Adjustments tab on Construction cost Dialog
Data on the Adjustments tab can be used to allow EnergyPlus to perform various modifications to the construction costs to arrive at a more realistic estimate for total project costs than is possible through summing the construction cost line items alone. It allows the line item model to be extended so that the overall costs of the project will reflect various profit and fees.
Note: Adjustments cost data is used only in EnergyPlus simulations and is not used in DesignBuilder's Cost calculations on the Cost and Carbon tab.
This optional field can be used to enter a cost model for miscellaneous project costs that are not included in the line item modelling. Miscellaneous costs are entered in cost (local currency) per conditioned floor area. This field allows including the costs of project elements that go beyond what can be modelled using Line item objects. The value input in this field will be multiplied by the conditioned floor area and will be listed in the Construction Cost Estimate Summary table.
This field can be used to enter an adjustment factor to account for regional differences in construction costs. The factor will be applied to the modelled and miscellaneous construction costs to determine an amount that should be added, or subtracted, to account for local variations in construction costs. The default factor is 1.0, which means no regional adjustment. The additive adjustment is calculated by subtracting 1.0 from the value entered in this field. This field is useful for using national average data in the line item and miscellaneous construction cost models and then altering the results based on regional differences.
The total base costs calculated by applying the regional adjustment factor to be modelled and miscellaneous construction costs will be used for calculating other additional costs in terms of multiplying the fractions in the following five fields.
This field can be used to enter a fraction of total base costs that should be added to account for design and engineering fees. Note it is not the same as a fraction of the total cost estimate.
This field can be used to enter a fraction of total base costs that should be added to account for Contractor fees. Note it is not the same as a fraction of the total cost estimate.
This field can be used to enter a fraction of total base costs that should be added for contingency. Note that is not the same as a fraction of the total cost estimate.
This field can be used to enter a fraction of total base costs that should be added to account for permitting, bonding, and insurance costs to the project. Note that is not the same as a fraction of the total cost estimate.
This field can be used to enter a fraction of total based and miscellaneous construction costs that should be added to account for commissioning services. Note that is not the same as a fraction of the total cost estimate.