1503040 C Gutters Maintenance v2.1.docx

1503040 C – Other (Gutters)

Table of Contents

1503040 – Other (Gutters)

rainwater.

1503040 – Other (Gutters)

proper gutter and down spout drainage operation during the year. The contractor shall submit a schedule of maintenance for the year.

J-1503040-03 describes the inventory of buildings that are covered in this specification. The gutters and downspouts are of various sizes the contractor is responsible to size the gutter and downspout and replace the proper size. The guide specification attached (J-1503040-02)with this contract forms apart of the specification and shall be adhered to.

Conditions of gutters and downspouts operations meet requirements. Maintained to the contractors submitted schedule. The gutters are cleaned properly working and correctly pitched. Water goes down the downspout and away from the building. The contractor provides a written record of gutters replaced during the year.

operation. Gutters are properly pitched and correctly attached and draining away from the building. Maintain gutters so they do not leak to include seams and corners.

Rain gutters in this specification have many styles; this contract covers all styles, shapes and material.

Inspect gutters per contractors schedule. Gutters are free flowing and do not leak to include seams and corners.

Repair all damaged gutters so no leaks and do not drain properly and puddle water at the base of the downspout.

are properly and correctly draining away from the building.

Rain gutters in this specification have many styles; this contract covers all styles, shapes and material.

Clean gutters twice a year in the late fall, before freezing temperatures, and after the spring thaw. Contractor shall submit schedule for approval. Gutters are free flowing. Repair all damaged gutters that do not drain properly and puddle water at the base of the downspouts

downspout is repaired.

Any damaged downspout is repaired in a timely manner. Water does not pool at the base of the downspout.

.The Contractor shall clean downspouts removing debris and disposing of off station. Downspouts are proper and correctly draining away from the building.

Downspouts in this specification have many styles; this contract covers all styles, shapes and material.

Clean downspouts twice a year in the late fall, before freezing temperatures, and after the spring thaw. Contractor shall submit schedule for approval.

Downspouts are free flowing. Repair all damaged downspouts that do not drain properly and puddle water at the base of the downspout.

Maintain splash blocks level and in good condition.

Splash blocks are level, aligned in the correct way and free of debris. Block carries water away from building.

The Contractor shall perform service call work in a timely manner and ensure facilities, equipment and systems are restored to a safe, normal working condition and function properly.

The Contractor shall receive service calls in accordance with the work reception requirements in Annex 2.

The Contractor shall schedule and perform service calls in a way that minimize disruptions to customers and Government operations. The Contractor shall perform service calls to accomplish any work identified within the entire boundary of the installation and will include a wide variety of work. The Contractor shall maintain sufficient materials and equipment on hand to support trouble call work requirements. Lack of availability of material or equipment will not relieve the Contractor from the requirement to complete trouble call work within the time limits specified. The Government may combine multiple repair requirements received for the same trade in the same area at the same time into one trouble call as long as the trouble call threshold is not exceeded.

Service call work is responded to and completed within the specified time. Equipment and installed equipment and systems are restored to normal working condition, including recertification if applicable. When repair is complete equipment or installed equipment and system does not present danger to personnel or equipment.

The Contractor shall repair replace gutters, downs spouts to ground level all elbows, hangers and other items that are part of the gutter systems. The contractor shall provide a written report when the contractor replaces any gutter or downspouts listing the building number, the length installed. The contractor shall provide a schedule of when gutters will be cleaned based on the optimum time stated in this specification..

The contractor shall start gutter cleaning in the late fall, before the arrival of freezing temperatures, and after the spring thaw. Contractor shall submit schedule for approval.

Inspection can be completed on the contractor’s schedule.

Task orders may be issued for items above the scope of the contract by the Government. The contractor shall submit his cost with labor and materials to the KO within 5 days.

Gutters are not damaged or clogged with debris and are free flowing. Reports are submitted on a timely manner.

1503040 – Other (Training Pools)

UFC 3-110-03: Roofing UFC 1-200-01: DoD Building Code UFC 3-301-01: Structural Engineering UFGS 07 71 00: Roof Specialties and Accessories UFGS 07 60 00: Flashing and Sheet Metal UFGS 01 33 00: Submittal Procedures SMACNA: Architectural Sheet Metal Manual (7th Edition), Chapter 1 (Gutters and Downspouts).

ASCE/SEI 7: Minimum Design Loads and Associated Criteria for Buildings and Other Structures (wind and snow load provisions).

ASTM A240/A240M: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip.

ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate.

ASTM B370: Standard Specification for Copper Sheet and Strip for Building Construction.

The gutter guard must meet the minimum requirements of the following:

1. must consist of rigid metallic frames supporting heavy-duty mesh screens designed to prevent pine needles, oak tassels, deciduous leaf debris, and pests from entering gutters while permitting maximum hydraulic transfer.

1. Components must exhibit high corrosion resistance. All raw cut edges, fasteners, and mesh frames must pass a minimum 1,000-hour salt spray test per ASTM B117 without blistering, flaking, pitting, or red rust.

1. Assemblies must be engineered and mechanically secured to resist wind forces determined in accordance with ASCE 7, Min 115mph (This will depend on the location of the Base. Waterfront is much windier). Friction-only or press-fit friction tabs without mechanical fastener backups are strictly prohibited in exterior wind-exposed areas.

1. Minimum water throughput capacity: 150 inches of rainfall per hour.

1. Assemblies must accommodate linear thermal expansion and contraction over an ambient range of -10°F to 110° shearing fasteners.

1. Plastic, PVC, vinyl, nylon, and open-cell polyether/polyurethane foam inserts are prohibited.

Approved materials are:

1. Stainless Steel Micro-Mesh with Extruded Aluminum Subframe

• Frame: Extruded architectural aluminum alloy 6063-T5 or 6005-T5, minimum thickness 0.050 inch (1.27 mm).

• Finish: Factory-applied architectural grade anodized (AAMA 611 Class I) or thermo-set fluoropolymer resin finish (AAMA 2605, PVDF 70% Kynar 500) matching existing gutter/fascia color.

• Mesh Screen: Marine-grade Type 316 stainless steel (or Type 304 for non-saline interior zones) woven wire cloth, plain weave.

• Wire diameter: Minimum 0.011 inch to 0.018 inch.

• Mesh count: Minimum 28 to 30 mesh per linear inch to block fine needles while shedding silt.

• Mechanical Hemming: Mesh must be permanently mechanically locked or crimped into the extruded aluminum frame without adhesives.

1. Heavy-Duty Perforated Sheet Metal Guards (Matched Metal System)

• Substrate Material: Must match the parent gutter material:

• For Aluminum Gutters: Minimum 0.032-inch-thick sheet aluminum (ASTM B209).

• For Copper Gutters: Minimum 16 oz or 20 oz cold-rolled copper (ASTM B370).

• For Stainless Steel Gutters: Minimum 24-gauge Type 304/316 stainless steel (ASTM A240).

• Perforations: Precision-stamped holes (approx. 1/8-inch diameter staggered patterns) providing a minimum of 40% open area.

• Stiffening Ribs: Longitudinal v-bends or rolled structural stiffeners running the full length of each section to prevent sagging under wet leaf or snow loads.

1. Wire Downspout strainers- Mandatory at all outlets:

A) Regardless of whether continuous surface guards are installed, every downspout outlet drops/collector head must be fitted with an engineered wire strainer.

B) Removable balloon-type or beehive-type wire basket designed with compressible tapered prongs that slide securely into downspout drops.

1. Fasteners must be self-drilling, self-tapping screws with neoprene or EPDM sealing washers.

1. Contractor shall inspect existing gutters and fascia boards prior to installation. Verify that gutters are sloped continuously toward downspouts at a minimum rate of 1/16 inch per foot (1:192) without low pockets or ponding water.

1. Contractor shall completely flush and scrape all accumulated silt, biological growth, pine needles, and metal shavings from existing troughs and downspouts prior to fitting guards.

1. Any tree canopies or overhanging limbs within 10 feet of the roof perimeter have been trimmed back in accordance with NAVFAC Grounds Maintenance instructions.

1. Submittals:

A) Fastening schedules, attachment clip spacings, and expansion joint locations.

B) Wind-uplift engineering details verifying resistance to site-specific basic wind speed per ASCE 7. (This can be manufacturer’s specification) C) One 12-inch full-scale physical sample of each gutter screen/guard type proposed, complete with mounting clips, joining splices, and specified fasteners.

D) Materials specification E) Quality Control Plan and Quality control report

1. Oversite, supervision and Quality control: This project requires a Project Superintendent, a Quality Control (QCM) Manager and a Site Safety & Health Officer (SSHO). The same individual may be the Project Superintendent/Quality Control (QCM) Manager/ and Site Safety & Health Officer. However, that individual shall meet the qualification requirements of each position.

1. Contractor’s qualifications: The contractor must be qualified under NAICS 238160 (Roofing Contractors) or NAICS 238170 (Siding & Sheet Metal Contractors), or operate as an approved specialty subcontractor under a general construction prime (NAICS 236220)

1. Warranty: The contractor shall provide a one-year warranty for both materials and labor for all work in this Scope of Work.

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