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GROUND FLOOR PLAN SCALE 1:50 · ALL DIMENSIONS IN MILLIMETRES · NOTE: 28° PITCH SPECIFIED — SEE SHEET 2 OUTDOOR SHOWER 1200 × 1200 hardwood deck COMPOSTING WC 1500 × 1500 · ~15m E/downhill path path 3 STEPS VERANDAH 4000 × 2000 DOOR 820 × 2040 WIN 900 WIN 900 WIN 600 FRG STOVE UP STAIR 700W · 45° LOFT ABOVE queen bed + storage GUARDRAIL EDGE ↕ 1000h LIVING / DINING open to ridge KITCHEN A A 4000 6000 2000 3000 — LOFT ZONE 550 N VERANDAH = NORTH 0 1m 2m 3m 4m 5m SCALE 1:50 GENERAL NOTES: 1. All wall framing 90×45 MGP10 studs at 450 crs. Double top plate all walls. 2. Floor joists 100×50 F7 at 450 crs. Subfloor 19mm H3 particle board glued + screwed. 3. Loft joists 140×45 LVL at 400 crs — confirm with engineer for 400kg+ live load. 4. Stump posts 125×125 H5 hardwood in concrete, min 500mm below NGL. 5. Outbuilding positions indicative — adjust to suit site drainage and prevailing wind. 6. ROOF PITCH: 28° specified to achieve adequate loft headroom for 1900mm occupant.
BUSH CABIN
GROOMSVILLE BLOCK — WORKING DRAWINGS
DRAWING
Ground Floor Plan
SCALE
1:50 (print A3)
SHEET
1 of 3
DATE
April 2026 Rev A
NOTE
Owner-builder reference only. Not for DA. Verify all dims on site before construction.
ELEVATIONS SCALE 1:50 · 28° ROOF PITCH · ALL DIMS MM NORTH ELEVATION front — looking south 300 STUMPS — H5 hardwood in conc. 28° LOUVRE VENT NGL ±0 FFL +300 VER. EAVE +2700 PLATE +3000 RIDGE +4082 4000 600 600 IRONSTONE WOODLAND GREY HARDWOOD POST Danish oil EAST ELEVATION looking west — south left, north right 900×900 900×900 NGL ±0 FFL +300 VER. EAVE +2700 EAVE +3000 6000 2000 VER. COLORBOND IRONSTONE SOUTH ELEVATION (REAR) Mirror of North elevation — no verandah — 600mm vent window centered NO VERANDAH WEST ELEVATION + MATERIAL SCHEDULE Mirror of East elevation — no verandah ROOFING: Colorbond corrugated iron · WOODLAND GREY · 0.42mm BMT WALL CLAD: Colorbond corrugated iron · IRONSTONE · 0.42mm BMT FASCIA/BARGE: 75×25 hardwood · NIGHT SKY painted GUTTER/DOWN: Colorbond quad gutter · NIGHT SKY · all down to 10,000L tank POSTS: Rough sawn hardwood · Danish oil finish (natural) DECK: 90×19 hardwood decking · oiled natural · 5mm gaps WINDOWS: Powdercoat black aluminium awning (preferred) or timber louvres UNDER-IRON: Anticon blanket R1.3 all roof areas — condensation control mandatory SUBFLOOR: Painted Night Sky · continuous mesh batten for pest exclusion HEADROOM NOTE (1900mm OCCUPANT): 28° pitch gives ridge at +4082mm FFL. Loft floor at 2000mm FFL. Clearance above loft floor: 2082mm at ridge. Position pillow toward center. Clearance at eave/wall: 700mm — feet-end of bed only. Acceptable. Loft-to-below clearance: 2000mm (standard kitchen height — good). Do NOT reduce pitch below 28° for 1900mm occupant. Gable louvre vents both N and S gable ends — critical for summer heat escape.
BUSH CABIN
GROOMSVILLE BLOCK — WORKING DRAWINGS
DRAWING
Elevations N, E, S + Schedule
SCALE
1:50 (print A3)
SHEET
2 of 3
DATE
April 2026 Rev A
SECTION A–A E–W CROSS SECTION THROUGH LOFT ZONE · LOOKING EAST · SCALE 1:40 A A CONCRETE FOOTINGS UNDER EACH STUMP FFL LOFT FL. 4000 3700 clear 600 OH 600 OH NGL ±0 FFL +300 LOFT FL. +2300 FGL PLATE +3000 RIDGE +4382 2000 CLR BELOW LOFT 2077 @ RIDGE ✓ 1900mm OCC. 700 AT EAVE 1000 GUARDRAIL R2.5 WALL BATTS in 90mm stud cavity R5.0 CEILING BATTS on loft floor joists ANTICON R1.3 under iron condensation control COLORBOND iron WOODLAND GREY 140×45 LVL loft joists @400 crs — ENG. CONF. 70×70 hardwood guardrail posts · top rail · infill @100 KITCHEN / LIVING 2000 clear ht. LOFT BED ZONE 700 at walls → 2077 at ridge SPECIFICATION SUMMARY ELEMENT SPECIFICATION STRUCTURE — FOOTINGS 125×125 H5 hardwood stumps in 300dia conc. Min 500mm below NGL Bearers 150×50 F7 or hardwood · on stump saddle brackets Floor joists 100×50 F7 MGP10 · 450 crs · blocked at mid-span Subfloor sheet 19mm H3 particleboard · glued + screwed to joists WALLS 90×45 MGP10 studs @ 450 crs · double top plate all walls Stud height 2700mm floor to top plate Wall cladding Colorbond corrugated iron IRONSTONE · 0.42mm BMT · over Anticon R1.3 Internal lining 9mm ply OR 85mm pine T&G boards · Danish oiled or raw ROOF Gable · ridge N-S · 28° pitch · 600mm eave all sides Rafters 140×45 MGP10 @ 600 crs · span 2600mm half-span Ridge board 190×45mm · full length cabin + overhang each end Roofing iron Colorbond corrugated WOODLAND GREY · over Anticon R1.3 blanket INSULATION See section left for placement Ceiling (on loft joists) R5.0 Bradford Gold or equiv. — DO NOT SKIMP Walls R2.5 wall batts 90mm — fit tight, no gaps Floor R1.5 Bradford Anticon foil-face DOWN between joists Under iron (wall + roof) Anticon blanket R1.3 — condensation control mandatory LOFT South 3000mm of cabin · full-width 4000mm · queen bed zone Loft floor height 2000mm above FFL — optimised for 1900mm occupant Loft joists 140×45 LVL F17 @ 400 crs · engineer confirmation required Loft deck 19mm T&G or ply · smooth finish (bare feet) Guardrail 1000mm high · 70×70 hardwood posts · max 100mm infill gaps Stair Fixed 45° stair 700mm wide · rope or timber handrail E side Headroom at ridge (28° pitch) 2077mm above loft floor at ridge ✓ suits 1900mm occupant POWER SYSTEM Solar 2 × 200W panels · roof mount N face · min 10° tilt Battery 2 × 100Ah 12V LiFePO4 in parallel = 200Ah / ~2.4kWh usable Controller Victron SmartSolar MPPT 40A · Bluetooth · VRM monitoring Inverter 600W–1000W pure sine · for laptop, Starlink AC fallback Starlink 12V direct adapter (bypasses inverter) · ~120Wh/day PLUMBING Water supply 10,000L poly tank → Shurflo 12V pressure pump → 15mm PEX internal Hot water Joolca HOTTAP 2.0 (~$400) · LPG gas · licensed gas fitter req. Drainage 40mm PVC greywater to garden bed / French drain · min 3m from cabin WC Nature Loo or Ozzi Kleen composting · vent pipe out outhouse roof WIRING 12V DC (owner can do) All lighting, fridge, Starlink, USB · Blue Sea fused distribution block 240V AC (licensed sparky) Sub-board with RCD off inverter · 1–2 GPO circuits only Cable sizing 4mm² fridge + Starlink · 2.5mm² lighting + USB · size up if in doubt CRITICAL BUILDER NOTES: 1. 28° pitch is non-negotiable for 1900mm occupant — do not reduce. 2. Loft floor at 2000mm FFL — do not raise (reduces loft clearance). 3. R5.0 ceiling insulation on loft joists before loft deck is laid. 4. Stair exits at loft — position toward CENTER of building for clearance. 5. Confirm loft joist sizing with engineer before fabrication. 6. Anticon under ALL iron — walls and roof.
BUSH CABIN
GROOMSVILLE BLOCK — WORKING DRAWINGS
DRAWING
Section A–A + Specifications
SCALE
1:40 section · NTS specs
SHEET
3 of 3
DATE
April 2026 Rev A