Master Specifications

 Master Specifications, Version 2.1

Master Specifications, Version 2.0, 01-01-2011

Supplemental Specifications, Provisional Specifications – See below

Standard Detail Drawings


PC-756: Rehabilitation of Primary Circular Clarifiers No. 13 through 16 at the Detroit Wastewater Treatment Plant.

PC-780: Sludge Pumping Stations No. 1 and 2 Rehabitation at the Detroit Wastewater Treatment Plant.

PC-786: Rouge River Outfall No. 2 (RRO-2) Segment 1 – Detroit Wastewater Treatment Plant modifications.


2/6/12 – GLWA is currently reviewing 2004 Construction Specification Institute’s (CSI) numbering for future MS update.



PC-756 Supplemental Specification Provisional Specification
PC-776 Supplemental Specification Provisional Specification
PC-780 Supplemental Specification Provisional Specification

Master Specifications:

GLWA’s Master Specifications are the detailed engineering specifications used in project contract documents as a standard by which all projects are developed. Typical contract documents will include FORMSPEC (for bidding requirements, contract forms, conditions, etc.), Master Specifications (for engineering specifications applicable to the type of work, e.g. electrical, concrete, finishes, etc.), Contract Drawings (with the details of the design), and Standard Details (for frequently utilized details such as manholes, soil erosion control, fencing, etc.). In addition to the typical contract documents, Supplemental and Provisional Specifications may be utilized.

Supplemental Specifications:

GLWA’s Supplemental Specifications are engineering specifications that provide information on frequent and accepted adaptations to the Master Specifications, or additional previously-unpublished engineering specifications. Supplemental Specifications are not available in print, but are available on this website. Supplemental Specifications may be incorporated into the next printing of the Master Specifications.

Provisional Specifications:

Provisional Specifications are designed to be used on future GLWA projects to augment or change information contained in the MS for specific applications. Provisional Specifications that are utilized should be communicated to Parvez S. Jafri of GLWA to collect augmentation or changes. These provisional specifications will be published on the web site, as they are made available, to document applications of the MS between GLWA and project users.


CONTACT: Parvez S. Jafri – (313) 297-0200

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