📉 ACI 209R / PTI (Creep, Concrete Shrinkage & Steel Relaxation 25-35 ksi Loss)

PT Concrete Long-Term Loss Calculator

Calculate time-dependent long-term prestress losses in post-tensioned transfer girders and parking structures under ACI 209R & PCI Design Handbook: calculate concrete elastic shortening, drying shrinkage strain, concrete compressive creep under sustained precompression, and low-relaxation steel relaxation (totaling 25 to 35 ksi loss), and engineering margins.

1. Project & Operating Inputs

PT Transfer Girders Engineered (Girder Count e.g. 12 Major Spans)

Initial Prestress Force (Kips e.g. 1,200 Kips High-Force Tendons)

Customer Bid Price for Specialty PT Girder Analysis & Review ($)

Finite Element Time-Step Software, Structural PE Verification ($)

2. Financial Breakdown & Yield

ACI 209R TIME-DEPENDENT LOSSES

Turnkey Girder PT Design Profit

Specialty Structural Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost