DOE-2 Reference Manual Version 2.1 - DOE2.com

There is a hierarchy of libraries that extends from MATERIALs on thelowest level, LAYERS (response factors) on the second level, CONSTRUCTIONs onthe third level, and up to Custom Weighting Factors. It is important that theuser understand that a DOE-2 library cannot be created on more than one levelat a time. For example, both a MATERIALs and a LAYERS library cannot becreated in one run. Instead, the lowest level 1 ibrary must be created firstand then attached as an input file named BDLLIB to the run in which the nexthigher level library will be created. The two libraries will be combined asoutput from the second run. Furth ermore, only the "h i ghes t" 1 eve 1 bei n g runin a given library-creation run will be stored. For example, if both userspecifiedLAYERS and SPACE instructions that contain WEIGHTING-FACTOR keywordsare found in a library-creation run, only the Custom Weighting Factorscalculated from the SPACE instructions will be added to the output file ofthat run. Therefore, if MATERIALs, LAYERS, CONSTRUCTIONs, and CustomWeighting Factors are all desired in the library, they must be created insuccessive runs of LIBRARY-INPUT LOADS (see Fig. 111.25).*Four situations are described below to Show the user what he needs to dowhen a. simply running INPUT LOADS with Precalculated Weighting Factors andthe standard BDLLIB; b. creating his own library of MATERIALs, LAYERS,CONSTRUCTIONs, and Custom Weighting Factors; c. running LIBRARY-INPUT LOADSto create Custom Weighting Factors from the standard, prespecified DOE-21 ibrary of MATERIALs and LAYERS; and d. using a combination of theprespecified ooE-2 library and his own library.a. Standard INPUT LOADS with Precalculated Weighting Factors. In thissituation, the user wishes to use Precalculated Weighting Factors, and doesnot wish to create his own libraries. In this case, the user builds his ownLOADS input as usual and attaches BDLLIB to his run (unless it so defaults onhis system). The user may, in any of these examples of LOADS input, defineMATERIALs and LAYERS that are not in a llbrary; he simply is not mak1ng a1 ibr ar y of them for 1 ater access.He must also give a value to the FLOOR-WEIGHT keyword (lb/ft2) in theSPACE-CONDITIONS instruction for each SPACE in his building (or he mayalternatively allow the keyword to default). This value will then be used bythe program to choose a set of Precalculated Weighting Factors for thatSPACE. If FLOOR-WEIGHT; 30., 70., or 130., standard, precalculated ASHRAEweighting factors for light, medium, or heavy construction will be used; forany other values, DOE-2 will interpolate between the ASHRAE weighting factors.Example a. is a diagram of this operation.* It 1S poss1ble to submit library creation runs "back to back" in onesubmission, but this is not recommended. In this case, the output, USRLIB,of the first LIBRARY-INPUT LOADS deck is taken by the program to be the inputfile to the next LIBRARY-INPUT LOADS deck, and the output of the second deckis called BDLLIB. The input and output file names will alternate in thisfashion, the final output file name depending on whether an odd or even numberof input decks was involved.III.151 (Revised 5/81)