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FOUNDATION PLAN
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SCALE:^ = 1'-0"
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FOUNDATION UNDERPINNING SYSTEM
4. Piles shall be 800 psi minimum: compressive strength
8. Piles shall be driven to tip elevation of -10.0•,
.'parallel to grain .and shall measure at feast :eight inches
referenced to NGVD, or to refusal,
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TIMBER PILES
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(8") in diameter at the tip and at least 12" diameter at
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the cutoff, with these measurements being taken under .the
- 9. Jetting, auguring and other methods of pre-excovation
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1.: All. timber foundation piles shall be of Type 1 species-
..bark.'
to achieve the minimum tip elevation may not be permitted.
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.lumber as defined: in section: 1822.0 of the Massachusett
without prior approval by the Engineer. Where permitted,
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State Building Code and 'shalt conform to the .applicable
�5. Each pile shall be driven in one piece, without splicing,
the pre -excavation must be carried out in a :manner which
AS NOTED
'provisions of the Standard for Round Timber. Piles", AST
..:and shall be driven to a sufficient depth to develop o
will not impair the carrying capacity of the piles already in -
-
LATESTREVISION -
-. D-25....
: minimum 20 kip food carrying ,capacity. place. Immediately after completion of jetting or auguring;
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2. Alltimber.piles`shall-:be pressure treated -with waterbo
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ne 6. The,.design load capacity the pile may be computed
the pile shall be advanced to the maximum depth of
pre -excavation and driven below this depth to the required
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Pp'sT�a
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CCA preservative in: accordance with-AWPA C3. Treatments
by the following driving formula:
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food resistance specified herein.
DATE
'- 6/9104
.shall Conform to the AWPB Standard ,MP -4 All .pile cutoffs
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DRAWN BY -
shall be ,treated in accordance with AWPI Standard M-4.
R 2E / (S+C) 10...The pile driving contractor shall keep and submit a pile
The minimum preservative treatment retention for timber
driving log for each pile.
TTL.
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piles shall be 2.5 pcf.
where
CHECKED BY
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R = allowable pile toad in. pounds
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3. Before' any treated piles are driven, a certification sh
I E = energy per blow in foot-pounds
be submitted, certifying that the piles were free from
5 ='penetration in inches' per blow
decay,- were properly peeled and otherwise_ prepared befor
C = 1.0 for drop hammer; 0.1 for steam or
treatment, and the. method. of treatment, the chemical.'
;air :hammer -
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composition and :the amount of retention -of the
preservative conform to the requirements specified herein
7.During 'the pile driving operation, any sudden decrease in
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preservative retention sholl be determined assay,
-driving resistance -shall be investigated with regard to the
.The ,by
method.' ;:':
possibility of breakage of the pile, and if such sudden
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decreasein driving -:resistance cannot • be correlated to '
4: Piles shall be 800 psi minimum compressive. strength
-at
;boring data, and if the pile. cannotbe removed for
porallet to groin and shall measure -least eight inches
inspection. it shall be considered adequate reason for the
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(8") in diameter at the tip and at least 12` --. diameter at
.' rejection of the pile:OF
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the cutoff:; with these measurements being taken under the
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bark.
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