Windy Pfau 2012-085 Final Letter with FRs.pdf
FIELD REPORT
TH
21312 30 Drive SE
Suite 110
HWA Job No. Task # Report No.
Bothell, WA 98021.7010
2012-085-21 100 01
Tel. 425-774-0106
Permit No. Date
Fax. 425-774-2714
February 3, 2014
Project Name Location or Address Day of the Week
Windy Pfau Residence 17330 76 th AVE W, Edmonds, WA Monday
Owner Owner Rep. Weather Temp. (°F)
Windy Pfau Windy Pfau Mostly Sunny 35
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY:
Site Visit: Start Travel: 0815 Arrived at Site: 0845 Departed Site: 1500 End Travel: 1540
___________________________________________________________________________________________________________
MISCELLANEOUS ACTIVITIES, OBSERVATIONS AND/OR COMMENTS:
I visited the Pfau residence to monitor driving of 2-inch diameter pin piles. Upon my arrival at 0845, the
landscape contractor, Mike of Exteriorscapes, was onsite. At 0900, Cela Fortier, project manager for
Exteriorscapes arrived and we discussed the work to be performed. Brad Thurber, of HWA, arrived shortly after
0900 and joined the conversation. The Pile King crew arrived at approximately 1000.
Pile King began driving piles at 1047 at the west end of the deck. Pile designations are as indicated on Figure 1.
Pile materials were 5.2-foot long lengths of 2-inch diameter, Schedule 80, hot-dip galvanized steel pipe. Pre-
fabricated couplers were used to connect sections (Photos 1 & 3). Photo 2 shows the 90-pound jackhammer
driving Pile 2.
Brad Thurber informed me at approximately 1200 that Pile 12 would be constructed as a retrofit to the existing
footing rather than a complete replacement as indicated in the plans, per his discussion with Brian Rittereiser
(structural engineer with Swenson Say Faget) and Bryan Hawkins.
Work was stopped for the day at 1420. Eight piles were driven today under my observation. Refusal criteria of
less than 1 inch of advance per minute of driving was met for each of the eight piles as indicated in Table 1. At
the request of Exteriorscapes, I stayed onsite to meet the City of Edmonds Building Inspector. The building
inspector from the City of Edmonds, Pat Lawler, arrived at 1445. He looked at the work completed today and I
indicated that the piles driven today had been installed satisfactorily.
FR-01 02-03-2014 Page 1 of 6
Project Name Location or Address Report No.
th
Windy Pfau Residence 17330 76 AVE W, Edmonds, WA 01
Owner Owner Rep. Date
Windy Pfau Windy Pfau February 3, 2014
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
Table 1.
Summary of Pin Piles Driven Today.
Pile No. Driven To Refusal Criteria (<1 inch Estimated tip depth relative to top
per minute of driving) of footing (feet)
01 Yes 16
02 Yes 16
03 Yes 17
04 Yes 13
05 Yes 14
06 Yes 15
07 Yes 13
08 Yes 17
________________________________________________________________________________________
SIGNATURES:
Signed:________________________________ Reviewed:_________________________________
HWA Field Representative HWA Reviewer
_________________________________________________________________________________________
Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer
FR-01 02-03-2014 Page 2 of 6
Figure 1.
Deck Plan View with Pin Pile Designations.
FR-01 02-03-2014 Page 3 of 6
Photo 1.
Coupler used to join sections of pin piles.
FR-01 02-03-2014 Page 4 of 6
Photo 2.
Jackhammer Used to Install Pin Piles.
FR-01 02-03-2014 Page 5 of 6
Photo 3.
Adding Pin Pile Section Using Coupler.
FR-01 02-03-2014 Page 6 of 6
FIELD REPORT
TH
21312 30 Drive SE
Suite 110
HWA Job No. Task # Report No.
Bothell, WA 98021.7010
2012-085-21 100 02
Tel. 425-774-0106
Permit No. Date
Fax. 425-774-2714
February 4, 2014
Project Name Location or Address Day of the Week
Windy Pfau Residence 17330 76 th AVE W, Edmonds, WA Tuesday
Owner Owner Rep. Weather Temp. (°F)
Windy Pfau Windy Pfau Mostly Cloudy 35
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY:
Site Visit: Start Travel: 0800 Arrived at Site: 0830 Departed Site: 1600 End Travel: 1645
___________________________________________________________________________________________________________
MISCELLANEOUS ACTIVITIES, OBSERVATIONS AND/OR COMMENTS:
I visited the Pfau residence to monitor driving of 2-inch diameter pin piles and Manta Ray soil anchors. Upon
my arrival at 0830, Exteriorscapes and Pile King crews were onsite.
Pile King began driving pin piles at 0830, beginning with Pile 9. Pin pile designations are as indicated on
Figure 1.
Pin pile materials were 5.2-foot long lengths of 2-inch diameter, Schedule 80, hot-dip galvanized steel pipe.
Pile 12 was driven with a 1H:3V batter to avoid buried utilities, with the batter sloping to the north, e.g. angled
down into the slope.
Work was stopped at 0945 upon completion of pin pile installation. Four piles were driven today under my
observation. Refusal criteria of less than 1 inch of advance per minute of driving was met for each of the four
piles as indicated in Table 1.
Table 1.
Summary of Pin Piles Driven Today.
Pile No. Driven To Refusal Criteria (<1 inch Estimated tip depth relative to top
per minute of driving) of timber retaining wall (feet)
09 Yes 9
10 Yes 9
11 Yes 7
12 Yes 6
A total of seven Manta Ray anchors were installed under my observation today. These anchors are intended to
provide lateral capacity to the pile-supported footings. Manta Ray soil anchors were assembled with 10 foot
long sections of 5/8-inch diameter, galvanized, all-thread rod connected to Manta Ray model MR-4 or model
MR-3 anchors (Photos 1 & 2). Driving started at 0845 with a 60-pound jackhammer (Photo 3). When
necessary, sections of threaded rod were coupled together using a threaded coupler (Photo 4). Work progressed
in the general sequence of driving one lateral anchor being followed by setting the anchor with tension on the
threaded rod using a hydraulic jack (Photo 5), then moving on to the next anchor. Installation details for each
anchor are summarized in Table 2.
FR-02 02-04-2014 Page 1 of 8
Project Name Location or Address Report No.
th
Windy Pfau Residence 17330 76 AVE W, Edmonds, WA 02
Owner Owner Rep. Date
Windy Pfau Windy Pfau February 4, 2014
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
Table 2.
Summary of Manta Ray Anchors Driven Today.
Anchor Location Anchor Model Angle below Approximate Depth Constant Applied
Horizontal(feet)Load for Continuous
Displacement (lbs)
2500 lb Min.
π
West Side of Pile 2 MR-4 9 4500
10
π
East Side of Pile 3 MR-4 10 3600
10
π
East Side of Pile 6 MR-3 8 2000
10
π
Between Piles 5 & 6 MR-4 8 3000
15
π
West Side of Pile 5 MR-4 9 3000
10
π
West Side of Pile 4 MR-4 11 4500
10
π
East Side of Pile 4 MR-4 7 3000
10
Six of the seven anchors provided greater than the minimum allowable capacity. The Manta Ray anchor driven
on the east side of Pile 6 did not provide the minimum allowable capacity. An additional anchor was driven
between Piles 5 and 6 to provide additional capacity. It is our understanding that, due to their close proximity,
Piles 5 and 6 will be cast into the same cap to retrofit the existing footings. Cast into a common cap, Piles 5 and
6 will develop lateral capacity from two lateral anchors with capacity verified greater than minimum allowable
and from the underperforming anchor.
Work was stopped for the day at 1600 and is to resume tomorrow at 0730.
________________________________________________________________________________________
SIGNATURES:
Signed:________________________________ Reviewed:_________________________________
HWA Field Representative HWA Reviewer
_________________________________________________________________________________________
Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer
FR-02 02-04-2014 Page 2 of 8
Figure 1.
Deck Plan View with Pin Pile Designations.
FR-02 02-04-2014 Page 3 of 8
Photo 1.
Manta Ray MR-4 (top) and MR-3 (bottom).
FR-02 02-04-2014 Page 4 of 8
Photo 2.
Manta Ray anchor ready for driving.
FR-02 02-04-2014 Page 5 of 8
Photo 3.
Pile King crew driving Manta Ray anchor.
FR-02 02-04-2014 Page 6 of 8
Photo 4.
Sections of threaded tension rod coupled together.
FR-02 02-04-2014 Page 7 of 8
Photo 5.
Hydraulic ram setting the ground anchor.
FR-02 02-04-2014 Page 8 of 8
FIELD REPORT
TH
21312 30 Drive SE
Suite 110
HWA Job No. Task # Report No.
Bothell, WA 98021.7010
2012-085-21 100 03
Tel. 425-774-0106
Permit No. Date
Fax. 425-774-2714
February 5, 2014
Project Name Location or Address Day of the Week
Windy Pfau Residence 17330 76 th AVE W, Edmonds, WA Wednesday
Owner Owner Rep. Weather Temp. (°F)
Windy Pfau Windy Pfau Mostly Sunny 25
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY:
Site Visit: Start Travel: 0700 Arrived at Site: 0730 Departed Site: 1100 End Travel: 1130
___________________________________________________________________________________________________________
MISCELLANEOUS ACTIVITIES, OBSERVATIONS AND/OR COMMENTS:
I visited the Pfau residence to monitor driving of Manta Ray soil anchors. Upon my arrival at 0730, neither
Exteriorscapes nor Pile King was onsite. At 0830 the Pile King crew had all arrived onsite and work began.
Pile designations are as indicated on Figure 1.
Manta Ray model MR-4 lateral soil anchors were assembled with 10 foot long sections of 5/8-inch diameter,
galvanized, all-thread rod. Driving started at 0845 with a 60-pound jackhammer. Work progressed in the
general sequence of driving one lateral anchor being followed by setting the anchor with tension on the threaded
rod using a hydraulic jack, then moving on to the next anchor. Three anchors were installed under my
observation today for a total of ten installed on the project to date. A summary of details regarding lateral soil
anchor installation is presented in Table 1.
Table 1.
Summary of Manta Ray Anchors Driven Today.
Anchor Location Anchor Model Angle below Approximate Depth Constant Applied
Horizontal(feet)Load for Continuous
Displacement (lbs)
2500 lb Min.
π
East Side of Pile 1 MR-4 11 4000
18
π
West Side of Pile 7 MR-4 10 3000
5
π
East Side of Pile 7 MR-4 10 3000
5
The Pile King crew stopped work stopped for the day at 1045. Matt McDowell of Pile King indicated that
installation of ground anchors would not resume until after removal of the large boulder next to Pier 1 and the
timber retaining wall below Piles 8 through 11.
________________________________________________________________________________________
FR-03 02-05-2014 Page 1 of 3
Project Name Location or Address Report No.
th
Windy Pfau Residence 17330 76 AVE W, Edmonds, WA 03
Owner Owner Rep. Date
Windy Pfau Windy Pfau February 5, 2014
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
SIGNATURES:
Signed:________________________________ Reviewed:_________________________________
HWA Field Representative HWA Reviewer
_________________________________________________________________________________________
Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer
FR-03 02-05-2014 Page 2 of 3
Figure 1.
Deck Plan View with Pin Pile Designations.
FR-03 02-05-2014 Page 3 of 3
FIELD REPORT
TH
21312 30 Drive SE
Suite 110
HWA Job No. Task # Report No.
Bothell, WA 98021.7010
2012-085-21 100 04
Tel. 425-774-0106
Permit No. Date
Fax. 425-774-2714
February 7, 2014
Project Name Location or Address Day of the Week
Windy Pfau Residence 17330 76 th AVE W, Edmonds, WA Friday
Owner Owner Rep. Weather Temp. (°F)
Windy Pfau Windy Pfau Partly Cloudy 30
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY:
Site Visit: Start Travel: 0730 Arrived at Site: 0755 Departed Site: 1230 End Travel: 1300
___________________________________________________________________________________________________________
MISCELLANEOUS ACTIVITIES, OBSERVATIONS AND/OR COMMENTS:
I visited the Pfau residence to monitor driving of Manta Ray soil anchors. Upon my arrival at 0755, John of
Exteriorscapes was onsite.
The Pile King crew arrived at 0815. At 0830, Matt McDowell of Pile King told me that the battery in the air
compressor was dead so the compressor would not start. Pile King got the compressor started at 0910 and began
driving Manta Ray anchors at 0915, beginning with one centered over Pile 8. Pin pile designations are as
indicated on Figure 1.
A total of six Manta Ray anchors were installed under my observation today. These anchors are intended to
provide lateral capacity to the pile-supported footings. Manta Ray soil anchors were assembled with 10-foot
long sections of 5/8-inch diameter, galvanized, all-thread rod connected to Manta Ray model MR-4 anchors.
Anchors were driven with a 60-pound jackhammer. When necessary, sections of threaded rod were coupled
together using a threaded coupler. Work progressed in the general sequence of driving one lateral anchor,
followed by setting the anchor with tension on the threaded rod using a hydraulic jack, then moving on to the
next anchor. Installation details for each anchor are summarized in Table 1.
Table 1.
Summary of Manta Ray Anchors Driven Today.
Anchor Location Anchor Model Angle below Approximate Depth Constant Applied
Horizontal(feet)Load for Continuous
Displacement (lbs)
2500 lb Min.
π
Centered over Pile 8 MR-4 5.25 3000
23
π
Centered over Pile 9 MR-4 4.6 2700
9
π
Centered over Pile MR-44.7 2700
8
10
π
Centered over Pile MR-48.5 2600
9
11
π
Centered over Pile MR-410 4000
11
12
π
West Side of Pile 1 MR-4 9 3000
10
FR-04 02-07-2014 Page 1 of 14
Project Name Location or Address Report No.
th
Windy Pfau Residence 17330 76 AVE W, Edmonds, WA 04
Owner Owner Rep. Date
Windy Pfau Windy Pfau February 7, 2014
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
McDowell Pile King Matt McDowell Tori Hesedahl
Photo 1 shows a view of Pier 1 looking down. The ruler indicates the downslope direction. The east lateral
π
anchor is skewed from the downslope direction approximately 25 while the west anchor is skewed in the east
π
direction approximately 30. Angles were estimated by bearing using a compass and by using a ruler and tape
π
measure to measure the legs of a right triangle. Based on the limit on skew of 30 (per the structural engineer in
an email sent February 7, 2014) and the near symmetry we believe this anchor meets the design requirements.
The Pile King crew completed work at 1220. Photos 2 through 11 show Piers 1 through 12 upon completion of
work by Pile King.
________________________________________________________________________________________
SIGNATURES:
Signed:________________________________ Reviewed:_________________________________
HWA Field Representative HWA Reviewer
_________________________________________________________________________________________
Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer
FR-04 02-07-2014 Page 2 of 14
Figure 1.
Deck Plan View with Pin Pile Designations.
FR-04 02-07-2014 Page 3 of 14
ππ
25 30
Photo 1.
Pier 1 top view showing skew of lateral anchors to direction of slope.
FR-04 02-07-2014 Page 4 of 14
Photo 2.
Pier 1.
FR-04 02-07-2014 Page 5 of 14
Photo 3.
Piers 2 & 3.
FR-04 02-07-2014 Page 6 of 14
Photo 4.
Pier 4.
FR-04 02-07-2014 Page 7 of 14
MR-88 Test
Anchor
Underperforming
MR-4 Anchor
Additional
MR-4 Anchor
MR-4 Test
Anchor
Photo 5.
Piers 5 & 6.
FR-04 02-07-2014 Page 8 of 14
Photo 6.
Pier 7.
FR-04 02-07-2014 Page 9 of 14
Photo 7.
Pier 8.
FR-04 02-07-2014 Page 10 of 14
Photo 8.
Pier 9
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Photo 9.
Pier 10.
FR-04 02-07-2014 Page 12 of 14
Photo 10.
Pier 11.
FR-04 02-07-2014 Page 13 of 14
Photo 11.
Pier 12.
FR-04 02-07-2014 Page 14 of 14
FIELD REPORT
TH
21312 30 Drive SE
Suite 110
HWA Job No. Task # Report No.
Bothell, WA 98021.7010
2012-085-21 100 05
Tel. 425-774-0106
Permit No. Date
Fax. 425-774-2714
March 12, 2014
Project Name Location or Address Day of the Week
Windy Pfau Residence 17330 76 th AVE W, Edmonds, WA Wednesday
Owner Owner Rep. Weather Temp. (°F)
Windy Pfau Windy Pfau Partly Cloudy Hi 50’s
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
Exteriorscapes LLC John Brad Thurber
SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY:
Site Visit: Start Travel: 1405 Arrived at Site: 1430 Departed Site: 1545 End Travel: 1615
___________________________________________________________________________________________________________
MISCELLANEOUS ACTIVITIES, OBSERVATIONS AND/OR COMMENTS:
I visited the Pfau residence at the Client’s request to observe regrading of the ground beneath the deck. Upon
my arrival at 1430, John (foreman) of Exteriorscapes was onsite with two additional personnel. They were
removing the temporary support beams and posts, which had been placed to support the deck during
underpinning and anchoring.
This work was taking longer than expected, so the regrading had not been undertaken yet. Per our geotechnical
report, regrading should be completed by removing oversteepened soils beneath the eastern, wide portion of the
deck, in particular where soils are oversteepened due to removal of the short timber wall and lower positions of
the new concrete pier caps (see Photo 1). On site today I recommended to John that the excess soil be removed
to intercept the shallow slope approximately 2 to 3 feet from the uphill, northern edge of the deck. It appeared
that approximately 2 to 3 cubic yards will need to be removed.
Also, spoils from digging for piers / pile caps along the walkway portion of the deck need to be removed.
FR-05 03-12-2014 Page 1 of 2
Project Name Location or Address Report No.
th
Windy Pfau Residence 17330 76 AVE W, Edmonds, WA 05
Owner Owner Rep. Date
Windy Pfau Windy Pfau March 12, 2014
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
Exteriorscapes LLC John Brad Thurber
Photo 1.
Removal of temporary supports. Timber wall has been partially removed.
________________________________________________________________________________________
SIGNATURES:
Signed:________________________________ Reviewed:_________________________________
HWA Field Representative HWA Reviewer
_________________________________________________________________________________________
Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer.
FR-05 03-12-2014 Page 2 of 2
FIELD REPORT
TH
21312 30 Drive SE
Suite 110
HWA Job No. Task # Report No.
Bothell, WA 98021.7010
2012-085-21 100 06
Tel. 425-774-0106
Permit No. Date
Fax. 425-774-2714
March 18, 2014
Project Name Location or Address Day of the Week
Windy Pfau Residence 17330 76 th AVE W, Edmonds, WA Tuesday
Owner Owner Rep. Weather Temp. (°F)
Windy Pfau Windy Pfau Sunny Hi 50’s
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
Exteriorscapes LLC John Brad Thurber
SUMMARY OF FIELD TIME SPENT ON PROJECT TODAY:
Site Visit: Start Travel: 1405 Arrived at Site: 1430 Departed Site: 1520 End Travel: 1545
___________________________________________________________________________________________________________
MISCELLANEOUS ACTIVITIES, OBSERVATIONS AND/OR COMMENTS:
I visited the Pfau residence at the Client’s request to observe regrading of the ground beneath the deck. The
regrading had been completed beneath all areas of the deck where needed, in the form of sloping back
oversteepened areas beneath the main, wide portion of the deck, and removal of spoils from digging for pier
caps beneath the walkway portion of the deck. Jute netting had been placed and staked over the soil exposed by
regrading. John with Exteriorscapes said they had removed approximately 3 cubic yards (via 5-gallon buckets).
I recommended further removal of 3 or 4 buckets worth to round the crest of the 1:1 regraded slope beneath the
deck (see Photo 1). John said they would do so, and add more staples to the jute netting thereafter as they had
run out. The final inspection of permanent erosion control measures will be performed by City of Edmonds.
Photo 1
. Regraded slope beneath deck with jute netting.
FR-06 03-18-2014 Page 1 of 2
Project Name Location or Address Report No.
th
Windy Pfau Residence 17330 76 AVE W, Edmonds, WA 06
Owner Owner Rep. Date
Windy Pfau Windy Pfau March 18, 2014
Client Client Rep. HWA Project Engineer
Exteriorscapes LLC Marin Bjork Bryan Hawkins
Contractor Contractor Rep. HWA Field Rep.
Exteriorscapes LLC John Brad Thurber
________________________________________________________________________________________
SIGNATURES:
Signed:________________________________ Reviewed:_________________________________
HWA Field Representative HWA Reviewer
_________________________________________________________________________________________
Note: Field Reports are preliminary until signed by both the HWA Field Representative and HWA Reviewer.
FR-06 03-18-2014 Page 2 of 2