U.S. Department of Agriculture FL-ENG-313D Natural Resources Conservation Service Sheet 1 of 2 04/04 POULTRY COMPOSTER/LITTER DRY STACK STRUCTURE DESIGN WORKSHEET (TWO WALLS) Composter and Litter Storage in Same Building Conservation District: ____________________ Field Office: ____________________________ Cooperator: ___________________________ Location: ______________________________ Identification No.: _______________________ Field No. ______________________________ V L = Volume of litter stored (Form FL-ENG-317B, “Storage Requirement”): ________ ft 3 L p = Length of Primary stage (Form FL-ENG-317A, “Dimensions of Linear Stack Bins”): ________ ft L s = Secondary stage length ( >= L P ): ________ ft W c = Width of composter pile (Form FL-ENG-317A, “Dimensions of Linear Stack Bins”): _______ ft. W L = Width of litter pile (calculate below) W b = Width of building (dimension from inside of post to inside of post): _________ ft. h m = Max height of pile (Max. 7 ft.): _________ ft. h w = Height of wall (h s + Freeboard): __________ ft. h s = Height of pile at side walls (Max for wooden wall = 5 ft): _________ ft. h e = Height to gable end closure wall: ___________ ft. Z = Side slopes: __________ (If Z is not known, use 1.5) L C = Length of linear stack bin required (calculate below) A x = Cross sectional area of pile (calculate below) L m = Length of litter pile (calculate below) L i = Length of building (initial calculation) including freeboard (FB e ) L CR & L iR = Recommended values for L C and L i (rounded to accommodate Post Spacing) L T = Total length; L i or L C adjusted to account for spacing between side posts FB s = Freeboard from toe of composter pile to toe of litter pile to accommodate equipment, minimum of 8 ft: _________ ft. FB e = Horizontal freeboard between toe of pile and open end (calculate below). Recommend 30 degrees from the vertical on all exposed sides to prevent windblown rainfall from impacting on the containment area. Assume: (1) trapezoidal x-section of pile.