HomeMy WebLinkAboutB12-0274 SOIL NAIL VERIFICATION TEST STAMPED LETTER INYeh and Associates, Inc.
Consulting Engineers&Scientists
August 31, 2012 Project No. 212-108
Mr. Shaun Brainard
B&Y Drilling, Inc.
P.O. Box 1878
Rifle, Colorado 81650
Subject: Review of Permanent Ground Nail Wall Testing, Weltner Residence, 1677
Buffehr Creek Road, Lott, Filing 1, Eleni Znermer Subdivision, Vail, Colorado
Dear Mr. Brainard,
A representative of Yeh and Associates conducted verification testing on August 29,
2012 on the permanent ground nail wall at the Weltner Residence, 1677 Buffehr Creek Road,
Lot 1, Filing 1, Eleni Znermer Subdivision, Vail, Colorado. The wall was constructed by B&Y
Drilling, Inc.
We conducted one soil nail verification test on a sacrificial nail. The verification test was
loaded to 2.0 times the design load (see attached). Test results indicated the test nail attained
the required test loads. The test was conducted in general conformance with FHWA guidelines
and the test results are attached.
Based on our observations and test data, it appeared the permanent ground nail wall
constructed by B&Y Drilling, Inc. was in general conformance with plans provided by Yeh and
Associates, Inc., dated June 11, 2012.
If you have questions or need additional information, please call us at 970-384-1500.
YEH AND ASSOCIATES, INC.
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Richard D. Johnson, P.E.
Project Manager a 3532 0
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NA1-ECG
5700 East Evans Avenue, Denver, CO 80222, (303) 781-9590, Fax (303) 781-9583
1525 Blake Avenue, Glenwood Springs, CO 81601, (970) 384-1500, Fax (970) 384-1501
570 Turner Drive, Suite D, Durango, CO 81303, (970) 382-9590, Fax (970) 382-9583
Soil Nail Verification Testing
Wall Designation: Weltner Residence Design Test Load: 13,572 Ibs
Job Number: 212-108 Bond Length: 10 feet
Testers: KA Free Length: 9 feet
Date:August 29, 2012 Stress Length: 1 foot
Load Hold Time Load Pressure Total Movement Residual Elastic
Ibs (psi) inches inches inches
AL(.10 DTL) until stable 4918 400 0.000
0.25DTL until stable 3393 276 -
0.50DTL until stable 6786 551 0.108
0.75DTL until stable 10179 825 0.146
1.00DTL until stable 13572 1100 0.182
1.25DTL until stable 16965 1375 0.225
1.50DTL 1 min 20358 1650 0.274
(Creep Test) 2 min 0.275
(Hold 10 3 min 0.277
min-minimum) 5 min 0.279
6 min 0.279
10 min 0.279
20 min
30 min
50 min
60 min
1.75DTL until stable 23751 1925 0.292
2.00DTL until stable 27144 2200 0.325 0.231
AL(.10 DTL) until stable 4918 400 0.094
Preliminary Acceptance:
0.005 Must be less than 0.04 inches- If necessary hold to 60 min (6 to 60 less than 0.08 inches)
Comments: Ran test to 54,198 Ibs and held load.
VERIFICATION TEST
Weltner Residence Test Nail#1, Sacrificial at east end of wall
Project No. 212-108
Bond Length= 10 feet
Free Length= 9 feet 40
Hole Diam. = 4 inch
35 ------------------T------------------a------------------T------------------ ------------------+---------- -----
I
Load Movement Bond 1 '
30 ------------------ ------------------i------------------T------------------r---------------- ------------------
Ibs (in)
(psi) i
4918 0.000 3.3
6786 0.108 4.5 25 ------------------r -----------------4------------------T-----------------F---- ----------- ------------------
10179 0.146 6.8 = I
13572 0.182 9.0 Q
-----------------T------------------1------------------T------- -----�r------------------T------------------
16965 0.225 11.3 c 20 - � � � --
20358 0.274 13.5 p
23751 0.292 15.8
15 ------------------T- -----------------;--------------- -T-----------------r------------------T------------------
27144 0.325 18.0 i ;
36950 0.428 24.5
49270 0.528 32.7 1 i i
10 ------------------T----------------- ----------------- -----------------r------------------T------------------
54198 0.577 35.9 ; ; T i i
5 ------------------T --------------;-------------------------------------- ------------------T-------------------
Max. Load= 54198 lb
Bond Area= 1508 in'
Ultimate Bond = 35.9 psi 0
0.000 0.100 0.200 0.300 0.400 0.500 0.600
Total Movement(inches)