Best Practices for Project Management, Design, and Construction of ...

• Identify any equipment that requires seismic certification and/or essential power.
• Identify equipment mounting detail locations.
• Identify water temperatures and high limit alarm locations.
• Provide information indicating domestic hot water distribution temperatures per CPC
Chapter 6.
• Identify medical gas zone valve and alarm locations.
• Identify areas where special precaution piping is required per CAN 5-311.9.
• Identify roof drainage calculations.
• Identify Domestic Water sizing criteria.
• Indicate wall ratings and locations of fire/smoke dampers.
• Provide validation that existing equipment and distribution services have the necessary
capacity during remodel or expansion projects.
Information Plans
Various types of drawings are necessary to convey essential information such as Schedules,
Piping Diagrams, Mounting Details and Control Diagrams.
The title page should clearly define the project location and vicinity by graphical means. The
applicable building codes should be stated. A drawing index is recommended to clearly identify all
the unique systems that may be involved.
Site Plans
If the project involves outside (exterior) plumbing work outside the normal 5’-0” from the building,
then it should be clearly shown in the site plan documentation.
Floor Plans
It is recommended to follow the architectural floor plan nomenclature for sheet order and sheet
numbering in order to simplify the logical sequence of cross-coordination with all trades
(disciplines). Traditionally, the floor plans provide the documentation of the architectural features
as a shaded background and the plumbing devices are prominently shown on top of these
locations. However, it is important to clearly identify room names and wall ratings for OSHPD
review.
Enlarged Drawings
The drawings that contain a significant amount of information require much more space to clearly
communicate the scope of work. These drawings tend to be the ¼” scale or larger, in order to
show exact placements and or intent. In addition, these drawings may comprise several
elevations to demonstrate the intent.
Organization and Approach
The Plumbing drawings represent work that is closely coordinated with many other disciplines
such as architectural, structural, electrical, and mechanical. The need to have very well
coordinated drawings is equally important with all disciplines. Based on many experiences, the
last minute little changes from one discipline cause large issues for another discipline.
(OSHPD Best Practices) Page 51 DRAFT FINAL, Sept. 2011