DCI Directives

DCID 1/21 Quick Reference SCIF Construction Guide

2 April 99

(Author: Tim Schneider, HQ AFMC/INS, (937) 257-5970, DSN prefix 787)

The purpose of this guide: to help you immediately identify and consider the physical security elements when establishing a SCIF. Use this checklist when consulting with the architect, designer, or other individuals involved in determining the security requirements and costs associated with the physical security of the proposed SCIF.

Remember the key to SCIF design: balance the threats and vulnerabilities against appropriate security measures in order to reach an acceptable level of risk (as mentioned in DCID 1/21, para 1.2.1).

This guide does NOT replace the need for completing the Fixed Facility Checklist (FFC) found in DCID 1/21. It is just an aid for you, the user.

To use this document:

Sensitive Compartmented Information Facility (SCIF) Elements





1. Peripheral Security

a. Location:





b. Type of installation & access

(1) Military Installation

(a) Closed/controlled access


(b) Open access


(2) Public/private property

(a) Closed/controlled access


(b) Open access


c. Building:

(1) Closed/controlled access


(2) Controlled access after duty hours


(3) Open access


2. Construction

a. Room constructed of interior space enclosed by or separated from others by four

walls, a true ceiling, and a true floor, constructed of solid building materials.


(1) Walls, ceiling, floor are constructed of permanent materials (e.g. plaster, gypsum

wallboard, wood/plywood,etc.) offering resistance to and evidence of unauthorized



(2) Walls extend from true floor to true ceiling.


b. Windows.

(1) SCIF on:

(a) Ground floor?


(b) 2nd floor or higher?


(2) Secured against opening (by locks, sealing with welds/fasteners, etc.)?


(3) Window alarm sensor used?


c. Air vents/ducts, pipes, and other penetrations

(1) Less than 96 square inches or less than 6 inches in one dimension?


(2) More than 96 square inches?


(3) If more than 96 square inches, protected by (only one necessary for 2c3a – 2c3d):

(a) an Intrusion Detection System (IDS) device, or


(b) ½" steel manbars, welded vertically & horizontally 6" on center, or


(c) metal grill consisting of 9-gauge expanded steel, or


(d) sound baffles or wave forms (permanently installed).


(e) Inspection port installed on air vents/ducts that allow a view of the installed

security devices. (Required, as a method of performing verification of installation.)


(4) Are all gaps/holes around or near the air vent/pipe penetrations to the SCIF

perimeter sealed?

Sensitive Compartmented Information Facility (SCIF) Elements





2. Construction (continued)

d. Doors

(1) Door type (*SCIF entrance & emergency exits should be same/equal strength.)

(a) 1 ¾" solid core wood


(b) 1 ¾" metal w/honeycomb fill


(c) 1 ¾" metal fire


(d) 1 ¾" metal acoustical


(2) Door hardware elements installed (all required, unless otherwise noted):

(a) Balanced Magnetic Switch (BMS) door alarm sensor


(b) automatic door closer


(c) hinge protection


(d) panic hardware (safety)


(e) sound gasketing fastened to and around door frame (for sound attenuation).


(f) GSA-approved combination lock (must meet Fed Spec FF-I-2740; Mas-Hamilton

X-07 is the only currently approved lock) { *SCIF entrance door only}


(g) access control device { *SCIF entrance door only}

***NOTE: the exterior face of an emergency exit door should NOT have any hardware installed.***


3. Intrusion Detection System (IDS)

a. Interior protection (covering logical points of entry, e.g. a door or window)

(1) Passive Infrared (PIR) sensors


(2) Motion detection sensors


b. BMS door alarm sensors


c. Tamper protection: all alarm sensors, the Perimeter Control Unit (PCU), and the alarm

signal line require tamper protection.


d. PCU located within the SCIF? (PCU must be located within the SCIF.)


e. Electronic line supervision:

(1) Class I


(2) Class II


f. Emergency power available for the IDS?


4. Telephone System

a. Type of telephone security used:

(1) TSG-2 Computerized Telephone System (CTS)


(a) Is the CTS mainframe switch located within controlled space?


(b) Does the CTS use remote maintenance, diagnostic, or other remote access



(2) TSG-6 approved telephones (e.g. STU-III) used?


b. Other telephone features:

(1) Speakerphone capability and use? (Must first be approved by DIA.)


(2) Automatic call answering:

(a) answering machine (Must first be approved by DIA.)


(b) Voice mail


(c) Other (List___________________________________________)


5. Acoustical Protection

a. STC 45 met?

(1) Door(s)


(2) Walls


(3) Ceiling


(4) Floor


(5) Air vents/ducts


b. Acoustical protection measures taken:

(1) CD/tape player/radio


(2) White noise generator


(3) sound baffles or wave forms (air vents/ducts)


(4) Other (List______________________________________________)





Date Item/Description

12 Apr 99 Cost for Drywall Construction

The cost per linear foot of a staggered stud wall 8 feet high with ½" gypsum wallboard on each side

and batt insulation is $19.10, finished and installed. A second layer of gypsum wallboard is about

$0.75 per square foot installed. The cost is a national average base on cost data from the Means

Pricing Guide. (Source: HQ AFMC/CEC 6 Apr & 12 Apr 99 emails, Mr. Ron Onderko.)