Newport Harbor High School Narrative Changes - Mechanical Addendum 1

Sep 19, 2026

Uploaded by Mason

Narrative changes issued as a Mechanical Addendum 1 for Newport Harbor High School, dated January 26th, 2021. The addendum supplements and revises the contract documents for affected portions of the work while keeping all other conditions unchanged. It provides detailed sheet-by-sheet updates across mechanical plans and demos, including revised sheet indexes, AC unit characteristics, duct support requirements, roof platform modifications, and revised thermostat and control diagrams. It also updates mechanical specifications for roofing sections and includes preinstallational summary and referenced technical definitions.

LanguageEnglish

CategoryPresentations

FormatPDF

Pages48

Reading Time17 min

AccessFree to download

Narrative Changes - Mechanical Addendum 1

Mechanical Plans (Sheets)

Mechanical Specs (Sections)

General Provisions and Definitions

Newport Harbor High School Narrative Changes – Mechanical Addendum 1 January 26th, 2021 Attention: Mr. Lance Bidnick Project: Newport Harbor High School Newport Beach, California 92663 Subject: Narrative Changes – Mechanical Addendum 1 The following changes, omissions, and/or additions are issued to supplement or revise the Contract Documents and shall apply to proposals made and to the execution of the various parts of the work affected thereby, all other conditions shall remain the same. Careful note of the Addendum\#1 shall be taken by all parties of interest so that the proper allowances maybe made in strict accordance with the Addendum, and that all trades shall be fully advised in the performance of the work which will be required of them. Bidder shall acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to do so may subject Bidder to disqualification. Unless specifically changed by this addendum, the remainder of the drawings, documents and specifications shall remain in effect as originally issued MECHANICAL PLANS Sheet T-1 1. Revised sheet index to include added M-2.3 and M-2.4 Detail sheets. Sheet M-0.1 1. Revised sheet index to include added M-2.3 and M-2.4 Detail sheets. Sheet M-0.2 1. Revised characteristics of AC units 1-4. See delta 1 cloud. Sheet MD-1.1 1. Revised demo keynotes \#3 & \#4 specifying duct supports (return and supply) & platform to be replaced new. See delta 1 cloud. 2. Added electrical boxes and demo keynote \#10 specifying enclosure for electrical pipes thru roof tobe replaced new. See delta 1 cloud. 3. Added keynote \#11 specifying existing platform for duct drops and supports to remain. See delta 1 cloud. 4. Added platform for duct supports on drawings. See delta 1 cloud. Sheet M-1.1 1. Revised construction keynote \#1 . Duct supports are specified as new instead of existing as it was shown previously. See delta 1 cloud. 2. Added One ([1.no](1.no)) fall protection device to center of roof. See delta 1 cloud 3. Added electrical boxes and construction keynote \#15 specifying new enclosures for electrical thru roof penetrations to be provided. See delta 1 cloud. 4. Revised construction keynote \#14 specifying TRM1200S as an alternative for fall protection. 5. Added construction keynote \#16 to repair and finish platform for duct supports and drops see detail \#4/M-2.3 provided. Sheet M-1.2 1. Revised thermostat quantities and locations. See delta 1 cloud Sheet M-1.3 1. Revised thermostat quantities and locations. See delta 1 cloud Sheet M-2.1 Detail B 1. Revised detail to display existing platform for duct drops and supports. Revised label to indicate curb is existing and not new as it was shown previously. See delta 1 cloud. 2. Revised detail to include reference to detail F duct thru roof. Detail C 3. Added note referencing detail for alternate installation with higher, pre fab curb to details. See revised sheet Detail D 4. Added note referencing detail for alternate installation with higher, pre fab curb to details. See revised sheet Detail E 5. Revised detail to identify duct supports as new (previously shown as existing) . See delta 1 cloud 6. Revised duct supports to round base and flashing. See delta 1 cloud. 7. Revised detail including enlarged views to reflect new assembly with round base. 8. Added enlarged isometric view for flashing pipe/boot in detail E. Detail F 9. Revised detail F to show existing roof platform and fastening to new curb and deck. Duct drops identified as existing added/included isometric view for flashing See delta 1 cloud Sheet M-2.2 1. Revised detail 2 to identify duct supports as new (previously shown as existing) . See delta 1 cloud 2. Revised detail 2 duct supports to round base and flashing. See delta 1 cloud. 3. Revised detail 2’s enlarged views to reflect new assembly with round base. 4. Added enlarged isometric view for flashing pip

FAQs

What is the purpose of Mechanical Addendum 1 for Newport Harbor High School?

It issues narrative changes, omissions, and additions to supplement or revise the contract documents for proposals and execution of affected work areas, while keeping other conditions the same.

What types of mechanical plan updates are included in the addendum?

The addendum revises sheet indexes and details, updates AC unit characteristics, changes duct support requirements, adds or revises demo keynote instructions, and revises thermostat quantities and related diagrams.

Which specification section for roofing is replaced or updated?

Section 075216.13 SBS Modified Bituminous Membrane Roofing, Cold-Applied replaces section 07 01 50, and an additional mechanical specs section 23 09 00 is added.

Sep 19, 2026

Uploaded by Mason