American National Standard
Recommended Erection Instructions for
Revision of ANSI/SDI A250.11-2001
1.1 Recommended methods for the installation of steel frames for swinging doors in a variety of wall conditions, commonly used in commercial buildings, are covered within this standard. The installation of transom/sidelight (or panel) type frames and single or multiple borrowed lights are not covered in this standard.
1.1.1 It is not the intention of this document to obstruct the development of alternative installation methods, nor is it intended to restrict frame installation solely to the wall types noted herein.
1.1.2 Although this document is commonly referenced for severe windstorm installations, critical performance requirements (such as type, quantity, and location of anchors) shall be as indicated in the manufacturer’s published Approvals or Listings.
1.2 Reference documents
- SDI 127E-2006, Prime Painted Materials Alert
- SDI 127F-2010, Butted Frames Rough Opening Sizes
- SDI 127J-2010, Back-Coating of Frames
- SDI 117-2009 Manufacturing Tolerances for Standard Steel Doors and Frames
- NFPA 80-2010, Standard for Fire Doors and Other Opening Protectives (National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269; www.nfpa.org)
- UL10C-2009 Standard for Safety Positive Pressure Fire Tests of Door Assemblies
- ANSI/SDI A250.8-2003(R2008) Recommended Specifications for Standard Doors and Frames
- HMMA 840-07, Installation and Storage of Hollow Metal Doors and Frames
- HMMA 841-07, Tolerances and Clearances for Commercial Hollow Metal Doors and Frames
1.2.1 Further information on wall construction, anchoring, details, manufacturing tolerances or installation may be found in the following:
- SDI 110-2009, Standard Steel Doors and Frames for Modular Masonry Construction
- SDI 111-2009, Recommended Standard Details for Steel Doors, Frames, Accessories and Related Components
- SDI 122-2007, Installation and Troubleshooting Guide for Standard Steel Doors and Frames
- SDI 127D-2006, Electric Strikes in Stud Walls
1.3.1 Standard dimensions used in this document are in inch-pound units. Metric values, where applicable, are included in parenthesis for reference only. These are “soft conversion” approximates.
2 Storage and Preliminary Assembly (see SDI 127E, and ANSI/SDI A250.8)
2.1 All frames, including knocked-down, shall be stored under cover.
2.1.1 Knocked-down frames shall be placed flat on at least 4˝ (102 mm) wood sills to prevent the frames from resting on the ground.
2.1.2 Assembled frames shall be stored vertically. The units shall be placed on at least 4˝ (102 mm) high wood sills or in a manner that will prevent rust or damage.
2.1.3 The use of non-vented plastic or canvas shelters that can create a humidity chamber shall be avoided.
2.1.4 Refer to project specifications for required cleanup and touchup work.
2.2 Back-Coating (see SDI 127J for further information)
2.2.1 When temperature conditions necessitate the use of anti-freezing agents in plaster or mortar, the inside of the frame shall be coated at the jobsite with a corrosion resistant coating by the contractor responsible for installation.
2.3 Grouting of frames (see ANSI/SDI A250.8 for further information)
2.3.1 Where grouting is required in masonry installations, frames shall be braced or fastened in such a way that will prevent the pressure of the grout from deforming the frame members.
2.3.2 Grout shall be mixed to provide a 4˝ (102 mm) maximum slump consistency, and be hand troweled into place. Grout mixed to a thinner “pumpable” consistency shall not be used.
2.3.3 Standard mortar protection in frames is not intended for thin consistency grout. Steel frames, including fire rated frames, do not require grouting. Grouting is not recommended for frames installed in drywall.
2.4 Assembly of frame/anchor provisions
2.4.1 Follow manufacturers’ recommended procedure for assembly of frame and quantity and spacing of anchors. If not indicated, install anchors at hinge levels and directly opposite at strike jamb.
2.5.1 Prior to installation, jobsite personnel shall ensure correct swing, size and labeling.
2.6 Installation tolerances
2.6.1 While this document is mainly concerned with tolerances relating to the manufacturing process, openings will not function properly if the frame is not installed within recognized tolerances.
Figure 1 shows examples of the accuracy to be maintained while setting frames.
3 Plumbing and bracing frames
3.1 Wood Spreaders (see Figure 2)
The Contractor(s) responsible for installation shall have available a sufficient supply of wood spreaders for bracing frames. Spreader bars for shipping purposes shall not be used as installation spreaders.
3.1.1 Wood spreaders shall be square and fabricated from lumber no less than 1˝ (25.4 mm) thick. Correct length is the door opening width between the jambs at the header (i.e., Single Door 3´-0˝ = 36˝= 915 mm). Length tolerance is +1/16˝, -0˝ (+1.6 mm, –0). Cut clearance notches for frame stops. Spreader shall be nearly as wide as frame jamb depth for proper installation.
3.2 Equipment for plumbing the frame (see Figure 3)
3.2.1 The contractor should be equipped with a carpenter level, square and wood spreaders.
3.2.2 Where welded frames are provided with spreader bars, they shall be removed with a suitable saw or chisel and filed flush before setting frames.
3.3 Bracing the frame (see Figure 4)
3.3.1 Frame bracing shall be as shown or shore to a structure above.
3.3.2 Bracing shall be perpendicular to the intended wall.
3.4 Positioning the frame
3.4.1 Set the frame in the desired location and level the header. Square jambs to header. Shim under jambs if necessary. With frame properly aligned, insert wood spreaders at bottom and mid-height and fasten jambs to floor through floor anchors.
3.4.2 Plumb and square jambs. Install vertical brace to support header for openings over 4´-0˝ (1219 mm) wide.
4.1 Install rubber silencers (see Figure 5)
4.1.1 Cut the point from a #6d box or finishing nail. Insert nail in hole to elongate rubber silencers.
Moisten the end and insert rubber silencers in predrilled holes on frame stop, remove nail. The thickness of the silencer shall permit latching of door with 1/16˝ to 3/32˝ (1.6 to 2.4 mm) clearance between face of door and stop of frame.
4.1.2 Install rubber silencers before frame erection to avoid grout filling rubber silencer holes. In some cases rubber silencers are factory installed.
4.2 Extended base anchor (see Figure 6)
4.2.1 Extended base anchors are supplied upon request only. (If required for tool attachment.)
5 New masonry construction (see Figure 7)
5.1 Assemble frame per manufacturer’s instructions.
5.2 Erect, brace, square and plumb frame.
5.2.1 Fasten frame to floor through base anchors.
5.3 Set second spreader at the mid-height of the door opening to maintain the door opening size.
5.4 Install anchors (see Figure 8). Grout frame in the area of the anchors as block courses are laid up.
5.4.1 Frames may also be supplied with anchors welded in place.
5.5 Continually check plumb and square as wall progresses.
6 Existing masonry construction
(see Figure 9, Figure 10, and SDI 127F)
6.1 Rough openings for existing wall, structural steel framing, or retrofit installations utilizing a butted to wall application shall be no less than 3/16˝ (4.8 mm) larger the frame on all three sides.
6.1.1 The installer is responsible for any shimming or aligning required. Gaps are normally sealed as part of the installation or caulking/painting process.
6.1.2 Refer to Architectural specifications for the appropriate sealant material to be used at fire or smoke control doors.
6.2 Assemble frame per manufacturer’s instructions.
6.3 Install snap-in anchors (see Figure 11) and tap with a hammer to align with pierced holes in jambs.
6.3.1 Frames may also be supplied with anchors welded in place.
6.4 Slide frame into wall opening; install wood spreaders.
6.5 Where possible, one jamb should be butted tightly to the wall.
6.6 Use tapered shims between anchors and wall and spreaders to maintain squareness and alignment of frame, and to maintain door opening sizes.
6.6.1 Drill appropriate size hole (per fastener manufacturer’s instructions) for one-piece anchor bolts. Leave holes “rough” for added grip.
6.6.2 Backer rod or caulking shall be used where gaps occur between frame and wall.
6.7 Insert anchor bolts and tighten securely, checking for frame alignment periodically.
6.8 Install plugs to cover bolt heads (if so equipped).
7 Steel stud wall construction, studs erected with frame (see Figure 12)
7.1 Assemble frame per manufacturer’s instructions.
7.2 Install snap-in anchors. Position anchors in frame through the throat and tap in with a hammer.
7.2.1 Frames may also be supplied with anchors welded in place.
7.3 Erect, brace, square and plumb frame as shown.
7.4 Install wood spreaders.
7.5 Attach jambs to floor through floor anchor or floor extension.
7.6 Install jamb studs to floor, header channels, and ceiling runners butted tightly against frame anchors and properly positioned in frame throat for wallboard.
7.6.1 Nesting or overlapping stud joints or other wall construction practices that will increase the overall wall thickness beyond the intended finished thickness are to be avoided.
7.7 Attach jamb studs to anchors with screws or weld.
7.7.1 If using screws, drill from the back side of the stud, through both the stud and anchor, then attach with (2) screws per anchor location (see Figure 13). Screws shall be #6 x 3⁄8˝ minimum steel sheet metal or self tapping type.
7.7.2 When attaching header stud to jamb studs, be sure the stud is above frame header. This will assure ample room for attaching plaster lath or drywall and will not interfere with installation of hardware attached to frame header.
7.7.3 At wrap-around installations in fire rated walls, drywall shall extend at least 1⁄2˝ (12.7 mm) into frame throat. See Section 12 for frame installations in butted or existing stud walls.
8 Double egress frames in steel stud wall construction
8.1 Generally, the installation of double egress frames in steel stud walls follows the same procedure as Section 7.
8.1.1 If frames are supplied knocked down, assemble per manufacturer’s instructions.
8.1.2 Install anchors (if not supplied welded to frame) per manufacturer’s instructions.
8.2 Erect, brace, square and plumb frame as shown (see Figure 14).
8.2.1 Stand frame up in desired location. Anchor one jamb to floor and set wood spreader on floor from anchored jamb to loose jamb.
8.2.2 Install a vertical wood brace at center of frame.
8.2.3 Position and anchor second jamb to floor. Plumb, level and square frame, then install wood spreaders at mid-height.
8.3 Anchor jambs (see Figure 15)
8.3.1 Install jamb studs to floor, header channels, and ceiling runners butted tightly against frame anchors and properly positioned in frame throat for wallboard.
8.3.2 Nesting or overlapping stud joints or other wall construction practices that will increase the overall wall thickness beyond the intended finished thickness are to be avoided.
8.4 Attach jamb studs to anchors with screws or weld.
8.4.1 If using screws, drill from the back side of the stud, through both the stud and anchor, then attach with (2) screws per anchor location (see figure 15). Screws shall be #6 x 3⁄8˝ minimum steel sheet metal or self tapping type.
8.5 Anchor header (see Figure 16)
Header anchor requirements will vary. The manufacturer’s installation requirements should be followed.
8.6 At wrap-around installations in fire rated walls, drywall shall extend at least 1⁄2˝ (12.7 mm) into frame throat. See Section 12 for frame installations in butted or existing stud walls.9 Wood stud construction (studs erected with frame)
9 Existing masonry construction
9.1 Assemble frame per manufacturer’s instructions.
9.2 Install snap-in anchors. Position anchors in frame through the throat and tap in with a hammer.
9.2.1 Frames may also be supplied with anchors welded in place.
9.3 Square, brace and plumb frame as shown (see Figure 17).
9.4 Install wood spreaders (see Figure 18).
9.5 Attach jambs to floor through floor anchor or floor extension.
9.6 Install jamb studs (jack stud and king stud) butted tightly against anchors and properly positioned in frame throat for wallboard (see Figure 18).
9.6.1 Attach header stud(s) or header assembly between jamb studs making sure they are above the frame head. This will assure ample room for attaching plaster lath or drywall and will not interfere with installation of hardware attached to frame head (see Figure 18).
9.7 Bend anchor straps around stud leaving sufficient clearance between frame return and stud for inserting finished wall material (see Figure 19 and Figure 20).
9.7.1 If there is insufficient room for wall finish, notch jamb studs no more than 1/16˝ (1.6 mm) deep for anchor straps.
9.8 Square and nail top anchor to stud on ONE JAMB ONLY. Check plumb and square and continue to nail balance of anchors to stud. Repeat for opposite jamb. For steel studs install screws from back of stud into Z anchor (see Figure 21).
9.8.1 At wrap-around installations in fire rated walls, drywall shall extend at least 1⁄2˝ (12.7 mm) into frame throat. See Section 12 for frame installations in butted or existing stud walls.
10 Wood/steel stud construction (studs erected before frame)
10.1 Build rough opening (see Figure 22) according to dimensions and clearances in manufacturer’s installation instructions.
10.1.1 Assure that rough openings are no less than those required in SDI 127F.
10.1.2 It is recommended that double studs be used at jambs and headers.
10.2 Assemble frame per manufacturer’s instructions.
10.3 Install snap-in anchors. Position anchors in frame through the throat and tap in with a hammer.
10.3.1 Frames may also be supplied with anchors welded in place.
10.3.2 If base anchors cannot be used add one anchor per jamb at bottom.
10.3.3 Install fire rated frames with the anchor quantity and spacing as per the individual manufacturer’s listings and instructions.
10.4 Slide frame into wall opening.
10.4.1 Install wood spreaders at bottom and mid-height. Square and level frame. Shim jambs if necessary (see Figure 23).
10.5 Bend anchor straps around stud leaving sufficient clearance between frame return and stud for inserting finished wall material (see Figure 24 and Figure 25).
10.6 Square and nail top anchor to stud on ONE JAMB ONLY. Check plumb and square and continue to nail balance of anchors to stud. Repeat for opposite jamb. For steel studs install screws from back of stud into Z anchor (see Figure 26
10.6.1 NOTE: At wrap-around installations in fire rated walls, drywall shall extend at least 1⁄2˝ (12.7 mm) into frame throat. See Section 12 for frame installations in butted or existing stud walls.
11 Slip-on drywall
11.1 Prepare rough opening (see Figure 27) per frame manufacturer’s recommendations.
11.1.1 Nesting or overlapping stud joints or other wall construction practices that will increase the overall wall thickness beyond the intended finished thickness are to be avoided.
11.2 Install base anchors if not factory welded to jambs or if frame faces are not prepared for base anchor screws.
11.3 Install jambs and header onto wall per manufacturer’s instructions, taking care to align corner gussets (if so equipped). See Figure 28.
11.4 Level and square frame (see Figure 29)
11.4.1 Install wood spreaders.
11.5 Turn adjusting screws hand tight (DO NOT USE SCREW GUN) until compression anchor contacts jamb studs. See Figure 30.
11.6 Re-check level and square. Adjust using anchor screws as needed.
11.7 Fasten base anchors to wall stud (see Figure 31) or fasten to wall studs through prepared holes in face of jambs at bottom.
12 Butted or Existing Steel or Wood Stud Wall Construction
12.1 Historically, frames installed in fire rated stud walls required frames to wrap around the wall and drywall must extend at least 1⁄2˝ (12.7 mm) into frame throat. Fire testing has confirmed that fire door frames will perform satisfactorily to the acceptance criteria of UL 10C under positive pressure when butted to new or existing stud and drywall construction (see Figure 32 and Figure 33).
12.1.1 This installation has been incorporated into NFPA 80 as Figure A.18.104.22.168(a) and A.22.214.171.124(b).
12.1.2 Applicable Building Codes and individual manufacturers’ product listings shall be consulted when these butted frames are used in fire rated walls.
12.1.3 This installation process DOES NOT apply to Slip-on Drywall frames in Section 11.
12.1.4 Listed fill, void or cavity material shall be used at the junction of frame faces and returns with the drywall surface. The bead of fill, void or cavity material shall be no wider than 1/2˝ (12.7 mm).
12.2 Assemble knock down frames per manufacturer’s instructions.
12.3 Anchors are typically welded to frames and will either be a sleeve aligned with a countersunk hole or a plate between returns with an access hole and plug.
12.4 Assure that rough opening or opening between walls is plumb, square, and properly sized to fit overall frame dimensions and expansion capability of intumescent caulk or sealant. (See SDI 127F for further information).
12.5 Using a “stud finder” or similar tool, assure that studs will align with frame mounting screws.
12.6 Slide frame into wall opening; install wood spreaders at the floor and mid-height of opening.
12.7 Use tapered shims between anchors and wall and spreaders to maintain squareness and alignment of frame and to maintain door opening. Make sure that shims will not interrupt the sealant.
12.8 Insert 1⁄4˝ (6.4 mm) sheet metal screws of suitable length to engage studs through countersink or access hole in frame (see Figure 32 and Figure 33) and tighten securely. Check for frame alignment periodically. (Frame profiles shown are for general details only. Anchors and profiles may vary).
12.9 Insert plugs to cover access holes if so equipped.
12.10 Install Listed intumescent caulk or sealant around perimeter of frame, making sure to cover any gaps caused by irregularities in walls.
Manufacturing Tolerances for Standard Steel Doors and Frames
It is the intent of this publication to inform users
of standard steel doors and frames with
definitive information regarding manufacturing
tolerances. It is also intended to inform the
installation contractor(s) of the tolerances to
be considered to assure proper operation of
the complete opening. It is intended for in-plant
inspections. It may be used for on-site inspections
where there is no evidence of damage to
material or improper installation.
The information contained herein pertains to
doors and frames manufactured in accordance
with ANSI A250.8, Recommended Specifications
for Standard Steel Doors and Frames. It
is not intended to have reference to special or
unusual door and frame conditions.
A2 Reference Documents:
- ANSI/SDI A250.8-2003 (R2008) SDI 100 Recommended
Specifications for Standard Steel
Doors & Frames
- ANSI/SDI A250.6-2003 (R2009) Recommended
Practice for Hardware Reinforcings on Standard
Steel Doors and Frames
- ANSI/SDI A250.7-1997 (R2002) Nomenclature
for Standard Steel Doors & Steel Frames
- ANSI/SDI A250.3-2007 Test Procedure & Acceptance
Criteria for Factory Applied Finish
Coatings for Steel Doors & Frames
- ANSI/SDI A250.10-1998 (R2004) Test Procedure
& Acceptance Criteria for Prime Painted
Steel Surfaces for Steel Doors & Frames
- ANSI/BHMA A156.115-2006 Hardware Preparation
in Steel Doors and Steel Frames
- ANSI/BHMA A156.115-W-2006 Hardware
Preparation in Wood Doors with Wood or Steel
- ASTM A568-09 Standard Specification for Steel,
Sheet, Carbon, Structural, and High-Strength,
Low-Alloy, Hot-Rolled and Cold-Rolled, General
- ASTM A653-10 Standard Specification for Steel
Sheet, Zinc-Coated (Galvanized)
Alloy-Coated (Galvannealed) by the Hot-Dip
- ASTM A924-10 Standard Specification for
General Requirements for Steel Sheet, Metallic-
Coated by the Hot-Dip Process
- NFPA 80-2010 Standard for Fire Doors and
Other Opening Protectives, 2007 Edition (National
Fire Protection Association, 1 Batterymarch
Park, Quincy, MA 02269; www.nfpa.org)
- SDI 122-07 Installation and Troubleshooting
Guide for Standard Steel Doors and Frames
A3 Materials and Finishes
A3.1 Steel Thickness:
Manufacturers no longer order sheet and coil
to a specific gage, but rather to a minimum
decimal thickness. This thickness is the lowest
of the range for a specific gage. The steel supplier
is therefore permitted to exceed, but not
be less than the specified decimal thickness.
These minimum values meet the stringent requirements
of both Underwriters Laboratories
Inc. and ITS/Warnock Hersey. Examples of
minimum allowable steel thickness:
A3.2 Steel Coatings
Thickness of metallic coatings (generally zinc)
are defined by ASTM A924, Standard Specification
for General Requirements for Steel Sheet,
Metallic-Coated by the Hot-Dip Process and
A653, Standard Specification for Steel Sheet,
or Zinc-Iron Alloy-
Coated (Galvannealed) by the Hot-Dip Process.
The two most commonly used are designations
A40 and A60. Minimum requirements for these
- A40= 0.40 oz/ft2 total both sides.
- A60= 0.60 oz/ft2 total both sides.
For reference, 1 oz/ft2 = 1.7 mils thickness.
A3.3 Factory Applied Coatings: Since factory applied coatings (primer, finish
paint, etc.) are subject to performance standards
rather than thickness, the dry film thickness
is irrelevant. Such coatings must comply
with performance criteria of:
ANSI/SDI A250.3 – Test Procedure and Acceptance
Criteria for Factory Applied Finished
Painted Steel Surfaces for Steel Doors and
ANSI/SDI A250.10 – Test Procedure and Acceptance
Criteria for Prime Painted Steel Surfaces
for Steel Doors and Frames.
A4 Frame Tolerances
A4.1 Frame Cross Section Profile
Permissible tolerances in frame profile surfaces
are as shown in Figure A.
A4.2 Frame Opening & Vertical Locations
A4.3 Bow or Twist of Jambs or Header
Realizing that frames are somewhat “pliable”,
and require bracing and alignment during installation,
allowable deformation (bow, twist, etc.) of
jambs or header of frame prior to installation
shall not result in a reduction of opening sizes
more than 1/16˝ beyond those shown in Figure
B when measured at any point.
A4.4 Horizontal Alignment of Door Within
Hinge and strike backsets shall allow the horizontal
centerline of the door to be in line with
the horizontal centerline of the frame rabbet ±
1/32˝ prior to installation. Figure C is an example
based on a 1 3/4˝ door in a 1 15/16˝ rabbet.
4.5 Frames With Lights or Panels
Opening sizes (width or height) for side or
transom lights or panels and for borrowed light
frames shall be subject to a tolerance of ± 1/16˝
for each individual light or panel. These tolerances
shall be non-accumulative so that the
overall frame opening sizes are not increased
by more than 1/8˝ (see Figure D).
A5 Door Tolerances
A5.1 Door Size, Thickness, and Vertical
Locations (see Figure E)
A5.2 Door Squareness
When measured diagonally (see Figure F) from
corner to corner along the same face, the measurements
shall be within 1/16˝ of each other.
A5.3 Door Perimeter Flatness
When a suitable straightedge is laid against the
door face at or within 1/4˝ of the top, bottom,
hinge edge, and lock edge on both faces any
deviation between the face and the straightedge
shall not allow a 0.0625˝ rod or block to pass
(see Figure G). Note: The straightedge shall be
allowed to “rest” naturally on the door surface,
not pulled down at one end to meet the door.
A5.4 Door Face Bow or Crown
# When a suitable straightedge is laid diagonally
against the door face at least 1/2˝ from corners
any deviation between the face and the straightedge
shall not allow a 0.125˝ rod or block to
pass (see Figure H). Note: The straightedge shall be allowed to “rest” naturally on the door
surface, not pulled down at one end to meet
A5.5 Door Twist
The door is laid onto a suitable, flat fixture or
surface that is free of any warp, bow, or twist.
Support blocks of identical heights shall be
inserted between the fixture and the door face
at all four corners of the door. Any deviation
between the face and the support blocks shall
not allow a 0.0625˝ rod or block to pass (see
Figure I). Note: The door shall be allowed to
“rest” naturally on the support blocks, not pulled
down at any corner to meet the blocks.
A5.6 Doors With Lights or Panels
Opening sizes (width or height) for lights or
panels cut into doors shall be subject to a tolerance
of ± 1/16˝ for each individual light or panel.
A6 Hardware Preparations
A6.1 Vertical Locations
Tolerances for vertical locations are as noted
in Paragraphs A4.2 and A5.1.
A6.2 Horizontal Alignment
Tolerances for horizontal alignment of door and
rabbet are as noted in Paragraphs 4.4.
A6.3 Mortise Depth
The depth of hardware items mortised into
edges of doors (such as hinges, strikes, lock
fronts, flushbolts) shall be as defined on manufacturer’s
templates and/or ANSI A156.115
documents subject to an additional tolerance
of ± 1/64˝
A6.3.1 Cutout Depth at Frame or Door
In order to allow for field adjustment, usually
accomplished by shimming, hardware cutouts
(such as hinges) that extend from door edges
around to faces or from frame rabbet around to
faces are allowed to exceed mortise depth by
1/16˝. See Paragraph A7 for examples of common
hinge shimming procedures.
A6.3.2 Depth For Recessed or Concealed
The depth for hardware items recessed into
top or bottom of doors or edges of doors (such
as pocket pivots, floor closers, top pivots,
concealed closers or holders, etc) shall be as
defined on manufacturer’s templates subject to
an additional tolerance of +1/16˝, –0˝. Notches
in door faces shall have similar tolerances.
A7 Frame Installation And Door Adjustments
A7.1 Adjusting Pivot Point by Shimming
Providing extra depth along door or frame
faces allows for hinge knuckles to be offset,
thus changing the pivot point of the opening.
Shims are usually thin strips of 1/4˝ wide material
approximately equal to the hinge height.
A7.1.1 Figure J shows how to relocate the pivot point toward the jamb.
7.1.2 Figure K shows how to relocate the pivot
point away from the jamb.
A7.2 Frame Installation Tolerances
While this document is mainly concerned
with tolerances relating to the manufacturing
process, openings will not function properly
if the frame is not installed within recognized
Figures L, M, N, and O show examples of the
accuracy to be maintained while setting frames.
Further information regarding corrective actions
for of door & frame openings may be found in SDI-122.
The installation instructions contained in ANSI A250.11 are intended to apply to most typical frame
installations. There are, however, certain types of frames for which additional wood spreaders are
recommended during the frame installation to ultimately assure the proper door operation.
Three-sided frames with face dimensions of 1-1/2˝ or less of any opening size, frames for doors
that weigh over 9 lbs. per square foot and/or frames of heights greater than 8'-0˝ are more prone
to variations in installed tolerances. Under most conditions, frames such as these require more
support during the installation process.
For installations such as these, the SDI recommends the use of wood spreaders at the bottom
of frames AND at 36˝ intervals between the top and bottom as indicated in the illustration below.
American National Standard
Approval of an American National Standard requires verification by ANSl
that the requirements for due process, consensus, and other criteria for
approval have been met by the standards developer.
Consensus is established when, in the judgement of the ANSl Board of
Standards Review, substantial agreement has been reached by directly
and materially affected interests. Substantial agreement means much more
than a simple majority, but not necessarily unanimity. Consensus requires
that all views and objections be considered, and that a concerted effort
be made toward their resolution.
The use of American National Standards is completely voluntary; their existence
does not in any respect preclude anyone, whether they have approved
the standards or not, from manufacturing, marketing, purchasing, or using
products, processes, or procedures not conforming to the standards.
The American National Standards Institute does not develop standards and
will in no circumstances give any interpretation of any American National
Standard. Moreover, no person shall have the right or authority to issue
an interpretation of an American National Standard in the name of the
American National Standards Institute. Requests for interpretations should
be addressed to the secretariat or sponsor whose name appears on the
title page of this standard.
CAUTION NOTICE: This American National Standard may be revised or
withdrawn at any time. The procedures of the American National Standards
Institute require that action be taken periodically to reaffirm, revise,
or withdraw this standard. Purchasers of American National Standards
may receive current information on all standards by calling or writing the
American National Standards Institute.
(This Foreword is not part of American National Standard A250.11-2001)
The material contained in this document has been developed under the auspices of the Technical Committee of the Steel Door Institute.
The original standard was issued on July 28, 1980 and was revised in 1990 and 1998, and the 1998 edition was reaffirmed in 2004. The current edition is a revision of the 1998 document with the contents being updated to reflect changes and advances that have take place in the steel door and frame industry.
Suggestions for improvement gained in the use of this standard are welcome and should be sent to the Steel Door Institute, 30200 Detroit Road, Cleveland, OH 44145-1967.
The organizations that have approved this standard are as follows:
American Institute of Architects
Builders Hardware Manufacturers Association
Canadian Steel Door Manufacturers Association
Cedar Valley Associates
Door and Hardware Institute
Door Control Services
HMMA/Division of NAAMM
Intertek Testing Services
Steel Door Institute
Underwriters Laboratories Inc.
Vetrotech / Saint Gobain
Wind Science & Engineering Research Center
The Accredited Standards Committee A250 TC-1 developed this standard and had the following personnel at the time of approval:
James Urban, Chairman
J. Jeffery Wherry, Secretary
||Name of Representative
|American Institute of Architects
|Builders Hardware Manufacturers Association
|Canadian Steel Door Manufacturers Association
|Cedar Valley Associates
|Ceco Door Products
|Door and Hardware Institute
|Door Control Services
|HMMA/Division of NAAMM
|Intertek Testing Services
|Mesker Door, Inc.
|Pioneer Industries, Inc.
|Security Metal Products
|Steel Door Institute
||J. J. Wherry
|Underwriters Laboratories Inc.
|Vetrotech / Saint Gobain
|Wind Science & Engineering Research Center