ECO-NOMIC Drawing Archive
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Note: Drawing number describes drawing
GTGV=gravity vaults, GTGG=gravity gravel
1, 2, 3, 4, etc =Number of Trenches in System
L, R, S, T, W= Orientation of Trench From Tank (left, right, straight, tee, hybrid)
D, S, T, X, = Depth of Drainfield (deep, shallow, treatment, special-depth-condition
Last letter is Drawing Number A, B, C, etc
vault designs using one trench only - deep and shallow designs
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vault designs using two trenches only - deep and shallow designs, treatment designs with sand media below the trenches and special designs with specific maximum depth conditions
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vault designs using three trenches only - deep and shallow designs, treatment designs with sand media below the trenches and special designs with specific maximum depth conditions
vault designs of various types and arrangements using four trenches only
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vault designs of various arrangements using more than 4 trenches
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gravel media designs using various arrangements of trenches and various sizes - number indicates square foot area of drainfield 20 = 200 sf, 36 = 360 sf, deep and shallow designs
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These thumbnails only represent a sample of the drawings available on the gravity drainfield CD. Site Plans and Construction Details from the CD are not shown on this page.