ESBD_492828_1777666090321_ADDENDUM#3 SWITCHBOARDS 05-01-26.pdf
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- Attached to
- RFP-LA FORGE HALL GYM HVAC PROJECT
- Solicitation number
- 02-26
- Issued by
- Texas
About this file
This is Addendum No. 3 to the specifications and plans for the SWTXC La Forge Hall Gymnasium HVAC Upgrade project (Number 41406) issued by MEP Engineering, Inc. on behalf of Southwest Texas College on April 30, 2026. The addendum revises multiple electrical system specifications and design drawings to reflect changes in the project scope. Key revisions include the addition of specification section 26 24 13 for switchboards using circuit breaker type equipment, conversion of the electrical system to 120/208V, 3-phase, 4-wire configuration, replacement of the main distribution panel (MDP) with a main switchboard (MSB), relocation of electrical service to the south side of the building, repositioning of various electrical panels and conduit layouts, revision of feeder schedules and load analysis documentation, deletion of transformer schedules, and modification of electrical detail drawings. The addendum includes seven revised or new electrical sheets covering the symbol legend, one-line diagram, demolition floor plan, site plan, first floor power plan, roof plan, and electrical details.
The addendum supersedes all conflicting provisions in the original contract documents and takes precedence as part of the binding project specifications. These revisions reflect significant changes to the electrical infrastructure design, indicating substantive modifications to equipment specifications, service delivery locations, and system configurations that bidders must incorporate into their proposals. The changes affect coordination with mechanical systems, particularly the rooftop unit installations and associated electrical distribution requirements for the HVAC renovation work.
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ADDENDUM
Add. No.: 3
Date: 4/30/2026
Project: SWTXC La Forge Hall Gymnasium HVAC Upgrade
Number: 41406
To: All Bidders From: MEP Engineering, Inc.
Owner: Southwest Texas College
THE FOLLOWING ADDENDA ARE ISSUED TO CHANGE, AMPLIFY OR FURTHER EXPLAIN THE PLANS AND SPECIFICATIONS AND SHALL THEREFORE
TAKE PRECEDENCE OVER THE ORIGINAL CONTRACT DOCUMENTS IN THE EVENT OF CONFLICT.
Specifications:
1. Added specification section 26 24 13 Switchboards – Circuit Breaker Type
SHEET E0.0 LEGEND & GENERAL NOTES - ELECTRICAL
1. Revised Symbol Legend
SHEET E0.1 ELECTRICAL ONE-LINE DIAGRAM & SCHEDULES
1. Revised the one-line diagram to a 120/208V, 3Ph, 4W system.
2. Deleted panel schedule MDP and added panel schedule MSB.
3. Deleted panel schedule HR1.
4. MECS
a. Revised data for the rooftop units.
5. Revised the Feeder Schedule
6. Deleted the Transformer Schedule
7. Added the Load Analysis
SHEET ED3.1 FLOOR PLAN – ELECTRICAL DEMOLITION
1. Added locations for existing panels A, B, C.
SHEET E1.0 SITE PLAN - ELECTRICAL
1. Revised the electric service layout.
SHEET E3.1 FIRST FLOOR PLAN – POWER - ELECTRICAL
1. Moved the electric service to the south side of the building and changed to 120/208V.
2. Added locations for existing panels A, B, C.
3. Revised location for panel LDP.
4.
SHEET E4.1 ROOF PLAN – POWER - ELECTRICAL
1. Revised conduit layout for the new RTU’s.
2. Showed location of existing panel PP1 feed.
SHEET E5.1 ELECTRICAL DETAILS
1. Deleted details 6, 9, 10.
2. Changed detail 7 to detail 5.
3. Changed detail 8 to detail 6 and revised to reflect 6 parallel conduit duct bank.
Attachments:
Specification section 26 24 13
SHEET E0.0 LEGEND & GENERAL NOTES – ELECTRICAL
SHEET E0.1 ELECTRICAL ONE-LINE DIAGRAM & SCHEDULES
SHEET ED3.1 FLOOR PLAN – ELECTRICAL DEMOLITION
SHEET E1.0 SITE PLAN - ELECTRICAL
SHEET E3.1 FIRST FLOOR PLAN – POWER - ELECTRICAL
SHEET E4.1 ROOF PLAN – POWER - ELECTRICAL
SHEET E5.1 ELECTRICAL DETAILS
-END OF ADDENDUM-
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