Case Study 545-2
Atlas
Systems
A 135,000 Pound
Subdivision Monument
is Lifted Four Feet
Overland Park, Kansas
Installed by:
K. C. Master Companies
Grandview, Missouri
A 135,000 POUND
SUBDIVISION MONUMENT
WAS LIFTED FOUR FEET!
Description of the Structure: The masonry monument at the
entrance to a fashionable residential development measures 46’ long and 13-1/2’
tall. The foundation consisted of a reinforced concrete footing on grade with an average
thickness of 30 inches. The monument consists of two columns, each three feet square, with
a wall between the columns of double thick masonry.
Cause of the Problem: Planned road improvements would have
buried the structure under four feet of fill soil during construction a the new road. A
review of the cost to demolish, remove the debris and reconstruct another monument was
judged to be far more expensive than lifting the existing monument Four feet with 12 ATLAS SYSTEMS Continuous Lift Piers.
Soil Description: No soil information was available. Based
upon the pier installation records, the soil profile consisted of fill material and
topsoil underlain by a rock strata at a depth of 9-1/2 feet below the surface.
| Repaired By: Average Drive Force:
Average Factor of Safety:
Number of Piers: Twelve (12) |
K. C. Master Companies, D.B.A., Grandview, Missouri 40,600 pounds Average
Lift Force: 11,330 pounds
3.59 : 1 (259% above actual lift force)
Amount of Lift: 48 inches Average Depth: 9.5 Feet |
QUICKLY INSTALLED!
- Each ATLAS SYSTEMS Continuous Lift Pier was driven to a
suitable bearing stratum and tested before the structure was lifted. The installation
summary is presented on page 5.
GENTLE, ACCURATE LIFT!
The foundation was gently and uniformly lifted using a manifold system
and a hydraulic pump. The project was completed in a little more than a day! Job
completion was much quicker and at a much lower cost than removing and replacing the
structure.
SUCCESS! The pier configuration is shown at two
stages of the structural lift. Notice how large lifts are accomplished gently, uniformly
and quickly using short stroke rams and continuous thread lag studs. The lower photo shows
the footing and structure during the lift. Only half of the 48 inch lift is shown here.
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 |
|
