"SEND THE STUDENTS HOME!"
THE SCHOOL BUILDING HAS FAILED!
It seems that the Hurricane, Utah, School Board was faced with a problem. A portion of
their elementary school was constructed on improperly compacted fill material. Three
classrooms were showing perimeter settlement of up to two and one-half inches. Two of the
partition walls between classrooms also required restoration. Could the building be saved
without ruining the budget?
Atlas Piers of Utah,
Inc. installed 14 Atlas Resistance Piers along the perimeter of the foundation and eight
piers inside the structure. Not only did the Atlas Resistance Piers provide stabilization,
the piers were used to raise the foundation as much as 2-1/2 inches to restore the
school to near original elevation.
The Hurricane School Board selected Atlas Resistance Piers to repair the
settlement. Twenty-two Atlas AP2S-3500 Piers were used on the perimeter and along the
distressed interior partition walls to stabilize and restore the building. The economical
and permanent solution to this settlement was accomplished in a matter of days, not weeks.
The piers were installed with clean and quiet portable hydraulic equipment. Each pier was
tested to a load greater than required to support the structure, thus insuring a factor
of safety against future settlement! After lifting the structure, the voids were
filled with grout.
THE SOLUTION: ATLAS
RESISTANCE PIERS!
"PASSED THE TEST!"
PROJECT SUMMARY
| Installed By: |
Atlas Piers of Utah,
Inc. |
| Number of Piers: |
14 exterior, 8 interior |
| Part Number: |
AP2S-3500 |
| Avg. Pier Depth: |
70 feet - 9 in. |
| Avg. Load per
Pier: |
35,866 lbs., exterior
23,175 lbs., interior |
| Avg. Drive
Force: |
58,545 lbs., exterior
34,507 lbs., interior |
| Ultimate
Capacity: |
85,000 pounds |
| Amount to Lift: |
1/64" to
2-1/2" |
| Factor of
Safety: |
1.63 : 1 (Drive to
Lift) |
| (Exterior
Averages) |
2.37 :1 (Ultimate to
Lift) |
| Factor of
Safety: |
1.49 : 1 (Drive to
Lift) |
| (Interior
Averages) |
3.67 :1 (Ultimate to
Lift) |
|
Atlas Resistance Piers
Lift Force vs. Drive Force & Ultimate
The chart above shows how the pier load relates to the "proof load" or driving
force and to the ultimate capacity of the pier.
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The photograph on the left shows Atlas
Resistance Piers being installed along one of the partition walls. The piers are driven to
a load bearing stratum or rock by quiet hydraulic equipment.
On the right is a view of an installed Atlas Resistance Pier on the exterior
following the successful restoration of the foundation.
Chance
Civil Construction
1026-B South Powell Road
Independence, MO 64056
Office: (816) 796-6800
Fax: (816) 796-0919
Toll Free: (877) 285-2739
Email: info@atlassys.com
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