introduction Box Section Standard Sizes Precast reinforced concrete box sections are manufactured under high quality plant Precast The boxes are produced with bell and spigot controlled conditions. concrete box sections are designed to meetjoint ends similar job to concrete pipe.specific requirements and are manufactured under factory controlled conditions employing the latest in dry cast manufacturing technology. Precast box sections are the are seven standard box sizes ranging from 1200 Within Lafarge, there logical solution to problems of restricted head mm in span and 600 mmroom, minimum cover, limited2400 mm in rise.excessive below rise to 3000 mm in span and trench width or The table over fills, and each respective size jacking under roads outlines the dimensions for can be designed for available. without traffic interruption. concrete pipe daRd ConCRETE box sECTIons stormwater treatment technologies box sections Box Size Span x Rise 1200 x 600 Standard Length 2000 Side Wall Thickness 125 125 200 200 200 250 175 Slab Top Wall Thickness 190 190 Bottom Wall Thickness 150 Haunch 125 125 175 200 250 200 250 Plug/Top/Base Slab Thickness 300 300 300 300 300 300 300 Approximate Storage Volume (m3) 1.35 2.05 4.15 5.60 8.35 14.30 14.15 1200 x 900 Bottom 2000 de Wall Top Wall 1800 x 1200 Wall 2000 Haunch ckness Thickness Thickness 2400 x 1200 2000 125 190 x 1800 150 2000 125 2400 Plug/Top/Base 200 Thickness 300 300 300 300 300 300 300 200 200 200 250 Approximate 150 Storage 175 Volume (m3) 200 1.35 200 2.05 200 250 4.15 125 190 x 2440 2440 3000 200 x 2400 150 175 200 200 200 250 2440 2000 125 175 200 250 200 250 175 200 200 200 200 250 5.60 manhole and catch basin material 8.35 14.30 14.15 200 200 250 box sizes with the exception of those highlighted in italics in the table above. nd span refer to page 22 for details. LAFARGE PIPE eMANUAL PAGE 3