TESTING APPLICATION STANDARD (TAS) 117(C)-95 TEST ...

Scope:1.

1.1 This protocol covers determination of thedynamic pull-off performance of roofingfastener heads or fasteners with bearingplates.

1.2 This protocol is applicable to both metaland plastic bearing plates. Metal bearingplates shall also be tested for dynamicpull-through resistance with roofingmembranes in compliance with TAS117(B).

1.3 The test procedures outlined herein utilizea dynamic eccentric loading procedure.

1.4 All testing and calculations shall be con-ducted by a certified testing agency andall test reports, including calculations,shall be signed and sealed by a RegisteredDesign Professional per F.S., Section 471or 481.

Referenced Documents:2.

2.1 The Florida Building Code, Building

2.2 Application Standards:

TAS 117(B) Test Procedure for Dy-namic Pull-Through Perfor-mance of RoofingMembranes Over FastenerHeads or Fasteners withMetal Bearing Plates

2.3 Norwegian Building Research Institute:Roofing Systems with Mechanical At-tachments

2.4 ASTM Standards:

D 1079 Standard Definitions andTerms Relating to Roofing,Waterproofing and Bitumi-nous Materials

E 380 Excerpts from the StandardPractice for Use of the Inter-national System of Units(SI) (the Modernized Met-ric System)

Terminology & Units:3.

3.1 Definitions–For definitions of terms inthis Protocol, refer to Chapter 2 and Sec-tion 1513 of the Florida Building Code,Building and ASTM D 1079. The defini-tions from the Florida Building Code,Building shall take precedence.

3.1.1 All references to “bearing plate”are interchangeable with “stressplate.”

3.1.2 The dynamic pull-off value underdynamic eccentric loading shallbe defined as the mean load capac-ity obtained at failure. Failureshall be defined as any of the fol-lowing:

• breakage of the stress plate;

• pull through of the fastenerhead in the stress plate; or,

• permanent deformation of thefastener, fastener head orstress plate in excess of 1/4

inch (6.3 mm).

3.2 Units—For conversion of U.S. customaryunits to SI units, refer to ASTM E 380.

Significance and Use:4.

4.1 The test procedure provides a means ofdetermining of the dynamic pull-off per-formance of roofing fastener assemblieswhen exposed to dynamic eccentric load-ing.

4.2 The test procedure is acceptable for alltypes of fasteners with integral bearingplates and fasteners with separate bearingplates.

Note: Roofing nails or cap nails are not approvedfor use within the high-velocity hurricanezone jurisdiction. therefore, results fromtesting these nail types shall not be utilizedas design values for projects within this ju-risdiction. In addition, the minimum andmaximum bearing plate diameters for an-chor or base sheet attachment within thehigh-velocity hurricane zone jurisdiction

2010 FLORIDA BUILDING CODE — TEST PROTOCOLS HVHZ (TAS) 117(C)-95.1

TESTING APPLICATION STANDARD (TAS) 117(C)-95

TEST PROCEDURE FOR DYNAMIC PULL-OFF PERFORMANCEOF ROOFING FASTENER HEADS OR FASTENERS WITH BEARING PLATES

are 15/8 inches (41 mm) and 2 inches (51mm), respectively. Therefore, results fromtesting bearing plates having a diameterless than 15/8 inches (41 mm) or greaterthan 2 inches (51 mm) shall not be utilizedas design values for projects within this ju-risdiction.

Sampling:5.

5.1 Fastener and/or bearing plate samplesshall be provided directly from the re-spective manufacturer and shall be testedas delivered. Unless otherwise specified,14 samples shall be tested for each vari-able in the test specimen (i.e. different fas-tener or different bearing plate).

Test Method:6.

6.1 General:

6.1.1 The dynamic pull-off value is de-termined by subjecting the testspecimen to a dynamic eccentricloading.

6.2 Apparatus

6.2.1 The test apparatus is shown in Fig-ures 1, 4 and 5, attached.

6.2.2 A wire reinforced test strap (SeeFigures 2 and 3, attached). Thetest strap shall consist of a 0.08inch (2 mm) diameter steel wirewelded between two plys of 0.05inch (1.2 mm) PVC membrane re-inforced with polyester fabric. Atthe point of contact in the wireloop, an additional ply of mem-brane shall be wrapped around thewire to avoid cutting action on thefastener.

6.2.3 Attachment cables having varyinglengths for various drop heights.

6.2.4 Drop weights having a mass of 5pounds (2.3 kg).

6.2.5 A device to measure, referenceand mark the height of drop.

6.3 Preparation of test samples:

6.3.1 The fasteners shall not be pre-pared in any way; however, careshall be taken to insure that fasten-

ers are mounted in the test speci-men in a defined, consistent man-ner.

6.3.2 The fastener assembly sampleshall be installed through the cen-ter of the test apparatus as shownin Figure 1, attached.

6.3.3 Dynamic pull-through testingshall be conducted in a room withcontrolled temperature and hu-midity, 73°F (23 ± 2°C) and RH 50percent.

6.4 Procedure:

6.4.1 The fastener assembly test speci-men shall be mounted in the testapparatus to insure no fastenerwithdrawal will occur upon load-ing.

6.4.2 The dynamic load shall be appliedas follows:

• Fixed drop height:The fastener assembly shallbe subjected to a dynamic im-pact load with the drop weightbeing released from a fixeddrop height to the nearest 1inch.

• Intervals of increasing dropheights:The fastener assembly shallbe subjected to dynamic im-pact loads of increasing inten-sity with the drop weightbeing released from increas-ing drop heights at intervals of3 inches (100 mm) until fail-ure occurs.

Application of a dynamic impactload from a fixed drop height shallonly be considered if the fastenerassembly has previously beentested and the intent is to upgradethe fastener assembly pull-offvalue. The datum point of dropheight shall then be the previoustest result.

6.5 Interpretation of results:

6.5.1 Table 1 below lists the corre-sponding fastener assembly

(TAS) 117(C)-95.2 2010 FLORIDA BUILDING CODE — TEST PROTOCOLS HVHZ

(TAS) No. 117(C)-95

pull-off values which relate to re-spective drop heights. These val-ues shall be recorded uponcompletion of testing and shall bestatistically analyzed, as noted inSection 6.6, herein.

TABLE 1FASTENER ASSEMBLY PULL-OFF VALUES

VS. DROP HEIGHT

Drop Height (ft) Pull-Off Value (lbf)

456789

1011121314

2025303540455055606570

For SI: 1 foot = 304.8 mm.

6.6 Statistical analysis of results:

6.6.1 Eliminate the “high” and “low”values recorded during the dy-namic pull-off testing and calcu-late a mean and a standarddeviation from the remaining 12recorded values using the follow-ing equations.

F Fii

==∑1

12

12

1

where,( )S F FF ii

= −=∑1

11

212

1

F = mean load;

SF = standard deviation;

F = record load; and,

i = test number

6.6.2 Determine the percent deviationfrom the mean (S’F) using the fol-lowing equation.

′ = ⎛⎝⎜

⎞⎠⎟

×SS

FF

F 100

If the percent deviation from themean (S F) is greater than 35 per-cent, then the test results shall beconsidered null and void and the

dynamic pull-off performance un-der dynamic eccentric loadingshall be retested.

Report:7.

7.1 The final test report shall include the fol-lowing relevant information:

7.1.1 Name and address of the testinglaboratory.

7.1.2 Identification number of the testreport.

7.1.3 Name and address of the organi-zation or the person who orderedthe test.

7.1.4 Purpose of the test.

7.1.5 Method of sampling and other cir-cumstances (date and person re-sponsible for the sampling).

7.1.6 Name and address of manufac-turer or supplier of the tested ob-ject(s).

7.1.7 Name or other identificationmarks of the tested object(s).

7.1.8 Description of the tested ob-ject(s).

7.1.9 Date of supply of the tested ob-ject(s).

7.1.10 Date of the test.

7.1.11 Test method.

7.1.12 Conditioning of the test speci-mens, environmental data duringthe test (temperature, pressure,RH, etc.).

7.1.13 Identification of the test equip-ment and instruments used.

7.1.14 Any deviations from the testmethod.

7.1.15 Test results and statistical analysiscomputations.

7.1.16 Date and signature.


(TAS) No. 117(C)-95


(TAS) No. 117(C)-95

1. Steel Frame2. 13/4-inch (45 mm) rubber pad3. 2-inch (50 mm) wood plank4. Drop height measurement device5. Drop height reference indicator6. Fastener assembly test specimen7. Test strap8. Steel wire of appropriate length9. Drop weight

For SI: 1 inch = 25.4 mm.

FIGURE 1DIAGRAM OF DYNAMIC PULL-OFF TEST APPARATUS


(TAS) No. 117(C)-95

FIGURE 2DIAGRAM OF WIRE REINFORCED TEST STRAP

FIGURE 3PHOTOGRAPH OF TYPICAL WIRE REINFORCED TEST STRAP


(TAS) No. 117(C)-95

FIGURE 5PHOTOGRAPH OF DYNAMIC PULL-OFF TESTING

FIGURE 4PHOTOGRAPH OF DYNAMIC PULL-OFF TESTING

TESTING APPLICATION STANDARD (TAS) 117(C)-95 TEST ...

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