Measure the shed doorway height and ramp length needed
Check local building codes and permit requirements
Choose a ramp slope suitable for use and access
Select pressure-treated lumber, decking, fasteners, and gravel or concrete supports
Mark the ramp location and clear the ground
Level and compact the base area
Install concrete blocks, skids, or footings for support
Build a rectangular frame with treated lumber
Add cross supports and joists for strength
Attach decking boards or plywood to the frame
Secure the ramp to the shed floor or threshold
Add side curbs or edge boards to prevent slipping off
Install traction strips or non-slip surface material
Check that the ramp is level, stable, and properly aligned
Test the ramp with weight before regular use
Seal or stain the wood for weather protection
Inspect regularly and tighten or replace damaged parts