project details

Designing all-electric mechanical, electrical, and plumbing systems for the campus, pursuing ILFI Zero Carbon, SITES Silver, and LEED Platinum certifications. The design utilizes an all-electric geothermal heat pump system with energy sourced entirely from off-site photovoltaic panels.

Glenstone Museum

Arts & Culture · 2021 · Client: Glenstone

Project details

Provided environmental systems and engineering to achieve LEED Platinum certification for the Arrival Hall and LEED Gold certifications for the Pavilions and Café, focusing on redundancy, reliability, and close control.

The Getty Center

Arts & Culture · Client: The Getty Center

Project details

Completed original MEP designs that enabled the facility to become the first existing building in the United States to achieve LEED certification. Later returned to perform a comprehensive Central Plant Engineering Study more than 20 years after the original work.