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preferred by AR.
3.7.1.3.1 Exterior walls will be concrete masonry or steel studs with a
masonry veneer. Concrete masonry is preferred due to durability and
stiffness for masonry veneer backup. If studs are considered for
masonry veneer backup, design should limit stud lateral deflection to
L/600. AT/FP requirements restrict the use of load-bearing concrete
masonry and load bearing steel stud walls for multistory structures
(three stories or more, not including the basement, if applicable).
steel roof deck. Depending on local soil conditions, the lower level
floor is reinforced concrete slab on grade or structurally reinforced
concrete slab. The remaining levels consist of either steel form deck
filled with concrete supported by steel bar joists, steel beams and
columns or precast plank supported on load-bearing concrete
masonry walls. Depending on requirements for fireproofing,
composite steel beams may be an alternative to steel bar joists in the
above-mentioned systems. Consider pre-engineered buildings for
unheated storage structures. AR strongly prefers tube columns for
ease of detailing and fit within exterior walls.
3.7.2 Design Loads
3.7.2.1 The following are minimum design loads. Some local building
codes or design requirements may be more stringent and will take
precedence.
3.7.2.2 Gravity Loads
Roof live load
1.0 kPA
( 20 psf)
Snow load (governs if greater than the minimum
Roof live load of 1.0 kPA above)
refer to TI 809-01
Floor live loads (in accordance with ASCE 7)
Assembly/waiting rooms
4.8 kPA
(100 psf)
Classrooms
1.9 kPA
( 40 psf)
Corridors (2nd floor)
3.8 kPA
( 80 psf)
Day rooms/lounge
2.9 kPA
( 60 psf)
Latrines/locker rooms
3.6 kPA
( 75 psf)
Library/reading rooms
2.9 kPA
( 60 psf)
Light storage
6.0 kPA
(125 psf)
Mechanical room (air conditioning)
6.0 kPA
(125 psf)
Mech. equip. room (general)
4.8 kPA
(100 psf)
UFC 4-171-05
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