Two-chamber shelter for four adult cats, with one chamber per pair and two independent entrances.
Capacity4
Width1200 mm
Depth700 mm
Insulation50 mm
model v1.0.0compiler v1.8.0plan c1d4dad2334114deWINTER COLDreference outdoor scenario, not a rating -10 °C
DATA_VALIDATED does not mean a physical prototype has been tested. That claim appears only after real physical validation.
Geometry
Dimensions and construction
Compiled drawing sheetNordic Quad Winter
MODELcat-quad-winter-01
VERSIONv1.0.0
STATUSDATA VALIDATED
PLAN IDc1d4dad2334114de
This sheet is compiler-derived. Solid dimensions and chambers are geometry; framing/hardware elements marked PROVISIONAL remain design assumptions until engineering review.
External size
1200 × 700 × 650 mm
Rear height
590 mm
Ground clearance
140 mm
Entrance
150 × 180 mm × 2
Sill above finished floor
36 mm
Chambers
2
Wall thickness
71 mm
Floor assembly
74 mm
Roof assembly
71 mm
Roof vertical projection
70.7 mm
Clear wall height front/rear
505 / 445 mm
Roof angle
4.9°
Validation ladder
What is actually validated
Status is not promoted because the application looks finished. Each next level requires a new kind of evidence.
Current stateDATA VALIDATED
Model versionv1.0.0
Compilerv1.8.0
Plan IDc1d4dad2334114de
Sources in compiled plan10
01
Data and compiler gateDATA_VALIDATED
Schema, sources, assemblies, openings, stock fit, framing/hardware invariants and calculation outputs must remain internally consistent.
CURRENT
02
Geometry validatedGEOMETRY_VALIDATED
Requires recorded software and visual verification of 3D/drawings/cut parts, not merely successful data loading.
NOT VALIDATED
03
Engineering reviewENGINEERING_REVIEWED
Provisional framing, fastener, moisture, thermal and service details must be reviewed for the actual construction method.
NOT VALIDATED
04
Physical prototypePROTOTYPE_BUILT
A physical example exists with documented deviations, photographs and a final safety inspection.
NOT VALIDATED
05
Field validationFIELD_TESTED
The model has documented real-world use. Even this status is not a universal safe-temperature guarantee.
NOT VALIDATED
Thermal
Transparent thermal estimate
Steady-state envelope transmission estimate. It does not include a validated entrance-infiltration model and is not a temperature guarantee.
Wall U · nominal0.55 W/m²K0.50–0.61 W/m²K
Floor U · nominal0.54 W/m²K0.48–0.59 W/m²K
Roof U · nominal0.56 W/m²K0.51–0.62 W/m²K
ΔT comparison20 Kmethod v1.2.0
Nominal envelope transmission38 W34–42 W
Wall Rsi0.13 m²K/Whorizontal heat flow
Roof Rsi0.10 m²K/Wupward heat flow
Floor Rsi0.17 m²K/Wdownward heat flow
Rse0.04 m²K/WISO 6946 · v1.2.0
ΔT explorerScenario temperature difference
Nominal transmission38 W
Sensitivity band34–42 W
This only scales steady-state transmission through wall/floor/roof. ΔT is not an outdoor temperature or guaranteed indoor temperature; infiltration, wind, framing thermal bridges and other effects are not added.
Current model limitations
No validated entrance infiltration model
No validated airflow model for the provisional ventilation insert zones
No wind pressure model
No animal metabolic heat credit
No transient heat-storage model
No 2D framing thermal-bridge correction
No explicit corner/end-grain edge-return thermal-bridge model
Ventilation · PROVISIONAL
Reserved high-rear zones
These are not prescribed vent-opening dimensions. The compiler only reserves zones that avoid provisional framing; the actual cutout and net free area remain specific to the selected adjustable vent insert and physical validation.
StrategyHIGH REAR
Zone per chamber1
Top clearance45 mm
Actual openingTBD by insert
Chamber 1105 × 40 mm
Center X
176 mm
Bottom above finished floor
360 mm
Status
ASSUMPTION
Chamber 2105 × 40 mm
Center X
711 mm
Bottom above finished floor
360 mm
Status
ASSUMPTION
V1 model boundary
The zone is a coordination reserve, not proof of adequate ventilation. After construction, condensation, odor/moisture and local drafts must be checked; the actual vent insert or its setting may need adjustment.
Fabrication BOM · compiler output
Fabrication materials
Exterior plywood · 12 mm4.75 m²net area of actual cut geometry
Exterior plywood · 9 mm2.33 m²net area of actual cut geometry
XPS insulation · 50 mm3.25 m²net area of actual cut geometry
Sheet planning · deterministic V1
Sheet layout
Actual part geometry is shown with a solid outline while the dashed rectangle is the conservative packing envelope. V1 still packs trapezoids by bounding box, so it is not polygon-optimal nesting. Material % measures actual part area; envelope % is the space reserved by the algorithm.
2500 × 1250 mm · kerf 3 mm · margin 10 mm
Plywood 12 mm
3sheets / boards
Sheet 155% material · 56% envelopeSheet 289% material · 90% envelopeSheet 38% material · 9% envelope
2500 × 1250 mm · kerf 3 mm · margin 10 mm
Plywood 9 mm
1sheets / boards
Sheet 174% material · 77% envelope
1250 × 600 mm · kerf 2 mm · margin 5 mm
XPS insulation
7sheets / boards
Sheet 156% material · 56% envelopeSheet 256% material · 56% envelopeSheet 356% material · 56% envelopeSheet 456% material · 56% envelopeSheet 570% material · 70% envelopeSheet 664% material · 64% envelopeSheet 774% material · 74% envelope
Local price profile
Cost estimate
Quantities come from the model. Prices are not fabricated: enter what you actually pay locally and the estimate stays in your browser.
Plywood 12 mmSheet count from the 2500 × 1250 mm nesting layout.
3 sheetRSD 0
Plywood 9 mmSheet count from the 2500 × 1250 mm nesting layout.
1 sheetRSD 0
XPS 50 mmBoard count from the planning stock size 1250 × 600 mm. Verify dimensions with the local supplier.
7 sheetRSD 0
Roof waterproofingFull sloped roof panel area + 15% allowance for overlap and waste.
1.36 m²RSD 0
Exterior wood protectionExterior wall and floor-underside area + 10% allowance. Coat count and coverage depend on the selected non-toxic exterior product.
2.85 m²RSD 0
Adjustable ventilation insertsOne selected insert for each PROVISION zone. Final cutout and net free area must follow the selected product data sheet.
2 itemRSD 0
Timber framing 30 × 50 mm + base 45 × 45 mmTotal framing schedule length + 10% allowance. Profiles remain PROVISIONAL until engineering review.
23.64 mRSD 0
Base isolation pads / feetOne suitable isolation foot or pad below each V1 vertical support so timber does not bear directly on wet ground. Product selection, anchorage and capacity depend on the actual site and substrate.
4 itemRSD 0
Exterior corner weather trimPlanning length for the four vertical exterior corner edges. Profile, sealing and overlap must be compatible with the selected exterior sheathing and finish system.
1.90 mRSD 0
Exterior wood-panel fastenersV1 estimate uses approximately 150 mm edge spacing and 300 mm field spacing as a reference starting pattern. Final diameter, length and schedule remain subject to engineering review.
367 itemRSD 0
Exterior roof hingesCount is derived from roof width. The hinge axis sits on the front-wall line, inset from the outer front edge by the roof overhang. Verify final hinge type and load capacity before ENGINEERING_REVIEWED status.
3 itemRSD 0
Roof latchesIntended to secure the service roof against wind uplift. Latches sit on the rear-wall line, inset from the outer runoff edge by the rear overhang so the exterior drip path remains clear.
2 itemRSD 0
Roof edge / drip protectionPlanning length for the full roof-panel perimeter. Final profile, layer order and low rear-edge detail must follow the selected roofing system.
4.45 mRSD 0
Service-roof weather sealLength is derived from shelter perimeter; final seal profile depends on the joint detail.
3.80 mRSD 0
Estimate from entered pricesRSD 0
Sheet, XPS, framing and hardware quantities come from the compiler. The estimate still excludes delivery, tools, labor, local taxes and unforeseen losses beyond the stated allowances. PROVISIONAL and product-specific items remain explicitly labeled.
Operation & welfare
How to use the model in winter
Construction alone is not enough. Placement, moisture, bedding, weather and routine inspection directly affect real-world shelter performance.
Place the shelter in a protected location away from direct wind and predator hazards.
Keep it elevated and dry; the entrance should not sit at wet-ground or snow level.
For community cats, use straw as winter bedding; towels and blankets can retain moisture.
Multiple entrances add an escape route but also increase cold-air exchange, making entrance protection more important.
After snow or heavy rain, check the entrance, bedding dryness and shelter stability.
Watch for condensation and moisture near the upper zone. The PROVISION ventilation zone is not a predefined opening; the selected insert should be adjusted so it does not create a direct local draft.
side-outerExterior side panelstrapezoid profile · The side wall fits between the full-width front and rear walls. Clear length 558 mm; front inner edge 499 mm; rear inner edge 451 mm.558 × Hf 499 / Hr 451 × 12 mm2
xps-side-a-r1c1Side-wall XPS Axps · Final top edge follows the roof slope down to 451.3 mm.558 × 499.2 × 50 mm1
xps-side-b-r1c1Side-wall XPS Bxps · Final top edge follows the roof slope down to 451.3 mm.558 × 499.2 × 50 mm1
xps-floor-r1c1Floor XPSxps1200 × 350 × 50 mm1
xps-floor-r2c1Floor XPSxps1200 × 350 × 50 mm1
xps-roof-r1c1Roof XPSxps1200 × 352 × 50 mm1
xps-roof-r2c1Roof XPSxps1200 × 351 × 50 mm1
dividerInterior dividertrapezoid profile · Front clear edge 499.2 mm; rear clear edge 451.3 mm. Cut the top edge to the compiled roof slope.558 × Hf 499.2 / Hr 451.3 × 12 mm1
Framing · PROVISIONAL
Framing and support schedule
Lengths are derived from model geometry. Frame and base profiles are a V1 design assumption and remain explicitly PROVISIONAL until engineering review and physical validation.
Quantities and geometry are a V1 workshop plan. Fastener spacing uses an APA reference pattern as a conservative starting point, but it is not a certified fastening design for this product.
Edge spacing≈ 150 mm
Field spacing≈ 300 mm
Panel joint gap3 mm
Roof slope4.9°
Runoff edgerear
Rear drip edge1.34 m
Hinge axis from front edge90 mm
Latch axis from front edge793 mm
IDItemQuantityStatus
base-isolation-padsBase isolation pads / feetOne suitable isolation foot or pad below each V1 vertical support so timber does not bear directly on wet ground. Product selection, anchorage and capacity depend on the actual site and substrate.4 pcsASSUMPTION
corner-weather-trimExterior corner weather trimPlanning length for the four vertical exterior corner edges. Profile, sealing and overlap must be compatible with the selected exterior sheathing and finish system.1.90 mASSUMPTION
panel-fastenersExterior wood-panel fastenersV1 estimate uses approximately 150 mm edge spacing and 300 mm field spacing as a reference starting pattern. Final diameter, length and schedule remain subject to engineering review.367 pcsASSUMPTION
roof-hingesExterior roof hingesCount is derived from roof width. The hinge axis sits on the front-wall line, inset from the outer front edge by the roof overhang. Verify final hinge type and load capacity before ENGINEERING_REVIEWED status.3 pcsASSUMPTION
roof-latchesRoof latchesIntended to secure the service roof against wind uplift. Latches sit on the rear-wall line, inset from the outer runoff edge by the rear overhang so the exterior drip path remains clear.2 pcsASSUMPTION
roof-edge-weathering-profileRoof edge / drip protectionPlanning length for the full roof-panel perimeter. Final profile, layer order and low rear-edge detail must follow the selected roofing system.4.45 mASSUMPTION
roof-weather-sealService-roof weather sealLength is derived from shelter perimeter; final seal profile depends on the joint detail.3.80 mGEOMETRY
Steps follow the model configuration. Heated variants automatically include a dedicated step constrained to purpose-built equipment.
0 / 9steps completed
Build the raised base
Assemble the compiled grid of vertical supports and horizontal runners. Use a suitable isolation foot/pad below each support to keep timber off wet ground; adapt anchorage and bearing details to the actual site.
Assemble the insulated floor
Enclose the insulation between lower and interior floor panels so the animal cannot access it.
Assemble walls to the compiled joinery plan
Front and rear walls remain full width while side walls fit between their inner planes. Use the compiled side lengths/heights and entrance dimensions; do not extend side panels through the corner zones.
Weather-protect the four exterior corner edges
Install compatible exterior corner trim/sealing over the vertical joints so cut panel edges are not exposed to water. The selected trim and overlap must follow the exterior finish system.
Reserve the high-rear ventilation insert zones
Transfer the compiled PROVISIONAL zones to the rear wall and keep them clear of studs. Do not cut the final opening until a specific adjustable vent insert is selected; its cutout and net free area are product-specific.
Install insulation and interior linings
Dry-fit the XPS, enclose it with the interior linings and confirm that no insulation edge is accessible to the animal.
Install interior dividers
Position dividers on the axes between the corresponding entrances, verify stability and seal every sharp edge.
Install roof and waterproofing
The roof falls from front to rear, making the rear edge the natural runoff edge. Select a roofing system that explicitly permits the compiled slope, follow its layer/overlap instructions and detail edge/drip protection so water sheds behind the shelter, away from entrances.
Perform the final safety inspection
Check stability, sharp edges, water ingress, ventilation, entrances and interior dryness.
Provenance
Sources and limitations
A source supports a method or welfare guideline; it does not turn this specific model into a certified product. Physical validation has a separate status.
Notes stay only in this browser and are tied to the exact Plan ID. Completing the worksheet does not promote the public model state - it creates an evidence trail for future physical validation.
MODELcat-quad-winter-01
MODEL VERSIONv1.0.0
COMPILERv1.8.0
PLAN IDc1d4dad2334114de
Recorded checks0 / 9
This worksheet is not a certificate, veterinary assessment or automatic FIELD_TESTED state. The published validation state changes only after separate review of real evidence.