1 CONSTRUCTION BLUEPRINT READING EQUIPMENT SCHEDULES

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CONSTRUCTION BLUEPRINT READING

EQUIPMENT SCHEDULES

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Equipment schedules for construction drawings provide specific information in an organized manner similar to that of presenting general notes or lists of materials, building components (doors, windows, etc.), equipment, etc., in a drawing in tabulated form.

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Schedules provide clarity, location, sizing, materials, and information on the designation of doors, windows, roof finishes, equipment, plumbing, electrical fixtures and low voltage devices.

Schedules help keep drawings from becoming cluttered with too much printed information or notes and provide a quick reference for the contractor, and workers on the site.

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Equipment schedules are laid out in a spread sheet format listing all the information needed to insure that the right devices are placed correctly.

Schedules for each of the different trades will be included in the drawing sheets for that trade.

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The equipment schedules will vary from trade to trade and drawing to drawing but will generally include the following;

1. Vendor name2. Product name3. Part number4. Type5. Color6. Letter

identifier7. Quantity

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Here is a simplified equipment schedule, on the blueprints a specific section on the drawing will have a mark number/s that refer to this schedule.

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In this conference room there is a TV and it has a mark reference of 3 & 5.

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If we look at the equipment schedule we see that we need a fixed mount (wall mount) with a 62” plasma monitor, the general notes will indicate the mounting height.

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The mark can also be listed as type or letter, all used as references between the drawings and the schedules.

For electrical installations there will be many different types of equipment schedules, the following slide shows a partial of a light fixture schedule, sometimes referred to as luminaries.

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CONSTRUCTION BLUEPRINT READINGAs you can see these schedules are comprehensive

and include all the info needed to place all the different types of lights.

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Here is another variation of the lighting fixture schedule using a type column instead of a mark header.

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Some other examples of electrical schedules are;

Three phase circuit size schedulesThree phase transformer scheduleTime clock schedulePanel board scheduleMotor circuit schedules

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In some cases equipment schedules will include a remarks column that provide additional information not found in the general notes.

Equipment schedules may also include substitution allowances, such as substituting a different colored conductor for another.

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During construction, changes usually are necessary because of factors unforeseen during the design phase.

If cabling or raceway is re-routed, or equipment installed in a different location than shown on the original drawings, then such changes must be documented on the drawings.

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In the low voltage field moves, adds and changes (MACs) are very common during the construction process.

The MACs are not part of the original project so those changes are written in on the drawings, usually in red pen.

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On most construction projects the low voltage cabling pathways are not represented on any of the drawings and is normally established on site by the technicians.

The cabling pathways also need to be recorded on the electrical drawings for future reference.

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Without any of these changes being recorded technicians returning to the site for maintenance or to perform MAC work at a later date will have trouble locating the cable pathways or equipment.

Any changes made during the construction or installation process are documented on the blueprints and then a revised set of prints are produced to reflect the new changes.

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The revised drawing showing all of the new changes is referred to as as-builts and are labeled as such.

These drawings then become the drawings of record for that project.

As a technician you will record all these changes on site and then transpose the new information onto a clean set of drawings that will then get turned into the office.

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Before the project;

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During construction;

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As-built drawing after construction with all of the changes.

Documents

1 CONSTRUCTION BLUEPRINT READING EQUIPMENT SCHEDULES