Chidchanok (Fen) Pleesudjai

SiteSense

A rules first feasibility assessment system integrating fifteen government GIS data sources (USGS, FEMA, USDA, EPA, NOAA) with six specialized analysis modules that cross check nineteen compound risk interactions grounded in IBC 2021, ASCE 7-22, ACI 360R-10, and ACI 350-20. The architecture applies deterministic engineering rules before engaging any AI assisted cross domain synthesis, preventing model generated outputs from overriding verified calculations. Users draw a parcel boundary on a satellite basemap and the system returns a structured risk assessment with per layer confidence classification.

CarbonLens

A corridor level tool for comparing embodied and construction phase carbon across transit infrastructure alternatives. Users draw corridor segments on a map and select structural section types (conventional RC, fiber reinforced concrete, or supplementary cementitious material rich mix). The tool returns side by side comparison across seven metrics, including embodied carbon, construction phase traffic emissions, cost, duration, and community disruption. The construction phase model, built around corridor AADT and delay duration estimates, showed that 84 percent of the carbon benefit of FRC over conventional RC derives from faster construction rather than material composition alone. Data integration draws on live ADOT traffic, US Census, LEHD job counts, and TIGERweb road geometry.

NOVO Primekss Digital Twin

A two bay test panel from a Primekss PrimX steel fiber reinforced concrete industrial floor system. The slab was instrumented with distributed fiber optic sensors during construction. Three static load tests were performed at the east, center, and west of the panel using IBC water tanks to apply a 10 kN/m² uniformly distributed load on the slab surface. The interactive web viewer ties analytical moment curvature predictions to in situ instrumentation, supporting parameter studies for slab on ground design and forming the analytical basis of an in progress paper for the 2026 fib symposium in Budapest.

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ช่างเก๋า Chang Kao

A local only AI knowledge system for Thai highway construction supervisors, built in collaboration with the Thai Department of Highways. The system runs on commodity 16 GB RAM laptops with no GPU or cloud dependency, keeping confidential project documents on premises. Three architecture layers structure the design. A fully local 12B parameter model (Typhoon API, SCB 10X Thai first LLM) handles natural language queries. A two tier data security layer separates public DOH regulations from confidential project specific documents. A citation enforcement layer requires every response to identify the source document, clause, and page number, failing silently when citations cannot be confirmed. The system targets four function tracks used by Thai site engineers, including GFMIS payment readiness, procurement alignment, preinspection preparation, and audit trail generation.

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Doctor of Philosophy, Civil, Environmental and Sustainable Engineering

Advisor, Prof. Barzin Mobasher.

Major in Structural Engineering. GPA 3.35 / 4.00.

Master of Science, Civil, Environmental and Sustainable Engineering

Advisor, Prof. Barzin Mobasher.

Committee, Prof. Subramaniam Rajan and Prof. Narayanan Neithalath.

Major in Structural Engineering. GPA 3.08 / 4.00.

Thesis, Generalized Modeling and Experimental Validation of Flexural Response in Cement Based Composites.

Bachelor of Engineering, Civil Engineering

Second Class Honors. GPA 3.39 / 4.00.

Research Associate

• Developed analytical moment curvature models for fiber reinforced concrete pavements incorporating elastic plastic constitutive behavior, shrinkage, and fatigue mechanisms.
• Co-authored the Arizona Department of Transportation SPR-807 Final Report, Fiber Reinforcement in Concrete Pavements, with companion implementation and mix design guidance.
• Advanced a residual strength based design approach for slab on ground, replacing modulus of rupture only criteria with post cracking tensile response.
• Proposed region specific pavement design solutions demonstrating up to 20 percent slab thickness reduction, replacement of more than 50 percent of conventional rebar with fibers, and extended service life under combined traffic and climate loading.

Bridge Design Engineer

• Led structural design and analysis of 15 or more bridges annually across multiple regions of Thailand before beginning study leave.
• Applied AASHTO LRFD specifications and finite element analysis to site specific bridge projects.
• Directed field survey teams performing elevation mapping, riverbed profiling, and flood risk assessments.
• Authored annual technical reports supporting project prioritization, budgeting, and policy decisions.

Research Assistant

• Developed generalized flexural response models for FRC, hybrid RC, TRC, UHPC, laminated, and sandwich composites. These models formed the analytical core of the M.S. thesis.
• Led an SRP sponsored experimental program on precast water tank panels using full and partial fiber reinforcement.
• Conducted full scale fatigue testing with Valley Metro over 2,000,000 cycles. Findings supported FRC adoption on the 2023 Metro Phoenix light rail extensions, with projected savings of 12 million dollars per mile.
• Conducted full scale testing of precast tunnel lining segments under a BASF supported program.
• Performed materials testing under ASTM C1609, C39, C1550, and EN 14651.

Project Coordinator (Civil Engineer)

• Coordinated with Bangchak Corporation Public Company Limited and contractors to deliver gas station projects aligned with safety and functionality requirements.

Engineer (Core project team)

• Served as the structural expert on the team, providing engineering interventions for aging mortar and foundations originally designed for limited weight when proposed extensions exceeded original load capacity.
• Strengthened existing iron and steel elements in preference to replacement.
• Uncovered and preserved original column and beam systems rather than substituting new framing.
• Specified passive design retrofits including double volume open ceilings with skylights, reused window jambs as light apertures, and open walls for natural ventilation.
• Selected renovation work and team credit detail listed under Selected Renovation Work below.

One Udomsuk Project

Renovation of a deserted alley of old shophouses into a community mall connected to BTS Udomsuk Station. The project encompassed 44 shophouse units across six buildings, originally 30 to 35 years old. Original column and beam systems were uncovered and reused rather than replaced. Leftover wood, galvanized iron, and old window frames were repositioned into new uses. The studio office occupied the fourth floor of Building A, built almost entirely from reused construction site leftovers.

Niwas Ayutthaya

A traditional Thai house with a high gable roof, severely damaged by flood, redesigned into a tourist guesthouse while preserving the historical identity of the property. The renovation was commissioned by the grandchildren of the original owner, continuing multi generational stewardship of the property. Fifty year old windows and balcony railings were retained in the new design.

Tatien Lodge

A 70 to 100 year old street corner building reworked into a tourist hostel without erasing its historical character. Original red brick walls, antique wavy surface tiles, and Padauk wood stairs were retained from the original build.

Wat Ratchanatdaram Worawihan Community Hostel

A renovation of a 100 year old residence from the reign of King Rama V into a community hostel, within a Bangkok neighborhood whose history reaches back to the reign of King Rama III. The team preserved portions of the original floor and walls to keep the feeling of the old house intact.

BHIRAJ TOWER at Sathon, Downtown Oasis

A 50 year old warehouse and office building converted into a green urban office campus with modern lifestyle rental offices. Credited as Engineer on the project alongside Aungsana Boonkasem (Architect) and Chanan Asirpong (Marketing).