Statement of Work.pdf

STATEMENT OF WORK

Precast Concrete Moment Frame Assemblies for Structural Testing at the NFRL

1. Background

The Structures Group in the Engineering Laboratory at the National Institute of Standards and Technology (NIST) researches and develops performance-based tools to enhance building resilience against extreme hazards like wind, fire, and earthquakes, providing technical data, structural standards, and failure analysis to mitigate disasters. The Structures Group is expanding upon a recently completed multi-year experimental research effort that focused on mitigating disproportionate collapse of buildings in the United States. First, prototype 10-story buildings were designed for seismic and gravity loads, with each building employing one of the following lateral load resisting systems at its perimeter: steel moment frame, reinforced concrete moment frame, or precast concrete moment frame. Next, moment frame assemblies representing a portion of these frames were tested at full scale under a middle column removal scenario to evaluate the disproportionate collapse resistance of each system.

The precast concrete moment frame assemblies that were tested revealed potential vulnerabilities, which led to them being only marginally able to resist disproportionate collapse under a sudden column removal scenario. The moment connections in these assemblies were made by steel link plates that protruded from the beam ends and were fillet welded to plates embedded in the columns. Motivated by the suboptimal performance of these assemblies, NIST, in collaboration with an industry review committee of Precast/Prestressed Concrete Institute (PCI) members, developed five novel precast concrete beam-to-column moment connection concepts. Moment frame assemblies featuring these connection concepts were designed for moments arising from a middle column removal scenario in the exterior moment frame of a prototype precast concrete moment frame building. These assemblies were derived at five-eighths scale from the prototype building and were tested under a middle column removal scenario to characterize their robustness against disproportionate collapse.

While all five of the tested connection concepts were shown to be viable for use in precast concrete construction to achieve robust performance against disproportionate collapse, their performance under seismic loads is unknown. NIST has selected two of the five connection concepts for further experimental study. The connections are called the threaded rod connection and the bar coupler connection. Moment frame assemblies featuring these two connection concepts will be subjected to fully-reversed cyclic loads, which are representative of what is expected to be felt by structural members during earthquake ground motion. These experimental tests will help to provide the technical basis for the development and improvement of codes, standards, and practices governing the design of precast concrete structures.

2. Purpose and Objective

The purpose of this requirement is to obtain contractor services to fabricate and deliver a quantity of three (3) precast concrete moment frame assemblies to the National Fire Research Laboratory (NFRL) located in Building 205 at NIST in Gaithersburg, MD, with an option to procure up to two (2) additional precast concrete moment frame assemblies, for a total of five

(5) assemblies.

Each assembly shall consist of two precast concrete beams and one precast concrete column.

The NIST Contracting Officer’s Representative (COR) will provide preliminary design drawings for the assemblies, which include details for the steel reinforcement and cast-in hardware.

Section 3.2 details the “Preliminary Design Drawings” as an attachment named “Full-Scale Flexure Specimens Preliminary Design Drawings.”

The contractor shall deliver the individual components comprising the assemblies (i.e., the beams and columns) to NIST in accordance with the Deliverables table. Once at NIST, NIST staff will connect the precast concrete beams to the central precast concrete column using threaded rods for the threaded rod connection or reinforcing bar couplers for the bar coupler connection.

PLACE OF PERFORMANCE

The primary place of performance shall be at the Contractor’s place of business. All products required shall be delivered to NIST located in Gaithersburg, Maryland.

PERIOD OF PERFORMANCE

The Base Period of Performance shall be effective for 6 months from September 1, 2026 through February 28, 2027. Options to increase quantity are applicable to this requirement. Two (2) Optional Items, as described further below, if exercised at time of award or within the effective period of performance, shall each extend the performance period by an additional four (4) months. If one option is exercised, the performance period will be extended by four months from six months to 10 months. If the second option is exercised, an additional four months will be added to the performance period and extended from 10 to 14 months. The Period of Performance shall not exceed 14 months.

3. SPECIFIC REQUIREMENTS

TASKS

Task 3.1

The Contractor shall provide the equipment, materials, and labor necessary to fabricate and deliver the assemblies to the NFRL in Building 205 at the NIST campus in Gaithersburg, MD. As summarized in Table 1, this statement of work includes a base requirement of three precast concrete assemblies (i.e., six precast concrete beams and three precast concrete columns), with options for purchasing two additional assemblies (an assembly is comprised of two precast concrete beams and one precast concrete column) in increments of one. The optional additional precast concrete beams and columns may be purchased either at the time of award, or at any time within the effective period of performance (see Table 1 below). Specific requirements for each of these products are given in subsequent sections, as indicated in Table 1. In addition to the required products listed in Table 1, project deliverables also include required submittals, as listed in Table 2. The project schedule associated with these deliverables is specified in Section 6.

Table 1 – Required Products

Product Required Quantity Specific Requirements Base Requirement

Precast concrete beams 6 See Section 3.2 Precast concrete columns 3 See Section 3.2

Precast concrete lifting clutches

At least 4 See Section 3.2.3

4 in. × 8 in. concrete cylinders

24 per assembly See Section 3.3.9

Connection components See Section 3.3.7 See Section 3.3.7 Material test bar See Section 3.3.8 See Section 3.3.8

*OPTION 1

Precast concrete beams 2 additional See Section 3.2

Precast concrete columns 1 additional See Section 3.2 4 in. × 8 in. concrete cylinders 24 per assembly See Section 3.3.9

Connection components See Section 3.3.7 See Section 3.3.7 Material test bar See Section 3.3.8 See Section 3.3.8

*OPTION 2

Precast concrete beams 2 additional See Section 3.2

Precast concrete columns 1 additional See Section 3.2 4 in. × 8 in. concrete cylinders 24 per assembly See Section 3.3.9

Connection components See Section 3.3.7 See Section 3.3.7 Material test bar See Section 3.3.8 See Section 3.3.8

*OPTIONAL REQUIREMENTS: Options may be exercised at the time of award or at any time within the effective performance period of the contract. Option 1 and Option 2 are optional items, that if exercised, may be exercised in accordance with FAR 52.217-7 Option to Increase Quantity as a Separately Priced Line Item. Alternatively, Options may be exercised at time of award, per FAR 52.217-4 Evaluation of Options Exercised at Time of Award. The contractor shall provide all deliverables associated with the optional tasks, if exercised, within 120 days after the option(s) are exercised.

As described in Task 3.2, the NIST COR will provide the Contractor with preliminary design drawings, as is attached to the solicitation. The contractor shall receive the preliminary design drawings from NIST then create shop drawings integrating NIST preliminary designs. During this process, the Contractor shall provide feedback on the preliminary design drawings. The preliminary design drawings do not include quantity, type, capacity, and locations of cast-in anchors for lifting/handling the assemblies. The designs may need to be slightly modified so that they can incorporate lifting hardware. In addition to the shop drawings, the Contractor shall deliver to NIST handling procedures (Item C in Section 6.1) and material certificates (Item D in Section 6.1).

The Contractor shall deliver the shop drawings, handling procedures, and material certificates to NIST and NIST will create final drawings. The final drawings may include minor modifications to account for any contract-related changes for production and handling purposes, if needed to ensure performance requirements are met (see review process in table 5 – Project Schedule).

Following the completion of final drawings, production of the assemblies shall begin. The Contractor shall use materials per the attached Bill of Materials (Section 3.3.7) that lists detailed information on the type of material and the quantity needed to produce the structural precast concrete members. Some items listed on the Bill of Materials shall be delivered to NIST so that NIST staff can connect the beams to the central column. These items are termed “connection components” (see Tables 1, 4, and 5). Separately, NIST will provide a Rebar Cut Sheet (Section 3.3.8) that identifies the shape (rebar bend diagrams), size, length, and quantity of reinforcing steel needed to produce the structural precast concrete members.

Before the concrete is cast, but after the forms have been constructed and the reinforcement and cast-in hardware have been positioned, supported, and secured, the Contractor shall provide NIST staff access to the Contractor’s fabrication plant to install strain gauges (Section 3.5) and to conduct an inspection (Section 5) of the forms, reinforcement and cast-in hardware to authorize casting of the concrete. Scheduling shall be coordinated by the Contractor with the NIST COR, and the agreed dates for NIST staff to visit shall be scheduled no fewer than five weeks in advance.

All concrete shall be cast during the NIST visit, which is anticipated to span no more than one week (Monday through Friday). Concrete cylinders (4 in. × 8 in.) complying with ASTM C31/C31M-26a shall be made using the same batch of concrete that is cast for each assembly (see Table 1 for the quantity of cylinders). It is preferred that the precast concrete members be delivered to NIST at once (i.e., as a single shipment that arrives at NIST during business hours and in accordance with Section 9). If delivery as a single shipment is not feasible, multiple deliveries over no more than three consecutive days are permitted, as long as those deliveries arrive at NIST during normal gate hours (see Section 7. General Information). In either case, the Contractor shall request concurrence by the NIST COR on the delivery method, date(s) and procedures prior to shipment.

Table 2 – Required Submittals

Submittals Specific Requirements *Proposal submittals Item A in Section 6.1

Shop drawings Item B in Section 6.1 Handling procedures Item C in Section 6.1 Material certificates Item D in Section 6.1

*[SOLICITATION TEXT TO BE REMOVED PRIOR TO AWARD: Proposal Submittals identified in Table 2 above are required as part of the initial quotation submission. Specific instructions to quoters and evaluation criteria are identified in the Combined Synopsis Solicitation document.]

Task 3.2 Design of Moment Frame Assemblies

The preliminary design drawings for the moment frame assemblies are included with this statement of work (see attached file named “Full-Scale Flexure Specimens Preliminary Design Drawings”). As described in the following subsections, these drawings specify the overall required dimensions and positioning of cast-in plates, angles, pipes, and debonding sleeves, as well as proposed details for the steel reinforcement. Materials are specified in Section 3.3.

3.2.1 Overall Dimensions

Pages 00 and 01 of the attached preliminary design drawings show the dimensions of the precast concrete moment frame assembly. The length of each beam shall be 190 in., the depth shall be 62 in., and the thickness shall be 12 in. The height of each column shall be 177 in., the depth shall be 28 in., and the width shall be 40 in.

3.2.2 Reinforcement

The attached preliminary design drawings show details for the deformed steel reinforcing bars to be used in each precast concrete beam and precast concrete column. Reinforcing materials are specified in Section 3.3.2.

3.2.3 Cast-in Lifting Anchors

The quantity, type, capacity and location of cast-in lifting anchors to lift the precast concrete beams and columns shall be determined by the Contractor.

The Contractor shall provide at least four ring clutches that are compatible with the Contractor-selected type of lifting anchors, as well as handling procedures for lifting and maneuvering of the precast concrete members using the cast-in lifting anchors. The ring clutches shall be delivered to NIST at least 10 days before the delivery of the specimens.

Task 3.3 Materials

The Contractor shall provide:

3.3.1 Form Materials

A. Forms: Rigid, dimensionally stable, nonabsorptive material, warp and buckle free, that will provide precast concrete surfaces within fabrication tolerances indicated; nonreactive with concrete.

B. Form-Release Agent: Commercially produced form-release agent that will not bond with, stain or affect hardening of precast concrete surfaces and will not impair subsequent surface or joint treatments of precast concrete.

3.3.2 Reinforcing Materials

A. Low-Alloy-Steel Reinforcing Bars: See ASTM A706/A706M–22, deformed (Grade 60).

B. Supports: The Contractor shall provide and use bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place according to PCI MNL–116–21 (Manual for Quality Control for Plants and Production of Structural Precast Concrete Products).

3.3.3 Steel Plate and Angle

A. Carbon-Steel Plates and Angles: To be in accordance with ASTM A36/A36M-19.

3.3.4 Weld Materials

A. Welding Electrodes: Comply with AWS standards for steel type and/or alloy being welded. As documented in the Preliminary Design Drawings, please see armoring detail (weld straight bar to angle) and built-up box detail (flare-bevel-groove weld longitudinal bars to top and bottom of built-up box section).

3.3.5 Concrete Materials

A. Portland cement: In accordance with ASTM C150-17, Type I or III.

B. Normal weight Fine Aggregates: See ASTM C33/C33M – 24a, except as modified by PCI MNL-116-21, with fine, non-reactive aggregates, with a maximum aggregate size of 3/8 in.

C. Water: Potable; free from deleterious material that may affect color stability, setting, or strength of concrete.

3.3.6 Concrete Mixtures

A. Prepare design mixture for the type of precast concrete required.

B. Self-consolidating concrete shall be used.

C. Design mixtures shall be prepared by a qualified independent testing agency OR by a qualified precast plant personnel at the contractor’s discretion.

D. Materials to be used for this project shall provide normal weight concrete with the following property:

1. Compressive strength (28-day): 8000 psi minimum.

3.3.7 Bill of Materials

Please see the attached Bill of Materials, which provides detailed information on the type of material and the quantity needed to produce the structural precast concrete members. NIST designs of the structural precast concrete members are based on materials with known mechanical properties. Specialized materials with specific vendor requirements are therefore required and included in the Bill of Materials. Material purchases from vendors other than those specified in the Bill of Materials require prior written approval from the NIST COR. A draft copy of the Bill of Materials is included as an attachment.

The Bill of Materials also indicates “connection components” that shall be delivered to NIST so that NIST staff can connect the beams to the central column. A “Yes” under the column heading “Deliver to NIST?”, indicates these items shall be delivered to NIST in accordance with the project schedule shown in Table 5.

3.3.8 Rebar Cut Sheet

Please see the attached Rebar Cut Sheet, which identifies the shape (rebar bend diagrams), size, and length of reinforcing steel needed to produce each structural precast concrete member (beam or column). Additionally, the Rebar Cut Sheet identifies “Material Test Bar”, which is material that shall be shipped to NIST for testing to characterize the mechanical properties of the steel reinforcement. Material test bars shall be from the same heat of steel as the reinforcing steel embedded in the precast concrete members.

3.3.9 Concrete Cylinders

In addition to the quantity of concrete cylinders the Contractor makes for their own purposes, a set of 24 concrete cylinders (4 in × 8 in) complying with ASTM C31/C31M-26a shall be made for each batch of concrete used to produce an assembly. These 24 cylinders per assembly shall be delivered to NIST in compliance with the project schedule (Section 6).

Task 3.4 Fabrication

The Contractor shall:

3.4.1 Form Fabrication

A. Forms: Accurately construct forms, mortar tight, of sufficient strength to withstand pressures due to concrete placement, vibration operations and temperature changes. The contractor shall coat contact surfaces of forms with a release agent before the reinforcement is placed. Avoid contamination of reinforcement by the release agent.

B. Maintain forms to provide completed structural precast concrete members of shapes, lines, and dimensions indicated in the final design drawings, within specified fabrication tolerances.

3.4.2 Fabrication of Moment Frame Assembly Components

A. Cast-in Lifting Anchors, Plates, Angles, Tubing, and Other Cast-In Hardware: Fabricate cast-in hardware with sufficient anchorage and embedment to comply with the final design drawings.

Accurately position loose hardware and secure in place before the concrete is cast. Position cast-in lifting hardware where it does not affect the position of the main reinforcement or concrete placement.

B. Reinforcement: Comply with recommendations in PCI MNL–116–21 for fabricating, placing, and supporting reinforcement.

1. Clean reinforcement of loose rust and mill scale, earth, and other materials that reduce or destroy the bond with concrete.

2. Accurately position, support, and secure reinforcement against displacement during concrete-placement and consolidation operations. Locate and support reinforcement by plastic tipped or corrosion resistant metal or plastic chairs, runners, bolsters, spacers, hangers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place according to PCI MNL–116–21.

3. Place reinforcing steel to maintain concrete cover indicated by the design drawings. Arrange, space, and securely tie reinforcing bars and their supports to hold reinforcement in position while placing concrete. Direct wire tie ends away from exposed concrete surfaces.

C. Comply with requirements in PCI MNL–116–21 and in this Section for measuring, mixing, transporting, and placing concrete. After concrete batching, no additional water may be added.

D. Place concrete in a continuous operation sufficient to prevent cold joints or planes of weakness from forming in precast concrete members.

E. Comply with PCI MNL–116–21 procedures for hot and cold-weather concrete placement.

F. Identify the orientation of the precast members as positioned in the form (i.e., distinguish the top, bottom, front, and back surfaces of the precast concrete members according to the design drawings). The orientation of each precast concrete member shall be identified with permanent markings.

G. Cure concrete according to requirements in PCI MNL–116–21. Cure members until their concrete compressive strength is sufficient to ensure that stripping the form does not negatively influence the performance or appearance of the final product.

3.4.3 Product tolerances

Table 3 – Acceptable Product Tolerances for Precast Concrete Members

Dimension Value Acceptable Tolerance Beams

Length 190 in ±1/2 in Width 12 in ±1/16 in Depth 62 in ±1/4 in

Columns Height 177 in ±1/2 in Width 40 in ±1/4 in Depth 28 in ±1/16 in

Beams and Columns Position of reinforcing ±1/4 in of design position

Position of cast-in plates, hardware, built-up sections, duct/sleeve, and through holes

±1/4 in of design position

Task 3.5 Instrumentation

To adequately characterize the performance of each precast concrete assembly during experimental testing at NIST, foil-type strain gauges need to be adhered to the surface of the reinforcing steel in the beams and columns. These strain gauges will be installed by NIST staff at the Contractor’s fabrication plant before the concrete is cast. Scheduling shall be coordinated by the Contractor with the NIST COR. The agreed dates for strain gauge installation shall be decided no less than five weeks in advance.

The strain gauge installation process requires surface preparation of the steel (abrasion of the steel surface using a belt sander and application of chemical solutions to clean the surface of the steel), adhering the strain gauges to the surface of the steel using a quick-bonding, liquid adhesive, checking the electrical resistance of the strain gauge lead wires, applying a rubber tape to protect the strain gauges from moisture and mechanical damage, labeling the strain gauges, and routing and bundling the strain gauge lead wires to a common point exiting the formwork using zip ties.

The Contractor shall ensure that NIST staff have safe access to the reinforcing steel so that the strain gauge process described above can be followed. NIST staff will apply the strain gauges after the reinforcing bar cages are tied. The Contractor shall coordinate with NIST such that sufficient time to install strain gauges on all assemblies is made available to NIST for this purpose

4. Delivery, Storage, and Handling

Delivery of the precast concrete members to the NFRL (Bldg. 205) at NIST, Gaithersburg, shall be coordinated by the Contractor with the NIST COR. The NFRL is accessible by vehicle (e.g., flatbed truck) through a rollup door with dimensions of approximately 20 ft. wide × 30 ft. high.

The laboratory has two overhead cranes, each with a rated capacity of 20 tons (40,000 lbf).

NIST staff will unload the precast concrete members from the delivery truck inside the laboratory using one of the overhead cranes. The Contractor shall include compatible lifting clutches with delivery of the precast concrete members that will be used for lifting the precast concrete members using the cast-in lifting anchors (Section 3.2.3). Handling, storage, and delivery of the precast concrete members by the Contractor shall comply with the following requirements. The Contractor shall:

A. Deliver all precast concrete members in such quantities and at such times to ensure compliance with the agreed upon project schedule (see Section 6). Once delivery of the precast concrete members is authorized by the NIST COR, after completion of required inspections (see Section 5), the Contractor shall request concurrence by the NIST COR on the delivery method, date(s) and procedures prior to shipment.

B. Handle and transport members in a manner to avoid excessive stresses that could cause cracking or other damage.

C. Ensure units are stored at all times with adequate dunnage and bracing, and protect units to prevent contact with soil, and to control cracking, distortion, warping or other physical damage.

D. Unless otherwise specified, store and transport members with dunnage across full width of each bearing point.

F. Place dunnage of even thickness between each member.

G. Delivery shall be FOB destination. FOB Destination means: The Contractor shall pack and mark the shipment in conformance with carrier requirements, deliver the shipment in good order and condition to the point of delivery specified in the purchase order, be responsible for any loss of and/or damage to the goods occurring before receipt and acceptance of the shipment by the consignee at the delivery point specified in the purchase order; and pay all charges to the specified point of delivery. The Contractor shall deliver all Line Items to:

The National Institute of Standards and Technology:

100 Bureau Drive Building 205, Room 125 Gaithersburg, MD 20899 Enter via Gate F (see Figure 1 in Section 7)

5. Inspection and Acceptance

In addition to the inspection and acceptance terms articulated in Federal Acquisition Regulation 52.212-4, the Government reserves the right to perform such performance tests and evaluations as defined below to verify specified system performance. The Contractor has the right to be present during the tests and evaluations, if performed, at the Contractor’s expense. Inspection and acceptance will take place on the NIST Gaithersburg campus in building 205, room 125.

Acceptance of the precast concrete members will be based on demonstration, described below, that tolerances are adequate for the precast concrete members to perform as intended.

Structural precast concrete members that do not comply with acceptability requirements in PCI MNL-116-21, including concrete strength and manufacturing tolerances, will not be accepted.

Additional requirements for inspection, evaluation and acceptance are specified in the following.

A. Pre-delivery: The precast concrete members will be inspected by NIST staff at the Contractor’s facility prior to concrete placement, but after the forms have been constructed and the reinforcement and cast-in hardware have been positioned, supported, and secured. NIST staff will inspect the forms, the reinforcement and cast-in hardware to verify that they are consistent with the shop drawings within the specified fabrication tolerances.

1. NIST staff will travel to the Contractor’s fabrication plant to perform these inspections. Scheduling the inspections shall be coordinated by the Contractor with the NIST COR. The agreed date(s) of inspection shall coincide with the dates that NIST will be at the Contractor’s fabrication plant to install strain gauges.

B. Post-delivery: Upon delivery of the precast concrete members to NIST, NIST staff will inspect each member for damage sustained during transportation.

1. If inspection determines that chipped, spalled, or cracked members require repair, the Contractor shall repair or replace the members, such that after repair or replacement, their structural adequacy, serviceability and durability are adequate for the precast members to perform as intended.

6. Deliverables and Schedule

Table 4 lists the deliverables for this contract along with the date when each deliverable is required, in accordance with the schedule specified in Section 6.2. The deliverables include both products (as listed in Table 1) and submittals (as listed in Table 2). Detailed requirements for the submittals are specified in Section 6.1.

Table 4 – Contract Deliverables

Deliverables Delivery Date (calendar days) Submittals Kick-off Meeting Within 14 days after contract award.

Shop drawings 21 days after award Handling procedures 110 days after award Material certificates 110 days after award Products Precast concrete lifting clutches (quantity: at least 4)

110 days after award

Precast concrete beams (quantity: 6) 120 days after award Precast concrete columns (quantity: 3) 120 days after award 4 in. × 8 in. concrete cylinders (quantity: 24 cylinders per assembly)

120 days after award

Connection components 120 days after award Material test bar from the same heat of steel as the reinforcing steel in the beams and columns

120 days after award

Submittals for Optional Tasks Material certificates 110 days after option is exercised, if exercised.

Products for Optional Tasks Optional tasks: Additional precast beams (quantity: as many as 4) and columns (quantity: as many as 2) if option item(s) are exercised

120 days after option is exercised, if exercised.

4 in. × 8 in. concrete cylinders (quantity: 24 cylinders per assembly)

120 days after option is exercised, if exercised.

Connection components 120 days after option is exercised, if exercised.

Material test bar from the same heat of steel as the reinforcing steel in the beams and columns

120 days after option is exercised, if exercised.

6.1 Required Submittals/Deliverables

A. Kick-off Meeting:

The Contractor shall participate in a Kick-off Meeting to take place within 14 days after contract award to discuss the contractor’s quotation, plans forward, and deliverable status. The Kick-off meeting shall be held virtually via a secure online conferencing platform, such as MS TEAMS or Zoom. The Contractor shall meet the NIST team, ask questions, and discuss their work plan.

B. Shop Drawings:

1. Detail fabrication of the precast concrete members.

2. Show plan views, elevation views, dimensions, shapes, and cross sections of each precast concrete member; indicate openings, blockouts, recesses, through holes, types, sizes and shapes of reinforcement and other cast-in hardware.

3. Indicate welded connections by AWS standard symbols. Show size, length, and type of each weld.

4. Detail loose and cast-in hardware, including cast-in lifting anchors.

C. Handling Procedures:

Include handling procedures for rotating, lifting, and placement of the precast concrete beams and columns from a horizontal orientation to a vertical orientation (beam depth is perpendicular to the floor in a vertical orientation) and from a vertical orientation to a horizontal orientation.

D. Material Certificates:

Signed by manufacturers certifying that each of the following items complies with requirements.

1. Cementitious materials and any concrete admixtures.

2. Reinforcing materials.

3. Structural steel.

6.2 Schedule

All products and services shall be delivered in accordance with the schedule specified in Table

5. All dates are specified in calendar days. The total period of performance, inclusive of any options exercised, is 14 months from the date of award. The delivery of the base precast concrete beams and columns (i.e., 3 assemblies) shall occur within 120 days of the date of award. The delivery of the optional additional precast concrete beams and columns, if exercised, shall be within 120 days of the date of exercise. Options may be exercised anytime within the effective period of performance.

Table 5 – Project Schedule

Description Date (Calendar Days) Shop drawings delivered to NIST via email 21 days after date of award NIST completes review of shop drawings, to include possible revisions.

7 days after receipt

Revised shop drawings, as applicable, based on comments from NIST review are delivered to NIST

42 days after date of award

NIST completes review of revised shop drawings and approves production to begin

49 days after date of award

NIST applies strain gauges to reinforcing steel embedded in the beams and columns, inspects assembled forms, reinforcement, and cast-in hardware at the fabrication plant and authorizes placement of the concrete and delivery of the precast concrete members to NIST

Prior to the concrete cast

Handling procedures, material certificates and lifting clutches delivered to NIST

110 days after award

Precast concrete beams (quantity: 6) and columns (quantity: 3), 4 in. × 8 in. cylinders, connection components, and material test bar delivered to NIST

120 days after award

Delivery of material certificates associated with optional precast concrete beams and columns

110 days after date option is exercised, if

Delivery of optional precast concrete beams (quantity: up to 4) and columns (quantity: up to 2) to NIST, 4 in. × 8 in. cylinders, connection components, and material test bar delivered to NIST

120 days after date option is exercised, if

Quality Control Requirements

The Contractor shall provide the following quality control support:

A. The Contractor shall participate in PCI’s Plant Certification Program prior to award and be designated a PCI-certified plant for Group C [Commercial (Structural) Products], Category C1 or C3, to be effective at time of award and throughout the award period of performance.

Certification shall be maintained throughout the production of the precast concrete members. Production shall immediately stop if at any time the Contractor’s certification is revoked, regardless of the status of completion of contracted work. Production will not be allowed to restart until the necessary corrections are made and certification has been re-established. In the event certification(s) cannot be re-established in a timely manner, resulting in project delays, the contractor, at no additional cost to the government, will outsource the remainder of the precast concrete members to be produced at a PCI-certified plant

B. Welding: Procedures and personnel shall be qualified according to AWS D1.1/D1.1M:2025, “Structural Welding Code – Steel” and AWS D1.4/D1.4M: 2018- AMD1, “Structural Welding Code – Steel Reinforcing Bars”.

C. Quality Control Standard: For manufacturing procedures, testing requirements, and quality control recommendations for the required types of members, comply with PCI MNL-116-21, “Manual for Quality Control for Plans and Production of Structural Concrete Products”.

7. General Information

The Contractor shall furnish, or cause to be furnished, the full name (first and last) and citizenship status of the delivery driver(s) to the NIST COR at least 24 hours in advance (for non-U.S. citizens, at least 7 days in advance) of their arrival at the NIST Gaithersburg campus.

The COR will submit the name(s) and citizenship information to the NIST Visitor Registration system for the driver(s) to enter campus.

The delivery shall arrive on campus through Gate F, which is located at the intersection of Muddy Branch Rd. and East Dr., as indicated by the red location marker on the map in Figure 1.

The location of the building to which the precast concrete members shall be delivered (Bldg.

205) is indicated by the solid black circle in Figure 1. Gate F is typically open Monday through Friday from 6:00 a.m. to 3:30 p.m. (Eastern Standard Time). The hours of operation for Gate F are subject to change due to special circumstances, including federal holidays, weather, or emergencies. The COR will inform the contractor of any changes or potential changes in the hours of operation of Gate F as soon as the COR is made aware.

Figure 1. Location of entry to NIST for delivery of the precast concrete assemblies.

RISK ASSESSMENT

The contractor will not have access to a system that processes non-public or sensitive DOC information. All work to be performed under this contract is considered to be No Risk.

Installation and Training: No installation or training is required by the contractor.

MISCELLANEOUS INFORMATION

Safety: The Contractor employees must be responsible for knowing and complying with all installation safety prevention regulations. Such regulations include, but are not limited to, general safety, fire prevention, and waste disposal.

Security: NIST is a restricted campus. An identification badge is required for entry into buildings and is shown to the armed Security Police when entering the campus. Regular business hours are Monday through Friday, (8:00 am to 5:00 pm) Eastern Time, excluding Federal holidays and NIST closures.

Identification Badges: Contractor employees must comply with NIST identification and access requirements. Each Contractor employee must wear a visible identification badge provided by the NIST Security Office.

Vehicle Registration: All Contractor employees must register their vehicles with the NIST Security Office to gain access to the campus. A valid driver’s license, Government-furnished civilian ID, proof of insurance and current registration must be presented to the NIST Security Office, at which time a NIST vehicle pass will be issued. The pass must be displayed on the vehicle in accordance with NIST Security Office instructions.

Please refer to the following web site for additional Visitor Information:

http://www.nist.gov/public_affairs/visitor/

Further Delivery Guidance:

If the delivery driver is not a U.S. citizen, the following rules apply:

• Lawful Permanent Resident (Green Card Holding) visitors must present an alien registration card (Green Card) upon arrival

• Non-Permanent Resident visitors must present a valid passport (original only) upon arrival

If the delivery driver is a U.S. citizen:

• U.S. citizens must present a state-issued driver’s license or identification card, or a valid U.S. passport upon arrival. NIST can only accept a state-issued driver’s license or identification card for access to federal facilities if issued by states that are REAL ID compliant or have an extension.

http://www.nist.gov/public_affairs/visitor/