1. GENERAL
1.1
SCOPE
1.1.1
These
specifications delineate the design criteria, material quality and
fabrications processes used in metal building systems designed,
manufactured, and furnished by Delta Steel Buildings Company (tm).
1.1.2
Delta
utilizes those standards, specifications and/or interpretations and
recommendations of professionally recognized groups and agencies, such
as MBMA, AISC, AISI, AWS, and ASTM as the basis in establishing its own
design, fabrications and quality criteria, standards, practices,
methods, and tolerances.
1.2
MATERIALS
Standard
material furnished for Delta Metal Building Systems shall include
primary and secondary structural framing members, bracing metal panels
for roofing and siding, flashings, fasteners, sealants, accessories and
all other miscellaneous component parts required for a complete
building (except that anchor bolts and other embedded items
are excluded).
2. DESIGN
2.1 GENERAL
2.1.1
All
structural steel sections and welded plate members shall be designed in
accordance with the applicable sections, relating to design
requirements and allowable stresses, of the latest edition of the
American Institute of Steel Construction (AISC) "Specification for the
Design, Fabrication and Erection of Structural Steel
for Buildings."
2.1.2
All
light-gage, cold formed, structural members and covering shall be
designed in accordance with the applicable sections, relating to design
requirements and allowable stresses, of the latest edition of the
American Iron and Steel Institute (AISI) "Specifications for the Design
of Cold Formed Steel Structural Members."
2.2
DESIGN
LOADS
2.2.1
Design
load requirements shall be determined by local conditions, applicable
codes, building end use, etc. Magnitude of design loads shall be
specified by the contract documents. Application of design loads shall
be in accordance with the Design Practices sections of the Metal
Building Manufacturers Association (MBMA) 1986 "Low Rise Building
Systems Manual", unless specified otherwise.
2.2.2
Specified design loads shall be considered to act in various
combinations so as to produce the most unfavorable effect on the
building or structural member concerned. Unless otherwise specified,
load combinations shall be those listed in the Design Practices
sections of the MBMA 1986 "Low Rise Building Systems Manual."
3.
STRUCTURAL FRAMING
3.1 PRIMARY MEMBERS
3.1.1
Primary
structural framing shall refer to the Primary Frames (transverse rigid
frames and Lean-to rafters/columns), expandable and non-expandable End
Frames (rafters/corner posts/end posts), Wind/Seismic Bracing and
Crane systems.
a. Members fabricated from plate, plate coils, strip mill plate or flat
bar stock shall have flanges and webs joined one side of the web by a
continuous welding process. All material shall have a minimum yield
strength of 50,000 psi. Material will conform to physical
specifications of the following ASTM specifications: plate (ASTM A-572,
Gr. 50); plate coils and strip mill plate (ASTM A-570, Gr. 50); and
flat bar (ASTM A-36, Modified 50).
b. Members fabricated from W shapes (hot-rolled structural sections)
will conform to the physical specifications of ASTN A-36 except that
steel shall have a minimum yield strength of 42,000 psi.
c. Members fabricated from other hot-rolled structural sections (S
shapes/American Standard channels/angles/rods for anchor bolts/all
other miscellaneous structural shapes) shall have a minimum yield
strength of 36,000 psi and will conform to the physical specifications
of ASTM A-36.
d. Interior columns of multi-span frames will be fabricated from round
pipe sections which have a minimum yield strength of
50,000 psi.
e. Rods used for bracing will conform to the physical specifications of
ASTM A-36 except that steel shall have a minimum yield strength of
50,000 psi.
f. Cables used for bracing shall be zinc coated steel wire (7 strands)
extra high strength grade.
g. Members fabricated by cold forming process shall have a minimum
yield strength of 55,000 psi and will conform to the physical
specifications of ASTM a-570.
3.2
SECONDARY
MEMBERS:
3.2.1
Secondary structural framing shall refer to purlins, girts, eave
struts, base members, flange bracing, gable angles, clips and other
miscellaneous structural parts.
a.
Purlins,
girts, eave struts, base members and gable angles shall be cold formed
from steel which has am minimum yield strength of 55,000 psi and will
conform to the physical specifications of ASTM A-570.
1. Purlins are roll formed "Z" sections, 81/2" or 10" deep. Each flange
of these "Z"s has a stiffening lip formed at 50° to
the flange.
2. Girts are roll formed "Z" or brake formed "C" sections 61/2" or
81/2" deep. Each flange of these members has a stiffening lip formed at
50°to the flange on "Z"s and at 90° on "C's.
3. Eave struts are roll formed "C" sections, 81/2" deep with 31/4" wide
top and bottom flanges. Flanges are formed at angles other than
90° to
the web to accommodate various roof slopes. Each flange has a
stiffening lip formed at 90° to the flange.
b. All other miscellaneous secondary members shall have a minimum yield
strength of 36,000 psi.
3.3
CONNECTIONS
3.3.1
All
field connections shall be bolted (unless otherwise noted).
3.3.2
All
shop connections shall be welded using either submerged or shielded arc
process, and welding shall be in accordance with the applicable
sections, relating to design requirements and allowable stresses, of
the latest editions of the American Welding Society "Structural
Welding Code."
3.4
STRUCTURAL PAINTING
All
framing
members shall be cleaned to remove loose rust and mill scale, and given
one shop coat of red color, air drying, alkyd zinc chromate primer.
Cleaning process shall meet or exceed Steel Structure Paint Council
Specification SSPC-SP2 for Hand Tool Cleaning. Primer shall be
formulated to equal or exceed performance, under laboratory conditions,
requirements of U.S. Federal Specification TTP-636. The primer coat
thickness shall be a minimum of one mil.
4. ROOF
AND WALL
COVERING
4.1 GENERAL
4.1.1
Standard covering for roofs or walls shall be a ribbed type panel
having 36 inch net coverage. These panels shall be 26 gage, Galvalume
steel, with or without a color coating. At Delta's option, substrate
for color coated panels may be galvanized steel sheet in lieu
of Galvalume.
4.1.2
Premium
covering for roofs shall be a standing seam panel having up to 30 inch
net coverage. These panels shall be 24 gage, Galvalume steel with or
without a color coating ("White" or "Brown").
4.1.3
Premium
covering for walls shall be a concealed fastener panel having up to 18
inch net coverage. These panels shall be 24 gage, Galvalume with a
color coating. At Delta's option, substrate for these panels may be
galvanized steel sheet in lieu of Galvalume.
4.1.4
All
panels, both standard and premium, shall be precision roll-formed to
the required configuration.
4.1.5
Roof
and wall panels of other materials and thicknesses are available
upon request.
4.2
PANEL
MATERIALS:
4.2.1
Galvalume is a specialty steel sheet product with a patented coating of
corrosion resistant, aluminum-zinc alloy applied by a continuous hot
dipping process. Typical coating weight is 0.5 oz. per square foot of
coated sheet (both sides) - equivalent to approximately 0.8 mil
thickness on each side. Galvalume steel panels shall have a minimum
yield strength of 50,000 psi (exception: SUR panels have 37,000 psc
yield strength) unless otherwise specified. Galvalume steel will
conform to ASTM specification A-792.
4.2.2.
Galvanized steel has a corrosion resistant zinc coating applied by a
hot dip galvanization process conforming to ASTM Specification A-525
with a coating class of G-90; i.e. 0.90 oz. per square foot of coated
sheet (both sides) - equivalent to approximately 0.85 mil thickness on
each side. Base metal for galvanized panels shall have a minimum yield
strength of 50,000 psi unless otherwise specified, and will conform to
the physical specifications of ASTM A-446.
4.2.3
Color
coated panels shall have the exterior side finished with a silicone
polyester*, coating system applied over the Galvalume or galvanized
substrate. Surface shall be chemically cleaned, pre-treated, primed and
coated, then oven baked to cure. Total coating system shall have a one
mil dry film thickness. The interior side of these panels shall be
protected by a wash coat of primer applied at 0.5 mil dry film
thickness. Panels shall be coated prior to roll forming.
*Note:
When
white color is specified, finish shall be a polyester (in lieu of
silicone polyester) coating system.
4.3
PANEL
CONFIGURATIONS AND FINISHES
For
panel
configurations and finishes refer to card titled "Panel
and Trim Colors" and "Panel Profiles"
4.4
FLASHING,
TRIM & CLOSURES
4.4.1
Flashing and/or trim shall be furnished at eaves, rake, corners, base,
framed openings and wherever necessary to seal against the weather and
provide a finished appearance. Color shall be selected from Delta's
standard panel colors except for rake trim. Standard colors for this
item are "White" or "Burnished Slate" although other colors are
available by special request. Profiles and dimensions of all
flashing/trim will be Delta's standards.
4.4.2
Eave
gutters and downspouts may be specified as optional. Gutters are box
shaped with face profile shaped to match rake trim. Downspouts are
rectangular shaped (2 7/8" x 41/4" min. size) and shall have a 45
degree elbow at the bottom. Standard colors for eave gutters are
"White" or "Burnished Slate" although other colors are available by
special request. Color for downspouts shall be selected from Delta's
standard panel colors.
4.4.3
Color
coated, Galvalume or galvanized steel for flashing, trim, metal
closures, downspouts and other miscellaneous uses shall be 26 gage
thickness of the same specification as the roof and wall
covering material.
4.4.5
Material used for Base Angle/Trim member shall be color coated, 18
gage, galvanized steel, 36,000 yield strength. Color shall be
"Burnished Slate".
4.4.6
Preformed, closed cell, polyethylene closure strips matching the
profile of the panel shall be installed along the eave and at other
locations to provide weathertightness when shown on Delta's
erection drawings.
4.5
FASTENERS
4.5.1
Standard wall fasteners shall be No. 12, self-drilling carbon steel
screws with an integral, hex-washer head, and without a sealing washer.
Minimum length of fasteners shall be 11/4 inches for
panel-to-structural application and 3/4 inches for
stitch screws.
Optional
wall
fasteners shall be No. 14 self-tapping, carbon steel screws with an
integral, hex-washer head, and without a sealing washer. Minimum length
of fasteners shall be 1 inch for both panel-to-structural and stitch
applications. Both standard and optional wall fasteners shall have a
corrosion-resistant coating applied for long term protection. Fasteners
shall be painted to match panel and/or trim color.
4.5.2
Standard roof fasteners shall be No. 12 self-drilling carbon steel
screws with an "extended life" hexagon head that is compatible with
Galvalume or color coated panels, A sealing washer shall be provided.
Minimum length of fasteners will be 11/4 inches for panel-to-structural
applications and 3/4 inches for stitch screws. Optional roof fasteners
shall be No. 12 self-tapping, carbon steel screws with an "extended
life" hexagon head that is compatible with Galvalume or color coated
panels. A sealing washer shall be provided. Minimum length of fasteners
shall be 1 inch for both panel-to-structural and stitch applications.
"Extended life" heads will be either a zinc/aluminum/manganese alloy
casting or a 302 stainless steel cap over the carbon steel head, at
Delta's option. when used with color coated material, fasteners shall
be painted to match panel and/or trim color.
4.6
SEALANTS
4.6.1 Sealants for sidelaps, endlaps, accessories, etc. shall be a
preformed, butyl rubber based compound. The material shall be
non-hardening, non-shrinking and non-corrosive and shall have excellent
adhesion to metals, painted surfaces and plastics at temperatures from
-30°F to 160°F. These sealants shall be in tape mastic
form, of shape
and size recommended be Delta for various applications, and shall have
paper backing for easy handling.
4.6.2
Tube
sealants shall be used to supplement tape mastic sealants and shall be
applied in locations indicated by erection instructions. Tube sealant
shall be a synthetic elastomer based material which becomes tack-free
in less than 2 hours at 75°F but retains flexibility.
4.7
INSTALLATION OF WALL AND ROOF PANELS
4.7.1
Wall
panels shall be continuous from base to eave provided panel length does
not exceed 30 feet. If higher eave heights are specified, panels shall
be spliced, at Delta's option, by lapping or by a band of flashing. A
splice shall occur over a wall girt.
4.7.2
Roof
panels shall be continuous from eave to ridge provided panel length
does not exceed 42 feet. If this length is exceeded, panels shall be
spliced by lapping a minimum of 5 inches. These endlaps shall occur at
a roof purlin. Sealant shall be used in all roof
panel endlaps.
4.7.3
When
specified, all ribbed, roof panel sidelaps shall be sealed with a field
applied, continuous ribbon of tape mastic sealant. Eave shall also be
sealed when specified.
4.7.4
Fastener population and pattern for both wall and roof panels shall be
as shown on erection drawings.
4.8
UNDERWRITERS LABORATORIES UPLIFT RATINGS
By
increasing
roof fastener population and changing installation pattern, certain
Delta roof panels will obtain an Underwriters Laboratories wind up lift
classification of Class 30, Class 60 or Class 90. UL uplift ratings may
be specified on the following roof panels:
"A" with up to 4" blanket
type
insulation:
|
UL30
|
UL60
|
UL90
|
"R" with up to 6" blanket
type
insulation:
|
UL30
|
UL60
|
UL90
|
"U" with up to 3" blanket
type
insulation:
|
UL30
|
UL60
|
UL90
|
"WSII" with up to 6" blanket
type
insulation:
|
UL30
|
UL60
|
UL90
|
5.
ACCESSORIES
5.1 PERSONNEL DOORS
5.1.1
Personnel (walk) door leaves shall be Ceco, full flush hollow metal
doors, 1 3/4 inches thick with 20 gage, G-60 galvanized skins
over
a kraft honey-comb core. Leaf shall be reversible to work with
non-handed door frames.
5.1.2
Personnel (walk) door frames shall be Ceco Non-handed (reversible)
frames, 5 3/4 inches deep with a 2 inch wide face, and a 1/2" single
backbend each side, 16 gage, G-60 galvanized steel with square cut,
butted corners. Jambs and header are of knock-down type for field
assembly through bolted connections. Door frame shall generally
be self-flashing.
5.1.3
Personnel door size shall be either 3070 (single) or 6070 (double). In
addition to size, doors shall be designated as M (solid leaf), G (half
glass; 23" x 29" nominal size), or LV (long vision glass;
6" x 54" nominal size). Doors shall be factory glazed
with
clear glass.
5.1.4
Standard hardware for all doors shall consist of 11/2 pairs of butts
for each leaf (all hinges are in a finish compatible to door finish and
one hinge on each leaf will have a non-removable pin), a lockset in
US26D finish, and an aluminum threshold (3 3/8 inches wide) with vinyl
door sweep. An astragal will be furnished for active leaf of double
doors as will head and foot bolts for inactive leaf.
Optional
hardware that may be specified is:
(a) Handicap (lever) handles, in lieu of knobs, on lockset
(b) Panic exit/entrance hardware (slim-line touch bar type)
(c) Surface mounted door closers
(d) Vinyl weatherstripping kit
5.1.5
Doors
may be specified in either "Standard" or "Premium" quality. Differences
are as follows:
|
Standard
|
Premium
|
·Sizes
|
·3070 &
4070
|
·3070 (single)
|
|
(single)
|
6060(double)
|
·Leaf styles
|
·M, G (except
4070)
|
·M, G, &
LV
|
|
& LV
|
|
·Core: (typical)
|
·Kraft honey-comb
|
·Kraft honey-comb
|
(optional)
|
Urethane foam
|
Not available
|
·Glazing
|
|
|
w/kraft cores
|
·Single pane,
|
·Single pane,
|
|
tempered glass
|
tempered glass
|
|
(clear)
|
(clear)
|
w/foam cores
|
·Double pane,
|
Not available
|
|
tempered glass
|
|
|
(clear)
|
|
·Factory Paint
|
·White, primer coat
|
·Burnished Slate
|
(door & frame)
|
|
finish coat
|
·Surface texture
|
·Smooth/smooth
|
·Leather grain/
|
(door & frame)
|
|
smooth
|
·Lockset:
(typical)
|
·Light duty
|
·Mortise**
|
|
cylindrical
|
|
(optional)
|
·Medium duty
|
·None
|
|
cylindrical* or mortise**
|
|
·Weatherstripping
kit
|
·Optional extra
|
·Included
|
*Medium
duty
cylindrical locksets are designed to conform to ANSI A156.2, Series
4000, Grade 2 and will meet Federal Specifications FF-H-00106B, Series
160. These locksets are UL listed.
**Mortise locksets are designed to conform to ANSI A156.2, Series 1000,
Grade 1 and will meet Federal Specifications FF-H-00106B, Series 86 and
87. These locksets are UL listed.
5.1.6 Sheet metal trim shall be furnished with all doors to flash
around door frame and provide a finished appearance.
5.2
HORIZONTAL SLIDING WINDOWS
5.2.1
Aluminum windows shall be single slide (horizontal) type, with
preglazed clear glass, removable half screens, latching device,, and
weatherstripping. windows are specifically designed for installation in
a structural sub-frame, and will have mounting fins.
5.2.2
Single
windows shall be 3030, 3040 or 6030 nominal size.
5.2.3
Window
shall be glazed with clear glass using vinyl glazing beads and shall be
back-bedded. Screens for windows shall be fiberglass mesh (dark bronze
color) in an aluminum frame (finished to match window finish).
5.2.4
All
structural members shall be extruded aluminum, assembled with screws
and sealed at junctions. Window construction shall conform to AAMA
(American Aluminum Manufacturers Association) Specification A-1,
Class II.
5.2.5
Windows
may be specified in either Standard or Premium quality. Differences are
as follows:
|
Standard
|
Premium
|
·Finish on Aluminum
|
·Mill
|
·Burnished Slate
|
·Glazing
|
·1/8" D.S.B.
|
·7/16" double
|
|
clear glass
|
pane insulating
|
|
|
glass (clear)
|
5.2.6
Structural sub-framing consisting of angle sections shall be furnished
with each window. Cold formed channel sub-framing may be specified
as optional.
5.2.7
Sheet
metal trim shall be furnished with all windows to flash around window
frame and provide a finished appearance.
5.3
FIXED
GLASS WINDOWS
5.3.1
Aluminum, strip windows shall be self-flashing type with mounting fins
and snap-on trim. Frame members shall be extruded aluminum sections
21/2" deep with .062" wall thickness. Unit shall have a Burnished Slate
finish and shall be preglazed.
5.3.2
Strip
window shall be 2 feet wide by 6 feet high, nominal size, and shall be
field mounted in a structural sub-frame consisting of angle sections.
Cold formed channel sub-framing may be specified as optional.
5.3.3
Window
shall have fixed glass. Glazing will be 7/16" double pane, insulating
glass (clear). Aluminum snap-in glazing beads will be used and glass
will be back-bedded.
5.3.4
Window
unit shall be assembled with screws and sealed at junctions.
Construction shall conform to AAMA (American Aluminum Manufacturers
Association) Specification A-1, Class II.
6.
BUILDING
FOUNDATION
6.1
ANCHOR
BOLTS
6.1.1
Anchor
bolts shall be furnished by others (not Delta) and shall be set in
strict accordance with Delta's anchor bolt drawings. Anchor bolts shall
be of length and strength to properly resist the governing reactions
induced by the design loads and shall be of the diameter shown on
Delta's anchor bolt drawings. All anchor bolts shall be unpainted so as
to bond with the concrete in which they are set. Anchor bolts can be
furnished by Delta if specifically called for by the
contract documents.
6.2
FOUNDATIONS The building foundation shall be designed by a qualified
engineer to support the metal building and all other loads required by
the occupant's usage. Delta's anchor bolt drawings shall show column
reactions to be used for designing the building foundation. Delta shall
not be responsible for the design or adequacy of the
foundation provided.
7.
BUILDING ERECTION
7.1.1
The
erection of Delta Buildings systems shall be in accordance with
applicable erection drawings and other erection information furnished
by Delta.
7.1.2
Erection shall be performed by a qualified erector using proper tools
and equipment. It shall be the responsibility of the erector to comply
with all applicable legal and safety requirements. It shall further be
the responsibility of the erector to determine and provide any and all
temporary bracing, bridging, blocking. shoring, and/or securing of
components, etc. as required for stability during the entire
erection process.
7.1.3
Erector
shall not make any field modifications to any structural member except
as authorized and specified by Delta.
8.
WARRANTIES
8.1.1
With
every building manufactured Delta shall furnish a three year limited
warranty against failure caused by faulty or
sub-standard materials.
8.1.2
If
Delta Steel Buildings Company (tm)
erects the building, Delta's limited warranty shall also include a one
(1) year workmanship guarantee against failures caused by
faulty erection.
8.2
WALL
PAINT WARRANTIES
8.2.1
All
Delta color coated wall panels shall be warranted, within limits set by
the warranty, for a period of ten (10) years against chalk, fade,
crack, check, blister or peel. This 10 year warranty is standard; a
twenty (20) year warranty may be specified as an
optional extra.
8.2.2
Delta
color coated wall panels shall be warranted, within limits set by the
warranty, for a period of twenty (20 ) years against chalk, fade,
crack, check, blister or peel. This 10 year warranty is standard; a
twenty (20) year warranty maybe specified as an
optional extra.
8.3
ROOF
PAINT WARRANTY 8.3.1 All Delta color coated (white only) roof panels
shall be warranted, within limits set by the warranty, for a period of
five (5) years against chalk, fade, crack, check, blister or peel. This
5 year warranty is standard.
8.4
ROOF
MATERIAL WARRANTY (GALVALUMETM PANELS) 8.4.1 All
unpainted
GalvalumeTM roof panels shall be
warranted, within
limits set by the warranty, for a period of twenty (20) years against
rupture, perforation and structural failure. This 20 year warranty is
standard only if panels are installed using
approved fasteners.
8.5
ROOF
WEATHERTIGHTNESS WARRANTY (DELTA ROOF SYSTEM)
8.5.1
A
twenty (20) year weathertightness warranty may be purchased as an
optional extra for Delta Roof Systems only. Delta and the Delta Builder
who erects the building will participate in this warranty. If a 20 year
weather-tightness warranty is specified, Delta shall guarantee the
Builder's performance to repair or stop any roof leaks caused by wear
and tear by the elements, subject to provisions set forth in
the warranty.
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|