Plans are used for a number of purposes:
To develop a design idea into a coherent proposal
To communicate ideas and concepts
To enable the RBC to construct the project
As a record of the completed work
WHAT WE WILL LEARN:
We will lean how to read the following:
Site Plans and Civil Drawings
Mechanical, Electrical and Plumbing Drawings
Exterior closure and ﬁnishes
The Plans consists of multiple different views, such as:
Site Plan Drawings: The “AS” sheets.
Architectural Drawings: The “A” sheets.
Structural Drawings: The “S” sheets.
Mechanical Drawings: The “M” sheets.
Electrical Drawings: The “E” sheets.
Plumbing Drawings: The “P” sheets.
The Architectural Plans contain many other details as follows:
Speciﬁcations and Notes.
THE SITE PLAN
A Site Plan is a speciﬁc type of plan, showing the whole context
of a building or group of buildings. A site plan shows property
boundaries and means of access to the site, and nearby structures if
they are relevant to the design. Within the site boundary, the site
plan gives an overview of the entire scope of work. It shows the
buildings (if any) already existing and those that are proposed, usually
as a building footprint; roads, parking lots, footpaths, hard landscaping,
trees and planting. For a construction project, the site plan also needs
to show all the services connections: drainage and sewer lines, water
supply, electrical and communications cables, exterior lighting etc.
ARCHITECTURAL DRAWINGS: THE “A”
An architectural plan is a plan for the design, and the
documentation of written and graphic descriptions
of the architectural elements of a building project
including sketches, speciﬁcations drawings and details.
MECHANICAL DRAWINGS: THE “M”
Mechanical systems drawings are a type of technical
drawing that shows information about heating,
ventilating, and air conditioning. That is the HVAC
section of the drawings.
ELECTRICAL DRAWINGS: THE
An electrical drawing, is a type of technical drawing
that shows information about power, lighting, and
communication for an engineering or architectural
project. Any electrical working drawing consists of
"lines, symbols, dimensions, and notations to
accurately convey an engineering's design to the
workers, who install the electrical system on the job.
EXAMPLE OF A BASE OF WALL DETAIL
This is an example of a “detail” from the plans. It takes a section of the
building, (i.e., the base of the block wall), and gives you all the details of
what you need to start the masonry wall including “notes” and
“speciﬁcations.” The PC must read these notes and understand them or
get help from the journeyman. This would be the same procedure for
every “detail” and every “note” on the plans.
EXAMPLE OF A CONCEPTUAL WALL SECTION DETAIL
This wall section gives you an idea of the purpose of a wall section and with the person there
you can see it in perspective.
EXAMPLE OF A PARAPET WALL SECTION
A Detail takes a part of a section of the building and gives you all the details and notes needed to
complete that element of the building. The PC must read all the notes and understand them. If he
does not understand the details, that is OK. (No one knows the technical aspects of every trade).
However, he then must go over the notes with the journeyman of that trade so they both
recognize the speciﬁcations and complete the building according to the criteria of the plans.
EXAMPLE OF A ELECTRICAL BLUEPRINT SYMBOLS
These notes will be found on the “Electrical” section of the plans. (The “E” sheets).
Here you will ﬁnd all the symbols relating to the electrical work for the project.
EXAMPLE OF A GENERAL STRUCTURAL NOTES
These notes will be found on the “Structural” section of the plans. (The “S” sheets). Here
you will ﬁnd all the structural notes relating to the block work, ﬁlling cells, the concrete,