How to Detail Electrical Outlet on Cad Drawing Floor Plan

How To Read Electric Plans

Scale of Reflected Ceiling Plans

Reflected ceiling plans should be drawn at the same scale as the floor plans. Depending on the complexity of the projection and ceiling treatment, the most mutual scale for residential and pocket-size commercial projects is i// = i'-0" (1:50 metric) and V8" = i'-0" (one:100 metric) for large commercial projects. The scale the ceiling plan is drawn at should be noted and placed directly below the drawing, either next to or directly below the title. If an enlarged particular is needed to explain a feature in the ceiling, it is keyed with a note or symbol to a separate, larger-scale drawing.

The luminaires should exist fatigued every bit simple rectangles, squares, or circles that depict the actual fixture as closely as possible. Simplistic forms prevent clutter in the view for ease of recognition. In almost cases, the lighting fixture is drawn to the scale of the actual fixtures. However, in some cases such as miniature spotlights, the size may accept to be exaggerated, equally the properly scaled unit would be too small-scale to show upwards on the plan.

Fractional REFLECTED CEILING Plan

An enlarged item of a blackout shade is drawn in section view and keyed to its location in the small-scale reflected ceiling plan.

Lighting fixtures are represented with symbols in the reflected ceiling programme and keyed to a fable showing specifications.

Drafting Standards for the Reflected Ceiling Plan

A reflected ceiling program must clearly show all walls, partitions, and soffits that intersect with the ceiling. It should besides specify changes in ceiling elevations and materials, such as lights, sprinklers, smoke detectors, and HVAC diffusers that adhere to or penetrate the ceiling. In drafting reflected ceiling plans, the designer should reproduce the flooring plan walls and openings such every bit doors and windows, but without showing items such as built-in cabinetry, plumbing equipment, etc.

The lighting fixtures and other electrical features shown on the reflected ceiling programme are given symbols that are keyed to a legend. It is advisable to depict in all the electrical symbols on the plan before it is dimensioned or notes are added. If not, a symbol may autumn on top of a dimension, thus requiring the dimension to be moved. Locate the light fixtures in the ceiling plan in accordance with the lighting blueprint concept. Mutual types of light fixtures on the lighting plan include surface-mounted, recessed, pendant, and track-mounted.

On commercial projects where there is a suspended ceiling, the reflected ceiling plans would show any partitions that extend through the ceiling airplane as well. The ceiling grid lines (called "T" bars) should besides be shown. Other data included in the reflected ceiling program are the ceiling materials, ceiling heights, ceiling slopes, changes in ceiling heights, locations of all lighting fixtures (including exit and emergency lights), air dif-fusers and vents, access panels, speakers, sprinkler heads (if used), and other items that touch or are part of the ceiling plane.

Adjacent, the interior designer should determine how the lights in the space are to be switched. For residential or small-scale commercial

Standard lighting and electrical symbols

The ceiling grid, likewise as lights and other items located within it, are shown to scale.

The ceiling filigree, as well as lights and other items located inside it, are shown to scale.

The switching tin either exist shown on the reflected ceiling plan or on the electrical lighting program. The switching blueprint should be based on how much private command is needed and the office of the lighting. Energy conservation needs and maximum excursion loads inside the circuits volition likewise determine the number and location of the switches. Mostly, switches are located nigh the door or opening leading into the space. Large spaces that have more than than one entry may require multiple switching locations.

After locating the switches, make up one's mind which luminaires they should control and delineate this on the program. This tin can be washed in two means, depending on the size and complexity of the lighting plan.

The commencement method is to draw a line from the wall switch to the fixtures it controls. This connecting line should exist dashed and curved to distinguish it from other objects and items on the drawing. Curved lines are preferred, as straight lines may get mixed up with wall lines or other items that are drawn in the programme. The connecting curved line should touch the outlet or fixture symbol. The symbol for switches tin be a uncomplicated S. If a detail lighting fixture is switched from two locations, the symbols will be S3 to indicate that iii items (two switches and one lighting fixture) are connected electrically.

The second method of showing light-fixture switching is to assign a number or letter of the alphabet to the switch and to place this same number in or near the low-cal fixture shown in the ceiling plan. This method is used primarily in commercial spaces, where there might be a lot of multiple switching and other items placed on the ceiling plan, and so that the utilise of lines (the get-go method) could complicate the drawing.

Afterwards the interior designer lays out the lighting and switching, the drawing is given to an electrical engineer, who indicates the exact circuitry, wire sizes, and other specifications required for the electrical system. In residential spaces, the cartoon might be given straight to the electrical contractor, every bit the circuitry and requirements here are not every bit circuitous as those in commercial work.

Designation of Materials

When preparing the reflected ceiling plan, the designer must phone call out types and locations of specific ceiling materials. This can be done by placing notes on the plan, or symbols that are referenced to a ceiling textile legend. The two most mutual ceiling systems used are gypsum lath ceilings that are attached to the construction to a higher place, and suspended acoustical ceilings. Other ceiling finishes might include wood facing, linear metal, or even exposed wood joists and beams. Dimensioning Reflected Ceiling Plans

Every bit the reflected ceiling plans are generally fatigued to a calibration that matches the floor plans, there is no need for a lot of dimensioning on the plan, unless ceiling breaks or changes of materials occur where they are not plainly located at a door, wall, or column location. As long as the reflected ceiling plan is drawn to calibration, the dimensions of the spaces and structure can be reserved for the floor plan. However, in some cases, the sizes of the units and the fixture locations do need to be dimensioned. This is particularly true for big expanses of gypsum board ceiling, where the scale cannot be as easily adamant as in a gridded suspended ceiling assembly (where, for example, one can count units to locate the light fixture).

When dimensioning the reflected ceiling program, either "end" dimensions or "framing" dimensions can be used, but the choice must exist noted on the plans. Elements such as recessed light troffers can be precisely located in the finished space. If a downlight in a gypsum wallboard ceiling is to exist used, information technology more often than not is dimensioned to its heart indicate so the electrical contractor knows where to install

Partial REFLECTED CEILING PLAN

sc: i/4"= r-o"

it. Alignment and direction of patterns might need to exist dimensioned directly on the plan. In these instances, references should exist given that are easily obtainable in the field. Dimensions should be referenced from the face of a wall, column, or imaginary centerline of a room, equally illustrated in Figure xiv-17.

The recessed down lights in this reflected ceiling plan are dimensioned in relation to each other and various wall elements and soffits.

Checklist for Reflected Ceiling Plans

Full general

• Title the drawing, note its scale, and identify north (or reference direction).
• If needed, develop a ceiling type material schedule and key information technology to the plan.
• Develop a lighting symbol legend and locate information technology on the same sail as the beginning reflected ceiling programme (if more than one is required), or on a nearby sail.
• Clean up the plan (or in CAD, turn off superfluous data) so the walls, spaces, and primal codes are articulate, dark, and very legible. Don't bear witness items unless they are on the ceiling plane or intersecting it.
• Draw in major soffits or openings above and call them out in a note, including attic access panels.
• Pouche walls, if applicative.
• Decide on the switching patterns of the light fixtures (if the interior designer has this responsibleness) and show by the curved-line method or utilise of numbers/messages.
• Cross-reference the reflected ceiling plan to other drawings (if applicable), carefully checking for accurateness and completeness of information.

Notations

• Notation where the ceiling level changes or slopes if this has a direct effect on the light fixtures and their installation.
• Note special features, clearances, finished ceiling heights in a higher place finish floors, alignments, and other important items.
• Cantankerous-reference the plan with symbols and reference to the lighting schedule, details, and other drawings as needed.

Dimensions

• Dimension the locations of light fixtures and changes in ceiling types that are not readily apparent. Locate to such items equally columns or existing walls.
• Dimension clearances, alignments, and other controlling factors.
• Dimension lighting coves and other structural lighting, or create large-calibration drawings of these and cross-reference.

Electrical Plans

Electrical plans can include electrical outlets, telephones, advice devices, and other items requiring electrical power. In small projects, these items tin be shown together with the lighting. An example of this type of cartoon is illustrated in Effigy 14-18. On large commercial projects, the electric plan, oft referred to as a power or power/communication plan, shows the outlets and related electrical devices separately (Effigy 14-19). In most cases, the plumbing fixtures and items such as cabinetry and other built-in items are shown in gild to more closely coordinate the location of electrical ability devices. In some instances, such as in open up-office situations, designers also adopt to testify the furniture, as many times it relates directly to the electrical outlet locations (Figure fourteen-20). The interior designer prepares the power plan and then forwards it to the electrical engineer to detail the circuitry, wire sizes, panel boxes, and other electrical specifications. On small residential plans, the drawing is given directly to the electrical contractor to install the piece of work according to accepted practices.

The telephone and other advice systems are also generally shown on the electric plan. Locations of telephones, public address systems, figurer terminals, intercommunication devices, and security systems are the responsibleness of the interior designer in consultation with specialists. The designer draws a ability/communications programme that schematically shows where power is needed for special equipment. Symbols for electrical devices are generally keyed to a legend that is on the same sheet as the plan. The electrical engineer or other system specialists do most of the detailed specifications for these devices.

ELECTRICAL 4 LIGHTING PLAN

In large commercial projects, a divide electrical/power plan with a fable specifies outlets and circuitry. Many architectural features and other systems are left out so that the electric plan can be easily read.

A ability plan oftentimes includes telephone and other communication devices.

In large commercial projects, a separate electrical/ability plan with a fable specifies outlets and circuitry. Many architectural features and other systems are left out so that the electrical plan tin can be easily read.

Scale of Electrical Plans

Electrical plans in commercial spaces are generally drawn at the same scale equally the floor plans. The well-nigh common calibration for commercial projects is V8" = l'-O" (1:100 metric). However, in complex installations, the calibration might exist increased to V4" = l'-O" (1:50 metric). The scale the program is fatigued at should be noted and placed either adjacent to or directly beneath the title.

Drafting Standards for Electrical Plans

Electrical plans must show all interior and exterior walls, stairs, and large devices, such as furnaces, water heaters, etc., that crave power. Built-in fixtures and cabinetry, such as in bathrooms and kitchens, should besides exist fatigued to better locate the electrical outlets and other devices. The walls should be drawn with lighter line weights so they do not boss the cartoon. Locate the convenience outlets on the walls where they are to exist mounted, and call out the dimension above the finished flooring (A.F.F.). Call up to annotation any special requirements such as weatherproof (WP), dissever-wired, or special-purpose connections. Mutual electric symbols are shown in Figure xiv-21.

Designation of Materials

Electrical plans are primarily diagrammatic. Although they are fatigued to a scale that matches the floor plans, the electrical devices are ofttimes too small-scale to portray in the drawing at their exact scale. They are fatigued as an oversize symbol to be easily recognized. To continue the drawing simple, materials such equally finish flooring and other items are not delineated.

Dimensioning Electric Plans

Electrical plans are fatigued to a scale that generally matches the floor plans. At that place is no need for a lot of dimensioning on the electrical plan, every bit items can be located to calibration on the floor plans. Withal, in some cases, electrical outlets and other devices do need to be dimensioned to accurately identify them where they can be easily accessed when the building is occupied. This is particularly true for large expanses of wall where the calibration cannot be accurately adamant past scaling the drawing. In such instances, references should exist given that are easily obtainable in the field, dimensioning from the face up of a wall, cavalcade, or imaginary centerline of a room. If a horizontal dimension is not given for a wall outlet, the electrician will place information technology as shut as possible to the designer'southward plan. The electrician might choose to attach the outlet to a wall stud rather than locating it between two studs if the designer has not dimensioned a specific location.

Although most electrical outlets do non need to exist exactly located, there are some exceptions, such as in this bar area, where outlets must coordinate with equipment.

PARTIAL Electrical PLAN

Checklist for Electrical Plans

General

• Title the drawing, note its scale, and identify due north (or reference direction).
• Championship the accompanying electrical schedule and key it to the programme.
• Add together notes to clarify any abbreviations that are not unremarkably recognized.
• Clean upwards the plan (or in CAD, turn off superfluous information) and then the walls, spaces, and fundamental electrical codes are clear, dark, and very legible.
• Cantankerous-reference the electrical plan to other drawings and schedules, carefully checking for accuracy and completeness of information.

Notations

• Note special situations, such every bit devices supplied past owner or others.
• Annotation special features, clearances, outlet locations above stop floors, cabinetry, and other items.
• Annotation alignments and other important items that affect the electric plan.

Dimensions

• Dimension location of outlets and changes in floor or wall types that touch the outlet installation.
• Dimension outlets to walls, wall corners or intersections, and other items such equally columns.
• Dimension the advisable outlets to the proper altitude above the finished floor (A.F.F.).
• Dimension clearances, alignments, and other controlling factors.

The mechanical systems of a building are commonly referred to collectively equally the HVAC (heating, ventilating, and air-condition-ing) organization. The HVAC arrangement ensures that the occupants of a building are provided with a comfortable environment. The system does more than than provide heating for winter and cooling for summertime. It brings in fresh air, circulates it through the interiors, and exhausts stale air and odors. It can likewise treat air to control humidity, dust, pollen, and other undesirable weather condition.

The plumbing organisation in a building serves a number of different functions, such as delivering water to people and machines through pressurization (h2o supply), and ejecting water to exist removed through gravity (drainage). Plumbing serves three bones needs: information technology provides water for homo consumption, germ-free drainage of wastes, and mechanical systems. Water might be used for equipment or serve an automated sprinkler system, as discussed later in this affiliate under plumbing plans. Some commercial buildings might likewise have a tempest drainage system that rids the roof or other areas of rainfall or flooding. Such systems are separate from the sanitary sewage pipe and collect into a tempest sewer or are routed to a curbside drainage. A building might besides have a waterfall feature, fountain, swimming, or other decorative element that has a specialized, recirculating water organisation.

Mechanical and plumbing drawings involve a lot of communication, coordination, and teamwork among the various design professionals and the contractors. The professional person offices that produce the HVAC and plumbing drawings must be aware of one

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