Exhibit N-Roof Core Report DCF ITB 2223 056.pdf

Addendum No. Four

BHA #202211

ADDENDUM NO. FOUR

To the Plans and Specifications for:

RE-ROOF BUILDINGS 20, 33, 46, AND 31

NORTHEAST FLORIDA STATE HOSPITAL

MACCLENNY , FL

For FLORIDA DEPT. OF CHILDREN AND FAMILIES

Prepared By: ARCHITECT

Bhide & Hall Architects, P.A.

1329-C Kingsley Ave.

Orange Park, FL 32073

Certificate No. AAC000569

Date: February 21, 2023

Index:

Number Discipline Topic

1 Non-Technical Roof coring of Buildings 20, 31, 33, and 46 (Assessment Report)

1 ITEMS TOTAL

Item No. 1, Roof coring of Building 20, 31, 33, and 46.

Existing roof system sampling/coring of all four buildings was conducted on February 17th.by representatives of KBT Contracting, Inc. Results and findings of this survey have been included into the attached Assessment Report, including photographs taken during the visit.

END OF ADDENDUM NO. FOUR

NE FL State Hospital Building Reroof Assessment Report Page 1 of 11 Bhide & Hall Project Number: 202211

Bhide and Hall Architects, P.A.

1329 Kingsley Avenue, Suite C Orange Park, Florida 32073

AAC# 000569

ASSESSMENT REPORT

LOCATION: N.E. Florida State Hospital – Buildings 20,31,33, & 46

7487 South State Road 121

MacClenny, Florida 32063

DATE: 02/17/2023

PRESENT AT SITE: KBT Contracting personnel

REPORT DISTRIBUTION: Bill Bridges, Dept. of Children & Families (email/hard copy) file

BHIDE AND HALL ARCHITECTS, P.A. HAS PERFORMED THIS ASSESSMENT UNDER ITS CONTRACTUAL AGREEMENT

WITH THE OWNER. NO LIABILITY IS ASSUMED BY STATEMENTS MADE HEREIN; BEYOND CONTRACT LIABILITY

REQUIREMENTS. CONTRACTOR IS ADVISED THAT NO CHANGE IN CONTRACTOR PRICE OR TIME CAN BE AUTHORIZED

WITHOUT PROPER ADVANCE APPROVAL IN ACCORDANCE WITH THE REQUIREMENTS OF THE CONTRACT DOCUMENTS.

The purpose of the surveying/field sampling conducted by KBT Contracting personnel was to obtain core samples of the existing roofing systems of all four (4) buildings contained in the

Scope of Work of the project. Personnel present obtained samples at the high and low points of each roof area of the buildings in question, utilizing tools and equipment typical of this process and procedure. Photographs of the cores obtained as well as the depths of roof system as each building are attached hereafter.

It was determined and documented by KBT Contracting personnel that the following roofing system occurs at each building:

Building 20:

Upper Roof – Built-up rock roof over 3” polystyrene insulation over approximately 3” gypsum deck

Lower Roof – Built-up rock roof over 9” to 2” gypsum deck (Photos of cores not available as gypsum disintegrated upon removal)

Building 31:

SBS modified glue roofing over 3” gypsum over 3” polystyrene insulation on mop base on lightweight concrete deck

Building 33:

Built-up rock roof over 3” gypsum over 3” polystyrene insulation on mop base on lightweight concrete deck

Building 46:

Built-up rock roof over 7” to 2” of tapered polyisocyanurate insulation on lightweight concrete deck

NE FL State Hospital Building Reroof Assessment Report Page 2 of 11

Conclusions / Scope of Work Impact

Based on these findings, we recommend the following Scope of Work for the removal of existing roofing systems and installation of new roofing systems at each Building:

Building 20 (no change from Bidding Documents):

Upper & Lower Roofs – Removal of existing built-up roofing system and polystyrene insulation (where present) to expose existing gypsum deck. Installation of new TPO roofing fully adhered to 1/2" exterior gypsum board attached to tapered polyisocyanurate rigid insulation (R-30 min) attached to existing gypsum deck.

Building 31:

Removal of existing SBS modified roofing, gypsum decking, polystyrene insulation, and mop base to expose lightweight concrete deck. Installation of new TPO roofing fully adhered to 1/2" exterior gypsum board attached to tapered polyisocyanurate rigid insulation

(R-30 min) attached to existing lightweight concrete deck.

Building 33:

Removal of existing built-up roofing system, gypsum decking, polystyrene insulation, and mop base to expose lightweight concrete deck. Installation of new TPO roofing fully adhered to 1/2" exterior gypsum board attached to tapered polyisocyanurate rigid insulation

(R-30 min) attached to existing lightweight concrete deck.

Building 46 (no change from Bidding Documents):

Removal of existing built-up roofing system and polystyrene insulation (where present) to expose existing lightweight concrete deck. Installation of new TPO roofing fully adhered to 1/2" exterior gypsum board attached to tapered polyisocyanurate rigid insulation (R-30 min) attached to existing lightweight concrete deck.

Note: For all new roofing systems listed above, Bidders shall confirm with roofing manufacturer that proposed systems will meet design wind pressures listed on Drawings.

END OF REPORT

RECOMMENDATIONS FOR CORRECTIVE MEASURES LISTED IN THIS REPORT

All recommendations for corrective measures listed in this report are based on the professional opinion of Bhide and Hall Architects based on field survey information provided. All measures should be confirmed to ensure that they satisfy all Codes and Regulations applicable to the Scope of Work.

If the local jurisdiction requires documentation by a licensed professional for the corrective measures listed in this report, an Architect and/or Engineer shall be retained to assess the items listed above in order to provide the appropriate documentation for the work to be provided at each location.

NE FL State Hospital Building Reroof Assessment Report Page 3 of 11

Photographs Taken During Site Visit

Building 20:

Building 20 location photo

NE FL State Hospital Building Reroof Assessment Report Page 4 of 11

Building 20 roof core (Upper Roof)

NE FL State Hospital Building Reroof Assessment Report Page 5 of 11

Building 31:

Building 31 location photo

Building 31 roof core at roof high point

NE FL State Hospital Building Reroof Assessment Report Page 6 of 11

Building 31 roof core at roof high point

Building 31 roof core at roof low point

NE FL State Hospital Building Reroof Assessment Report Page 7 of 11

Building 33:

Building 33 location photo

Building 33 roof core at roof high point

NE FL State Hospital Building Reroof Assessment Report Page 8 of 11

Building 33 roof core at roof high point

Building 33 roof core at roof low point

NE FL State Hospital Building Reroof Assessment Report Page 9 of 11

Building 33 roof core at roof low point

NE FL State Hospital Building Reroof Assessment Report Page 10 of 11

Building 46:

Building 46 location photo

Building 46 roof core at roof high point

NE FL State Hospital Building Reroof Assessment Report Page 11 of 11

Building 46 roof core at roof high point