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THINGS YOU SHOULD KNOW ABOUT PILING MANUFACTURED BY CTC

• Availability and production rates for pile sizes can vary from year to year.  Please contact us for current availability and production rates for any pile size.



• Please call CTC for budget prices early in your project development. CTC can prepare a firm quotation for piling when the design is shown on the drawings or when adequate design criteria are determined for pricing purposes.



• CTC can design the piles for your project after receiving a purchase order for the pile production. We need the following information in order to perform the design:
  • Specification or code governing the design
  • Unfactored axial loads, moments and shears acting on the piles, and in what combinations (must be broken into dead loads, live loads, seismic, wind, etc.)
  • Fixity of pile to pile cap connection (Fixed or Pinned)
  • Maximum unsupported length from bottom of pile cap to point of fixity below grade
  The Engineer of Record should complete the Pile Design Information Worksheet for CTC to begin the design process.
  
  
• CTC regularly adds corrosion inhibitor or silica fume to the concrete mixture when required by the specifications. However, CTC's piles have been used in saltwater service since the early 1960's, prior to the availability of these additives, with no known durability problems. The "secret" has always been high quality, dense, cement-rich concrete with low water-to-cement ratio and careful attention to adequate concrete cover over the reinforcing.



• Most piling manufactured in the Pacific Northwest have the high prestress level (i.e. P/A=1200 psi) and concrete strength of 8,000 psi at 28 days. The lower prestress level results in higher axial load capacity, but different concrete stresses to consider during handling, transportation and driving. Lower concrete strength can be used, but consideration must be given to reduced pile capacity and increased curing time to reach driving strength.