## Understanding assembly cost data

Understanding Assembly Cost Data RSMeans unit cost data can be combined into systems that make up the functional elements of a building, which are called assemblies. Assembly costs are used to calculate the total building costs for commercial, industrial, and institutional projects. Assembly listings are arranged according to the 7 division UNIFORMAT II classification system.

Note: For information about unit cost data, see Understanding unit cost data.

This section contains the following topics:

### Understanding assembly line numbers

Each assembly line is assigned a unique identification number based on the UNIFORMAT II classification system and can be broken down into individual components, as shown below:

### Viewing assembly line components

You can view all the information for an assembly line from the Estimate window.

To view assembly line components,

 1 Click on an assembly line number. Result: A pop up window displays the line number, a description, crew requirements, graphics link, and detail link: Note: Not all assemblies have data for each category. 2 To view a list of the components of an assembly, click the Details link in the display. Result: The Assembly Components widow is displayed:

### Understanding assembly line components

Each assembly is made up of individual units. The total cost of an assembly is the cumulative costs of the units in the assembly.

The following example shows one unit for an assembly:

The above example shows that this particular assembly requires 0.03400 of SFCA C.I.P. concrete forms to complete the assembly.

The following table describes the unit components that make up an assembly.

Component Description
Quantity The amount of the individual unit that is required to make up one assembly. This number is commonly represented in both whole numbers and in tenths, such as .030400, as shown in the example above.
Unit How the unit is measured. The abbreviations are industry standard, such as SFCA (square foot of contact area) as shown in the above example.
Material The material cost of the unit, which is bare costs plus 10% for profit.
Installation The installation cost of the unit, which is labor and equipment, plus the installing contractor's overhead and profit. For equipment costs, this is the bare rental costs plus 10% for profit.
Total The sum total of the material and installation costs.

### Viewing graphics files

Click the Graphic link to open the file in a separate window:

Note: The graphics files are in PDF format.

The following is an example of an assembly graphic file:

### Accessing reference materials

Certain assembly systems have corresponding reference files. These files are key to understanding the assembly and consist of one of the following:

• an estimating procedure that you must read before creating your estimate

• an alternate pricing method

• technical information.