1. Issues

Anecdotal information indicates that corrosion of fasteners has been observed across a range of installations
The problem is more serious in coastal environments due to presence of chloride ions
Increased manufacturing of these products outside the United State may be contributing to the problem
The 2013-2014 survey study of roofing contractors regarding their observation of roof fastener corrosion corroborated each of the above three issues
The 2013-2014 survey study report recommended a follow up fastener corrosion test program to isolate the primary causes and provide evidence to support the pursuit of code changes
It is not known whether the process of installation negatively affects the corrosion resistance of fasteners

2. Relevant Sections of the Code (and Related Documents)

1622.1.2, Florida Building Code—Building
1506.4 – 1506.7, Florida Building Code—Building
1517.5.1 – 1517.5.2, Florida Building Code—Building
Guide to Aluminum Construction in High Wind Areas
TAS 114 Appendix E
ASTM A 90
ASTM A 641
ASTM B117-11
ASTM G85-11

3. Statement of Work

Conduct a limited field study of installed fasteners in both coastal and inland regions of Florida to quantify the severity of corrosion on fasteners
Purchase Cyclic Corrosion Testing equipment (Q-Lab Corporation)
Evaluate the degree of corrosion resistance for screen enclosure fasteners embedded in aluminum and concrete substrates. Withdrawal tests will be performed to evaluate the change in mechanical resistance. New, installed, and installed/removed fasteners will be evaluated
Apply TAS 114 Appendix E testing (Section 2.6.1) to evaluate the relative degree of corrosion resistance for a random sample of US and non-US manufactured ASTM A 641 Class 1 fasteners. Testing will be conducted on both new and installed/removed fasteners to determine the influence of installation on corrosion resistance
Repeat the above TAS 114 testing on ASTM A 641 Class 2 fasteners as a means of determining whether a thicker zinc coating will provide better corrosion resistance
Interpret results, determine if additional Code changes are necessary, and produce a report that explains the results and implications for the Code

4. Budget

Travel costs are included for the field study and may vary from this estimate depending on the locations and extent of the study:

Travel

1. Fuel for field study transportation. Assuming 6 (2-day, 1-night) trips originating from Gainesville to other Florida locations, 400 miles round trip, cost of diesel is $4.25/gallon, 8 miles/gallon = 6 x 400 / 8 x $4.25 = $1,275

2. Per Diem and Shelter:

a. 2 people x 6 days x $46/day per diem = $552

b. 2 people x 6 nights @ $145/night = $870

Total travel budget = $2697

Student salary

200 hours of student time are dedicated to the aluminum screen enclosure fastener corrosion testing. 300 hours of student time are dedicated to the field study roofing system fastener corrosion testing.

Materials and Supplies

This includes acquisition of fasteners for testing, supplies needed to conduct the corrosion testing, and supplies needed for the field study.

Table 1. Budget

Budget	Amount
Salaries	$23,902
Fringe Benefits	$5,605
Equipment	$40,096
Utilities	$0
Travel	$2,697
Misc. (M&S, Tuition)	$5,000
Indirect Cost/Overhead	$7,730
TOTAL	$85,030

Research personnel time and will be reported and certified using a “loaded” rate computed from the following table. Note that the indirect cost shown in Table 1 is computed from the indirect cost in Table 2 + the indirect cost associated with the travel and miscellaneous categories.

Table 2. Breakdown of the hourly compensation rate

Person	Hours	Hourly Rate	Fringe	Tuition	IDC	Total
F. Masters	80	$73.18	$20	$0.00	$9	$8,231
D. Prevatt	0	$63.47	$18	$0.00	$8	$0
K. Gurley	120	$65.93	$18	$0.00	$8	$11,122
Lab Staff*	160	$29.19	$9	$0.00	$4	$6,770
Admin Asst	20	$23.30	$11	$0.00	$3	$746
Grad. Students	0	$21.00	$3	$10.90	$2	$0
Undergrad. Students	500	$10.00	$0	$0.00	$1	$5,588
*Multiple lab staff may be used. Maximum anticipated hourly rate shown

The personnel time in Table 2 reflects the estimated time commitment to this deliverable, however the UF professors (Gurley, Masters, Prevatt) work in a team. These hours may be used to support other projects supported by the sponsor during 2014-2015.

5. Deliverables

· A report providing technical information on the problem background, results and implications to the Code submitted to the Program Manager by June 15, 2015

· A breakdown of the number of hours or partial hours, in increments of fifteen (15) minutes, of work performed and a brief description of the work performed. The Contractor agrees to provide any additional documentation requested by the Department to satisfy audit requirements.

6. Appendix: Quote for CRH1100-HSC Cyclic Corrosion Tester