HomeMy WebLinkAboutEngineer's Installation Observation Letter 07/23/25861-E N Dean Road
Auburn, AL 36830
P: 360.566.7343
Project No.:25.003.ASP
Aspen Foundation Repair
PO Box 1913
Rifle, Colorado 81650
RE: 193 Buds Way, Parachute, Colorado
Permit No.: BLCO-04-25-9191
July 23, 2025
Push Pier Installation
It is our understanding the push pier used for installation was a 2 7/8 inch diameter pipe, using a FS425DC Drive Cylinder
(Gray) with a working area of 14.18 square inches. The installation was performed by Aspen Foundation Repair, certified
installers for Foundation Supportworks products.
The maximum axial load requirement for this project is 14000 lbs working load, 28000 lbs ultimate load. The piers were driven
to depths of 16 to 28 feet, with a minimum installation pressure of 2500 psi. This results in an ultimate axial capacity of 35450
lbs, exceeding the required ultimate load per the design documents.
The following part numbers were installed:
Lead P/N: PP288 w/ Friction Reduction Collar
Extension(s) P/N: PP288
Bracket P/N: FS288BL w/ Guide Sleeve
Summary:
Based on my structural observation, the push piers were installed according to the engineering design load requirements.
Please give our office a call if you have any questions or need further assistance.
Regards,
Daniel Stark, P.E.
Stark Foundations
Stark Foundations has performed the structural observation of the installation of the push piers for the above-referenced
project by reviewing the drive logs and installation photos provided by the contractor.
STRUCTURAL OBSERVATION & INSPECTION LETTER
The following part numbers were installed for piers 15 & 18:
Lead P/N: PP350 w/ Friction Reduction Collar
Extension(s) P/N: PP350
Bracket P/N: FS350BL w/ Guide Sleeve
861-E N Dean Road
Auburn, AL 36830
P: 360.566.7343
Hydraulic Area:14.18 sq. in.
53884
55302
56720
45376
46794
48212
49630
51048
52466
43958
28360
29778
31196
32614
34032
36868
38286
39704
41122
42540
21270
22688
24106
25524
26942
11344
12762
14180
15598
17016
18434
3700
3800
3900
4000
3500
3600
2400
1300
1400
1500
1600
1700
1800
35450
19852
2836
4254
5672
7090
8508
9926
3100
3200
3300
3400
2500
2600
2700
2800
2900
3000
1900
2000
2100
2200
2300
1200
Hydraulic Pressure
200
300
400
500
600
700
800
900
1000
1100
Push Pier Conversion Chart
Drive Cylinder:
(pounds)
Ultimate Capacity
(psi)
FS425DC Drive Cylinder (Gray)