Fluid-power diagram software
Struct is browser-based hydraulic schematic software for documenting hydraulic and pneumatic circuits with ISO 1219-oriented symbols, named ports and routes, editable project data, linked specifications, and review context.
Rendered from the checked-in Hydraulic actuator circuit starter. Ratings and settings remain explicit placeholders until an engineer selects and verifies the real components.
Documentation before calculation
A useful fluid-power schematic distinguishes energy paths, control paths, component states, design values, and unresolved engineering inputs. Struct keeps those facts editable without pretending the drawing is a simulation.
Model pumps, motors, actuators, reservoirs, valves, conditioning, instruments, operators, and connections with purpose-specific editable shapes.
Distinguish working lines from pilot, drain, and exhaust relationships instead of using one generic arrow for every connection.
Link requirements, calculations, selected-device evidence, assumptions, decisions, and Review threads to the diagram or the exact item they govern.
Hydraulic and pneumatic library
The current Struct catalog contains 84 mechanical symbols carrying ISO 1219 context, within a 196-symbol mechanical library. Use the matching semantic line preset, then add verified component identity, settings, ratings, and sources.
Struct's symbols and presets are documentation aids, not a claim of standards certification. Review the current licensed standard and selected-component documentation before release.
Fluid-power documentation workflow
Build one functional story at a time, keep the normal state and line function explicit, and bind every design value to evidence rather than typing an unexplained number beside a symbol.
Define the machine function, medium, operating modes, energy source, loads, control boundary, environment, and responsible owner.
Use one of the hydraulic, pneumatic, or twin-circuit starters, or begin blank. Replace every placeholder with selected-device data only when the source supports it.
Route working, pilot, drain, exhaust, suction, pressure, and return relationships to their intended terminals. Label ambiguous functions and operating states.
Check the current ISO 1219 diagram rules, hydraulic or pneumatic safety requirements, component data, calculations, failure modes, and machine risk assessment before approval.
Three focused starters
Each starter is an editable reference layout. It does not select components, establish ratings, or certify the finished circuit.
Reservoir, variable pump, relief protection, pressure indication, 4/3 directional control, one-way flow control, return filtration, and a double-acting cylinder.
Compressor, receiver, dryer, regulator, indication, lubrication, 5/2 directional control, dual exhaust silencers, and a double-acting cylinder.
A reference composition with a drifting cylinder, bidirectional floating motor, spring-centered 4/3 valves, pumps, filters, reservoirs, and separate functional circuits.
Scope and standards boundary
ISO 1219-1 establishes graphical-symbol elements and rules. ISO 1219-2 establishes the main rules for hydraulic and pneumatic circuit diagrams. Struct provides an editable documentation workflow around that context.
Apply the standards and requirements appropriate to the machine, jurisdiction, selected components, intended use, and risk assessment. The project owner remains responsible for engineering analysis and release.
Hydraulic schematic software questions
These answers keep drawing capability, standards context, analysis, and approval separate.
Hydraulic schematic software is used to document a fluid-power circuit with graphical symbols for sources, reservoirs, actuators, valves, conditioning, instruments, and the working, pilot, drain, and return relationships between them.
Yes. Struct includes pneumatic actuators, compressors, receivers, air preparation, directional valves, silencers, instruments, pneumatic working lines, and pilot or exhaust relationships, plus an editable pneumatic actuator starter.
No. Struct documents system structure, relationships, metadata, specifications, and review context. It does not calculate pressure drop, flow, heat, cylinder force or speed, component sizing, transient response, or safety performance.
No certification is claimed. Struct provides ISO 1219-oriented graphical symbols and semantic connector presets for documentation. Engineers must verify the selected symbols, diagram rules, component data, and application against the licensed current standards and project requirements.
Struct exports the rendered canvas as SVG, PNG, fitted Print or PDF, and full-fidelity Struct project JSON. Recorded project quantities can also be summarized through the quantity-detail workbook, but part identity and suitability remain engineering inputs.