2024 Greenbook: Standard Specifications for Public Works Construction

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First published in 1967, Standard Specifications for Public Works Construction (popularly known as the “Greenbook”) eliminates conflicts and confusion among the plans and specifications used by local public agencies.  It is revised every three years.

It is the work of an active volunteer committee of professional agency members who are thoroughly versed in the changing technology and advanced thinking of the construction industry. 

The new 2024 Edition brings the specifications in the "Greenbook" completely up to date in accordance with best practices and the latest technologies. Arranged in major sections, the "Greenbook" covers General Provisions for public works construction as well as detailed specifications covering: 

• Construction Materials including rock materials, concrete, mortar, pipe, water and sewer valves, engineering geosynthetics, and bedding and backfill materials. 
   
• Construction Methods including earthwork, subgrade preparation, treated materials and placement of base materials, roadway surfacing, metal fabrication and construction, pile driving and timber construction, open trench conduit construction, jacking and tunneling, and microtunneling 
   
• Existing Improvements including protection and restoration, manhole adjustment and reconstruction, cold milling, and micro-milling 
   
• Pipeline Systems Rehabilitation including service lateral connection sealing 
   
• Temporary Traffic Control including access and temporary traffic control for construction and maintenance work zones 
   
• Street Light and Traffic Signal Systems including materials and construction 
   
• Landscaping and Irrigation including materials and installation. 

In addition to numerous corrections and clarifications, the 2024 Edition includes new and revised specifications for:  

• Composite Manhole Frames and Covers  
• Grey Iron & Ductile Iron Casting 
• Rock Slope and Erosion Protection 
• Adding RAP Aggregate to Slurry, Microsurfacing, and Chip Seals 
• Tire Rubber Modified Asphalt Concrete (TRMAC) 
• and much more. 

 The "Greenbook" is published every three years under the oversight of Public Works Standards, Inc. (PWSI). The members of PWSI include the American Public Works Association (APWA), Associated General Contractors of California (AGCC), Engineering Contractors Association (ECA), and Southern California Contractors Association (SCCA),