1、*USACE / NAVFAC / AFCESA / NASA UFGS-31 31 16.20 (April 2006)-Preparing Activity: NAVFAC Replacing without changeUFGS-02362 (August 2004)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated 1 April 2006Latest change indicated by CHG tags*SECTION TABLE OF CONTENTSDIVISIO
2、N 31 - EARTHWORKSECTION 31 31 16.20BASALTIC TERMITE BARRIER04/06PART 1 GENERAL1.1 REFERENCES1.2 SUBMITTALS1.3 STORAGE AND HANDLINGPART 2 PRODUCTS2.1 BASALT SANDPART 3 EXECUTION3.1 PREPARATION3.2 PLACEMENT3.2.1 Slab-on-Grade3.2.1.1 Utility Trenches3.2.1.2 Edges3.2.2 CMU Block Walls3.2.3 Fence Posts a
3、nd Utility Poles3.2.4 Retaining Walls- End of Section Table of Contents -SECTION 31 31 16.20 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-31 31 16.20 (April 2006)-Preparing Activity: NAVFAC Replacing with
4、out changeUFGS-02362 (August 2004)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated 1 April 2006Latest change indicated by CHG tags*SECTION 31 31 16.20BASALTIC TERMITE BARRIER04/06*NOTE: This guide specification covers the requirements for a basaltic termite barrier.
5、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 should be submit
6、ted as a Criteria Change Request (CCR).Use of electronic communication is encouraged.Brackets are used in the text to indicate designer choices or locations where text must be supplied by the designer.*NOTE: This specification consists of furnishing and placing of graded basaltic sand as a physical
7、barrier, below the concrete slab or foundation of a structure to prevent the entry of Formosan ground termites into wood components of the structure, similar to laying down a chemical barrier of soil termiticide treatments. The use of this preventive measure does not preclude the use of other preven
8、tive measures such as chemical treatment, physical termite mesh control barrier system and and pressure treated lumber for construction to provide maximum protection to the structure. In fact, it is recommended that this material be used in conjunction with chemical treatments of vulnerable areas su
9、ch as around electrical conduits, plumbing pipes that penetrate the slab, and the shoulder portions of the barrier and with pressure treated lumber to provide maximum protection to the structure.SECTION 31 31 16.20 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without li
10、cense from IHS-,-,-*NOTE: TO DOWNLOAD UFGS GRAPHICSGo to http:/www.wbdg.org/ccb/NAVGRAPH/graphtoc.pdf.*PART 1 GENERAL1.1 REFERENCES*NOTE: This paragraph is used to list the publications cited in the text of the guide specification. The publications are referred to in the text by basic designation on
11、ly 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 automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference f
12、eature 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 process.*The publications listed below form a part of this specification to the extent referenced
13、. The publications are referred to within the text by the basic designation only.ASTM INTERNATIONAL (ASTM)ASTM C 128 (2004a) Density, Relative Density (Specific Gravity), and Absorption of Fine AggregateASTM C 131 (2003) Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact
14、 in the Los Angeles MachineASTM C 136 (2005) Sieve Analysis of Fine and Coarse AggregatesASTM C 28/C 28M9 (1994) Potential Alkali-Silica Reactivity of Aggregates (Chemical Method)1.2 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the
15、following list to reflect only the submittals SECTION 31 31 16.20 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-required for the project. Submittals should be kept to the minimum required for adequate quality control.A “G” following a submitt
16、al 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 sufficiently impor
17、tant 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 Management Sys
18、tem (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 following the “G“ typically are not used for Navy, Air Force, and NASA projects
19、.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 submittals with a “G“ designation; submittals not having a “G“ designation are for Contractor Quality Control approval.for information on
20、ly. 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 accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-06 Test ReportsBasalt Sand1.3 STORAGE AND HANDLINGStore and handle the mate
21、rial so as to prevent contamination by dirt, water, and organic material.PART 2 PRODUCTS2.1 BASALT SANDClean, dry sand material manufactured from crushed basalt rock meeting the following requirements.a. Material gradation, ASTM C 136.Sieve PercentSize Passing4.75 mm 100SECTION 31 31 16.20 Page 4Pro
22、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Sieve PercentSize Passing2.36 mm 95 - 1002.00 mm 75 - 951.70 mm 35 - 501.18 mm 0 - 10Sieve PercentSize PassingNo. 4 100No. 8 95 - 100No. 10 75 - 95No. 12 35 - 50No. 16 0 - 10b. Specific gravity, ASTM C 128
23、, 2.80.c. Silica (S102) content, ASTM C 28/C 28M9, 45 percent.d. Abrasion loss, after 500 revolutions, 20 percent, when tested in accordance with ASTM C 131.PART 3 EXECUTION3.1 PREPARATIONPrior to placing material, remove visible plant roots and standing water from the excavated area. Inspect utilit
24、y trenches to ensure they are sufficiently wide to permit adequate cover under, around, and over pipes and conduit that will be encapsulated with the basaltic termite barrier (BTB). Also inspect the foundation perimeter to ensure that there is sufficient room between the sides of excavations and edg
25、es of foundations to provide the required barrier depth and width.3.2 PLACEMENTa. General. Place material in one lift for thicknesses of 150 mm 6 inches or less and in succesive lifts of 100 to 150 mm 4 to 6 inches where the indicated thickness is greater than 150 mm 6 inches. Compact each lift prio
26、r to placing successive lifts. Use power driven, vibrating-plate type tampers for large areas and rod-and-plate type hand tampers for small areas such as utility trenches and foundation and walk edges.3.2.1 Slab-on-Grade*NOTE: Show the required depths on the drawings. 100 mm Four inch depth is the m
27、inimum required. For areas where capillary action is a problem, consult a soils engineer if the depth should be increased or other capillary prevention measures are required.*Provide a barrier of the depth indicated. Rake smooth and machine tamp, giving at least three passes over the entire area. Ha
28、nd tamp around pipe and conduit risers.SECTION 31 31 16.20 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.1.1 Utility TrenchesPlace the required depth of material for bedding in trenches prior to placing pipes and conduits. Hand tamp. For
29、pipes 75 mm 3 inchesand larger in diameter: After placing pipe, bring material up to the top of the pipe and carefully hand tamp the material. Then, bring material up to the top of the trench and tamp. For pipes smaller than 75 mm 3 inches in diameter and for conduit: Bring material up to the top of
30、 the trench and tamp.3.2.1.2 EdgesAfter concrete placement and form removal, remove dirt, loose concrete, and other debris and hand place and tamp additional material to existing grade.3.2.2 CMU Block WallsPlace the material in ungrouted cells at a height of at least one course above grade of the wa
31、ll.3.2.3 Fence Posts and Utility Polesa. Line the designated hole with a geotextile or similar material before proceeding with the work.b. Once the geotextile is in place, put a 100 to 150 mm 4 to 6 inch layer of the BTB at the bottom of the hole. Hand tamp. After positioning the fence post or utili
32、ty pole in the middle of the hole, fill around the sides, compacting the material after successive lifts of 150 to 300 mm 6 to 12 inches until the hole is completely filled. Ensure that a 100 to 150 mm 4 to 6 inch BTB barrier exists around the perimeter of the post or pole.3.2.4 Retaining WallsPlace
33、 the required amount of material below the footing and up to the grade level of the wall. Place lifts of 100 to 150 mm 4 to 6 inches with compaction of each lift prior to placing successive lifts.- End of Section -SECTION 31 31 16.20 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
