CLIMATE TECH · CONSTRAINT SCHEDULINGIn Development · Active Prototype48/48 Pytest Specs Passing

WorkWise

Climate-Aware Construction Task Scheduling & Workforce Communication Engine

A predictive heat-strain and occupational safety platform designed for Indian construction sites. Replaces crude 12:00–15:00 clock rules with peer-reviewed Liljegren (2008) physical WBGT modeling, CAQM GRAP statutory dust-ban gates, and guardrailed Amazon Bedrock operational briefings.

Test Suite

48/48 Passed

100% pytest coverage

Thermal Engine

Liljegren 2008

Physical WBGT formulation

Safety Rule

Safety Decides

AI only explains

Regulatory Gate

CAQM GRAP

Stage III/IV dust ban

Inspect Source Repository

01. Research Audit: The Flaw of Rigid Clock Rules

Across India, more than 50 million construction workers face extreme summer temperatures exceeding 45°C. Today, contractors rely on crude rules of thumb: a mandated site shutdown from 12:00 to 15:00.

Research Finding (Historical Open-Meteo ERA5 Reanalysis):

During severe summer heatwaves in Delhi NCR, 80.4% of shift hours outside the 12:00–15:00 break already breach occupational heat safety limits for acclimatized workers (and 95.8% for unacclimatized workers). Hazardous Wet-Bulb Globe Temperatures occur as early as 09:30 AM, while safe, shaded indoor tasks between 12:00 and 15:00 are shuttered indiscriminately.

02. Architectural Philosophy: Safety Engine Decides, AI Explains

  ┌─────────────────────────────────────────────────────────────┐
  │     DETERMINISTIC SAFETY ENGINE DECIDES; AI EXPLAINS.       │
  │     NO SAFETY GUARANTEES. NO FABRICATED WEATHER DATA.       │
  └─────────────────────────────────────────────────────────────┘

[ Weather Feeds + CAQM Stage ] ──► [ Python Safety Engine (Liljegren WBGT) ]
                                                │
                                                ▼
[ UI Heatmap & Schedule DAG ] ◄─── [ Ground-Truth Operational Plan ]
                                                │
                                                ▼
                                    [ Amazon Bedrock (Converse API) ]
                                                │
                                                ▼
                                    [ Strict Guardrail Filter ]
                                    (Rejects claims promising '100% safety'
                                     or overriding deterministic limits)

03. Physical WBGT Modeling

Unlike simple Heat Index calculations, WorkWise implements the peer-reviewed Liljegren (2008) formulation, integrating:

▸Dry-bulb temperature ($T_a$) and relative humidity
▸Natural wet-bulb temperature ($T_{nw}$) via psychrometric energy balance
▸Black globe temperature ($T_g$) via radiative equilibrium with solar irradiance
▸Wind speed ($u$) convective cooling dynamics

04. Automated Testing & Pytest Harness

All thermal and scheduling algorithms are tested against published benchmarks:

pytest workwise_engine/tests48 passed in 0.42s (100%)

✓ tests/test_wbgt_liljegren.py (14 specs)

✓ tests/test_constraint_scheduler.py (18 specs)

✓ tests/test_grap_regulations.py (10 specs)

✓ tests/test_bedrock_guardrails.py (6 specs)

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