Flow Chart - Construction of WMM Layer

flowchart TD %% --- PRE-CONSTRUCTION STAGE --- A(["Start"]) --> B["Identification of Quarry Source by Contractor"] B --> C["Collection of Certificates about Quarry Source"] C --> D["If all materials are OK, use them for mixing in plant"] D --> E["Collection of coarse & fine aggregates, quarry dust, and binding material"] E --> F["Test on coarse aggregates:\nImpact Value, Flakiness, Elongation, Gradation, Abrasion Value, etc."] F --> G["Send sample to lab"] G --> H["Test blended sample for sieve analysis, LL, PL, and PI"] H --> I["Check for MDD"] I --> J["Construction of subgrade/subbase/lower layer completed?"] J --> K{"Is subbase/lower layer completed?"} K -- No --> J K -- Yes --> L["Construction of trial test for lateral confinement\nwith approved material after testing"] %% --- CONSTRUCTION STAGE --- L --> M{"Test field compaction pass?"} M -- Fail --> N["Scarify, loosen, recompact"] N --> L M -- Pass --> O["Brooming till all loose material & dust removed"] O --> P["Very light sprinkling of water\n(for damp condition) before application of emulsion"] P --> Q["Spreading of WMM material over prepared GSB"] Q --> R["Spread uniformly in one layer to required thickness\nby paver or motor grader"] R --> S["Check with templates or survey levels"] S --> T{"Levels OK?"} T -- No --> U["Scarify and relevel"] U --> S T -- Yes --> V["Rolling and compaction"] V --> W["Check for MDD (Field Density Test)"] W --> X{"Meets required density?"} X -- No --> N X -- Yes --> Y["Approved for next layer / surface course"] Y --> Z(["End"]) %% --- STYLE DEFINITIONS --- classDef process fill:#e7f0fd,stroke:#4682b4,stroke-width:1px; classDef decision fill:#fff5b7,stroke:#b8860b,stroke-width:1px; classDef fail fill:#fcd5ce,stroke:#d22b2b,stroke-width:1px; classDef pass fill:#d4f8e8,stroke:#2e8b57,stroke-width:1px; class A,B,C,D,E,F,G,H,I,J,L,O,P,Q,R,S,V,W,Y process; class K,M,T,X decision; class N,U fail;