Longtin Engineering

Our Services

Building Design

Transforming Visions into Reality

The cornerstone of our success as a Structural Engineering and Project Management practice has been the design of buildings. Longtin Engineering offers a full range of design services on all types of building projects, including: new buildings, building additions and renovations, façade and entry enhancements, interior updates and foundation design and analysis.

Job Includes:

Retrofit, Renovation and Rehabilitation

Enhancing Structures for Future Sustainability

Longtin Engineering has extensive experience in the rehabilitation, renovation and structural retrofit of existing buildings and other structures. For many clients, these projects offer a new life to their existing building. We offer a full range of design services related to Retrofit, Rehabilitation and Renovations of various buildings and structures.

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Condition Assessments and Investigations

Comprehensive Evaluations for Informed Decisions

Longtin Engineering recognizes that the majority of new projects require some degree of initial investigation before subsequent steps can be taken in the decision-making process. We offer a wide range of Structural Engineering and Project Management services to assist our clients with scope definition, preliminary engineering and project planning phases of their projects. Specific services related to condition assessments & investigations include: preliminary condition assessments, detailed condition assessments, comprehensive site inspections, Preparation of Reports and Studies, Claims Investigation, Code Compliance Reviews, Fire and Accident Damage Assessments, Building Condition Surveys, Space Planning and Building Evaluation.

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Site Structures

Engineering Excellence for Site Structure Projects

Longtin Engineering has extensive experience with the design and analysis of specialized site structures. Our firm has worked on a broad variety of projects requiring the construction of site structures for a multitude of client types. Each Site Structure project is unique and offers challenges and opportunities to create a unique solution.

Job Includes:

Large Heavy Timber Canopy Structures
Sign Structures
Streetscape Masonry Walls
Outdoor Water Features
Pedestrian and Light Vehicular Bridges
Retaining Walls
Equipment Support Structures (e.g. silos, hoppers, tanks, HVAC Equipment, etc.)

Industrial Structures

Engineering Excellence for Industrial Projects

Longtin Engineering has been providing design and consulting services to industrial clients since our inception. Our staff has completed a large variety of projects with services including planning, design, analysis, engineering and construction administration for numerous interior, exterior and site applications.

Job Includes:

Process and Central Utility Buildings
Chemical Secondary Containment Structures
Bulk Chemical Loading Stations
Pipe Racks
Access Platforms, Catwalks and Mezzanines
Crane and Hoisting Systems
Specialty Lifting Devices
Warehouses
Pump and Equipment Foundations
Machinery Foundations
Process Pipe Support Structures
Equipment Support Structures (e.g. silos, hoppers, tanks, HVAC Equipment, etc.)
Paint Booths
Plant Engineering Standards
Fall Protection Systems and Anchorage

Material Handling and Lifting Devices

Engineering Excellence for Material Handling and Lifting Projects

Longtin Engineering has extensive experience with the design and analysis of custom material handling and Below-the-Hook lifting devices, components and assemblies. In addition to the development of new designs, We have analyzed, load-rated, and retrofitted existing components and assemblies. Through existing partnerships, we can complete design-build projects for these applications as well.

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Construction Engineering

Building Excellence from Concept to Completion

Longtin Engineering is commonly retained by construction managers, general contractors, and specialty contractors to assist with the design of components and systems necessary for the completion of construction as well as the completion of design components delegated to the contractor.We have completed design, analysis and project engineering services across the entire breadth of the construction phase.

Job Includes:

Bridge Crane Structures
Monorail Structures
Jib Cranes
Gantry Cranes & Semi-Gantry Cranes
Lifting Beams & Below-the-Hook Lifting Devices (Code Compliance includes ASME BTH-1, ASME B30.20, European Standards, European Machinery Directive, Australian Standards, etc.)
Shipping Skids
Rigging Plans
Tooling Fixtures