QA_1305M226Q0245_0001.pdf

Q&A 1305M226Q0245

Question 1: We had multiple questions/discussions about dimensions.

The SOW states: “The shelter shall be attached to the existing building; extend a minimum of 28 feet outward from the building face; begin and end approximately at the outside edges of the existing left and right windows; provide unobstructed access beneath the structure;

eliminate intermediate support columns within the covered work area; provide a reinforced concrete work pad with tapered side ramps.”

*NOTE that the SOW states “The attached rendering is conceptual only. The Contractor shall verify all dimensions, elevations, utilities, and field conditions prior to final design and construction.”

Height and slope of roof The height and slope of the roof are not specified in the SOW text. The Government requires a minimum clear vertical clearance of 16 feet at the building and 15 feet at the north/northern end of the shelter. The Contractor shall determine the final roof configuration, roof slope, structural framing, and attachment elevations based on field conditions, applicable codes, drainage requirements, and the requirements of the SOW.

The Contractor shall maintain the required minimum clearances throughout the usable covered area. The attached rendering is conceptual only. The Contractor is responsible for field verification and final engineering.

Question 2: How many outlets do you need?

The Government requires one (1) four-gang electrical receptacle assembly. The SOW specifies, “a weather-resistant four-gang electrical receptacle between the personnel door and double window.”

Question 3: Do you need electrical outlets on any of the poles?

No additional electrical receptacles are required on structural support columns. The only required receptacle is the one (1) four-gang weather-resistant receptacle assembly located between the personnel door and double window on the right side of the building. The SOW specifies, “a weather-resistant four-gang electrical receptacle between the personnel door and double window.”

Question 4: Can we add a third column for support?

The Government will allow additional structural support columns where necessary to achieve the required structural design, provided the columns do not interfere with vehicle access, loading/unloading operations, or the required clear opening through the shelter.

A structural support column may be located adjacent to the building between the garage door and personnel door. A structural support column may also be located at the north end of the shelter near the water-facing end, between the two corner columns.

No structural support columns shall be located within the primary vehicle travel/loading area or in locations that obstruct access through the east or west sides of the shelter.

Final column locations shall be determined by the Contractor's structural engineer and shall comply with all applicable wind, structural, and clearance requirements.

Question 5: If we can’t get aluminum, is galvanized steel an option?

Aluminum is preferred due to the coastal/marine environment. If aluminum is not available or is not practical for the required structural design, hot-dip galvanized steel with stainless steel fasteners and appropriate corrosion protection is acceptable. The contractor must provide the reasoning as to why aluminum is not available or not practical.

Electroplated or mechanically plated galvanized components are not acceptable for primary structural members or exposed structural connections.

The Contractor shall provide materials and coatings suitable for the marine environment and shall comply with applicable corrosion-resistance requirements.

Question 6: Is any permitting required?

The Government is not aware of any additional permitting requirements at this time. However, the Contractor shall be responsible for verifying all applicable permitting requirements with the appropriate authorities prior to construction and shall obtain any permits, approvals, or inspections required by applicable federal, state, or local authorities.

Question 7: How many lights are needed; what type of lighting?

Provide LED lighting throughout the covered work area sufficient to provide a minimum average illumination level of 10 foot-candles at the work surface/floor area under normal operating conditions.

The Contractor shall determine the number, type, wattage, spacing, mounting locations, and photometric layout of fixtures necessary to achieve the required illumination level while complying with applicable electrical, energy, safety, and building code requirements.

Fixtures shall be suitable for the covered exterior/coastal environment and appropriately rated for the installation location.

● OSHA 1910.303 / 1926.56: Mandates adequate lighting for safety and task performance. General minimum foot-candle (fc) levels include:

○ General indoor/covered workrooms and shops: 10 foot-candles.

QUESTIONS RELATED TO DRAINAGE

NOTE: Existing Buried Trough: The Government has identified an abandoned buried concrete trough between the existing building and the water-facing side of the proposed shelter area. The trough is approximately 18 inches wide and may extend to approximately 4 feet below grade. The trough is no longer in service and has previously been partially filled with concrete, rock, and/or soil.

The Contractor shall field verify the location and condition of the trough. Removal, partial demolition, filling, or other treatment necessary to construct the required foundation and concrete pad shall be included in the Contractor's construction approach. The Contractor shall provide an appropriate structural solution for the shelter foundation and concrete pad based on verified site conditions.

Question 8: Can we have gutters on each corner of the north side of the shelter with concrete splash pads?

Yes. Gutters and downspouts may be provided at the north side of the shelter, provided the system does not create concentrated stormwater discharge that causes erosion, ponding, unsafe conditions, or impacts to the adjacent property or shoreline.

The Contractor shall provide appropriate splash pads, drainage features, or other measures necessary to disperse roof runoff and prevent erosion and ponding. Final drainage configuration shall be designed by the Contractor based on field conditions and applicable requirements.

Question 9: Can the concrete pad be raised above the existing sidewalk?

The finished concrete pad elevation shall generally match the elevation of the existing adjacent sidewalk at the interface between the sidewalk and pad. The pad shall be graded to provide positive drainage toward the north/water side while maintaining safe and accessible transitions.

The Contractor shall provide tapered transitions/ramps on the east and west sides of the pad to allow vehicles and equipment to enter and exit the covered work area.

The Contractor shall account for existing site grades, including the existing condition where the surrounding soil slopes toward the building, and shall provide sufficient grading/drainage to prevent ponding against the building or on the concrete pad.

Final elevations and slopes shall be established by the Contractor based on field verification and applicable code requirements.

Question 10: Are there any buried utilities?

The Government is aware of abandoned 4-inch water lines in the vicinity of the proposed work area. These lines are not currently in service. If encountered during construction, the Contractor may cut, cap, remove, or otherwise abandon the lines in accordance with applicable requirements and the Contractor's approved construction methods.

The Contractor shall verify existing utility locations and conditions prior to excavation. The Contractor remains responsible for exercising appropriate care to avoid damage to active utilities or other existing infrastructure.

Question 11: How wide this lean-to structure should be? I have the height and the length but not sure how wide you guys are looking for it to be?

The covered work area shall extend a minimum of 28 feet outward from the existing building face. The shelter shall generally extend laterally from approximately the outside edge of the existing left window to approximately the outside edge of the existing right window, as depicted in the conceptual rendering.

The rendering is conceptual only. The Contractor shall conduct all required field measurements and verify existing conditions prior to final design and construction. The Contractor shall determine the final structural dimensions and configuration necessary to meet the requirements of the SOW, including required clearances, structural loading, drainage, and applicable codes and standards.

The minimum required shelter depth is 28 feet. A greater depth may be proposed if necessary to meet structural, drainage, or operational requirements, provided the proposed configuration does not adversely affect the existing facility or site operations.

Question 12: What is the area or size for the concrete pour. I can see in the rendering what you guys are looking for but not sure if you had a specific size in mind?

The concrete work pad shall generally encompass the entire covered work area and provide a continuous, durable surface suitable for vehicle access, loading/unloading, equipment staging, and maintenance activities.

The concrete pad shall extend approximately the full width of the shelter and a minimum of 28 feet outward from the building face, subject to field conditions and the Contractor's final design.

The east and west sides of the pad shall include tapered transitions/ramps to permit vehicles and equipment to enter and exit the covered work area. The finished pad elevation shall generally match the adjacent existing sidewalk at the building-side interface and shall be graded to provide positive drainage toward the north while preventing ponding against the building or on the work surface.

The Contractor shall field verify existing dimensions, grades, utilities, and site conditions and shall determine the final concrete pad dimensions, thickness, reinforcement, joints, subbase preparation, and elevations necessary to meet the intended use and all applicable codes and standards.

The concrete pad shall be designed to support the anticipated vehicle and equipment loading associated with NOAA operations.

The rendering is conceptual and shall not be used as the sole basis for determining final dimensions or quantities.