C5_5__Attachment_1_-_Reference_Diagram.pdf

This is a technical drawing/engineering document for a Folsom Power Plant steel penstock, specifically detailing bends and expansion joint nozzles. The document contains multiple cross-sectional views and detailed specifications for the construction of large-diameter steel pipe infrastructure used in hydroelectric power generation.

The drawing includes detailed technical specifications for several critical components: vertical and longitudinal welds, reducing bends with specific angle measurements and dimensions, an 8-inch nozzle for drain and service connections with flange specifications, and an 18-inch bypass and filling line connection. Each section provides precise measurements, material specifications (including chromium steel cladding at 3/16-inch thickness), and assembly instructions. The document references additional technical drawings and specifications (such as Drawing 485-2-67) and includes installation notes. The title block identifies this as drawing number 485-D-66, with document control information including signatures and approval dates. This appears to be a historical technical specification document related to federal water resource infrastructure development, containing the engineering details necessary for fabrication and installation of major penstock components in a hydroelectric facility.