Layouts & Details
From the contractor point of view, the layouts and details are the core of the design deliverables as these are the most important documents that will be used for construction. Therefore, we classified the layouts and details in a way that will fit the contractor intent.
The normal process of hiring contractors is to hire general construction contractor to undertake the main work, in addition to other specialized contractors to perform speciality work. Also, contractors normally follow specific sequence to undertake their work such as doing all the work that requires scaffolding at the same time.
The above aspects are regarding when classifying the layouts to minimize the number of drawings that are handled by each contractor with a certain phase of work.
• Coordinated layouts
Our drafting standard is based on drawing each system and type of connections on a uniquely name dedicated layer. This will help when creating composite drawings to ensure that all electrical services are coordinated.
The composite electrical drawings can be provided to the project coordinator to use it along with similar drawings developed by other engineering disciplines. Changes arise due to crashes or conflicts can be discussed and layouts can be adjusted accordingly.
Alternatively, our team can handle any coordination work required and can provide overall composite drawings highlighting any conflicts. Our team is properly trained to handle coordination work and communicate efficiently with other parties for resolutions.
• Hazardous area classification layouts
These layouts provide visual interpretation of the results of the hazardous area classification studies. The layouts show a plot plan for the plant area with markups identifying the extend of each hazard classification. Sections and details are provided to highlight parts of the plot plan that need particular attention.
• Lighting layouts
These layouts show the distribution of lighting fixtures, the identification of each fixture type, and the circuit connections of lighting fixtures to their supply distribution boards.
Lighting fixture distribution and types are based on the lighting calculations report. The circuit distribution and lighting control philosophy are affected by the daylight analysis as it specifies which lights need to be on during specific time of the day.
• Power layouts
These layouts show the distribution of receptacles and other power outlets for small equipment and appliances complete with identifications for outlet types and circuit connections to their supply distribution boards.
• Fire alarm system layouts
These layouts include fire detection zone identification layouts as well as the layouts that show the fire detection and alarm device locations and their connections.
The layouts show all equipments that are either monitored or controlled by the fire alarm system.
The coverage of audible and visual fire alarm devices is presented by these layouts to verify that an alarm can be heard and seen from anywhere in the protected area.
• Communication system layouts
All equipment associated with telecommunications are presented in these layouts along with their interconnecting cables.
• Control systems layouts
These layouts show the locations of all equipment associated with control systems and their interconnecting cables.
• Main routing layouts for power, communications and control systems
While lighting, power, fire alarm, communications, and control systems layouts show the interconnecting cabling and small conduit runs between system equipment, the main routing layouts show the main raceways used to hold different systems cables. These raceways include cable trays, trunking systems, large conduits, cable buses and busways.
• Panel boards schedules
Based on the outcome of the load analysis report, loads are assigned to different distribution boards. The panel board schedules show these load assignment, their circuit connections and protective device ratings. The main purpose of panel board schedules is to ensure that all loads are properly distributed among different phases such that the overall system balance is maintained as close as possible.
• Single-line diagrams.
Single-line diagrams (also called one-line diagrams) are developed for main switchgears, switchboards and motor control centers. The purpose of these diagrams is to show the major protection features of the board and each of its feeders and the load which this feeder is connected to.
• Wiring and interconnection diagrams and schematics
Wiring diagrams provide very specific details on the internal connections of each part of the equipment. The details include wire tags and terminal numbers and will help the contractor get better knowledge on where exactly wiring will be terminated.
• 3-D Modeling
Based on client’s request, our team can provide 3-D models that show all major electrical services within the project area. These models have particular importance in the coordination process as well as provide more visually familiar view of the shape of the area after the work is done.
3-D models developed can be provided to third party to superimpose them with other 3- models developed for other disciplines. Our team can also help obtaining third-party 3-D models and superimpose them to the electrical model and run the clash analysis if required.