SD-11 Closeout Submittals
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NOTE: Delete these paragraphs if load testing is
not required. Insert the number of test piles to be
load tested or indicate on drawings. When it is
desirable to show analysis for determination of
allowable pile capacities from load tests and for
relating load test capacities to allowable loads,
the following shall be included:
1. Test measurements: The ultimate test load (200
percent of allowable design load) shall be
maintained for a minimum 24 hours and then released.
Broomed heads shall be cut to sound wood before
making settlement measurements. The safe or
allowable design capacity of a test pile as
determined from the results of load tests shall be
the lesser of the two values computed according to
the following:
(a) One-half the load that causes a net settlement
after rebound of not more than 0.25 mm per metric ton
0.01 inch per ton of total test load.
(b) One-half the load that causes a maximum gross
settlement of one inch provided that the load
settlement curve shows no sign of failure.
2. Pile capacity: The capacity, as driven, of
single piles not in clusters in the structure shall
be not less than [_____] metric tons tons. The
capacity will be determined by the following
formulas, modified according to the data obtained by
the load tests:
For single-acting hammers
[R = 2 WH/( s
+ 0.1P)
85.678
W]
[R = 2 WH/(S + 0.1 P/W)]
For double-acting hammers
[R = 2.71E/(
s
+ 0.1P)
85.678
W]
[R = 2E/(S + 0.1 P/W]
Where R is the allowable static pile load in kg
pounds, W is the weight of the striking part of the
hammer in kg pounds, H is the effective height of
fall in meters feet, E is the actual energy
delivered by the hammer per blow in joule foot-pounds,
S is the average net penetration in mm inches per
blow for the last five blows after the pile has been
driven to a depth where successive blows produce
SECTION 02458N
Page 5
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