SECTION K

 

 

                       FEED STORAGE STRUCTURES

 

 


                                                                   CONTENTS

 

 

 

Section                                                                                                                                 Page

 

 

   K1             FEED STORAGE STRUCTURES                                                                       K.i

 

Approximate Corn Silage Storage Capacity of Tower

Silos in Tons (upright Silos at 65 percent moisture)                              K1.1

Approximate Dry Matter Capacity of Silos in Tons                                      K1.3

Capacity of Silos for 30% Moisture Shelled Corn, In Tons                         K1.3

Amount of Silage in 2" and 3" Layers in Tower Silos                                  K1.4

Horizontal Silo Capacity, Wet Tons                                                             K1.5

Horizontal Silo Capacity, Dry Matter                                                           K1.5

Suggested Bunker and Trench Silo Sizes                                                   K1.6

Dimensions, Cross‑Sectional Area of Bunker and

Trench Silos and Weight of Silage in 4‑inch

Slice and Per Linear Foot                                                                      K1.7

Volume of Cylindrical Storage, Per Foot of Depth

(Bushels of Grain)                                                                                 K1.8

Ear Corn Crib Capacities in Bushels per Linear Foot                                 K1.9

Ear Corn Cribs ‑ Recommended Widths                                                   K1.10

Approximate Grain Capacities of Semicircular

Building Per Foot of Length                                                                 K1.10

Approximate Hay Capacity for Semicircular Cross‑

Section Building (Tons Per Foot of Length)                                        K1.10

Approximate Hay Capacity for Straight Sidewall

Storages, Tons Per Foot of Length                                                     K1.11

Approximate Storage Space Requirements for Forage

and Bedding Materials                                                                        K1.12

Bushels of Shelled Corn Remaining From

1000 Bushels of High Moisture Corn if

Dried to 15.5% Moisture Content                                                        K1.13

Storage Volumes for Bulk Materials                                                          K1.14

Capacities of Hopper Bottom Bins                                                            K1.15


 

 

 

 

 

 

 

 

 

 

 

                                                              SECTION KI

 

 

                       FEED STORAGE STRUCTURES

 

 

 


 

 

                                     Table K1.1:  Approximate Corn Silage Storage Capacity of Silo in Tons

                                                                           (upright Silos at 65 percent moisture1)

 


   Silo                                       Silo Diameter (feet)

  Height 

   Feet             10           12             14             16             18             20             22             24 26    28      30

 

 


      20           22.9          34.3          45.8          60.1          77.2          94.4        114.4        134.4 160.2         185.9        211.6

      24           31.5          42.9          60.1          77.2          97.2        123.0        148.7        174.5 205.9         237.4        274.6

      28           37.2          54.3          74.4        100.1        125.8        151.6        183.0        217.4 257.4         297.4        340.3

      32           45.8          65.8          91.5        117.3        148.7        185.9        223.1        266.0 311.7         363.2        414.7

      36           54.3          80.1        105.8        137.3        177.3        217.4        263.1        311.7 368.9         429           491.9

      40           62.9          91.5        125.8        163.0        205.9        254.5        306.2        363.2    429         494.8        569.1

      44              -           105.8        143           185.9        234.5        291.7        351.8        420.4 491.9         572           654.9

      48              -           120.1        160.2        211.6        266.0        328.9        400.4        474.8 557.7         646.7        743.6

      52              -                -           183.0        237.4        300.3        368.9        449.0        532.0 626.3         726.4        832.3

      56             -                -           203.1        263.2        334.6        411.8        497.6        592.0 695.0         806.5        926.6

      60              -                -           223.1        291.7        368.9        454.7        549.1        652.1 780.8         888.7     1,021.0

      64              -                -                -                -           406.1        497.6        600.6        715 852.3         972.4     1,118.3

      68              -                -                -                -           443.3        543.4        652.1        777.9 926.6      1,058.2     1,215.5

      72              -                -                -                -                -                -                -           838.0 1,001      1,144        1,309.9

      76              -                -                -                -                -                -                -           898.0 1,075.4     1,221.2     1,398.5

      80              -                -                -                -                -                -                -           955.2 1,121.1     1,301.3     1,487.2

      84              -                -                -                -                -                -                -                - 1,206.9     1,387.1     1,573

      88              -                -                -                -                -                -                -                - 1,278.4     1,472.9     1,653.1

      92              -                -                -                -                -                -                -                - 1,367.1     1,550.1     1,738.9

      96              -                -                -                -                -                -                -                - 1,435.7     1,635.9     1,821.8

    100              -                -                -                -                -                -                -                 1,510.1     1,721.7     1,924.8


                                                 Table K1.2:  Approximate Dry Matter Capacity of Silos in Tons*

 


   Silo                                                                   Silo Diameter (feet)

  Height 

   Feet               10             12             14             16             18               20             22             24      26               28             30

 

 


     20                 8             12             16             21             27               33             40             47     56                65             74

     24                11             15             21             27             34               43             52             61     72                83             96

     28                13             19             26             35             44               53             64             76     90              104           119

     32                16             23             32             41             52               65             78             93   109              127           145

     36                19             28             37             48             62               76             92           109   129              150           172

     40                22             32             44             57             72               89           107           127   150              173           199

     44                   -             37             50             65             82             102           123           147   172              200           229

     48                  -             42             56             74             93             115           140           166   195              226           260

     52                  -               -             64             83           105             129           157           186   219              254           291

     56                  -               -             71             93           117             144           174           207   243              282           324

     60                  -               -             78           102           129             159           192           228   273              309           357

     64                  -               -               -               -           142             174           210           250   298              340           391

     68                  -               -               -               -           155             190           228           272   324              370           425

     72                  -               -               -               -               -                -               -           293   350              400           458

     76                  -               -               -               -               -                -               -           314   376              427           489

     80                  -               -               -               -               -                 -                -           334   392              455           520

     84                  -               -               -               -               -                -               -               -   422              485           550

     88                  -               -               -               -               -                -               -               -   447              515           578

     92                  -               -               -               -               -                -               -               -   478              542           608

     96                  -               -               -               -               -                -               -               -   502              572           637

   100                  -               -               -               -               -                -               -               -   528              602           673

 

 


  * Capacities allow one foot unused depth for settling in silos up to 30 ft. high, and one additional foot for each 10 ft. beyond 30 ft. height.

 

Tons of moist silage = tons of dry matter times dry matter factor.

 

Dry matter factor = 100/(100 % moisture


         Table K1.3:  Capacity of Silos for 30% Moisture Shelled Corn, In Tons*

 


   Silo                                                        Silo Diameter (feet)

  Height             

   Feet                          10             12           14           16           17           18           20

 


    20                            36             52           71            93        105         118          145

 

     22                           40             58           79         103         116         130         160

 

     24                           44             63           86         112         126         142         175

 

     26                           47             68           93         122         138         154         190

 

     28                           51             74         100         131         148         166         205

 

     30                           55             79         108         141         159         178         220

 

     32                           58             84         115         150         169         190         234

 

     34                             -            90         122         161         182         202         249

 

     36                             -            95         130         169         191         214         264

 

     38                             -           101         137         179         202         226         279

 

     40                             -           106         144         188         212         238         294

 

     42                              -               -         152         198         223         250         309

 

     44                             -               -         159         207         234         263         324

 

     46                             -               -         166         217         245         275         339        

 

     48                             -               -           74         227         256         287         354

 

     50                             -               -             -         236         266         299         369

 

     52                             -               -             -         246         278         312         385

 

     54                             -               -             -         256         289         324         401

 

     56                             -               -             -         266         300         337         416

 

     58                             -               -             -         276         312         350         432

 

     60                             -               -             -         287         324         363         448

*Tonage will increase approximately 5% with moisture content from 25 to 35%.


 

                           Table K1.4:  Amount of Silage in 2" and 3" Layers in Tower Silos*

 

 


2" Layer                                            3" Layer

 Inside Diameter  

     (Feet)                                       Cu. Ft.                  Pounds                 Cu. Ft.   Pounds

───────────────────────────────────────────

 

            6                                          20.0                         34                      30.0                        51

 

          12                                          18.8                       940                      28.2                    1410

 

          14                                         25.7                     1283                      38.5                    1925

 

          16                                         33.5                     1675                     50.2                    2510

 

          18                                          42.4                     2120                      63.6                    3180

 

          20                                         52.4                     2620                     78.5                    3930

 

          22                                          63.4                     3170                     95.0                    4750

 

          24                                          75.5                     3770                    113.0                    5650

 

          26                                          88.5                     4430                    132.5                    6645

 

          28                                        102.5                     5125                    154.0                    7700

 

          30                                        118.0                     5900                    176.5                    8850

───────────────────────────────────────────

 

 *When silage averages 50 pounds per cubic foot.

 


Table K1.5:   Horizontal Silo Capacity, Wet Tons Per 10 Feet of Length               

                       @ 40 Pounds/Foot3 (Level Full)

 


Depth                                                  Silo Width                                              

Feet                 10          15          20          25          30          35          40           45       50

 

 

10                    20          30          40         50         60          70          80           90     100

 

12                    24          36          48         60         72         84         96         108     120

 

14                    28          42          56         70         84         98        112         126     140

 

16                    32          48          64         80         96        112        128         144     160

 

18                    36          54          72         90        108        126        144         162     180

 

20                    40          60          80        100        120        140        160         180     200

 

 

 

 

 

 

 


Table K1.6:   Horizontal Silo Capacity, Dry Matter Tons Per 10 Feet of Length @ 14 Pounds/Foot3 (Level Full)

 


      Depth                                                                     Silo Width                                                      

      Feet                    10          15          20          25          30          35          40           45         50

 

 

10                  7          10.5       14          17.5       21          24.5       28           31.5       35

 

12                  8.4       12.6       16.8       21          25.2       29.4       33.6        37.8       42

 

14                  9.8       14.7       19.6       24.5       29.4       34.3       39.2        44.1       49

 

16                 11.2       16.8       24.4       28          33.6       39.2       44.8        50.4       56

 

18                 12.6       18.9       25.2       31.5       37.8       44.1       50.4        56.7       63

 

20                 14          21          28          35          42          49          56           63          70

 

 


 

 


                                  Table K1.7:  Suggested Bunker and Trench Silo Sizes*

 

 


Silo Length (ft.) For                    Approximate

Number                      Width                                Feeding Season of:                        Capacity

  of                  Bottom      Top         Depth            140      175      210                    per Linear Foot

 Cows             (Feet)      (Feet)      (Feet) Days    Days    Days                                   (Tons)

 

 


10**                 8           11              6                 27        34        41                             1.0

 

15                   8           11              6                41       51       61                            1.0

 

20                   8           12              8                38       48       58                            1.4

 

25                   8           12              8                48       60       72                            1.4

 

30                  10           14              8                48       60       72                            1.7

 

40                  12           16              8                55        69       83                            2.0

 

50                  12           16              8                69       86      103                            2.0

 

75                  12           16              8               103      129      155                            2.0

 

 100                  16           20              8               107      134      160                            2.5

 

 


 *  Based on settled silage weighing 35 pounds per cubic foot and a daily feeding rate of 35 pounds per cow.  An allowance of 10% is made for spoilage and wastage.

 

** Less than a 3-inch slice removed daily.


Table K1.8:   Dimensions, Cross-sectional Area of Bunker and Trench Silos and Weight of Silage in 4-inch Slice and Per Linear Foot1

 

 


Side Slope Per Foot of Depth (inches)

Depth

Bottom Width

Top Width

Cross-sectional Area

Weight of Silage

4-Inch Slice

1-Foot Slice

 

Feet

Feet

Feet

Inches

Square Feet

Pounds

Pounds

 

4

6

7

0

26.0

346

1040

 

4

10

11

0

42.0

560

1680

 

6

8

9

6

52.5

700

2100

 

6

12

13

6

76.5

1015

3060

 

8

10

12

0

88.0

1173

3520

 

8

14

16

0

120.0

1600

4800

 

10

12

14

6

132.5

1767

5300

1 1/2

10

16

18

6

172.5

2300

6900

 

4

6

8

0

28.0

373

1120

 

4

10

12

0

44.0

587

1760

 

6

8

11

0

57.0

760

2280

 

6

12

15

0

81.0

1080

3240

 

8

10

14

0

96.0

1280

3840

 

8

14

18

0

128.0

1767

5120

 

10

12

17

0

145.0

1933

5800

3

10

16

21

0

185.0

2467

7400

 

4

6

8

8

29.0

387

1160

 

4

10

12

8

45.2

603

1808

 

6

7

11

0

54.0

720

2160

 

6

12

16

0

84.0

1120

3360

 

8

10

15

4

102.7

1369

4180

 

8

14

19

4

134.7

1796

5388

 

10

12

18

8

153.3

2044

6132

4

10

16

22

8

193.3

2577

7732

 

 


1For silage weighing 40 pounds per cubic foot.


 

 

 

                                                                                                                                      

 

             

                         Table K1.9:  Ear Corn Crib Capacities in Bushels per Linear Foot**

 

(Based on 2-1/2 cubic feet of ear corn required to yield  1 bushel of shelled  corn.)

 


Depth of Corn        (in feet)

Width of Crib in Feet

 

 

 

 

 

 

6

7

8

9

10

11

5

12.00

14.00

16.00

18.00

20.00

22.00

6

14.40

16.80

19.20

21.60

24.00

26.40

7

16.80

19.60

22.40

25.20

28.00

30.80

8

19.20

22.40

25.60

28.80

32.00

35.20

9

21.60

25.20