P-065-242-010 _Project Manual_07-13-2026.pdf

FORT NO. 3 EXTERIOR RENOVATIONS

POINT LOOKOUT STATE PARK

(REBID) DNR PROJECT NO. P-065-242-010

PROJECT MANUAL

For the Renovation of the Exteriors of Fort No. 3’s Four Buildings at the Point Lookout State Park

10465 Point Lookout Road

Scotland, MD 20687

For the Maryland Department of Natural Resources

(REBID) DNR Project Number: P-065-242-010

Project Classification: B

July 13, 2026

DEPARTMENT OF GENERAL SERVICES BOARD OF PUBLIC WORKS

Atif Chaudhry, Secretary Wes Moore, Governor 301 West Preston Street Brooke E. Lierman, Comptroller Baltimore, MD 21201 Dereck E. Davis, Treasurer

DEPARTMENT OF NATURAL RESOURCES

Josh E. Kurtz, Secretary

MINORITY BUSINESS ENTERPRISES ARE ENCOURAGED

TO RESPOND TO THIS SOLICITATION

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TABLE OF CONTENTS

I. Detailed Specifications

A. Scope B. Qualifications of the Contractor C. Site Visit D. Use of the Site E. Schedule of Work F. Standards and Codes G. Terminology H. Materials and Supplies I. Method of Work J. Warranty and Guarantee K. General Requirements L. Attachments

II. Alternates, Unit Prices, and Allowances

III. Department of General Services General Conditions for Construction

Contracts (Under Separate Cover)

IV. Supplementary Specifications

Division 07 – Thermal and Moisture Protection

075500 Modified Bitumen Roofing

Division 08 – Openings

085200.50 Replication of Historical Windows

Division 09 – Finishes

099150 Exterior Painting

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I. DETAILED SPECIFICATIONS FOR THE RESTORATION

OF EXTERIORS TO FORT NO. 3’S FOUR BUILDINGS,

A. SCOPE:

1. This project consists of the Contractor providing all labor, equipment, materials, supplies, insurance, etc., necessary to perform exterior renovations to (4) structures at Fort No. 3 in Point Lookout State Park located at 10465 Point Lookout Road, Scotland, MD 20687

2. Buildings comprising the Fort No. 3 Historical Exhibit. Abbreviations correspond to those on the Fort No. 3 Aerial View (construction drawing A-0):

GH – Guard House EMB – Enlisted Men’s Barracks OQ/SH – Officer Quarters / Supply House OQ - Officers’ Quarters

3. The project includes the following:

a. On all the buildings, repairing the existing board and batten siding. The intent is to cut out the lowest sections of boards (between top and bottom of floor rim board and end joists) on all sides of all buildings and to splice in new pieces of kiln-dried, pressure-treated circular sawn siding.

i. Approximately 565 sq. ft.

b. On all buildings, replacement of any rotted siding above the lowest section described above with new pieces of pressure-treated, circular sawn siding.

c. On all buildings, replacement of the batten strips on all sides with kiln-dried, pressure-treated batten strips matching the thickness and widths of the original battens. On the gables of the Enlisted Men’s Barracks, the batten strips above the horizontal seams in the siding are to be retained.

d. On all buildings equipped with closed-circuit cameras, remove the cameras, escutcheons, and wiring and turn over the Park Facility Manager. Reinstallation of the cameras is not in the Scope of Work.

e. On all buildings, replacement of any rotted board sheathing along the eaves, rakes, or within the area where water has penetrated, with kiln-dried, lumber matching the thickness and widths of the original sheathing boards. Use Unit Price #1.

i. Approximately 150 lin. ft.

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f. On all buildings, removing the paint in its entirety from the exterior surfaces of the board and batten siding to remain; exposed board sheathing along eaves, exposed rafter ends, rake boards; doors, jambs, and their exterior casings; and louvers, jambs, and their exterior casings down to bare wood using an infrared paint stripper or environmentally innocuous chemical paint stripping products..

g. On all buildings, performing Dutchman repairs and patching any surface defects on the wood (unless intrinsic to the wood) with a specified two-part, non-shrink, wood filler compound. Eliminating excessive gaps at mitered corners of door and louver exterior casings using wood wedges and wood filler compound.

h. On all buildings, replacing the awning type windows with new casement windows from an approved manufacturer. Install new circular sawn wood casings around the new windows. Equip the lower sash openings with removable insect screens.

i. On all buildings, reconstructing the stairs to replace any warped wood and restore treads to levelness. Apply premanufactured carpet treads.

j. On the Enlisted Men’s Barracks, reconditioning the four (4) louvers on the gable elevations including the vanes, frames, and casings. Replace any warped or irreparable wood members with pieces of comparable dimensions. Install Z-flashings over the top casings.

k. On all buildings, repainting the entire exteriors, including new windows, existing doors, louvers, and stairs (original and rebuilt), with one coat of primer and one to two finish coats of paint.

i. Approximately 5,000 sq. ft.

l. On all buildings, removing the existing rolled roofing and reroofing with a modified bitumen, 3-ply roofing system consisting of mechanically attached styrene-butadiene-styrene (SBS) base/ply and self-adhered interply and cap sheets. The system is to be installed vertically to replicate the appearance of the original historical roll roofing.

i. Approximately 4,600 sq. ft.

m. On all buildings, precedent to the specified modified bitumen roofing system, replacing damaged board sheathing with new boards of same dimension.

i. See Allowance #1 for an estimated 1,000 sq. ft.

n. On all buildings, removing Portland cement mortar in the joints on all sides of the portions of the chimneys above the roof lines to a depth of ½ inch and repointing with a natural hydraulic lime mortar.

i. Approximately 64 sq. ft.

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o. On all buildings, restoring the faces of spalled bricks on the chimneys above the roof lines with a natural hydraulic lime patching mortar. Alternatively, replacing spalled brick units with commercially available hand-molded brick.

p. On all buildings, installing new metal step flashings around all chimneys as detailed on the drawings.

q. ALTERNATE #1: On all buildings, replacing the awning type windows with new casement windows from an approved manufacturer. Install new circular sawn wood casings around the new windows. Equip the lower sash openings with removable insect screens.

Note: The accuracy of all applicable dimensions and quantities associated with the work is the responsibility of the Contractor. All information is to be confirmed to the Contractor’s satisfaction prior to bidding. The State will not be held responsible for the Contractor’s failure to do so.

B. QUALIFICATIONS OF THE CONTRACTOR:

1. The Contractor shall be licensed in the State of Maryland as a General Contractor to perform work associated with this project.

2. The Contractor shall have a minimum of five (5) years of experience performing similar construction projects. Upon request, the Contractor shall supply a list of other similar, completed projects to the Procurement Officer for review.

C. SITE VISIT:

1. All prospective bidders are encouraged to attend the Pre-bid conference meeting and familiarize themselves with the requirements for the project. Failure to attend the Pre-bid conference meeting, or visit the site, will not relieve the successful bidder from complying with the requirements of these specifications at no additional cost to the State.

2. The Contractor shall have investigated the project site and satisfied themselves, as to the conditions affecting the work, including but not limited to: access and physical conditions at the site, the character of equipment, and the facilities needed preliminary to, and during prosecution of, the work.

3. The Contractor shall satisfy themselves as to the character, quality, and quantity of surface and subsurface materials, or obstacles, to be encountered insofar as this information is reasonably ascertainable from an inspection of the site.

4. Please contact the Maryland Park Service Manager, Dawn Letts at (301) 872-5688 prior to any site visit outside of the pre-bid conference.

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D. USE OF THE SITE:

1. Any damage to property, either inside or outside, shall be the responsibility of Contractor.

Contractor shall bear all costs necessary to repair, replace or restore any property damaged.

2. The Contractor shall assume full responsibility for protection and safekeeping of products stored on premises.

3. The Contractor shall at all times be responsible for the security of Contractor’s facilities and equipment. MPS/DNR will not take responsibility for missing or damaged equipment, tools, or personal belongings of Contractor or his Subcontractors.

4. The project area does not offer any utilities: no electricity or potable water for use in performing the work. The Contractor shall be responsible for providing his own portable power and water sources. The Contractor and his Subcontractors may use the nearby the Restroom facilities for personal care needs.

E. SCHEDULE OF WORK

1. Work shall be scheduled through and approved by the DGS Inspector, DNR Project

Manager and MPS Facility Manager. The Contractor shall perform all work Monday through Friday during the normal working hours of 8:00 am to 5:00 pm. unless approved by DGS Inspector and DNR Project Manager in writing. No work shall be performed on state or federal holidays.

2. The Contractor shall notify the DGS Inspector and DNR Project Manager seven (7) days prior to his start of work. He shall coordinate with the DGS Inspector, DNR Project Manager, and MPS Facility Manager the dates of the Work Initiation Conference, the work, and any closures required.

3. Use of the premises by the Contractor is to be limited to specified work areas and approved storage areas.

F. STANDARDS AND CODES:

1. All work shall be performed in a top-quality workmanship manner in accordance with the standards of the trade.

2. The Contractor shall comply with OSHA (Occupational Safety and Health

Administration) and MOSHA (Maryland Occupational Safety and Health Administration) regulations regarding construction safety and health standards throughout the duration of the Project.

3. All Work shall be performed in accordance with the applicable code requirements in the

2021 Maryland Building Performance Standards (MBPS) consisting of amended versions of the following ICC codes and secondary references:

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• International Building Code (IBC)

• International Residential Code (IRC)

• International Energy Conservation Code (IECC)

• International Plumbing Code (IPC)

• International Mechanical Code (IMC)

• National Electric Code (NEC)

• International Energy Conservation Code (IECC)

• Maryland Accessibility Code (MAC)

• National Fire Protection Association (NFPA) Codes referenced in the aforementioned ICC codes.

All work shall, furthermore, be performed in accordance with the following State of Maryland and Federal Government standards:

• DGS Procedure Manual for Professional Services

• Maryland Department of Transportation-State Highway Administration’s (SHA)

“Standards Specifications for Construction and Materials

• The Maryland Historical Trust Act

• The Secretary of the Interior’s Standards for the Treatment of Historic Properties

(36 CFR Part 68, 1995)

G. TERMINOLOGY:

Historical – Characterizing the period dating to the building’s original construction.*** Most historical architectural features in the Project are existing unless otherwise noted.

Reclaimed Old Growth Wood - Wood reclaimed from demolished or dismantled structures in which the wood species was harvested from historically long-established forests in which the trees grew over hundreds of years. The wood is characteristically dense-grained, in the range of 20-25 growth rings per inch; stronger; more rot-resistant; and more stable in terms of resisting warpage, splitting, or cupping than new growth trees harvested after only 15 to 20 years.

Recondition – As part of the restoration process, as a last restore, replace irreparable components of the original historical construction with comparable matching the original in terms of material, dimension, pattern, and configuration.

Repair - To restore after injury, deterioration, or wear; to mend; to renovate by such means as appropriate and to supply such materials and labor as necessary to render the item to be repaired sound, solid, true, plumb, square, even, smooth and fully serviceable; or to bring into conformity with contract requirements. Upon completion of such repair it must be, unless otherwise stated, rendered to such condition as to present a first-class finished work, or in instances where the repaired item serves as a base for additional finish, the repaired work must he such as to permit a first-class finish, to be applied without extra cost to the State. When the word “repair” is used in connection with machinery or mechanical equipment it shall mean, in addition to the above, rendering the equipment completely serviceable and efficient and ready for the normal use for which it was intended.****

Restore/Restoration – Distinctive architectural features characterizing the ‘historical’ period

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dating to the building’s original construction will be repaired rather than replaced. The goal is to return the features to their original appearance and functionality.***

*Based on Code of Maryland Regulations (COMAR) 26.16.01-02. Definitions under Chapter

26.16.01. Accreditation and Training for Lead Paint Abatement Services.

**Based on United States Housing and Urban Development (HUD) Title 24, Part 35 – Lead-based Paint Poisoning Prevention in Certain Residential Structures.

***Based on the United States Secretary of the Interior’s Standards for the Treatment of Historic

Properties: Restoration as a Treatment and Standards for Restoration.

****Taken from Section 1.01 Definitions and Conditions of the State of Maryland Department of Natural Resources General Conditions Between Owner and Contractor.

H. MATERIALS AND SUPPLIES:

1. General:

a. All materials shall be as specified or approved equal by the DNR Project Manager. In the event the Contractor would like to substitute materials other than those that have been specified, the Contractor shall submit to the DNR Project Manager all pertinent data to determine the or-equal status. This material shall be submitted to the DNR Project Manager a minimum of ten (10) days prior to the bid opening. The DNR Project Manager shall notify the Contractor within five (5) days as to the or-equal status.

b. This work is being performed on a historical property and therefore the materials used must align with the historical aesthetic of the property. Substitute materials must be of the same quality AND have the same aesthetics as those specified herein.

c. All materials shall be new and where applicable shall be delivered to the job site with labels intact and legible.

d. The Contractor shall be responsible for the coordination, off-loading and proper storage of all materials and supplies up until the time of final inspection.

e. Materials shall be stored in a safe area out of the way of traffic. Any on-site storage location shall be approved by the MPS Facility Manager prior to the storage of any materials on-site. All materials shall be stored up off the ground surface and should be protected from the weather with a waterproof covering.

Any special storage instruction required by the material’s manufacturer shall be performed by the Contractor.

f. Any materials or supplies, which have not been specifically mentioned, but are necessary for the complete, safe, and satisfactory completion of the project, shall

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be provided by the Contractor.

3. Basis-of-Design Products and Systems; Product Standards.

3A. Board & Batten Siding:

a. Replacement Wall Sheathing: Material for replacing damaged or missing planks and battens shall be preservative pressure-treated circle-sawn timber, kiln-dried after treatment, grade #2 or better; softwood species such Southern Yellow Pine, Eastern White Pine, Douglas Fir, with choice dependent on price and availability.

Manufactured in accordance with current SPIB Grading Rules and AWPA specifications. It is critical that the boards and battens be the same dimension as the existing boards and battens left in place. Therefore, plan with the shrinkage of the wood in mind during all stages of the process of milling, treatment and drying of the lumber.

i. Siding boards are approximately 1-inch thick and vary in width between 8” and 10.”

ii. Batten strips are approximately 1-inch thick and average 2-1/2” wide.

iii. Level of Protection: AWPA U1 Use Category UC4B Ground

Contact Heavy Duty.

iv. A source confirmed to be able to supply the wood is Arko Timber

Works, Inc., which is located at P.O. Box 252, Forest, Virginia 24551; 434-942-8510; www.arkcotimberworks@gmail.com

b. Fasteners for siding boards and battens shall be Hardened Cut Masonry Nails, smooth shank style, 0.120” dia. x 2-1/2” long, medium carbon steel, hot-dip galvanized to specification ASTM A-153.

i. Cut nails currently on buildings were manufactured by the W.H.

Maze Company out of Peru, Illinois.

a. Apply a preservative, such as copper naphthenate with minimum 2% copper content, to field-cut ends and nail holes in above-ground and ground-contact, pressure treated lumber.

3B. Replacement Material for Exterior Wood Trim:

a. Lumber for replacement of irreparable wood components and partial repair of wood components as Dutchman inserts shall be Southern Yellow Pine or Douglas Fir, sized to match existing members. Acquire rough sawn textured wood to match the existing where occurring.

3C. Replacement Material for Wood Stairs and Handrails:

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a. Southern yellow pine (SYP) lumber, treated with waterborne preservatives in accordance with AWPA Standard UC3B ABOVE GROUND Exposed;

kiln-dry to accept specified linseed oil paint.

3D. Stripping, Preservative Treatment, Repair, and Painting:

a. Infrared Paint Removal Technology or Alternative Chemical Means of

Removal:

i. Wood siding, doors, stairs, louvers, soffits, fascia and rakes shall be stripped down to bare wood using the infrared paint removal device or any of the chemical removal products specified in Section 09 91 50 Exterior Painting.

b. Board & Batten Siding Repair Materials:

i. Wood Filler for the Repair of Deep Damage (i.e., greater than superficial) to wood components shall be Abatron WoodEpox® Two-part Epoxy Wood Filler, or an approved equal product.

(1) Wood Hardener (where wood is rotted) shall be Abatron

LiquidWood®, Two-part wood hardener or an approved equal product.

ii. Wood Filler for the Repair of Superficial Damage to wood components shall be Illbruck Linseed Oil Putty OS110, or an approved equal product.

c. Paint System on Bare Wood and New Wood Components:

i. Siding, doors, windows, louvers, finished openings, and fascia and rakes shall be primed and finish-painted with the Linseed Oil Paint system specified in Section 09 91 50 Exterior Painting.

ii. New windows shall also be protected with Linseed Oil Paint. This is prescribed in Section 08 52 00.50 Replication of Historical Windows.

3E. Safety Treads for Existing Stairs:

a. Basis-of-Design Product: Finehous® Carpet Treads with Rubber Backing, polypropylene non-woven carpet tread, or an approved equal product.

3F. Brick Chimney Repair:

a. Brick Patching Material shall be Saint-Astier® Lithomex, Pure Natural Hydraulic Lime (NHL) and aggregates blend repair mortar, or an

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approved equal. Color is to be customized by the supplier, LimeWorks.us, based upon samples taken of loose brick material at the site.

b. Brick Repointing Mortar: DeGruchy’s Ecologic® NHL Mortar SCG, coarse sand grade, available through LimeWorks.us.

c. Replacement Brick: Approximate the existing molded modular size, 4-inch-wide x 2-1/4-inch-high x 8-inch-long; color: blend of red and brown;

sand molded texture. Cut new units to match size of original units being replaced.

i. Basis-of-Design product: Belden Antique Colonial Series, ‘Queensport Blend’ Jumbo Brick available from Potomac Valley Brick & Supply Co.

ii. If first option is not available, then Belden Antique Colonial ‘Kingsport’ Jumbo Blend available from same source.

d. Sealant and Backer Rod: Burnt Sand Mastic with Lead Wool Backing. See specification Section 07 55 00 Modified Bitumen Roofing for formula.

3G. Repair/Replacement of Roof Board Sheathing and Eaves Boards: Refer to supplementary specification section 07 55 00 Modified Bitumen Roofing.

i. New Board Sheathing: 1” x 6” (actual dimensions) rough cut yellow pine or fir, kiln dried, Grade #2 or better.

3H. Modified Bitumen Roofing System – 3-Ply System for steep roofs: See supplementary specification Section 07 55 00 Modified Bituminous Roofing.

Note that the roofing system has been specially designed by the manufacturer to work in this context for the sake of replicating the historical look of the original roll roofing.

3I. ALTERNATE #1: Replacement Single-Hung Wood Windows with Casings:

a. Custom-fabricated, True Divided Lite Casement Windows made of 8/4 Red Grandis a fitted with Antique (i.e., wavy) Glass (15 Lites). Three sizes to match the existing rough openings in the four buildings.

i. Guard House: Two (2) 36” x 66” windows, to be verified by GC.

ii. Officer’s Quarters & Officer’s Quarters/Supply House: Six (6) 36” x 58” windows; to be verified by GC.

iii. Officer’s Quarters & Enlisted Men’s Barracks: Twelve (12) 36” x

62” windows.

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b. Replacement windows are specified in specification Section 08 52 00.50 Replication of Historical Wood Windows.

c. Perimeter Sealant and Backer Rod: Burnt Sand Mastic with Oakum Joint Backing. See specification Section 08 52 00.50 Replication of Historical Wood Windows for formula.

d. Removable Insect Screens for Lower Sash:

i. Basis-of-Design Product: W.B. Marvin Adjustable Window Screens consisting of plated, gliding steel rails for fingertip adjustment, wood ends and coated aluminum screening.

ii. Provide one for each single-hung window unit for twenty (20) total.

I. METHOD OF WORK:

1. General:

a. All materials and products shall be as specified or approved equal product as permitted by the DGS Inspector and DNR Project Manager. In the case of materials or products that the Contractor would like to substitute as approved equals, the Contractor shall submit to the DGS Inspector and DNR Project Manager all pertinent data to demonstrate that the materials or products are of similar quality and performance to the original specified. This pertinent data shall be submitted to the DGS Inspector and DNR Project Manager a minimum of ten

(10) days prior to the bid opening. The DGS Inspector and DNR Project Manager shall notify the Contractor within five (5) days of the submittal whether the substitution is approved.

b. This Work is being performed on historical structures and, therefore, the materials must match the historical architectural character of the exteriors being renovated.

Substitute materials must be of like quality AND architectural character as the basis-of-design materials and products specified herein.

c. The Contractor shall coordinate all work with the various trades and material suppliers to complete the project expeditiously and within the time limits of the contract. The sequence of events shall be left up to the Contractor.

d. All work shall be performed in the best and most professional manner possible by mechanics skilled in their respective trades.

e. All work shall be performed to minimize disruption to facility operations. It is understood that the Contractor shall maintain accessibility throughout the project.

f. The Contractor shall adhere to OSHA/MOSHA regulations throughout the project

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to ensure the safety of his/her employees, state employees, and the public.

g. The Contractor shall maintain the work site(s) in a safe, neat, and orderly manner throughout the entire project. The Contractor shall take steps to prevent the accumulation of debris at the job site(s).

h. Any work that has not been specifically mentioned but is reasonably implied and is necessary for the safe and the satisfactory completion of the project, shall be performed by the Contractor.

i. The Contractor shall schedule work and take appropriate precautions to protect the building and its contents from damage during the course of roof and siding replacement. Special care should be taken to protect from weather-related damage, including but not limited to water intrusion, during construction. The contractor is liable for any damage to the building, substructure and/or building contents due to failure to provide adequate protection from weather during roof or siding replacement.

2. Execution of Specific Tasks:

2A. Board & Batten Siding:

a. Remove the bottom of the siding boards up to 2 inches below the tops of the rim and end joists within. Cut edges are to be level around the building.

b. Temporarily protect the wood rim joists left exposed by the removal of the siding using a high-density polyethylene material (e.g. Tyvek House Wrap).

c. Replace the removed wood with new, specially ordered, circular-sawn boards and battens that are preservative pressure treated. It is critical that the boards and battens be the same dimension as the existing boards and battens left in place. Therefore, plan with the shrinkage of the wood in mind during all stages of the process of milling, treatment and drying of the lumber.

d. Apply the specified preservative to all field-cut ends and nail holes in the spliced in pressure-treated siding. Ensure that the preservative treatment is fully dry before applying the linseed oil paint and that it does not impede the bonding and penetration of the linseed oil paint.

e. The joints between the new board and batten siding and the existing are to be concealed with the specified wood filler product struck flush with the surrounding surfaces for a seamless appearance. See Detail 3/A-6 for milling the wood edges to accept putty.

f. The bottom of the new siding is to be aligned with the bottoms of the existing rim and end joists so that the latter remain concealed.

g. In preparation for stripping the existing paint from the siding, remove any existing closed-circuit cameras, escutcheons, and wiring and turn over the MPS Facility Manager. Cameras will not be reinstalled.

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h. The remaining siding; along with doors, windows & louvers, door frames;

rake and fascia boards; and exterior, exposed rafters or truss chords are to be stripped of paint down to bare wood using either the preferred method, an Infrared Paint Stripper, or if not practical, one of the environmentally innocuous chemical products specified in supplementary specification section 099150 - Exterior Painting.

i. All existing mitered casings around doors, louvers, and windows are to be replaced with new wood casings installed with edges butted.

j. The conditions of the wood siding and wood components are to be checked for defects and repairs performed. Repairs include resecuring loose members, replacing severely water-damaged members with new, and patching deep and superficial damage with the specified wood compound.

k. Dispose of any construction debris off Maryland state property in accordance with federal, state, and local guidelines for the proper disposal of the waste generated.

2C. Dutchman Repairs of Existing Exterior Trim:

a. Repair small, localized damage to wood trim by cutting out a geometric piece of the board slightly larger than the damaged area and replacing it with a piece of wood cut and fit to match.

b. Utilize ‘yellow glue’ (polyvinyl acetate glue) such as Elmer’s Carpenter Wood Glue or an approved equal product.

c. Localized damage may also be repaired using the specified epoxy resin product, especially where reconstructed wood surface is not conspicuous.

2D. Reconstruction of Stairs:

a. Replace any warped wood members. Check for rot and replace with specified ground-contact rated preservative-treated lumber. Apply the specified preservative to all field-cut ends and nail holes in the spliced in pressure-treated lumber.

b. Treads shall be restored to levelness.

c. Hand railings shall be resecured if their construction is wobbly.

d. Apply the specified exterior stair carpet treads with heavy duty construction glue.

2E. RePainting:

a. In strict accordance with the paint product manufacturer’s requirements, apply one coat of primer and one finish coat to all wood siding, doors, windows & louvers, frames & casings; rake and fascia boards; and exterior, exposed rafters or truss chords when environmental conditions are conducive.

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b. The basis-of-design paint product acts as both a primer and a finish coating. Substitute paint products submitted for approval are expected to perform likewise.

2F. Replacement Single-Hung Wood Windows with Casings:

a. Windows shall be installed by Carpenters employed by the Fabricator or else certified by the Fabricator, having the requisite experience in the installation of historical, replica single-hung windows of the type specified and fabricated for the Project.

b. Refer to the details on Construction Drawing A-6 for the appearance of installed windows. As shown each window unit is to be protected with new metal zee flashing across the top casing.

c. Install beads of silicone sealant onto sill of rough opening and let the weight of the window settle into it. Sealant shall not be visible in the finished installation.

d. Visible perimeter sealant shall consist of the specified burn sand mastic with oakum as joint backing.

2G. Chimney Brick Repair:

a. Using either a hand chisel or pneumatic chisel, remove existing Portland cement mortar down to a minimum depth of 1/2 inch.

b. Repointing using the specified Natural Hydraulic Lime mortar and tool to a concave profile.

c. Repair spalled bricks on the chimneys using the specified brick patching material. Alternatively, replace spalled units with the specified, commercially available hand-molded modular brick. Cut replacement bricks to match the height (and length as necessary) of the original brick.

d. Refer to Part 2B above and Construction Drawing A-2 for the installation of flashings around the existing brickwork.

2H. Replacement of Board Sheathing and Eaves Boards:

a. Replace severely damaged board sheathing in accordance with the criteria described in supplementary specification section 075500 Modified Bituminous Roofing. Replacement of sheathing shall be done for within the Allowance #1 established.

b. If board sheathing beyond the specified allowance is identified as needing to be replaced, report the instances to the DGS Construction Manager/Inspector and DNR Project Manager. The DGS Inspector and DNR Project Manager may authorize the replacement of additional sheathing in accordance with Unit Price #1.

2I. Modified Bitumen Roofing System:

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a. The specified roofing system has been specially designed by the manufacturer to work in this context for the sake of replicating the historical look of the original roll roofing. Consult Eric Small, GAF Territory Manager with any questions. Email: eric.small@gaf.com;

Ph.: 609-234-4485.

b. The General Contractor, Roofing Contractor, DGS Inspector, and DNR Project Manager shall participate in a video conference with Mr. Eric Small with GAF Design Services to go over the aspects of the roofing project.

c. Remove existing roofing and any underlayment down to bare board roof sheathing.

d. Carefully remove all flashing around chimneys.

e. Refer to specification Section 07 55 00 Modified Bituminous Roofing for instructions for installing the new roofing and flashings across all buildings.

2J. Chimney Flashing:

a. Refer to Construction Drawing A-1 for details of the chimney flashings.

The interface the modified bitumen base/ply sheets with the chimney flashing shall be as follows.

b. Dispose of any construction debris off Maryland state property in accordance with federal, state, and local guidelines for the proper disposal of the waste generated.

J. WARRANTY AND GUARANTEE:

1. The Contractor shall fully guarantee the work covered under this contract for a period of five (5) years from the date of acceptance and against defects in materials and workmanship.

2. Any defects found within the five (5) year warranty period shall be promptly repaired or replaced by the Contractor at no additional cost to the State.

3. The Contractor shall provide the DGS Inspector and DNR Project Manager all manufacturers’ warranties, guarantees, owner’s manuals, etc., related to this project. All information shall be neatly compiled and be submitted to the DGS Inspector and DNR Project Manager at the time of the Substantial Completion.

4. Acceptance by the DGS Inspector and DNR Project Manager of any procedures, materials, workmanship, or final product shall not relieve the Contractor of his contractual requirements.

mailto:eric.small@gaf.com

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5. All work is subject to the inspection and approval of the DGS Inspector and DNR Project

Manager.

K. GENERAL REQUIREMENTS:

1. The requirements stated in the latest edition of Department of General Services

“Instructions to Bidders for Construction Projects” and “General Conditions for Construction Contracts” are hereby made part of these documents.

2. All work shall be coordinated with the MPS Facility Manager, DGS Inspector, and DNR

Project Manager during the work initiation meeting.

3. The contract shall be for a period of 120 calendar days.

4. The complete project is subject to the inspection and approval of the DGS Inspector and the DNR Project Manager.

5. Deviation from the manufacturer's instructions or this specification will not be acceptable.

6. The Contractor shall take all necessary precautions and measures to protect all properties from damage. He shall repair all damage caused by his operation to all public and private property including roads, walks, curbs, utilities, trees, shrubs, plantings, etc., and leave the property in good condition and/or at least equivalent to the condition found.

Be advised that the Fort No. 3 project area is an historically rich archaeological site.

Though the fort’s original wood frame and masonry structures were dismantled and removed from the site at the end of the Civil War, the earthen ramparts remained and several artifacts from that era are likely to remain below grade. Consequently, the Work of this contract is not to physically disturb the ramparts, fort floor and the surrounding moats.

7. The Contractor shall make his own arrangements to acquire any temporary utility service which he requires to perform this contract. Any expenses incurred must be paid by the Contractor.

L. ATTACHMENTS:

The following documents are attached and are an integral part of the construction documents:

Construction Documents (24” x 36” format):

CS-1 Cover Sheet CS-2 Project Background; Codes & Standards

(REBID) DNR PROJECT NO. P-065-242-010 I-18

A-1 Buildings within the Scope of Work A-2 Guard House Repair Elevations A-3A Enlisted Men’s Barracks Repair Elevations A-3B Enlisted Men’s Barracks Repair Elevations Continued A-4 Officer Quarters / Supply House Repair Elevations A-5 Officers' Quarters Repair Elevations A-6A Siding Details A-6B New Casement Window Details

A-7 Chimney Flashing Details

Supplementary Specifications (8-1/2” x 11” format):

Division 07 – Thermal and Moisture Protection:

075500 - Modified Bituminous Roofing

Division 08 – Openings:

085200.50 - Replication of Historical Wood Windows

Division 09 – Finishes:

099150 - Exterior Painting

(REBID) DNR PROJECT NO. P-065-242-010

II. ALTERNATES, UNIT PRICES AND ALLOWANCES

A. ALTERNATES:

Alternate #1 – Fabrication and Installation of New Casement Windows.

B. UNIT PRICES:

Unit Price #1 - The Contractor shall insert a cost per linear foot X for an estimated 250 linear feet (= Total Unit Price #1) to replace damaged roof board sheathing, assumed to be 1” x 6” (actual dimensions) rough cut yellow pine or fir, kiln dried, Grade #2 or better.

C. ALLOWANCES:

NONE.

NOTE 1: The base bid shall include all work associated with the project in addition to the Unit Prices for the quantity of work requested. Your base bid amount will change if unit price quantities are added or deducted as per COMAR. Base bid shall not include add alternates. If add alternates are awarded bid evaluations shall consider the total of the base bid and the chosen add alternates.

NOTE 2: The Contractor shall incorporate all costs associated with transportation, fuel, maintenance on equipment, employee salary, benefits, overhead, profit, etc., in the Unit Price. Unit Prices will be used to increase/decrease the contract price based on actual quantities installed, in accordance with the Instructions to Bidders for Construction Projects (3.B.3)"

NOTE 3: Should there be an increase or decrease in the actual units installed of 20% or more from the Engineer's estimate, the Contractor shall provide adjusted pricing and apply to all quantities. After completing all work associated with each of the unit prices, the Contract shall be adjusted based upon the actual units installed and the revised unit price.’

DNR PROJECT NO. P-065-242-010

IV. SUPPLEMENTARY SPECIFICATIONS

POINT LOOKOUT STATE PARK – REHABILIATION

OF BUILDING EXTERIORS AT FORT NO. 3 07 55 00-1

SECTION 07 55 00

MODIFIED BITUMINOUS ROOFING

PART 1 GENERAL

1.01 SCOPE

A. The project includes, but is not limited to the following:

1. Removing the existing rolled roofing on the four Fort No. 3 buildings and reroofing with a modified bitumen, 3-ply roofing system consisting of a mechanically attached styrene-butadiene-styrene (SBS) base/ply, self-adhered interplay, and self-adhered cap sheet. System is to be installed vertically to replicate the appearance of the original, Civil War-era historical roll roofing.

B. Buildings comprising the Fort No. 3 Historical Exhibit. Abbreviations correspond to those on the Fort No. 3 Aerial View on sheet A-1:

1. GH – Guard House

2. EMB – Enlisted Men’s Barracks

3. OQ/SH – Officer Quarters / Supply House

4. OQ - Officers’ Quarters

1.02 SUMMARY

A. Section includes:

1. Asphaltic modified bituminous roofing

2. Replacement roof planks

3. Flashings

B. Related Sections:

1. Detailed Specifications for Rehabilitation of Exteriors to Four Buildings at Fort No.

3, Point Lookout State Park.

1.03 REFERENCES

A. Factory Mutual (FM Global) - Approval Guide

B. Underwriters Laboratories (UL) - Roofing Systems and Materials Guide (TGFU R1306)

C. American Society for Testing and Materials (ASTM) - Annual Book of ASTM Standards

POINT LOOKOUT STATE PARK – REHABILITATION

OF BUILDING EXTERIORS AT FORT NO. 3 07 55 00- 2

D. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - Architectural Sheet Metal Manual

E. Asphalt Roofing Manufacturers Association (ARMA)

F. National Roofing Contractors Association (NRCA)

G. American Society of Civil Engineers (ASCE)

1.04 DEFINITIONS

A. Roofing Terminology: Refer to ASTM D1079 and the glossary of the National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual for definitions of roofing terms related to this section.

1.05 PERFORMANCE REQUIREMENTS

A. Provide an installed roofing membrane and base flashing system that does not permit the passage of water and will withstand the design pressures calculated in accordance with the most current revision of ASCE 7.

B. The Installer shall provide all primary roofing materials that are physically and chemically compatible when installed in accordance with manufacturers’ current application requirements.

1.06 SUBMITTALS

A. Product Data: Provide product data sheets for each type of product indicated in this section.

B. Shop Drawings: Provide manufacturer’s standard details and approved shop drawings for the roof system specified.

C. Samples: Provide samples of fasteners and roll goods for verification of quality.

D. Certificates: Installer shall provide written documentation from the manufacturer of their authorization to install the roof system, and eligibility to obtain the warranty specified in this section.

1.07 QUALITY ASSURANCE

A. Manufacturer’s Qualifications: The asphaltic modified bituminous roofing shall provide a roofing system that meets or exceeds all criteria listed in this section.

B. Installer’s Qualifications:

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1. Installer shall possess a minimum of 24 months' experience installing polymer-modified bitumen roof systems, within the chosen attachment method designation and competency, applying cap sheets in the field and wall flashings at inside and outside corners and chimneys.

2. Provide a minimum of client three (3) references for completed modified bitumen installations.

C. Source Limitations: All components listed in this section shall be provided by a single manufacturer or approved by the primary roofing manufacturer.

D. Stage-by-Stage Documentation: Capture multiple photos during and after each stage of the roofing system application. Take photos of the bare wood deck showing the conditions of the existing skip sheathing, exposed rafters, and brick chimney penetration.

Take photos of each step in the process including the application of the overlay sheathing with fastening pattern; application of base/plies, inter-plies, cap sheets and their overlaps;

mechanical fastenings; edge flashings with fastening frequency; and chimney flashings.

Furnish photos to the DGS Inspector and DNR Project Manager upon request. Provide copies of all photos in an album as part of the Close-out Documents.

E. Final Inspection: Manufacturer’s representative shall provide a comprehensive final inspection after completion of the roof system. All application errors must be addressed, and the final punch list completed.

1.08 PRE-INSTALLATION CONFERENCE

A. Prior to scheduled commencement of the roofing installation and associated work, conduct a meeting at the project site with the General Contractor, Installer, the modified bitumen roofing system Manufacturer’s Representative, Park Facility Management Staff, DGS Inspector, DNR Project Manager, and any other persons directly involved with the performance of the work. The installer shall record conference discussions to include decisions and agreements reached (or disagreements) and furnish copies of recorded discussions to each attending party. The main purpose of this meeting is to review foreseeable methods and procedures related to roofing work.

1.09 REGULATORY REQUIREMENTS

A. All work shall be performed in a safe, professional manner, conforming to all federal, state, and local codes.

1.10 DELIVERY, STORAGE AND HANDLING

A. Deliver all roofing materials to the site in original containers, with factory seals intact.

All products are to bear the manufacturer’s label.

B. Store all pail goods in their original undamaged containers in a clean, dry location within their specified temperature range.

OF BUILDING EXTERIORS AT FORT NO. 3 07 55 00- 4

C. Store roll goods on-end on pallets in a clean, dry, protected area. Take care to prevent damage to roll ends or edges. Do not double stack modified bitumen products.

D. Do not expose materials to moisture in any form before, during, or after delivery to the site. Reject delivery of materials that show evidence of contact with moisture.

E. Remove manufacturer supplied plastic covers from materials provided with such. Use “breathable” type covers such as canvas tarpaulins to allow venting and protection from weather and moisture. Cover and protect materials at the end of each workday. Do not remove any protective tarpaulins until immediately before the material is to be installed.

F. Materials shall be stored above 55°F (12.6°C) a minimum of 24 hours prior to application.

1.11 PROJECT CONDITIONS

A. Weather

1. Proceed with roofing only when existing and forecasted weather conditions permit.

2. Ambient temperatures must be above 45°F (7.2°C) when applying water-based adhesives.

1.12 WARRANTY

A. Provide Manufacturers standard warranty with single source coverage and no monetary limitation, where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.

1. Duration: Twenty (20) years from the date of completion.

PART 2 PRODUCTS

2.01 ACCEPTABLE MANUFACTURER

A. Basis-of-Design System Manufacturer: GAF, Commercial Roofing Products Division, which is located at: 1 Campus Drive; Parsippany, NJ 07054; Toll Free Tel: 877-423-7663 (option 4, then option 2); Email: designservices@gaf.com; Web: www.gaf.com

B. Requests for substitutions will be considered in accordance with provisions of Sections

5.04 – Substitutions and 5.06 – Approved Equal in the MD DGS General Conditions for Construction Contracts.

2.02 REPLACEMENT ROOF SKIP SHEATHING

http://www.gaf.com/

OF BUILDING EXTERIORS AT FORT NO. 3 07 55 00- 5

A. Material for replacing damaged or missing roof skip sheathing shall be rough-cut softwood planks, kiln dried, grade #2 or better. Species, thickness, and width should approximate the original being replaced. Planks are thought to be 1” thick by 6” wide;

actual dimensions are to be verified.

B. Assess the existing board sheathing with a pre-roofing inspection, a nailing inspection, and a final post-installation check.

C. In conducting the pre-roofing inspection from the outside, look for visible dips, sagging rooflines, or wavy or buckled roofing membrane, which indicate potential damage to the sheathing.

D. From the inside, look for water stains, mold, or active leaks on the underside of the sheathing. Feel for soft or spongy spots that signal serious rot.

E. Once the old roofing is completely torn off and the existing skip sheathing and rafters are fully exposed, check the framing and boards for dry rot, mold, warping, or termite damage. Bad boards should be removed and replaced.

F. Verify that the existing rafters are straight and in alignment. If any are twisted, solid blocking may be required to create an even surface for the new sheathing. If encountered notify the DGS Construction Manager/Inspector and DNR Project Manager for a decision.

G. After the replacement sheathing has been installed, conduct a nailing inspection of ALL board sheathing to confirm that the correct nail size and spacing was used with the nail heads flush against the sheathing. Minimum prescriptive nailing is often 8d common nails, a minimum of two into supporting framing.

H. The final post-installation check shall be conducted by the Manufacturer’s warranty officer in the presence of the General Contractor, Roofing Subcontractor, DGS Construction Manager/Inspector, and DNR Project Manager.

2.03 MECHANICALLY ATTACHED BASE / PLY SHEETS

A. A durable, film surfaced asphalt modified bitumen membrane containing a core glass mat coated with flexible, SBS polymer-modified asphalt, and a self-adhering underside.

Underside is protected with a silicone coated release film.

1. Basis-of-Design Product: GAF Liberty™ SBS Self Adhering Base Sheet.

2.04 INTERPLY SHEETS

A. A durable, film surfaced asphalt modified bitumen membrane containing a core glass mat coated with flexible, SBS polymer-modified asphalt, and a self-adhering underside

OF BUILDING EXTERIORS AT FORT NO. 3 07 55 00- 6

protected with a silicone coated release film.

1. Basis-of-Design Product: GAF Liberty® SBS Self Adhering Base Sheet.

2.05 CAP SHEETS

A. Premium, granule surfaced asphalt modified bitumen membrane containing a core of non-woven polyester mat coated with flexible, SBS polymer-modified asphalt, and a self-adhering underside protected with a silicone coated release film.

1. Basis-of-Design Product: GAF Liberty® SBS Self-Adhering Cap Sheet.

B. Color: manufacturer’s standard Black.

2.06 BITUMEN / ADHESIVES

A. SBS Cement: ASTM D 4586.

1. Basis-of-Design Product: GAF Liberty Matrix® 201 Premium SBS Flashing

Cement.

B. Asphalt Primer: ASTM D 41.

1. Basis-of-Design Product: GAF Matrix® 307 Premium Asphalt Primer.

2.07 ACCESSORIES

A. Mechanical Fasteners, where specified under 3.04.B below.

1. Threaded Cap Nail: Annular-threaded electro-galvanized with yellow di-chromate coating, with 1” (25 mm) round or square cap having a minimum withdrawal resistance of 40 pounds each (178 N).

a) Basis-of-Design Product Manufacturer: Simplex Nail Corporation.

B. Roofing Nails, to attach metal drip edge.

1. #11 by 1-1/2-inch, electro-galvanized steel conforming to ASTM F1667.

2.08 FLASHINGS

A. Masonry Chimney Flashing shall be formed from 2.5 lb./sq. ft. (1/24 inch = 0.040” inch thick) lead roll stock. Flashings are to consist of an apron flashing with fully soldered corners; front cap flashing with fully soldered corners; one-piece side flashings with fully soldered transitions; saddle-at-ridge flashing with fully soldered transitions; cricket flashing with fully soldered transitions; back cap flashing with fully soldered corners; and step counter flashings with a top lip for embedment in the mortar joints.

OF BUILDING EXTERIORS AT FORT NO. 3 07 55 00- 7

1. Sealant for sealing masonry joint with counter flashing tucked into it: Burnt sand mastic consisting of 4 parts burnt sand (sand that has been heated to remove moisture) and 1 part double-boiled linseed oil (DBLO).

a) Basis-of-Design Sand Mastic: Ecologic™ Sand Mastic™ Platinum from LimeWorks.us, which is located at 3145 State Road, Telford, PA 18969;

Ph: 215-536-6706; Email: info@limeworks.us.

b) Basis-of-Design Linseed Oil: Heron Double Boiled Linseed Oil available from Heron Paint LLC, which is located at 160 Foss Creek Circle, #2283, Healdsburg CA 95448; Ph: 707-397-0203; Email: sales@heronpaint.com.

c) Joint Backer: Lead wool consisting of chemical grade lead drawn in long, fine strands and twisted into rope for tucking into crevices.

2. Sealant for sealing…