Slab drain

Slab Drain Drawer

Two Abutments + Slab (Elevation) Single‑file HTML SVG + JS

Inputs (m unless stated)

Clear opening (span) S

Stem (dirty wall) height H

Cap thickness T_cap

Top width W_top (each abut.)

Front batter B_f (H per 1V)

Back batter B_b (H per 1V)

Shoe thickness T_shoe

Shoe proj. front P_f

Shoe proj. back P_b

Slab thickness T_slab

Slab overhang beyond inner faces

Road level above cap (D_sup)

Batter is horizontal per 1.0 m vertical (e.g. 0.20 ⇒ 1V:0.20H). Abutments are mirrored about the centerline.

Elevation

Abutments Slab Dimensions

Auto‑scaled to fit. Geometry only (no design checks). Use download buttons for SVG/PNG exports.

Notes & Conventions

• Origin for geometry is top‑left; +Y downward. Units are metres.
• Abutments are identical and mirrored. Top width refers to stem thickness right below cap.
• Road level is drawn above the cap by D_sup. Slab sits on cap top and extends across the clear opening with optional overhang Ovh.
• Shoe sits below each stem with given thickness and projections.