What We Do

 

Pre-Construction

Pre-Construction is vital to the overall success of a project. At GDO, our staff takes the utmost care during the initial phases of a project. We have constantly innovated over time, and our team is equipped to develop and implement 3D Modeling and BIM into your projects! We also offer the following pre-construction services:

Design Assist

  • Attend Pre-Construction meetings

  • Feasibility / Constructibility Input

  • Building Logistics

  • Sketching

  • Scheduling

  • Estimating

Sketching

  • BIM

  • Existing Conditions Models

  • Laser Scanning

  • Shop Drawings Coordinated with Design

Scheduling

  • Anticipated Durations

  • Project Phasing

  • Identifying Long Lead Time Items

  • Identifying Key Milestones

  • Create Project Funding Schedule

Estimating

  • Budgets

  • Value Engineering (VE)

    • Alternate Manufacturers / Suppliers

    • Pre-Purchases

    • OCIP / CCIP

    • Economy of Scale

    • Payment Terms

Off-Site Construction

GDO properly staffs all of our projects to your needs. We will gladly provide our clients the following off-site personnel:

  • Management

    • Project Executive

    • Project Manager

    • Assistant Project Manager

    • Project Estimator

    • Project Accountant

    • Project Administrative Assistant

  • Procurement

    • Warehouse to stock and store equipment / material

    • Union Trucks and Drivers to deliver to site

  • BIM Modeling 3D

 

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On-Site Construction

Our on-site staff handles each project effectively, efficiently, and most importantly, safely. Our on-site management consists of:

  • Project Manager

  • Assistant Project Manager

  • Project Superintendent

  • Project Foreman

We are a union shop, and utilize the following workforces:

  • Local 638 Steam-Fitters

  • Local 638 Service Mechanics

  • Local 21 Steam-Fitters

  • Local 282 Teamster Drivers

  • Competent and Qualified Sub-Contractor(s) based on:

    • Project Specific Qualifications

    • Maintains GDO’s qualifications, experience, and expertise.

    • Long-Term Strategic Business Partners

Safety is GDO’s top priority for our on-site staff. All of GDO’s field Management is SST certified and complies with all OSHA & NYC Building Department Safety Regulations.

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BIM Modeling

3D
Sketching

  • Existing Condition Models

    • Laser Scanning

  • Animations, Renderings, Walkthroughs

  • BIM Driven Prefabrication

  • Laser Accurate BIM Driven Field Layout

4D
Scheduling

  • Project Phasing Simulations

  • Lean Scheduling

    • Last Planner

    • Just in Time (JIT) Equipment Deliveries

    • Detailed Simulation Installation

  • Visual Validation for Payment Approval

5D
Estimating

  • Cost Planning

  • Quantity Extraction to Support Detailed Cost Estimates

  • Verification from Fabrication Models

    • Wet Side

    • Air Side

  • Value Engineering

    • “What if” scenarios

    • Quantity Extractions

  • Prefabrication Solutions

    • Mechanical systems

    • Equipment Rooms