1、*USACE / NAVFAC / AFCESA / NASA UFGS-34 73 13 (April 2008)-Preparing Activity: USACE SupersedingUFGS-34 73 13 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated March 2008*SECTION TABLE OF CONTENTSDIVISION 34 - TRANSPORTATIONSECTION 34 73 13MOORING AND GRO
2、UNDING POINTS FOR AIRCRAFT04/08PART 1 GENERAL1.1 REFERENCES1.2 SUBMITTALS1.3 AS-BUILT DRAWINGSPART 2 PRODUCTS2.1 METALS2.2 MOORING DEVICES2.3 GROUNDING RODS2.4 COPPER CONDUCTORS2.5 GROUNDING CONNECTORS2.6 CONCRETE2.7 REINFORCING STEELPART 3 EXECUTION3.1 MOORING POINTS IN NEW RIGID PAVEMENTS OR CONCR
3、ETE PADS3.2 MOORING POINTS IN EXISTING RIGID PAVEMENTS3.2.1 Coring Requirements3.2.2 Cleanup3.3 MOORING POINTS INSTALLED IN DRILLED PIERS3.3.1 Government Inspection3.3.2 Installation Procedures3.4 GROUNDING POINTS3.4.1 Pavement Recess3.4.2 Installation3.4.2.1 Existing Rigid Pavement3.4.2.2 New Rigid
4、 Pavement3.4.2.3 Flexible Pavement3.4.3 Interconnection3.5 TESTS- End of Section Table of Contents -SECTION 34 73 13 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-34 73 13 (April 2008)-Preparing Activity:
5、USACE SupersedingUFGS-34 73 13 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated March 2008*SECTION 34 73 13MOORING AND GROUNDING POINTS FOR AIRCRAFT04/08*NOTE: This guide specification covers requirements for mooring and static grounding points for Army
6、and Air Force aircraft.Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate information.Remove information and requirements not required in respective project, whether or not brack
7、ets are present.Comments and suggestions on this guide specification are welcome and should be directed to the technical proponent of the specification. A listing of technical proponents, including their organization designation and telephone number, is on the Internet.Recommended changes to a UFGS
8、should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: The items specified will provide ground points with a resistance of no more than 10,000 ohms to ground if the resistance of the surrounding soil or rock is less than 2,000,000 ohm-centimeters. In high resistivity soils, ove
9、r 2,000,000 ohm-centimeters, 3 meter (10 foot) or sectional rods may be used to obtain the required resistivity to ground; however, where rock is encountered, additional rods, a counterpoise, or ground grid may be necessary. Resistance to ground for static electricity dissipation may be as much as 1
10、,000,000 ohms. Static grounds are not designed for aircraft lightning protection or for equipment grounding.SECTION 34 73 13 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Grounding devices installed in hangar floors are intended to serve for
11、airplane static and equipment grounding. The resistance to ground for each device will be no more than 25 ohms. This requirement should not be a problem since the rods will be bonded to the facility ground. The resistance to ground of grounding rods installed in all other areas should be no more tha
12、n 10,000 ohms.Coordination with grounding requirements listed in other sections should be done to avoid duplication.It is recommended that this specification, and other contract requirements for mooring and grounding points, be coordinated with ER 1110-3-430, Design of US Army Airfield Aircraft Moor
13、ing and Grounding Points for Rotary Wing Aircraft.The mooring points in this specification are applicable to Army rotary wing aircraft only. The grounding points are applicable to both Army and Air Force aircraft.*1.1 REFERENCES*NOTE: This paragraph is used to list the publications cited in the text
14、 of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title.Use the Reference Wizards Check Reference feature when you add a RID outside of the Sections Reference Article to automatical
15、ly place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue dates.References not used in the text will automatically be deleted from this section of the project specification when you choose to reconcile references in the publish print
16、process. *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 (2005; Errata 2005) Structural Welding Code - Reinforcing SteelASTM INTERNAT
17、IONAL (ASTM)ASTM A 436 (1984; R 2006) Standard Specification for SECTION 34 73 13 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Austenitic Gray Iron CastingsASTM A 615/A 615M (2007) Standard Specification for Deformed and Plain Carbon-Steel B
18、ars for Concrete ReinforcementASTM B 371/B 371M (2006) Standard Specification for Copper-Zinc-Silicon Alloy RodASTM B 8 (2004) Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or SoftASTM C 94/C 94M (2007) Standard Specification for Ready-Mixed ConcreteNATIONA
19、L FIRE PROTECTION ASSOCIATION (NFPA)NFPA 407 (2007; Errata 2007) Standard for Aircraft Fuel ServicingU.S. ARMY CORPS OF ENGINEERS (USACE)COE CRD-C 300 (1990) Specifications for Membrane-Forming Compounds for Curing ConcreteUNDERWRITERS LABORATORIES (UL)UL 467 (2007) Standard for Grounding and Bondin
20、g Equipment1.2 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the submittals required for the project. Submittals should be kept to the minimum required for adequate quality control.A “G” following a
21、 submittal item indicates that the submittal requires Government approval. Some submittals are already marked with a “G”. Only delete an existing “G” if the submittal item is not complex and can be reviewed through the Contractors Quality Control system. Only add a “G” if the submittal is sufficient
22、ly important or complex in context of the project.For submittals requiring Government approval on Army projects, a code of up to three characters within the submittal tags may be used following the “G“ designation to indicate the approving authority. Codes for Army projects using the Resident Manage
23、ment System (RMS) are: “AE“ for Architect-Engineer; “DO“ for District Office (Engineering Division or other organization in the District Office); “AO“ for Area Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes SECTION 34 73 13 Page 4Provided by IHSNot for ResaleNo reproduction or
24、networking permitted without license from IHS-,-,-following the “G“ typically are not used for Navy, Air Force, and NASA projects.Choose the first bracketed item for Navy, Air Force and NASA projects, or choose the second bracketed item for Army projects.*Government approval is required for submitta
25、ls with a “G“ designation; submittals not having a “G“ designation are for Contractor Quality Control approval. information only. When used, a designation following the “G“ designation identifies the office that will review the submittal for the Government. The following shall be submitted in accord
26、ance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-02 Shop DrawingsAs-Built Drawings; G; G, _Drawings as specified.SD-06 Test ReportsConcrete; G; G, _Complete concrete mix design including all cement, aggregate, and concrete tests and compliance certificates.TestsAn independent testing agencys certi
27、fied reports of inspections and tests, including analysis and interpretation of test results. Each report shall be properly identified. Describe Test methods and standards used.SD-07 CertificatesMooring DevicesCertificate of compliance stating that the mooring devices meet the specified requirements
28、.Grounding RodsCertificate of compliance stating that the grounding rods meet the specified requirements.Grounding ConnectorsCertificate of compliance stating that the grounding connectors meet the specified requirements.Copper ConductorsCertificate of compliance stating that the copper conductors m
29、eet the specified requirements.Reinforcing SteelSECTION 34 73 13 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Certificate of compliance stating that the reinforcing steel meets the specified requirements.1.3 AS-BUILT DRAWINGSSubmit AS-Built
30、Drawings that provide current factual information, including deviations from and amendments to the drawings and changes in the work, concealed and visible.PART 2 PRODUCTS2.1 METALSDo not use combination of materials that forms an electrolytic couple, which accelerates corrosion in the presence of mo
31、isture, unless moisture is permanently excluded from the junction of such metals.2.2 MOORING DEVICESMooring devices shall be cast in ductile iron 80-55-06 conforming to ASTM A 436. The device shall be as shown in the contract drawings. Submit certificates of compliance on the devices.2.3 GROUNDING R
32、ODSGrounding rods shall conform to UL 467 and shall be made of copper-clad steel. The rods shall be not less than 19 mm 3/4 inch in diameter and not less than 3 m 10 feet long. The copper cladding shall conform to the applicable requirements of ASTM B 371/B 371M, Copper Alloy UNS Nos. c 69400, c 694
33、30, c 69440 or c 69450. The copper cladding shall be not less than 0.25 mm 0.010 inches thick at any point and shall comply with adherence requirements and the banding requirements of UL 467. Submit certificates of compliance on the grounding rods. Rods shall be provided with a closed eye or shepher
34、ds hook bend having an inside diameter of not less than 32 mm 1-1/4 inches. The rods shall be pointed unless used for flexible pavement. For flexible pavement, the rods shall have 19 mm 3/4 inch American standard rolled threads for attachment of a bottom anchor and shall be equipped with a screw-typ
35、e bottom having a wing diameter of not less than 152 mm 6 inches.2.4 COPPER CONDUCTORSCopper conductors shall be bare number 4 AWG copper wire conforming to ASTM B 8. Submit certificates of compliance on the copper conductors.2.5 GROUNDING CONNECTORSGrounding connectors shall comply with UL 467 for
36、the required application. Submit certificates of compliance on the grounding connectors.2.6 CONCRETE*NOTE: ASTM C 94 is set up to use Type I cement. If other types of cement are required due to site conditions, the designer should specify the proper cement type. A 28-day 40 MPa (6000 psi) compressiv
37、e strength concrete is required for mooring point installation in drilled piers and in cored existing SECTION 34 73 13 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-pavements. New rigid pavement 150 mm (6 inches) or greater in thickness with
38、a minimum 90-day flexural strength of 3.5 MPa (500 psi) should be adequate for cast-in-place mooring point installation. Remove this paragraph if concrete is not required.If concrete is specified in another section, a submittal for the mix design should not be required by this specification, and thi
39、s section should be edited accordingly.*Concrete shall be in accordance with Section 32 13 11 CONCRETE PAVEMENT FOR AIRFIELDS AND OTHER HEAVY-DUTY PAVEMENTS ASTM C 94/C 94M. The concrete shall be air entrained and have a minimum compressive strength of 40 MPa 6000 psi. The concrete shall have the fo
40、llowing properties: Nominal maximum aggregate size of 25 mm 1 inch, air content of 6 percent, and a maximum slump of 100 mm 4 inches for drilled piers and 50 mm 2 inches for all other applications. Submit certificates of compliance of the concrete mix.2.7 REINFORCING STEELReinforcing steel shall con
41、form to ASTM A 615/A 615M Grade 40 or 60 for #4 tie bars and Grade 60 for #6 vertical bars. Steel shall be welded into cages in accordance with AWS D1.4/D1.4M and inserted securely in the piers, in position and alignment, as shown, prior to concrete placement. Submit certificates of compliance of th
42、e reinforcing steel.PART 3 EXECUTION*NOTE: Types of mooring or grounding point installations not needed should be edited out.*3.1 MOORING POINTS IN NEW RIGID PAVEMENTS OR CONCRETE PADSInstall the mooring device within plus or minus 50 mm 2 inches of the location shown on the contract drawings. The t
43、op of the mooring device shall be set within 6 mm 1/4 inch of the plan pavement surface elevation, but not higher than the pavement surface. Install the mooring device prior to placement of the concrete pavement. Place concrete and reinforcement in accordance with Section _. Hand finishing of the co
44、ncrete around the mooring devices shall be kept to a minimum.3.2 MOORING POINTS IN EXISTING RIGID PAVEMENTS*NOTE: Existing rigid pavement must be equal to or greater than 150 mm (6 inches) thick and in good condition, with very few cracked slabs. This is required to provide adequate mass to resist the horizontal component of the mooring point load.*Install the mooring points in 305 plus or minus 13 mm 12 plus or minus 1/2 inch dia
