ATTACHMENT 6 - SPECIFICATIONS.pdf

RFQ NO. 19SP5025Q0003

STATEMENT OF WORK

U.S. DEPARTMENT OF STATE

OBO FACILITIES MANAGEMENT DIVISION

Attachment 6. SPECIFICATIONS

U.S. Embassy Madrid Spain

November, 2024

RFQ No. 19SP5025Q0003

1 INTRODUCTION / SUMMARY OF WORK PROJECT

The US Embassy in Madrid requires the construction of a wheelchair ramp to enhance accessibility for individuals with disabilities. This scope of work also includes, as an optional line item, the increase of motorcycle spots on the existing stairs area.

The ramp will be located at the north entrance of the cafeteria, where the granite stairs are currently standing.

Location of works: Calle de Serrano, 75, 28006 Madrid, Spain

2 SCOPE OF WORK

2.1 PRIOR TO IMPLEMENTATION

2.1.1 Required site visit and survey. The contractor shall be responsible for researching the existing conditions and matters that affect the cost or performance of the services. Contractor is required to attend the site visit to confirm all measurement and survey existing layout prior to submission of BOM and quotation. Measurements provided are approximate and US Embassy shall not be held responsible for inaccurate dimensions. Please refer to FAR Clause 52.236-27 – SITE VISIT (CONSTRUCTION) (FEB 1995) in paragraph C of Section J of the RFQ.

2.1.2 RESERVED.

2.1.3 DOCUMENT SUBMITTAL PACKAGE. The Contractor shall submit, as part of its offer, the following:

2.1.3.1 Product Data: Manufacturer's data sheets on each product to be used.

NOTE: The Contractor shall submit, within TEN (10) calendar days from the award date, the following :

2.1.3.1.1 Samples of the materials proposed for use under this RFQ. All materials to be furnished by the Contractor must be first approved by the Embassy.

2.1.3.1.2 Manufacturer’s installation instructions, including preparation, storage, and handling requirements.

2.1.3.2 Complete finalized Work Plan including Critical Path Method (CPM) schedule. Please see Section J – Instructions on how to submit a quotation of the RFQ.

2.1.4 DOCUMENT SUBMITTAL PACKAGE. Submit to the CO and/or COR within 15 days of Notice to Proceed, document submittal package that includes:

2.1.4.1 Activity Hazard Analysis (AHA) with detail specification of the safety plan to be implement.

2.1.4.2 List of personnel to be approved by the Embassy for the access request. See Section G.5.2 of the RFQ.

2.2 IMPLEMENTATION

2.2.1 AREA ISOLATION AND ACCESS RESTRICTION (Please see FAR Clause 52.236-13 ACCIDENT PREVENTION (NOV 1991) and DOSAR Clause 652.236-70 ADDITIONAL SAFETY MEASURES in Section H of the RFQ.)

2.2.1.1 The contractor shall provide a plan for the isolation and restriction of the access to the area to be intervened.

2.2.1.2 Works must be carried out exclusively by staff with technical knowledge to do so, and always complying with the security rules.

2.2.1.3 The Contractor shall develop and submitt for review and acceptance the Plan for isolation as part of their Accident Prevention Plan at least 10 working days prior to commencing any activity at the site.

2.2.1.4 Protection and isolation of the area. Please include water protection like provisional roof in case of rain.

2.3 DESCRIPTION OF THE WORKS

LINE ITEM 1: RAMP

Reroute and relocate the drainage located on the base of the stairs and other utilities on the area before starting the works.

Clearing: Clear the area where the slab will be placed. Remove grass, stones, roots, or other elements that might interfere with the concrete.

Excavation and demo: Dig the ground to a depth of about 20 cm (the thickness of the slab). If the soil is too soft, you might need to excavate deeper and add compacted gravel to improve stability.

Compaction: Use a tamper or manual rammer to compact the soil well. This will prevent the slab from settling or cracking over time.

Placed a waterproofing membrane that is durable, abrasion resistant and suitable to withstand weather conditions and traffic to prevent the subbase from extracting water from the wet concrete.

Field set out/ lay out and verification of measurements, slope and alignment of ramp.

Ramp to meet ADA requirements of 1:12 slope

Place wooden planks or metal formwork around the edges of the excavated area to shape the slab. Ensure the formwork is level and aligned properly.

Use a level to make sure the planks are perfectly horizontal and at the desired height (approximately 20 cm thick).

Place steel mesh or rebar inside the excavation before pouring the concrete. The mesh should be about 3-5 cm above the base to avoid displacement.

Rebar can be arranged in a square mesh pattern or as longitudinal bars, according with sketches specifications.

Use pre-mixed concrete HA25 in bags or mix it manually in a wheelbarrow.

Pour the concrete into the prepared base, starting from one end of the area and working your way to the other.

Make sure the concrete is distributed evenly and avoid air bubbles.

Use a trowel or screed board to smooth the surface of the concrete and shape the slab

Once the concrete is poured, use a wooden board or a metal screed to level the surface.

Slide the screed along the formwork edges to smooth the layer.

Use a float or a trowel to smooth and finish the surface, ensuring there are no imperfections.

After pouring and leveling the concrete, cover the slab with plastic or wet burlap to prevent it from drying too quickly.

Curing is an important process to ensure the concrete reaches its maximum strength.

Keep the slab wet for at least 7 days by spraying it with water several times a day or keeping it covered with plastic.

After at least 24 hours, you can remove the wooden formwork. Don't rush this process, as the concrete should be firm enough to avoid deformation.

If necessary, make touch-ups along the edges or surface to achieve a perfect finish.

Joints every two meters.

Handrail installation.

1. Planning and Measuring

Location: Determine the exact location for the handrailEnsure the handrail is accessible and easy for people with mobility impairments to use.

Measurements: Use a measuring tape to measure the length of the handrail and ensure it covers the area where support is needed. Mark the exact locations for the supports on the floor.

2. Type of Handrail and Support

Handrails should be non-slip, with a design that allows for easy grip. The material should be durable and resistant, stainless steel,

3. Installing the Brackets

Marking holes: Use a pencil or chalk to mark the spots where the screws or anchors for the brackets will go. Ensure the marks are aligned and level, using a level.

Drilling: With an electric drill and the appropriate drill bit, drill holes into the wall or floor where the anchor screws will be placed. Ensure the holes are deep enough for the anchors.

Placing anchors: For concrete, insert the anchors or wall plugs into the drilled holes.

Ensure they are secure.

Installing the brackets: Place the mounting brackets on the marked spots and secure them with the appropriate screws. Tighten the screws to make sure the brackets are firmly attached.

There are two types of pillar:

Removal

Permanent foundation

4. Attaching the Handrail

Once the brackets are securely installed, place the handrail onto them. Most handrails come with mounting brackets that attach to the base of the handrail.

Adjust the handrail to the correct height) and make sure it’s aligned properly.

Secure the handrail to the brackets with the provided screws, ensuring it is stable and secure.

5. Safety Check

After installing the handrail, check that all screws are tightly fastened, and the handrail is firm and secure.

Safety test: Ensure the handrail has no movement or noise that might indicate loose screws.

Height check: Verify that the handrail is at the correct height and easily accessible for people with mobility impairments.

6. Final Touches

If the handrail has rough edges or splinters, use a fine sandpaper to smooth them out and prevent injury.

Clean the handrail and installation area to remove dust or debris.

Follow the below regulations.

Continuity. Handrails shall be continuous within the full length of each stair flight or ramp run.

Inside handrails on switchback or dogleg stairs and ramps shall be continuous between flights or runs.

Height. Top of gripping surfaces of handrails shall be 34 inches (865 mm) minimum and 38 inches (965 mm) maximum vertically above walking surfaces. Handrails shall be at a consistent height above walking surfaces, stair nosings, and ramp surfaces.

Top and Bottom Extension at Ramps. Ramp handrails shall extend horizontally above the landing for 12 inches (305 mm) minimum beyond the top and bottom of ramp runs. Extensions shall return to a wall, guard, or the landing surface, or shall be continuous to the handrail of an adjacent ramp run.

Changing the grill of drainage to be adapted to ADA regulations.

Clean and hand over:

1. Maintain safe clean environment for contractor and occupants of the site.

2. Remove all debris and waste from site daily. Small rubbish may be disposed of in the US Embassy waste disposal bins. Large and heavy debris must be removed and disposed by contractor.

OPTIONAL LINE ITEM 2: MOTORCYCLE UPDATE PLATFORM

1. Site Preparation

Clear the area: Remove any vegetation, debris, or obstacles in the area.

2. Set Up Formwork

Install formwork (metal frames) to shape the concrete. Ensure it is well-braced to withstand the pressure of the wet concrete.

Check for alignment and level: Use a level and a string line to ensure the formwork is straight and even.

3. Filling

Filling with cyclopean concrete section must until 20cms.

Concrete Layers:

In a cross-section, the concrete layer surrounding the large stones is visible. This concrete layer can vary in thickness, but it is generally thinner than the size of the stones themselves.

Distribution of Stones:

The large stones are visible in the section and are typically arranged irregularly throughout the concrete mass. These stones are not evenly distributed, which gives the wall a rough, more "natural" texture.

Space Between Stones

Between the large stones, there may be empty spaces filled with the concrete mix, ensuring the concrete distributes loads more evenly and may also facilitate water penetration in some cases.

Copy code

+---------------------------------------+ <- Outer concrete layer

| O o O O o O O | <- Large stones (O) distributed irregularly

| o O O o O o O | <- More large stones

In this representation, the letters "O" represent the large stones, which are irregularly sized.

The solid line represents the concrete layer surrounding the stones.

3. Reinforcement

In the last 20 cms place reinforcement bars (rebar) ;Lay horizontal and vertical rebar inside the formwork to provide strength per drawing attached.

Tie the rebar together using wire or connectors to prevent movement during pouring.

4. Pouring the Concrete

Pour the concrete into the formwork: Start at one end of the form and pour continuously.

Avoid dropping the concrete from a height to minimize segregation.

Use a shovel or rake to spread the concrete evenly within the formwork.

Vibrate the concrete (using a concrete vibrator or tamping rod) to remove air bubbles and ensure a dense, solid structure.

5. Leveling and Finishing

Level the surface with a straight edge or screed board to ensure an even top surface.

Smooth the surface with a trowel for a polished finish, or leave it rough-textured for a more natural look, depending on the desired appearance.

6. Curing the Concrete

Allow the concrete to cure: After pouring, the concrete needs to be kept moist for several days (usually 7–14 days) to ensure proper hydration and strength development. This can be done by covering the wall with wet burlap, plastic sheeting, or using curing compounds.

7. Removing Formwork

Wait until the concrete has set and hardened (typically 24-48 hours) before removing the formwork. The time may vary depending on temperature and humidity.

Carefully remove the formwork once the wall has gained enough strength to stand on its own.

8. Final Inspection and Cleanup

Inspect the wall for any imperfections, cracks, or voids. If necessary, patch them with additional concrete.

Clean the site: Remove debris, tools, and excess material.

9. Guardrail

Site Preparation:

If the ramp is on uneven terrain, ensure the anchor points for the posts are stable. This may involve leveling the ground or digging holes to place the support posts.

Precisely mark the location of each post to ensure the fence is correctly aligned and at the right angle along the slope.

Post Installation:

Place the posts at the marked locations, ensuring they are aligned along the slope of the ramp.

If the slope is steep, you may need to cut the posts to different lengths to ensure they are level as they adjust to the incline of the ramp.

Secure the posts with concrete or metal anchors to ensure they are firmly installed per attached section

Placing the Fence Panels or Sections:

Once the posts are installed and secured, begin placing the fence panels or mesh.

Ensure that each section is aligned and securely fixed to the posts. Use screws or bolts to fasten the panels to the posts.

Final Inspection and Adjustments:

Check that all panels are level and properly aligned, especially if the ramp has a steep incline.

Make any necessary adjustments to ensure the fence is straight and stable.

If the fence has a gate or entrance, make sure it opens and closes properly without obstruction.

Safety Check:

Verify that all anchors and fasteners are sturdy and properly installed to avoid any accidents.

Conduct a strength test to ensure the fence can bear pressure without shifting or becoming loose.

Characteristics:

Must ensure guardrail systems meet the following requirements:

The top edge height of top rails, or equivalent guardrail system members, are 42 inches (107 cm), plus or minus 3 inches (8 cm), above the walking-working surface. The top edge height may exceed 45 inches (114 cm), provided the guardrail system meets all other criteria of paragraph (b) of this section (see Figure D-11 of this section).

Midrails, screens, mesh, intermediate vertical members, solid panels, or equivalent intermediate members are installed between the walking-working surface and the top edge of the guardrail system as follows when there is not a wall or parapet that is at least 21 inches (53

cm) high

Midrails are installed at a height midway between the top edge of the guardrail system and the walking-working surface.

Screens and mesh extend from the walking-working surface to the top rail and along the entire opening between top rails supports;

Intermediate vertical members (such as balusters) are installed no more than 19 inches (48 cm) apart; and other equivalent intermediate members (such as additional midrails and architectural panels) are installed so that the openings are not more than 19 inches (48 cm) wide.

Guardrail systems are capable of withstanding, without failure, a force of at least 200 pounds (890 N) applied in a downward or outward direction within 2 inches (5 cm) of the top edge, at any point along the top rail.

When the 200-pound (890-N) test load is applied in a downward direction, the top rail of the guardrail system must not deflect to a height of less than 39 inches (99 cm) above the walking-working surface.

Midrails, screens, mesh, intermediate vertical members, solid panels, and other equivalent intermediate members are capable of withstanding, without failure, a force of at least 150 pounds (667 N) applied in any downward or outward direction at any point along the intermediate member.

Guardrail systems are smooth-surfaced to protect employees from injury, such as punctures or lacerations, and to prevent catching or snagging of clothing.

The ends of top rails and midrails do not overhang the terminal posts, except where the overhang does not pose a projection hazard for employees.

Steel banding and plastic banding are not used for top rails or midrails.

Top rails and midrails are at least 0.25-inches (0.6 cm) in diameter or in thickness.

When guardrail systems are used at hoist areas, a removable guardrail section, consisting of a top rail and midrail, are placed across the access opening between guardrail sections when employees are not performing hoisting operations. The employer may use chains or gates instead of a removable guardrail section at hoist areas if the employer demonstrates the chains or gates provide a level of safety equivalent to guardrails.

When guardrail systems are used around holes, they are installed on all unprotected sides or edges of the hole.

For guardrail systems used around holes through which materials may be passed:

When materials are being passed through the hole, not more than two sides of the guardrail system are removed;

When materials are not being passed through the hole, the hole must be guarded by a guardrail system along all unprotected sides or edges or closed over with a cover.

When guardrail systems are used around holes that serve as points of access (such as ladderways), the guardrail system opening:

Has a self-closing gate that slides or swings away from the hole, and is equipped with a top rail and midrail or equivalent intermediate member that meets the requirements in paragraph (b) of this section; or

Is offset to prevent an employee from walking or falling into the hole;

Guardrail systems on ramps and runways are installed along each unprotected side or edge.

Manila or synthetic rope used for top rails or midrails are inspected as necessary to ensure that the rope continues to meet the strength requirements in paragraphs (b)(3) and (5) of this section.

2.4 AFTER IMPLEMENTATION

2.2.2 Detail engineering and "as-built" documents: After final completion of the work, but before final acceptance thereof, the Contractor shall provide: a complete set of "as-built" drawings, based upon the record set of drawings, marked to show the details of construction as actually accomplished.

2.2.3 When all site work is complete, the Contractor's site superintendent shall review all activities and walk the project area with the COR to ensure that the embassy staff is satisfied, and all work items are acceptable. If any items are not completed, they shall be noted and provided to the Contractor to be addressed and completed immediately.

2.2.4 The Contractor shall ensure that, upon demobilization, the site is left in a clean and orderly appearance, equal to or better than prior to start of work.

3 Codes and Standards

3.1 Any design specifications shall conform to the more stringent requirements of the following attached codes and standards.

3.1.1 Occupational Safety & Health Administration Codes (OSHA)

3.1.2 International Building Code (ICBO)

3.1.3 International Mechanical Code (ICBO).

3.1.4 Mechanical Systems - ASHRAE and SMACNA Standards.

3.1.5 National Fire Protection Association (NFPA 101) Life Safety Code.

3.1.6 https://www.access-board.gov/ada/guides/chapter-4-ramps-and-curb-ramps/

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