STELCOR WAS TESTED TO 40 TONS (31 TONS WAS REQUIRED). THE PILE COUNT WAS REDUCED BY 36%
OVERVIEW:
Two 5 and 7 story buildings are being built in by the NYC Department of Housing Preservation and Development (HPD) in the Bronx. Together they will contain 66 affordable housing units.
CHALLENGE:
Originally, 1.75” Helical Pulldown Micropiles were spec’d for this project. IDEAL Group and Richard Anastasio partnered to provide an alternate solution using STELCOR Drilled-In Displacement Micropiles. Time constraints and tight site access also weighed on the decision to use STELCOR.
SOLUTION:
Two full scale STELCOR load tests were performed by Procomm Systems and were successfully completed to NYC Building Code standards, at a 23% greater load. The STELCOR test pile’s produced a TOTAL NET SETTLEMENT OF .118 INCHES and .072 INCHES. Those net settlement results are not typos. They accurately tell the story of how STELCOR is producing astonishing results. View the load test report HERE. In all, (72) STELCOR DDM’s manufactured by IDEAL Group, were installed with an ultimate capacity of 40 tons at an average depth of 27 feet. Installation was completed in 7 days and penalty fines that would have incurred were avoided. The pile count was reduced by 36%
INSTALLER:
Richard Anastasio/Procomm Systems
Phillipsburg, NJ
GENERAL CONTRACTOR:
YUCO Builders, LLC
New York City
ARCHITECT:
Bong YU PC Engineering And Architect
New York City
STRUCTURAL ENGINEER:
Bong YU PC Engineering And Architect
New York City
LOADS
40 tons – 80 kips ultimate compression
SPECIFICATIONS:
STELCOR 1200
14” tip or drive plate
12” corrugated grout column
9” solid grout column
8” reverse auger
5.5” steel core
.361 wall thickness 55 ksi
SOILS + EMBEDMENT DEPTH:
View boring logs HERE
28’
TIME FRAME:
Completed within the 7 day time frame
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