Engineering Library — Coverage Roadmap

What’s covered, what’s deferred. Updated as tiers complete.

Decision log

• 2026-05-14 — Project initiated. Scope: all major engineering disciplines (mechanical, electrical/electronic, materials, control, structural, civil, chemical, biomedical, aerospace, manufacturing, software/embedded, industrial, thermal, fluids). Structure mirrors the Languages library. Sister library Robotics/ integrates these for robotic systems.

Tier 1 — Candidate set (proposed, pending user confirmation)

Tier 1 spans ~45 deep notes across all disciplines — wider than Robotics because the discipline footprint is larger. Each row is a candidate deep note.

Mechanical (7)

#	Topic	Slug
1	Statics — equilibrium, free-body diagrams	statics-fundamentals.md
2	Mechanics of materials — stress, strain, modulus	mechanics-of-materials.md
3	Beam theory — bending, shear, deflection	beam-theory.md
4	Machine elements — fasteners, bolts, threads	fasteners-bolts.md
5	Bearings — ball, roller, sleeve, thrust	bearings.md
6	Gears & power transmission	gears-power-transmission.md
7	Vibration & dynamics	vibration-dynamics.md

Materials (6)

#	Topic	Slug
8	Steel — grades, alloys, heat treatment	materials-steel.md
9	Aluminum alloys — wrought & cast	materials-aluminum.md
10	Engineering polymers — thermoplastics, thermosets, elastomers	materials-polymers.md
11	Composites — CFRP, GFRP, metal-matrix	materials-composites.md
12	Engineering ceramics	materials-ceramics.md
13	Materials selection — Ashby charts, trade-off methodology	materials-selection.md

Electrical (5)

#	Topic	Slug
14	Circuit analysis fundamentals — KCL, KVL, Thevenin/Norton	circuit-analysis.md
15	AC analysis — phasors, impedance, three-phase	ac-analysis-three-phase.md
16	Electric motors — DC, AC induction, BLDC, stepper, synchronous	electric-motors.md
17	Transformers & power-system fundamentals	transformers-power-systems.md
18	Electromagnetics for engineers — Maxwell’s equations applied	electromagnetics-engineering.md

Electronics (6)

#	Topic	Slug
19	Semiconductor devices — diodes, BJT, MOSFET, IGBT	semiconductor-devices.md
20	Op-amps — topologies, real-world limits, design	op-amps.md
21	Digital logic — combinational, sequential, FSMs	digital-logic.md
22	Power electronics — switching converters, rectifiers, inverters	power-electronics.md
23	PCB design — stack-up, routing, signal integrity, EMI	pcb-design.md
24	Microcontrollers & SoCs — architecture, peripherals, firmware basics	microcontrollers.md

Control systems (4)

#	Topic	Slug
25	Classical control — root locus, Bode, Nyquist, lead-lag	classical-control.md
26	State-space methods — controllability, observability, LQR	state-space-methods.md
27	Digital control — sampling, Z-transform, discretization	digital-control.md
28	Model predictive control (MPC)	mpc-control.md

Thermal / fluid (5)

#	Topic	Slug
29	Thermodynamics — laws, cycles, exergy	thermodynamics.md
30	Heat transfer — conduction, convection, radiation	heat-transfer.md
31	Fluid mechanics — incompressible, Bernoulli, viscosity, Reynolds	fluid-mechanics.md
32	Pumps, fans, turbomachinery	pumps-turbomachinery.md
33	HVAC fundamentals	hvac-fundamentals.md

Structural / civil (3)

#	Topic	Slug
34	Structural analysis — trusses, frames, indeterminate structures	structural-analysis.md
35	Concrete & reinforced-concrete design	reinforced-concrete.md
36	Steel design & seismic detailing	steel-design.md

Manufacturing / industrial (4)

#	Topic	Slug
37	Machining — turning, milling, grinding, EDM, CNC	machining.md
38	Joining — welding, brazing, soldering, adhesives	joining-welding.md
39	Additive manufacturing — FDM, SLA, SLS, MJF, DMLS	additive-manufacturing.md
40	Casting, forging & forming processes	casting-forging-forming.md

Aerospace / chemical / biomedical / software-embedded (5)

#	Topic	Slug
41	Aerodynamics fundamentals — lift, drag, compressibility	aerodynamics.md
42	Propulsion — turbojet, turbofan, rocket	propulsion.md
43	Chemical-process fundamentals — mass/energy balance, reactions, separations	chemical-process-fundamentals.md
44	Real-time embedded systems — RTOS, scheduling, jitter	realtime-embedded.md
45	FPGA design — RTL, synthesis, timing closure	fpga-design.md

Total: 45 candidate Tier 1 deep notes.

Tier 2 — Deferred (likely candidates)

Fracture mechanics, fatigue analysis, FEM/FEA, CFD, advanced control (H-infinity, sliding mode, adaptive), signal processing, RF design, antenna theory, photonics, semiconductor processing, mems, microfluidics, biomechanics, bioinstrumentation, environmental engineering, transportation engineering, soil mechanics, hydraulics, structural dynamics, plate & shell theory, advanced concrete, steel-connection design, masonry, timber, pre-stressed concrete, refrigeration cycles, internal-combustion engines, gas turbines, spacecraft attitude control, orbital mechanics, GNC, hypersonics, reliability engineering, ergonomics, lean manufacturing, six-sigma, quality systems, supply-chain, project management for engineers.

Tier 3 — Encyclopedic family indexes (planned)

• Steel grades — every ASTM/AISI/EN designation in one indexed table
• Aluminum alloys — 1xxx-7xxx series + cast designations
• Engineering polymers — thermoplastics + thermosets + elastomers exhaustive
• Composites — CFRP/GFRP/AFRP variants, MMC, CMC
• Fasteners — every screw / bolt / rivet / nail family
• Bearings — every rolling-element + plain bearing style
• Gears — spur / helical / bevel / worm / planetary / harmonic
• Standard structural shapes — W / S / HP / C / L / HSS profiles
• Electric motors taxonomy — every motor type (also cross-linked to Robotics/Tier3 if we add one there)
• Semiconductor packages — every IC package family
• Op-amp variants — every topology + key parameter
• PCB substrates — FR-4 / Rogers / ceramic / flex
• Heat-transfer correlations — empirical Nusselt-number correlations
• Pipe schedules & fittings — NPS / DN sizes
• Welding processes — SMAW / GMAW / GTAW / FCAW / SAW / laser / etc.
• Additive-manufacturing processes — full taxonomy
• Standards bodies — ASTM / ISO / IEC / IEEE / SAE / ASME / DIN / JIS / GB
• … and many more

Process

Same as Languages:

1. User confirms Tier 1 candidate set (or modifies it).
2. Parallel sub-agents write the deep notes in batches of 5.
3. Cross-cutting sections (units cheatsheet, materials-selection method, factor-of-safety guide) follow.
4. Tier 3 family indexes after Tier 1+2 are done.

Adjacent-library coverage

• Robotics library applies these foundations to robotic systems.
• Languages/Tier3 catalogues description-languages for many engineering domains (IFC for construction, gbXML for energy, EnergyPlus IDF for thermal, IEC 61850 SCL for power utilities, etc.) — already complete.