Specification 34 73 13 Aircraft Tiedowns.pdf

FCLP Phase 9 - Wallops Flight Facility 1696789

SECTION 34 73 13

AIRCRAFT TIEDOWNS

11/19

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WELDING SOCIETY (AWS)

AWS D1.4/D1.4M (2011) Structural Welding Code - Reinforcing Steel

ASTM INTERNATIONAL (ASTM)

ASTM A615/A615M (2020) Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

NATIONAL INSTITUTE FOR OCCUPATIONAL SAFETY AND HEALTH (NIOSH)

NIOSH 81-123 (1981) Occupational Health Guideline for Chemical Hazards, (Vols. I, II, and III)

1.2 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. When used, a code following the "G" classification identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

As-Built Drawings; G

SD-06 Test Reports

Concrete; G

SD-07 Certificates

Mooring Devices

Reinforcing Steel

1.3 AS-BUILT DRAWINGS

Submit as-built drawings that provide current factual information, including deviations from and amendments to the drawings and changes in the work, concealed and visible.

SECTION 34 73 13 Page 1

FCLP Phase 9 - Wallops Flight Facility 1696789

PART 2 PRODUCTS

2.1 MATERIALS

Do not use a combination of materials that forms an electrolytic couple, which accelerates corrosion in the presence of moisture, unless moisture is permanently excluded from the junction of such metals.

2.2 MOORING DEVICES

2.3 CONCRETE

Submit complete concrete mix design including all cement, aggregate, and concrete tests and compliance certificates. Use concrete in accordance with Section 32 13 14.4 CONCRETE PAVING FOR SMALL AIRFIELD PROJECTS.

2.4 REINFORCING STEEL

Use reinforcing steel in accordance with ASTM A615/A615M Grade 40 or 60 for #4 tie bars and Grade 60 for #6 vertical bars. Weld steel into cages in accordance with AWS D1.4/D1.4M and insert securely in the piers, in position and alignment, as shown in the drawings, prior to concrete placement. Submit certificates of compliance stating that the reinforcing steel meets the specified requirements.

PART 3 EXECUTION

3.1 MOORING POINTS IN NEW RIGID PAVEMENTS OR CONCRETE PADS

Install the mooring device within plus or minus 4 in of the location in existing slab to be demolished. Set the top of the mooring device within 1/4 in of the plan pavement surface elevation, but not higher than the pavement surface. Install the mooring device prior to placement of the concrete pavement. . Keep hand finishing of the concrete around the mooring devices to a minimum.

3.2 SAFETY

In addition to Safety Requirements contained in the Contract Clauses;

prevent employee respiratory, eye or skin contact with Portland cement.

Provide and require employees to use and dispose or clean the following in accordance with the provisions of the National Institute for Occupational Safety and Health NIOSH 81-123:

a. Impervious clothing, boots, and gloves.

b. Splash-proof safety goggles and face shields.

c. Respiratory protection equipment.

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