Project description
Fill layers should follow the standard method: a bottom layer of coarse gravel and broken branches for drainage, a middle layer of untreated cardboard to suppress weeds from below, and a top growing medium mixing topsoil, aged compost, and peat moss in roughly equal parts. Please haul away the excavated sod and leave the bed ready for planting.
For the drip irrigation layout, run half-inch poly mainline tubing along the inside perimeter with quarter-inch emitter lines branching off every twelve inches, sized to reach separate planting zones for tomatoes and peppers on one end, root vegetables in the middle, and leafy greens on the other end. Tie the mainline into the outdoor spigot through a backflow preventer, an inline pressure regulator, and a battery-powered timer programmed for a short watering cycle each morning.
Rough timeline: framing and gravel base on day one and two, soil delivery and settling over the next two days, then irrigation plumbing, emitter placement, and timer setup to close out the job. Please bid with a materials list, your proposed lumber source, and photos of two or three similar raised beds you have completed before.