Final Design Specifications_Gravel Pad_RV01.pdf

CIVIL ENGINEERING UNIT MIAMI

15608 S.W. 117TH AVENUE

MIAMI, FLORIDA 33177

OPERATION RIVER WALL

CONTRACT SPECIFICATIONS

DESIGN-BUILD

ARMORY AND MAGAZINE INSTALLATION – GRAVEL PAD

REQUIREMENTS

AT

UNITED STATES COAST GUARD

FACILITY – RIO GRANDE,

WESLACO, TEXAS

PROJECT NUMBER: 31024368

FINAL DESIGN: 06 NOVEMBER 2025

TABLE OF CONTENTS

DIVISION 01 GENERAL REQUIREMENTS

Section 01 11 00 Summary of Work

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OPERATION RIVER WALL,

FACILITY - RIO GRANDE, WESLACO, TEXAS

Section 01 11 00

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1. GENERAL DESCRIPTION

1.1.1. The work under this contract consists of providing all labor, materials, equipment, and supervision necessary to design and construct a gravel pad for the installation of two temporary modular structures (Armory and Magazine) totaling approximately 1,200 square feet, including excavation of #57 stone, and tie-in to the exiting curb. The work shall also include protection of the exiting conex box, minor grading for drainage, and site restoration at 2611 W. Vo Tech drive, Weslaco, Texas 78596.

1.1.2. This work is classified as Design-Build. The Contractor shall verify existing field conditions, design the gravel pad based on provided load information, and perform all work required to deliver a complete and usable installation.

1.1.3. The gravel pad shall be designed to:

A. Provide level, stable bearing for two modular units: one Armory (20’x8’) and one Magazine (22’x7’).

B. Match the elevation of the existing concrete curb located west of the main building (flush threshold condition).

C. Maintain six feet of clearance around each structure six feet separation between units.

D. Support combined static and live loads up to 30,000 lbs per structure, including vehicular access during placement.

E. Provide positive drainage away from the building and adjacent areas.

1.1.4. All work shall comply with applicable codes, OSHA 29 CFR 1926, and recognized construction standards.

1.1.5. The gravel pad shall be installed in the grassy area between the existing concrete drive and the existing black conex container shown on site.

1.1.6. Vehicular access shall remain on the exiting concrete during construction. Do not operate heavy equipment or vehicles on turf outside defined pad limits.

1.1.7. The existing conex container located approximately 20 feet west of the curb shall be protected in place. Provide temporary plywood shielding, fencing, or other protective means to prevent damage.

1.1.8. Maintain a minimum six feet separation between the gravel pad and the conex container unless otherwise approved by COR.

1.2. DESIGN-BUILD RESPONSIBILITIES

1.2.1. The Contractor shall field-verify dimensions, slopes, and elevations prior to construction.

1.2.2. The Contractor shall prepare a layout and design package indicating pad limits, thickness, material specifications, and elevations relative to the existing curb.

1.3. WORK INCLUDES

1.3.1. Clearing and Subgrade Preparation:

Section 01 11 00

A. Remove vegetation, topsoil, and debris within pad limits.

B. Compact subgrade to 95% maximum dry density (ASTM D1557).

C. Undercut and replace soft or yielding areas with compacted fill.

1.3.2. Base Course Construction:

A. Install crushed stone aggregate (ASTM C33 #57 or equivalent).

B. Compact each lift to 95% of maximum dry density.

C. Provide a minimum six in compacted thickness, adjusted as necessary for curb elevation.

D. Provide a final top layer of compacted stone screenings or fine aggregate graded smooth and even to remove tripping hazards.

E. Finish surface to +/- 1/2 in tolerance; slope 1.5-2% for drainage.

1.3.3. Edge Restraint and Containment:

A. Install 6x6 pressure-treated South Pine timbers around the pad perimeter to provide positive edge restraint.

B. Overlap corners and anchor with 18 in galvanized rebar or steel dowels at 3 feet o.c.

C. Top of gravel shall finish one in below top of timber border.

D. Adjust number of timber courses to maintain flush elevation and accommodate ground slope.

1.3.4. Optional Geotextile Separator:

A. Provide nonwoven geotextile fabric (8 0z/yd minimum) beneath entire aggregate section.

B. Overlap edges 18 in and extends beyond pad limits 12 in.

1.3.5. Drainage and Finish Grading:

A. Provide a uniform surface slope of 1.5% - 2% away from structures.

B. Ensure no ponding or water flows toward the building.

1.4. SAFETY AND ENVIRONMENTAL CONTROLS

1.4.1. Comply with OSHA 29 CFR 1926

1.4.2. Protect existing utilities, concrete pavement, and the conex container from damage.

1.4.3. Provide temporary erosion and sediment controls as needed.

1.4.4. Maintain safe vehicle and pedestrian access at all times.

1.4.5. Repair any damage to existing facilities in kind at no cost to the

Government.

1.5. SPECIAL WORK REQUIREMENTS

A. The site superintendent must be:

(1) An employee of the prime contractor,

(2) Be always on-site while work is conducted,

(3) May also be the Quality Control Manager,

(4) Speak fluent English, and

B. The Contractor’s Quality Control Manager is responsible for all quality control and quality assurance aspects of the project.

C. Comply with all hot work requirements of the USCG unit.

D. Coordinate all staging and laydown areas with the Contracting Officer’s Representative (COR) prior to commencement of work.

1.6. PROJECT PERFORMANCE PERIOD

A. The total contract performance period shall include the time needed to complete administrative processes, review, and approve material submittals, complete the base bid, any inspections, complete all project record (closeout) documents, and Governmental review of submittals. After work begins at the site, perform the work continuously during normal working hours and show daily progress until all work is complete.

B. The USCG intent is to complete the gravel pad as quickly as practical to support delivery of the Armory and Magazine units.

The Contractor is encouraged to propose accelerated sequencing and early completion where feasible, provide all quality, compaction, and safety requirements are met.

C. The total contract performance period is as follows:

Base Bid: 10 Calendar days Total Contract Performance Period:

10 Calendar days

1.7. HOLD POINT CONSTRUCTION INSPECTIONS

A. None required.

1.8. LOCATION

The work is located at:

U.S. Coast Guard Facility Rio Grande, 2611 W. Vo Tech drive, Weslaco, Texas 78596.

1.9. WORK HOURS AND PROGRESS CHART SPECIAL TIME EVENTS AND ACTIVITIES

1.9.1. Normal Working Hours

(1) Perform all work at the site from Monday through Saturday from 7:00am to 4:00 pm.

B. Performing the work beyond the listed working hours is at the discretion of the COR. The Government may reject any such request without impacting cost and performance period of the Contract.

(1) Compose the request to include projected day(s) and hours of the work, list of expected personnel including sub-contractors and the planned work to be performed during this period. Indicate in the request that the planned work is to be performed at no additional cost to the Government.

(2) The Contractor shall request approval three working days in advance of the requested time.

1.10. AVAILABILITY OF UTILITY SERVICES

Reasonable amounts of the following utilities will be made available to the Contractor without charge.

A. Electricity, and B. Potable Water.

The Contractor shall pay all costs incurred in connecting, converting, and transferring the utilities to the work. The contractor shall be responsible for making connections including providing back flow preventers, transformers and for disconnection.

The contractor shall provide temporary toilet facilities for their personnel.

1.11. CONTRACTOR USE OF PREMISES

The work shall be performed on a USCG operational military installation. Become familiar with and obey fire, traffic, and security regulations. Personnel shall not stray from the immediate area of work or direct avenues of ingress and egress unless authorized in advance by the COR. Protect and isolate the working area as per industry standard. All areas affected by the Contractor shall be restored to its original condition.

1.12. CLEANUP

A. The Contractor shall keep the work area free from accumulations of waste materials daily. The Contractor shall not use USCG waste disposal facilities.

1.13. RECEIPT OF MATERIALS

The Contractor is responsible to receive all equipment, materials, and supplies.

1.14. DELIVERY AND STORAGE

The Contractor is responsible for the proper transport and storage of all equipment and materials.

1.15. FINAL INSPECTION AND ACCEPTANCE

Electronically submit a written request for final inspection acceptance to the COR in accordance with the paragraph titled Special Prior Notice Notifications and Requests.

1.16. WARRANTIES

Endorse all warranties or guarantees to the Government.

1.17. TRAINING

The Contractor shall provide training to USCG unit personnel in the operation of any new equipment. Associated Operation and Maintenance Manuals shall be approved and provided to the unit prior to the training.

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