HomeMy WebLinkAbout420 Linden St - Special Inspections/Blower Door Test - 01/12/2015ile
CONSULTING &
ENGINEERING
January 12, 2015
Jeff Jensen
Jensen Consulting
226 Remington, Suite #3
Fort Collins, CO 80524
Project Name: Block One
Pie Project Number: C0114163.00 (040)
Location: Fort Collins, Colorado
Subject: Air Barrier Performance Testing Report
Dear Mr. Jensen:
In accordance with our agreement, Pie Consulting & Engineering (Pie) has conducted
performance testing of the air barrier system for the Block One project located in Fort Collins,
Colorado. The purpose of this performance evaluation was to provide Jensen Consulting an air
tightness performance value of the as -constructed air barrier of the building.
This report provides The City of Fort Collins Certification of Compliance, a summary of the air
barrier test procedure, and results of our performance testing. The purpose of the performance
testing was to quantify the amount of air leakage occurring through the air barrier test
envelope.
The testing was performed on January 8, 2015 by Troy Rodvold of Pie.
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Alr Barrier Performance Testing Report Block One — Fort Collins, Colorado
CITY OF FORT COLLINS CERTIFICATE OF COMPLIANCE
Building Air Leakage Test Results
Praec»ri 7nf4 nn
Metric
Requirement
Actual
Requirement Met/Not Met
n
0.45 < n < 0.8
0.6967
Met
CP
N/A
599.9
N/A
r2
r2> 0.98
0.998
Met
CFM75/sq ft
Actual < 0.25 CFM 75/sq ft
0.2626
Not Met
95% C.I. Upper
N/A
0.2637
N/A
95% C.I. Lower
N/A
0.2616
N/A
E LA75
N/A
9.3
N/A
nPnraccuri7atinn
Metric
Requirement
Actual
Requirement Met/Not Met
n
0.45 < n < 0.8
0.6918
Met
Cd
N/A
546.7
N/A
r2
r2 > 0.98
0.996
Met
CFM75/sq ft
Actual < 0.25 CFM 75/sq ft
0.2343
Met
95% C.I. Upper
N/A
0.2353
N/A
95% C.I. Lower
N/A
0.2332
N/A
E LA75
N/A
8.3
N/A
AvPra O P
Metric
I Requirement
Actual
Requirement Met/Not Met
CFM75/sq ft I
Actual < 0.25 CFM 75/sq ft
10.248
Met
1
The test boundary area was obtained from the Architect of
Record and was checked on -site for reasonableness.
TR Initial
2
Set up was performed according to section 2 of the test form and
all deviations and their impact noted here.
_TR _Initial
3
Test equipment used was in compliance with respect to accuracy
and calibration date.
TR _Initial
4
The test procedure used was in compliance except as noted here.
TR _Initial
5
The calculations were done in strict accordance with ASTM
E779-10 except as noted in this Protocol.
TR _Initial
6
Provide the value calculated in step 5.15 (or 5.11 or 5.4, if
applicable).
0.248 CFM75/sq ft
7
Determine pass/fail status based on the average of
pressurization and depressurization.
Pass
Pie Consulting & Engineering Page 2 of 8 C0114163.00 (040)
Air Barrier Performance Testinq Report Block One — Fort Collins, Colorado
8
All accuracies, pressure limits, and data correlations and
confidence intervals are within the bounds specified in steps 3, 4,
and 5 and all deviations are noted here.
TR _Initial
9
Supporting documentation described in steps 1, 3, 6, and 7 is
attached to this test form, including all digital photographs of the
building and test procedure.
TR Initial
I hereby certify that the results above are in conformance with the City of Fort Collins Air
Leakage Test Protocol.
Testing agency name:
Pie Consulting and Engineering
Testing agency authorized representative signature:
Testing agency authorized representative printed name:
Troy Rodvold
Date: January 12, 2015
BACKGROUND
On March 22, 2011, the City of Fort Collins adopted Ordinance No. 031, 2011 amending Chapter
5, Article II, Division 2 of the Code of the City of Fort Collins for the purpose of amending the
2009 International Energy Conservation Code (Ordinance). This ordinance requires (among
other measures) that all new buildings, additions, and those undergoing major renovations
shall have an air leakage rate that does not exceed 0.25 CFM75/sq ft of the total building
envelope area when tested in accordance with the City of Fort Collins Air Leakage Test Protocol
for Non- Residential Building Enclosures (Protocol).
This Directive references ASTM E 779-03, Standard Test Method for Determining Air Leakage Rate
by Fan Pressurization, as well as ASTM E 1827, Standard Test Methods for Determining Airtightness
of Buildings Using an Orifice Blower Door.
Pie Consulting & Engineering Page 3 of 8 C0114163.00 (040)
Air Barrier Performance
LA1_0 1:.�,. S �-.
Block One — Fort Collins, Colorado
EXECUTIVE SUMMARY
A. On January 8, 2015, Pie conducted the building performance testing of the Block One
project, Located in Fort Collins, Colorado, to determine the current air tightness value
for the building. Testing was conducted in general accordance with the City of Fort
Collins Building Air Leakage Test Protocol, which references ASTM E 779, using
controlled pressurization and depressurization techniques.
B. The building was tested with the air barrier test envelope in the "closed" condition,
where applicable, as listed in Table 1 of ASTM E 1827-96 (2002) Standard Test Methods for
Determining Air Tightness of Buildings Using an Orifice Blower Door. The normalized
results of air tightness testing of the Large Office area are listed in Figure 1.
Upper Limit
Percent above Max
Air Leakage
Air Leakage
Allowable
(CFM/ft2 at
(CFM/ft2 at 75-
(0.25 CFM/ft2 at 75-Pa)
Description
75-Pa)
Pa)
OR PASS
Pressurization
0.26
0.263
5-Percent
Depressurization
0.23
0.235
PASS
Average
0.25
N/A
PASS
Figure 1- Air Tightness Testing Results
C. The building passed the City of Fort Collins air tightness requirement (0.25 CFM/ft2 at
75-Pa). As a result, post -testing diagnostic evaluation of the building air leakage was not
required and was not performed. (Diagnostic evaluation was performed prior to and
during preliminary testing to assist in bringing the air leakage rate down to allowable
limits.)
BUILDING DESCRIPTION
A. The subject building is a 4-story multi -use building. The overall footprint of the
building is roughly "rectangle" -shaped with a mean roof height of approximately 50-
feet.
1. Exterior walls consisted of stone, brick and fiber cement panels over Spray
Polyurethane Foam over exterior grade gypsum sheatlung and plywood over
wood and metal framing.
2. Windows consisted of aluminum framed storefront systems and aluminum clad
wood. Doors were aluminum framed, hollow metal and aluminum clad wood.
3. The roof systems consisted of a standing seam metal over a self -adhering
underlayment over rigid insulation on metal deck, a fully adhered Thermoplastic
Pie Consulting & Engineering Page 4 of 8 C0114163.00 (040)