Metodo Diseño De Tanques Circulares De Concreto

iDESIGN GUIDE MD #2 CIRCULAR CONCRETE STORAGE FACILITIES FOR STORAGE OF ANIMAL WASTE
CONSTRUCTION DETAILS AND SPECIFICATIONS

Maryland
Revised - December 2004

TABLE OF CONTENTS SECTION
I II III General Information Construction Specifications Construction Drawings for Circular Storage Facilities without Ramps Details: CT-8-75 Circular Concrete Storage Facility 8’ deep x 75’ MaximumDiameter CT-8-120 Circular Concrete Storage Facility 8’ deep x 120’ Maximum Diameter CT-10-75 Circular Concrete Storage Facility 10’ deep x 75’ Maximum Diameter CT-10-120 Circular Concrete Storage Facility 10’ deep x 120’ Maximum Diameter CT-12-90 Circular Concrete Storage Facility 12’ deep x 90’ Maximum Diameter CT-12-120 Circular Concrete Storage Facility 12’ deep x 120’ Maximum Diameter CT-14-90Circular Concrete Storage Facility 14’ deep x 90’ Maximum Diameter CT-14-120 Circular Concrete Storage Facility 14’ deep x 120’ Maximum Diameter Construction Drawings for Circular Storage Facilities with Ramps Details: NCT-8-120 Notched Wall With Ramp 8’ deep x 120’ Maximum Diameter NCT-10-120 Notched Wall With Ramp 10’ deep x 120’ Maximum Diameter NCT-12-120 Notched Wall With Ramp 12’ deep x 120’Maximum Diameter NCT-1D Steel Reinforcement Around Notch NCT-2D Profile Of Ramp NCT-3D Ramp Wall Sections and Details NCT-4D Ramp Elevation View and Details Construction Details For All Circular Storage Facilities Details: CT-1D Steel Splicing And Vertical Wall Joint Details CT-2D Loading And Unloading Pad Detail CT-3D Pipe Protruding Through Wall Detail CT-4D Wall BackFill Details

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1-5 6-78 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

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Design Guide MD#2 Circular Concrete Storage Facilities NRCS Engineering, Maryland December, 2004 Page i

SECTION I
GENERAL
This design guide is a technical resource prepared by the Maryland NRCS Engineering staff and is intended for use by the NRCS in Maryland and its partners. The circular concrete storagefacility designs contained in this design guide replace all existing prequalified circular concrete designs previously issued. These new prequalified designs are to be used as part of a sitespecific design. Designs previously submitted by outside vendors and concurred in for use in Maryland are not affected by this design guide and may still be used. These prequalified designs are contained in DesignGuide #7. Construction drawings for walls of various heights and diameters are included, as well as other appropriate construction details and specifications. Section II contains the construction specifications to be used as part of the site-specific design. These construction specifications are to be used for all the circular concrete storage facilities. Add site specific constructionspecifications as needed. Section III contains wall and footing construction details for circular concrete storage facilities without ramps. Wall heights vary from 8 feet to 14 feet with available diameters up to 120 feet. Section IV contains wall, footing, and ramp construction details for circular storage facilities with notched walls and ramps. Wall heights vary from 8 feet to 12 feet with availablediameters up to 120 feet. Section V contains construction details for loading and unloading pads and other details specific to circular storage facilities. Occasionally there may be a need to construct a circular storage facility with a wall height less than 8 feet. Minor adjustments will be needed in the design. Contact the local NRCS engineer for the needed changes. To aid in the design process, thedrawings and specifications are available in AutoCAD format at the Maryland NRCS State Office and the Frederick Staff Office. No changes are allowed on these details without prior approval from the NRCS engineering staff.

DESIGN
The design procedure is based on Circular Concrete Tanks Without Prestressing (1993) developed by the Portland Cement Associations (PCA) and complies with the Building...