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Electrical Design Validation through BIM

Design Validation

Pinnacle understands that engineering drawings should be backed by design calculation and validation of the same. Qualified engineers of Pinnacle use ETAP and REVIT as the design and validation software.

Our Electrical Design Validation Service Offerings:

Creation and validation of SLD using ETAP

We follow IEEE, ICEA & NEC standards for calculating cable ampacity & sizing and ANSI/IEC standard for short circuit calculation. Protective device coordination, operation sequencing and earth fault loop impedance measurement are done as a part of SLD generation.

Preparing the DB Schedules using Revit

REVIT provides the facility of DB scheduling. Once electrical loads are connected to the panel, the wire size is reflected in the panel’s schedule. The voltage drop of each circuit is reflected in the panel’s schedule. If the voltage drop goes beyond allowable limit or in the event of load imbalance among phases, circuits are redrawn and the process is reiterated till satisfactory results are obtained.

Sizing the Tray and Trunking and other containment based on required filling ratio

Our team prepares the schedule of cable to be contained in a tray/ trunk after studying the SLD and IFC layout drawing. The required space is calculated from the overall diameters of cables obtained from the manufacturer’s catalogue, considering clearance between adjacent cables. Tray and trunk sizes are finalized from the standard list after adding space requirement of all cables and allowing for the desired filling ratio/space factor.

Cable sizing considering maximum allowable Voltage Drop

A comprehensive cable schedule is prepared following the SLD which shows the final selected size of cables. Cable sizes are selected based on the laying condition and allowable voltage drop. The required data of voltage drop per amp and per 1000 meter of cable are obtained from the approved manufacturer’s catalogue.

Illustration – Validation of Wire/Cable Sizes for Main and Branch circuits

After connecting the electrical loads in the panel, the wire size is reflected in the panel’s schedule and re-checked with design drawings to identify potential wire size problems.

Lux Level Calculation using Dialux and generating automated reports in graphics

Our team uses Dialux or other lighting calculation software defined in the contract to finalize the lighting layout, considering the desired lux level for each area. Luminance of working plane is calculated by incorporating photometric web files (.ies) into the lighting fixture family, compared with the required lux level. Photometric report is generated to validate the lighting layout and its wattage rating. Lighting circuit is drawn and lighting DB schedule is finalized based on the finalized layout.

Load Validation (CB Rating by REVIT MEP)

Load validation is done using ETAP, referring to the approved manufacturer’s catalogue. AF and AT values are shown in the SLD as well as in the panel schedule. The illustration shows the validation of connected loads by generating circuits in Revit MEP. The required CB Rating of each circuit can be quantified to design an efficient wiring system.

Validation of System Voltage (120/208V, 277/408V and others)

Voltage rating is checked and verified for components, equipment and distribution system.

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