🐾 Cat Ramp Cut Sheet Generator

A folding window-sill ramp with flat side wings — triangular panels that fan gently from the ramp edge down to the floor, flush against the window wall, so there's no gap and no cliff for a recovering cat to leap from. Adjust any dimension; the 3D view, cut list, takeoff and diagrams update live. Print or save to PDF for the shop.

Core dimensions

Sill width (ramp width)

Sill height off ground

Ramp length (sill → floor, along slope)

The sloped length of the deck (the hypotenuse).

Materials

Deck / wing sheet thickness

e.g. ¾″ plywood = 0.75.

Support

Holds the top up with…

Support height at top of ramp

Usually the sill height — holds the top end up at the sill.

Foot splay (each leg, horizontal)

A-frame only — how far the feet kick out. Bigger = steadier, bulkier fold.

Leg / post stock: width × thickness

× in

e.g. a ripped 1×2 ≈ 1.5 × 0.75. Posts may want something beefier (2×2).

Add floor runners (post foot → ramp base)

Keep the post feet from kicking out. Optional if the hinge + sill hook hold things.

Sill hook

Add a sill hook cleat

Hook lip drop over sill

A cleat at the top that hooks over the sill edge so it can't slide.

Side wings (flat fillets)

Include side wings

Wing reach (sideways at the wall)

How far each wing fans out to the side at the sill. Bigger = gentler surface but wider footprint. It tapers to nothing at the base.

Traction cleats

Add grip cleats across the deck

Cleat spacing (center to center)

Cleat stock: width × thickness

× in

Carpet

Carpet the deck (and wings)

Carpet roll width

Width of the roll/runner you'll buy (runners ≈ 27–36″, broadloom ≈ 144″). Covers deck + both wings.

3D view

ramp deck wing (flush to wall + floor) window wall window support legs/posts

Shop diagrams

Side elevation (slope + support)

Wing cut pattern (×2, mirror)

Plan / footprint (top down)

Support detail

Cut list

Qty	Part	Material	Dimensions	Notes

Materials takeoff

Material	Need	Buy (suggested)

Estimates carry a modest waste factor — buy a little extra.

3D view

Shop diagrams

Side elevation (slope + support)

Wing cut pattern (×2, mirror)

Plan / footprint (top down)

Support detail

Cut list

Materials takeoff

Build notes