Sukit Yindeesukดร. สุกิจ ยินดีสุข
I specialize in nonlinear finite element analysis, strut-and-tie modeling, and the design, assessment, and rehabilitation of reinforced concrete and cable-supported bridge structures — connecting research from the University of Illinois with two decades of field practice on Thailand's bridges and highways.
From research to practical solutions and products — for a stronger engineering community.
SY Suite — Structural Engineering Software
Browser-based analysis and data tools for practicing structural, bridge and geotechnical engineers — one account, every tool, calculation reports and drawings included.
SY Column
Nonlinear P–Mx–My interaction surfaces by the fiber method, confined-concrete and steel-shape materials, biaxial moment–curvature, ACI / AASHTO / AISC shear design, slenderness, and A1 drawing sheets with DXF export.
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SY GirderNL
Nonlinear moment–curvature, MCFT shear response, full-member analysis with AASHTO HL-93 live load, post-tensioning, capacity interaction diagrams, and the member report with drawing set.
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SY Pave
EPS block geofoam beneath pavements — AASHTO LRFD live-load surcharge, AASHTO 1993 rigid slab, NCHRP 529 stability checks, with PDF reports and drawings.
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SY Pile
Axial capacity by allowable stress on real boring logs, lateral response with linear and nonlinear p-y curves, cracked flexural stiffness, pile groups, handling and driving checks, with the PL-01 drawing sheet and a PDF calculation report.
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SY GeoData
Boreholes with location, soil and rock layers, samples and tests, versions and approval, SPT correlations and advanced search — SY-verified shared data that feeds SY Pile directly.
Launch →Your AI assistant runs the tools
Every SY Suite tool is also available to your AI assistant through the SY Suite connector — create sections, run analyses, and receive the same reports and drawings, metered in prepaid credits. Reads are free.
Connect from Settings →Research, practice, and knowledge-sharing
Across structural and bridge engineering.
Research
Strut-and-tie modeling, nonlinear FEA, topology optimization, and structural health monitoring.
Explore research →Consulting
Bridge and building design, forensic investigation, seismic assessment, and structural health monitoring.
View services →Publications
Peer-reviewed journal papers, conference proceedings, and a book on complex D-Region design.
Read publications →Training
Hands-on programs in bridge analysis software, nonlinear FEA, and structural strengthening.
See programs →