ue>the Internet Archive. Yahoo! is not affiliated with the authors of this page or responsible for its content.
MO-FLEX GROW-FINISH BUILDING PLAN MO-FLEX GROW-FINISH
BUILDING PLAN
Plan No. MO1-726-94C1
Developed by:
Joseph M. Zulovich, Ph.D., P.E.
Commercial Agricultural Engineer
Animal Structures Specialist
University Extension - Commercial Agriculture Program
Agricultural Engineering Department
University of Missouri
© 1995 University of Missouri ii
WARRANTY DISCLAIMER:
The plan contained herein provides drawings and recommendations for the grow-finish building
only. The drawings and recommendations are for a building based on 1994 Missouri structural
requirements. NEITHER THE UNIVERSITY OF MISSOURI, UNIVERSITY EXTENSION NOR
THE COOPERATIVE EXTENSION SERVICE, OR THEIR RESPECTIVE AGENTS OR
EMPLOYEES, HAVE MADE, AND DO NOT HEREBY MAKE, ANY REPRESENTATION,
WARRANTY OR COVENANT WITH RESPECT TO THE DRAWINGS OR
RECOMMENDATIONS HEREIN. Additional professional services will be required to tailor this
plan to your situation, including but not limited to:
assurance of compliance with local codes and regulations;
development and/or review of specifications for materials and equipment;
selection of proper site providing adequate natural resource base;
supervision of site preparation, bid letting and construction;
development of a manure storage system and nutrient management plan;
and provisions for utilities, roads and/or other access. iii
TABLE OF CONTENTS
Page
WARRANTY DISCLAIMER
ii
Acknowledgments
v
Sizing a MO-Flex Grow-Finish Building
1
Management Considerations
1
Pen Size Impact
2
Manure Removal Impact
2
Multiple Rooms and Load-out Rooms
3
Available Building Sizes
3
Structural Specifications for a MO-Flex Grow-Finish Building
5
Structural Lumber Specifications
5
Ceiling Construction
5
Truss Selection
6
Truss Erection
6
General Concrete Specification
7
Reinforcing Steel Requirements
7
Concrete Finishes
8
Concrete Slat Requirements
8
Insulation Requirements
8
Vapor Retarder Requirement
8
Interior Surfaces
8
Exterior End Walls
9
Interior Partition Walls
9
Post Frame Bracket Installation
9
Insulated Roof Construction
10
Manure Removal System Management
11
Flush Systems
11
Pit Recharge Systems
11
Hairpin Gutter Systems
11
Ventilation Specifications for a MO-Flex Grow-Finish Building
12
Sidewall Curtain Information
13
Ventilation Specifications for Flat Ceiling with Flushing Option
13
Ventilation Specifications for Open Ridge with Flushing Option
15
Ventilation Specifications for Flat Ceiling with
Under Alley Plenum Option
16
Ventilation Specifications for Flat Ceiling
with Hairpin Gutter Option
17 iv
Specifications for Heat Stress Relief Systems
19
Specifications for Attic Ventilation and Opening Requirements
19
Specifications for Heater Requirements
20
Plumbing and Electrical Information
21
ADDITIONAL RESOURCES
22
APPENDICES
A. Missouri Siphon Flush Tanks
24
B. Flush Gutter Water Trap
27
C. Anaerobic Lagoon Systems
28
Submerged Inlet into Lagoon
29
Surface Inlet into Lagoon
30
Wet Well Installation for Lagoon Recycle Pump
31
D. Concrete Manure Storages
32
E. Fan Sizes for Flat Ceiling with Flushing Option
33
F. Fan Sizes for Flat Ceiling with Hairpin Gutter Option
36
G. Pit Ventilation Pipe Designs for Hairpin Gutters
39 v
Acknowledgments
The author, Joe Zulovich, would like to acknowledge the help of other Commercial
Agriculture Swine Team members during the development of this plan. John Hoehne, Commercial
Agricultural Engineer (Animal Waste Specialist) and Charles Fulhage, Extension Agricultural
Engineer, added input to the manure handling portions of the plan as well as reviewing several other
portions of the plan during development. Rick Tubbs, Commercial Agriculture Swine Veterinarian,
added input to the management and operational parameters of this plan. Rex Ricketts, Director of
the Commercial Agriculture Program, provided a significant amount of additional funding which
was used to obtain additional engineering drafting help to complete the drawing portions of the plan. 1
MO-Flex Grow-Finish Building Plan
Version 1.0
MO-FLEX GROW-FINISH BUILDING PLAN
The MO-Flex Swine Building System was developed to provide Missouri's independent swine
producers with a comprehensive, standardized building plan package using current technology. The
MO-Flex Grow-Finish Building is one production stage in the MO-Flex Swine Building System.
Plan packages have been developed for each of the four stages of swine production; farrowing,
nursery, grow-finish, and breeding-gestation. A plan package includes 20 - 17" x 22" sheets of
construction drawings and a manual. The drawings show how a building should be built. This
accompanying manual provides additional construction and specification details as well as a
discussion of the design, operation and maintenance requirements of the building system.
Sizing a MO-Flex Grow-Finish Building
The number of head a grow-finish building holds will depend upon the group size and schedule of an
operation. The number of rooms a building will have depends not only on the group size and
schedule but also on the available building site and other needs of an operation.
Management Considerations
All-in/All-out management (AIAO) should be planned for with any new grow-finish building.
AIAO reduces the risk of disease because a given room or building is emptied and cleaned before
any new pigs are brought into the room. Planning building sizes to include AIAO management
requires not only the size of group or batch of pigs but also the age difference between pigs in a
single air space. A single air space is a building or room within a building that is operated as one
continuous space for a group of pigs.
For a "closed" farrow-to-finish operation (an operation that does not bring in any weaner or feeder
pigs), the batch or group size is the number of pigs weaned as a group. In the grow-finish stage of a
closed operation, batches or groups of pigs coming from the nursery stage could be grouped together
if the age difference is not to large. About a two week maximum age difference between the oldest
and youngest pig should be allowed within a single grow-finish air space. If a weekly production
schedule (weaning every week) is used, no more than two weeks of production should be housed
within a single air space. If groups of pigs are produced less frequently than weekly, separate rooms
for each group should be considered for grow-finish facilities. For an operation "assembling" feeder
pigs to fill grow-finish facilities, the batch or group size is the number of pigs required to fill a given
grow-finish air space. The batch of pigs should be close in age and be obtained from a single
source. Mixing pigs of different ages and/or from different sources should be avoided. AIAO
management is usually easy to implement because new pigs are not brought in until the previous
group is removed and the building is cleaned. When considering the size of a grow-finish building
for this type of operation, the capacity of the facility should be sized to easily facilitate shipping
either to load a facility or to market the pigs. Generally, grow-finish facilities assembling feeder
pigs size facilities in increments of 200 pigs per air space (ie. 200, 400, 800 or 1000 head per air 2
MO-Flex Grow-Finish Building Plan
Version 1.0
space).
In summary, a grow-finish building should be sized for groups of pigs being produced or assembled
on a given schedule. If similar group sizes produced or assembled on a given schedule, grow-finish
buildings can easily be properly sized and managed to include AIAO management.
Pen Size Impact
The MO-Flex Grow-Finish Building Plan uses 10' by 19' pens down each side of a nominal 40-foot
wide, totally slatted building. The 10' by 19' pens are sized to hold 20 to 25 pigs and provide 9.5 to
7.6 ft
2
gross pen area per pig. A particular building can have any number of individual rooms as
required by a corresponding production system. The building length can be varied depending upon
total pig capacity, but the final building length needs to be evenly divisible by four to optimize
material usage.
Manure Removal Impact
Manure should be removed from any swine building on a regular basis. When manure is removed
from the building on a frequent basis, the ventilation system can be simplified because pit ventilation
(air removal from manure/waste storage area) is not needed to help maintain indoor air quality.
Flushing under slats is the preferred manure removal system. No pit ventilation is required if
flushing frequency for each gutter in a building is two hours or less. The flush system selected will
have an impact on building length. Flush systems using flush tanks located inside the building
require additional building length. A number of pen capacity combinations are not evenly divisible
be four, so the additional space needed for flush tanks is usually not much of an issue. A siphon
flush tank design (MO Siphon Tank) developed by Agricultural Engineering at the University of
Missouri is included with this plan. This MO Siphon Tank is constructed as a