


        1) USER INFORMATION FOR DETACT-QS AND DETACT-T2 PROGRAMS

        This disk contains a number of files pertaining to two computer
        programs, DETACT-QS and DETACT-T2, developed by the Center for Fire
        Research at the National Bureau of Standards.   A brief description
        of the programs is provided below.

        DETACT-QS (DETector ACTuation Quasi Steady) is a program for
        calculating the actuation time of thermal devices below unconfined
        ceilings.  It can be used to predict the actuation time of fixed
        temperature heat detectors and sprinkler heads subject to a user
        specified fire.  DETACT-QS assumes that the thermal device is
        located in a relatively large area, that is only the fire ceiling
        flow heats the device and there is no heating from the accumulated
        hot gases in the room.  The required program inputs are the height
        of the ceiling above the fuel, the distance of the thermal device
        from the axis of the fire, the actuation temperature of the thermal
        device, the response time index (RTI) for the device, and the rate
        of heat release of the fire.  The program outputs are the ceiling
        gas temperature and the device temperature both as a function of
        time and the time required for device actuation.  DETACT-QS was
        written in BASIC by D.D. Evans.

        DETACT-T2 (DETector ACTuation Time squared) is a program for
        calculating the actuation time of thermal devices below unconfined
        ceilings.  It can be used to predict the actuation time of fixed
        temperature and rate of rise heat detectors, and sprinkler heads
        subject to a user specified fire which grows as the square of time. 
        DETACT-T2 assumes that the thermal device is located in a relatively
        large area, that is only the fire ceiling flow heats the device and
        there is no heating from the accumulated hot gases in the room.  The
        required program inputs are the ambient temperature, the response
        time index (RTI) for the device, the activation and rate of rise
        temperatures of the device, height of the ceiling above the fuel,
        the device spacing and the fire growth rate.  The program outputs
        are the time to device activation and the heat release rate at
        activation.  DETACT-T2 was written in BASIC and FORTRAN by
        D.W. Stroup.

        2) DETACT-QS FILES

        The following files pertain to the DETACT-QS program.

        DET12.BAS   Version 1.2 of the DETACT-QS program.
        DET13.BAS   Version 1.3 of the DETACT-QS program.
        DET12.EXE   The compiled version 1.2 of the DETACT-QS program.
        DET13.EXE   The compiled version 1.3 of the DETACT-QS program.
        DET121.BAS  A modified form of version 1.2 of the DETACT-QS
                    program using large display characters and graphics.
        DET131.BAS  A modified form of version 1.3 of the DETACT-QS
                    program using large display characters and graphics.


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        2.1) DET12.BAS

        This is version 1.2 of the DETACT-QS program and is run from BASIC
        or BASICA.  Version 1.2 is essentially the same as version 1.1.  The
        documentation for version 1.1 can be found in NBSIR 85-3167 Methods
        to Calculate the Response Time of Heat and Smoke Detectors Installed
        Below Large Unobstructed Ceilings.  Modifications have been included
        to flag detectors which do not actuate and print results in
        engineering as well as SI units.  The input units are SI.  The
        program is a contribution of the National Bureau of Standards and is
        not subject to copyright.

        2.2) DET13.BAS

        This is version 1.3 of the DETACT-QS program. Version 1.3 is the
        same as version 1.2 except the input is in engineering units.  The
        program is a contribution of the National Bureau of Standards and is
        not subject to copyright.


        2.3) DET12.EXE

        This is a compiled form of version 1.2 of the DETACT-QS program and
        is run by typing DET12 (with the appropriate disk drive letter if
        necessary) after a system prompt.  It is NOT run from BASIC.  This
        program is identical to the standard version and will run several
        times faster.  It cannot be modified directly.  This file was
        generated with a Microsoft BASIC compiler and portions are copyright
        Microsoft Corp.

        2.4) DET13.EXE

        This is a compiled form of version 1.3 of the DETACT-QS program and
        is run by typing DET13 (with the appropriate disk drive letter if
        necessary) after a system prompt.  It is NOT run from BASIC.  This
        program is identical to the standard version and will run several
        times faster.  It cannot be modified directly.  This file was
        generated with a Microsoft BASIC compiler and portions are copyright
        Microsoft Corp.

        2.5) DET121.BAS

        This is version 1.21 a modified form of the version 1.2 program and
        must be run from BASICA.  It requires a color monitor or monochrome
        color emulator.  It performs the same calculations as the version
        1.2 program but uses large characters for output.  In addition, it
        can produce a graph of the results.  This graph is produced by
        responding to the question PLOT RESULTS (Y/N)? with a Y.  The graph
        will appear on the screen and the program will pause.  At that
        point, the graph can be copied to a graphics printer with a shift
        PrtSc.  Typing any key will cause the program to continue.  Most
        computers will require the command GRAPHICS to be entered to an

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        operating system prompt before entering BASICA in order to copy the
        graph.  Some computers may also require a MODE CO40 command to set
        the proper mode before entering BASICA.

        2.6) DET131.BAS

        This is version 1.31 a modified form of the version 1.3 program and
        must be run from BASICA.  It requires a color monitor or monochrome
        color emulator.  It performs the same calculations as the version
        1.3 program but uses large characters for output.  In addition, it
        can produce a graph of the results.  This graph is produced by
        responding to the question PLOT RESULTS (Y/N)? with a Y.  The graph
        will appear on the screen and the program will pause.  At that
        point, the graph can be copied to a graphics printer with a shift
        PrtSc.  Typing any key will cause the program to continue.  Most
        computers will require the command GRAPHICS to be entered to an
        operating system prompt before entering BASICA in order to copy the
        graph.  Some computers may also require a MODE CO40 command to set
        the proper mode before entering BASICA.

        3) DETACT-T2 FILES

        The following files pertain to the DETACT-T2 program.

        DETACTT2.BAS   The DETACT-T2 program in BASIC
        DETACTT2.FOR   The DETACT-T2 program in FORTRAN
        DETACTT2.EXE   The compiled form of the FORTRAN version

        For program documentation see NBSIR 85-3167 Methods to Calculate the
        Response Time of Heat and Smoke Detectors Installed Below Large
        Unobstructed Ceilings, and NBS Special Publications 712 and 713
        Evaluating Thermal Fire Detection Systems.

        3.1) DETACTT2.BAS

        This is the BASIC version of the DETACT-T2 program and is run from
        BASIC or BASICA.  This program is a contribution of the National
        Bureau of Standards and is not subject to copyright.

        3.2) DETACTT2.FOR

        This is a source program of the FORTRAN version of the DETACT-T2
        program and is included for those who wish to modify the program. 
        This program is identical in function to the BASIC version.  This
        program is a contribution of the National Bureau of Standards and is
        not subject to copyright.

        3.3) DETACTT2.EXE

        This is a compiled form of FORTRAN version of the DETACT-T2 program
        and is run by typing DETACTT2 (with the appropriate disk drive
        letter if necessary) after a system prompt.  It is NOT run from

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        BASIC.  A FORTRAN compiler is not required to run this program. 
        This program is identical in function to the BASIC version and will
        run several times faster.  It cannot be modified directly.  It
        requires approximately 64K of free random access memory and will run
        with or without an 8087 or 80287 coprocessor. This program file has
        been compiled with a Microsoft compiler and portions are subject to
        copyright by the Microsoft Corporation.   The program source file is
        a contribution of the National Bureau of Standards and is not
        subject to copyright. 

        4.) REVISION HISTORY

        4.1) DISK A02  release 2  3/86
          DETACT-T2 programs added.

        4.2) DISK A07  release 1  9/14/87
          Detact programs moved to DISK A07
          Added file README07.EXE to display DISKA07.TXT on screen one
          screen at a time.
          Added file USERINFO.TXT.

        4.3) DISK A07  release 2  4/15/92
          Files DET12.BAS, DET121.BAS, DET13.BAS, and DET131.BAS changed to
          ASCII format from packed BASIC.





























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