Technical Description-Section B_B.jpg

This is a technical specification drawing for a drainage pit structure, presented as Section B-B in cross-section view at a scale of 1/2" = 1'-0". The drawing illustrates a concrete pit system with dual configurations: a control pit measuring 12'-8" outside dimensions (11'-0" inside) and a non-control pit measuring 10'-8" outside dimensions (9'-0" inside), both 5'-6" in depth.

The specification includes three pipe penetrations detailed in the header table: fresh air intake and air exhaust lines, both utilizing 10" diameter Schedule 30 seamless steel pipe, and an engine exhaust line using 4" diameter Schedule 30 seamless steel pipe. The pit contains a sump measuring 1'-6" x 2'-6" x 1'-3" with a 3" pipe sleeve for sump pump discharge. Supporting structural details include a 3/4" x 3/4" continuous chamfer around the pit perimeter, a C1 1/2" PVC drain from the performance vault, continuous 6" water stop construction joints, 10" fairlead tubes to runway, reinforcement notation (No. 5 @ 12" typical, No. 6 @ 6"), a deflector sheave with anchor bolts, and specific bolt patterns (No. 5 @ 15" lap @ 30" and No. 3 @ 6"/9"). The drawing references additional documentation including Sheet #15 for additional details.