Engineering Design - Fan Wall Replacement Project WGB | BWC260595 | FY26 | JD

Location: Ohio
Posted: Jan 22, 2026
Due: Feb 10, 2026
Agency: State Government of Ohio
Type of Government: State & Local
Category:
  • C - Architect and Engineering Services - Construction
  • Z - Maintenance, Repair or Alteration of Real Property
Solicitation No: SRC0000036549
Publication URL: To access bid details, please log in.
Solicitation ID: SRC0000036549
Solicitation Name: Engineering Design - Fan Wall Replacement Project WGB | BWC260595 | FY26 | JD
Original Begin Date: 1/22/2026 4:17:39 PM
Begin Date: 1/22/2026 4:17:39 PM
End Date: 2/10/2026 3:00:00 PM
Inquiry End Date: 2/2/2026 12:00:00 AM
Commodity: Structural engineering
MBE Set Aside: MBE Set Aside
Agency: BWC300810 FACILITIES WGBL
Solicitation Status: Open for Bidding
Solicitation Type: Quick Quote

Solicitation General Information
In an MBE set-aside solicitation, only those bidders/suppliers with an active MBE certification at the time the solicitation closes can submit a response
Solicitation ID
SRC0000036549
Solicitation Name
Engineering Design - Fan Wall Replacement Project WGB | BWC260595 | FY26 | JD
RFx Type
Quick Quote
Lot #
1
Solicitation Status
Open for Bidding
Round #
1
MBE Set Aside
Begin Date
1/22/2026 4:17:39 PM (ET)
Amendment?
End Date
2/10/2026 3:00:00 PM (ET)
Inquiry End Date
2/2/2026 12:00:00 AM
Summary

Provide comprehensive engineering design services for retrofitting existing air handling units (AHUs) with a modern fan wall system, including full replacement of hot water and chilled water coils, in a 33-story commercial high-rise. The goal is to improve HVAC performance, energy efficiency, and system redundancy while minimizing operational disruption.

HVAC Load Calculations: Full-building heating/cooling analysis, internal heat gains, summary report by floor and zone.
Site Investigation: Multiple site visits, document mechanical rooms, verify as-built conditions.
Fan Wall System Design: EC motor arrays, VFD-driven fans, duct transitions, electrical coordination, coil replacement with AHRI-certified hot water and chilled water coils.
Phasing & Implementation Strategy: Maintain HVAC operation during installation, crane access, rigging paths, temporary solutions.
Cost Estimating: Estimate including fan wall equipment, structural modifications, electrical upgrades, demolition, installation labor, coil replacement costs.
Review & Coordination: Present findings, incorporate feedback into final design documents.

A MANDATORY site visit will be conducted at:

**Review the Attached Document "SOW - Fan Wall William Green Building – 33-Story Building, Downtown Columbus"**

**SOW - Estimated Pricing Breakdown document attached must be filled out and submitted with your proposal.

Bidder must be registered with Ohio Buys and have received a payee/supplier ID. If unsure, you can verify at https://ohiopays.ohio.gov/
Pricing must remain valid for a minimum of 90 days.

Predecessor Contract
Process
Ship To
Contracting Entity
BWC300810 FACILITIES WGBL
1 Record(s)
0 Record(s)
Solicitation Documents
Keywords
Search Reset
Title Type Att. Validity End Date Validity End Date
SOW - Estimated Pricing Breakdown | BWC260595 Public Evaluations Documents (Approved)
SOW - Fan Wall WGB | BWC260595 Public Evaluations Documents (Approved)
Building Rules and Regulations for Contracted Service Personnel | BWC260595 Public Evaluations Documents (Approved)
BWC Vendor Inquiry and Submission Guidance | BWC260595 Public Evaluations Documents (Approved)
BWC Procurement Terms and Conditions | BWC260595 Public Evaluations Documents (Approved)
5 Record(s)

Attachment Preview

Test Title

Scope of Work

Fan Wall Engineering Design Services – 33-Story Building, Downtown Columbus

1. Objective

Provide comprehensive engineering design services for retrofitting existing air handling units (AHUs) with a modern fan wall system, including full replacement of hot water and chilled water coils, in a 33-story commercial high-rise. The goal is to improve HVAC performance, energy efficiency, and system redundancy while minimizing operational disruption.

2. Detailed Scope of Services

• HVAC Load Calculations: Full-building heating/cooling analysis, internal heat gains, summary report by floor and zone.

• Site Investigation: Multiple site visits, document mechanical rooms, verify as-built conditions.

• Fan Wall System Design: EC motor arrays, VFD-driven fans, duct transitions, electrical coordination, coil replacement with AHRI-certified hot water and chilled water coils.

• Phasing & Implementation Strategy: Maintain HVAC operation during installation, crane access, rigging paths, temporary solutions.

• Cost Estimating: Estimate including fan wall equipment, structural modifications, electrical upgrades, demolition, installation labor, coil replacement costs.

• Review & Coordination: Present findings, incorporate feedback into final design documents.

3. Deliverables

Deliverable

Description

HVAC Load Calculation Report

PDF with summary tables and assumptions

Fan Wall Design Drawings

Mechanical, electrical, and structural sheets including coil replacement details

Phasing & Implementation Plan

Narrative and diagrams

Preliminary Cost Estimate

Itemized by system and trade, including coil replacement

Review Meeting Presentation

Slide deck and Q&A session

4. Materials & Equipment (Design Basis)

• EC Fan Modules – 6–10 per wall, 208V or 460V

• Filters – MERV 13 pre-filter + MERV 15 final filter

• Hot water and chilled water coils – AHRI certified, full replacement

• Structural Steel – Welded frames, galvanized or painted

• Vibration Isolators – Spring or rubber-in-shear mounts

• Electrical Panels – New disconnects, breakers, and conduit

• BMS Integration – BACnet or Modbus-compatible

5. Estimated Pricing Breakdown

Task/Item

Unit

Quantity

Unit Cost

Total Cost

HVAC Load Calculations

Lump Sum

1

Site Investigation & Documentation

Lump Sum

1

Fan Wall System Design

Lump Sum

1

Structural & Electrical Coordination

Lump Sum

1

Phasing & Implementation Strategy

Lump Sum

1

Preliminary Cost Estimating

Lump Sum

1

Coil Replacement

Lump Sum

1

Review Meeting & Final Deliverables

Lump Sum

1

6. Schedule

• Kickoff & Site Visits: January 2026

• Load Calculations & Preliminary Design: Feb–Mar 2026

• Final Design & Cost Estimate: First week of April 2026

• Review Meeting: April 2026

7. Assumptions

• Building access will be granted for all site visits.

• Existing system drawings and documentation will be made available.

• No hazardous materials present.

• Coil replacement will not require major structural modifications beyond supports.

8. Exclusions

• Construction or installation services

• Permitting and code submission (unless requested)

• Detailed commissioning services (available as an add-on)

This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.
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