PTKalc
PTKalc is a purpose-built tool for continuous and post-tensioned beam design —
automating AS 3600 calculations and reinforcement layouts. It transforms complex beam
analysis into clear, engineer-ready results, making PT design faster, more reliable, and
accessible to every engineer.
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Hello PTKalc!
PTKalc is a cutting-edge web application by RK Software Solutions designed for structural engineers,
specialising in the analysis and design of continuous and post-tensioned concrete beams in accordance with
AS 3600-2018. Integrated within the RKALC suite, PTKalc allows users to define beam spans, load combinations,
and section properties, and delivers detailed design calculations and reinforcement layouts.
Built for both seasoned practitioners and engineering graduates, PTKalc streamlines what traditionally have
been laborious calculations—making design, verification, and iteration faster, more reliable, and better
documented. Key features include load combination handling, beam balancing, and interactive section definition.
Whether you’re designing multi-span continuous beams, post-tensioned elements, or simply checking compliance
with loading standards, PTKalc helps you work with clarity, speed, and confidence
