A construction network is included in each facility of the ABFC system as part of the design package in the NAVFAC P-437 (fig. 4-1). The network includes such information as tool kits, equipment, and PRCP skills required for each facility. Time and effort are saved by using the construction networks that were developed for each facility in the ABFC system. To benefit from the construction networks, you must have an understanding of the basic principles and assumptions upon which the networks are based. Network analysis procedures for precedence diagraming are contained in chapter 5 of the Seabee Planner's and Estimator's Handbook, NAVFAC P-405, and chapter 2 of this TRAMAN.

Volume 2 of NAVFAC P-437 contains the detailed data display for each component, facility, and assembly. (Except for earthwork, material lists in volume 2 are complete balls of material.) It also is arranged in three parts.

Part 1 lists and describes by DoD category code the facilities requirement for each component.

Part 2 lists and describes by assembly number the assembly requirement for each facility.

Part 3 lists line-item requirements by national stock number (NSN) for each assembly.

The P-437 also contains other useful information for planners, such as crew sizes; man-hours by skill; land areas; amounts of fuel necessary to make a component, facility, or assembly operational; and information about predesigned facilities and assemblies that are not directly related to components shown in the ABFC table (OPNAV 41P3A). These predesigned facilities and assemblies give the planner alternatives for satisfying contingency requirements when the callout of a complete component is not desired. To make the P-437 compatible with other DoD planning guides, Category Codes Facilities, NAVFAC P-72, a related publication, establishes the category codes, nomenclature, and the required units of measure for identifying, classifying, and quantifying real property. The cardinal category codes are as follows:

100 Operations and Training

200 Maintenance and Production

300 Research, Development, and Evaluation

400 Supply

500 Hospital and Medical

600 Administrative

700 Housing and Community Support

800 Utilities and Ground Improvement

900 Real Estate

If a facility is required for enlisted personnel quarters, for example, it will be found in the 700 series (Housing and Community Support). The assemblies within each facility consist of a grouping of line items at the NSN level which, when assembled, will perform a specific function in support of the facility. An assembly is functionally grouped in such a way that the assembly number relates to the Occupational Field 13 (Seabee) skill required to install it. The groupings are numbered as follows: