What’s included in a set of bid documents?
Today we’re going to introduce the basic components in a set of bid documents.
We often just say “plans” to mean an entire project deliverable. However, a set of construction documents usually includes more than just plans.
A complete set usually includes plans and specifications, and sometimes narratives, product data, reports, product samples, a rational analysis, or supporting calculations.
A set of plans is usually organized by discipline, often starting with general project overview, civil, architectural, structural, mechanical, plumbing, electrical, and sometimes fire protection or other specialties.
The physical set of drawings themselves contain a handful of elements that are all intended to communicate scope for a project.
The drawings usually include a symbol legend, general notes, details, plans, plan notes and call outs, sections, and elevations, one line riser diagrams, schedules, and specifications.
Usually everything that you will see on a set of plans falls into one of those categories.
Within each of these disciplines we will see each of the following elements.
Let's start with a symbol legend.
A symbol legend translates what is drawn on a plan to what it means.
If a total stranger is looking at your plans and is entirely unfamiliar with how you style things, the symbol legend would be their cypher to understand what you are trying to convey.
Next are General Notes.
General Notes are a series of text instructions that apply globally across the entire discipline.
These are usually found on the first sheet of each discipline.
We then have Details.
Details are provided for visual clarification on a specific topic.
They are usually often used for typical or repetitive items.
Next, we have Schedules which provide a cleanly organized way to tabulate information.
These are popular with mechanical drawings, which makes sense because mechanicals are kind of squares.
OK, just kidding.
We are used to seeing schedules for sprinklers symbols in quantities on shop drawings, but schedules can also very useful to convey sprinkler design criteria or organize equipment information.
We then have one-line and riser diagrams.
One-line and riser diagrams are important for relating how a system operates in a big picture sense.
They are also helpful to understand how a system works in just a single snapshot.
These are typically not to scale but are schematic in nature to show again how a system functions in the big picture.
A fire alarm riser diagram is a common application for us here.
Then there are what we typically think of in construction documents as plans themselves.
Plans can include floor plans, reflected ceiling plans, maybe a site plan, or an enlarged plan.
These provide clarification that is specific to a location and shown in two-dimensions.
It's often consumes the majority of the content on our sheets.
On the plans themselves we get plan notes and call outs.
This could be directly on a drawing with text, or could be a keynote or callout that matches up with text notes, details, or sections elsewhere in the documents.
We then have sections and elevations, which communicate a concept that is in the vertical dimension.
They are used when there is a lot of vertical action going on and the plans themselves cannot show enough detail to communicate a concept.
Something relatively new in the Fire Protection space are Isometrics.
Isometrics are intended to convey a big picture concept with a quick glance and relate the horizontal parts of a system to the vertical parts of a system.
They are often helpful to get a sense for the three-dimensional nature of a system.
With the advent of building information modeling, Isometrics are significantly easier to include now in drawing packages than they ever have been before.
Lastly, we have specifications.
Specifications are a written description for what needs to take place in a scope of work.
Specs are organized by Division, then Section, and then Parts.
The Division relates to the discipline. Suppression is often Division 21, alarm is in Division 28.
Sections generally relate to a system type or component.
Then within the Sections there are three parts.
Part 1 – General, which break out references, applicable codes and standards, and qualifications.
Part 2 contains product specific information. For instance, what products are acceptable for a project, or requirements for products that are used on a project.
Part 3 typically includes requirements for execution of a project, or how the components are to be installed as well as tested.
We'll get into each of these topics related across the board with plans and specs in more detail with tips on what makes a good set of construction documents in future videos.
I'm Joe Meyer, this is MeyerFire University.
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