**SPECIAL SPECIFICATION**

**SECTION #08316**

**LOW PRESSURE BLAST RESISTANT DOORS**

[PART 1 - GENERAL]{.underline} [Page]{.underline}

1.01 Scope of Work 2

1.02 Applicable References 2

1.03 System Description 3

1.04 Submittals 3

1.05 Quality Assurance 5

1.06 Delivery, Storage and Handling 5

[PART 2 - PRODUCTS]{.underline}

2.01 Materials 6

2.02 Fabrication 7

[PART 3 - EXECUTION]{.underline}

3.01 Supervision and Inspection 9

3.02 Installation 9

3.03 Operational Acceptance Tests 10

3.04 Adjust and Clean 10

**SPECIAL SPECIFICATION**

**SECTION #08316**

**LOW PRESSURE BLAST RESISTANT DOORS**

[PART 1 - GENERAL]{.underline}

1.01 [SCOPE OF WORK]{.underline}

A. The work specified herein includes furnishing all materials and
equipment, and performing all labor and services necessary to design,
fabricate, inspect, shop prime, certify and deliver to the site,
supervise the installation and operational acceptance tests of all
units.

B. Units shall include door, door frame, embedments, all hardware, and
controls, attachments and appurtenances to meet the criteria specified.

C. Related work and specified elsewhere includes:

Division 3 - Reinforced Concrete

Division 4 - Concrete Masonry Units

Division 5 - Structural Steel

Division 9 - Painting

Division 16 - Electrical Work

1.02 [APPLICABLE REFERENCES]{.underline}

A. Materials, procedures, and work shall conform with the following
codes, standards and specifications. The effective date of the documents
shall be the most recent edition, addenda, or revision.

AISC The AISC Manual of Steel Construction

AWS American Welding Society Structural Welding Code, D1.1

NEMA National Electrical Manufacturer\'s Association, Industrial

Controls and Systems ICS 1977

NFPA National Fire Protection Association, NEC 70-1978, Static

Electricity 77-1977.

ASTM A36 Structural Steel

ASTM A276 Stainless & Heat Resisting Steel - Bars & Shapes

ASTM A325 High Strength Bolts for Structural Steel Joints including

Suitable Nuts and Plain Hardened Washers

ASTM A331 Hot or Cold Finished Bar, Rounds, Flats, Square or Hex

ASTM A366 Steel, Carbon, Cold-Rolled Sheet, Commercial Quality

ASTM A434 Quenched & Tempered Alloy Steel Bars H.R. or Cold Finished

ASTM A490 Quenched & Tempered Alloy Steel Bolts for Structural Joints

ASTM A569 Steel, Carbon (0.15 Maximum %) Hot-Rolled Sheet and Strip,

Commercial Quality

ASTM A570 Grade C Structural Quality Hot Rolled Carbon Steel

ASTM A588 Grade A High Strength Low Allow Structural Steel

ANSI American National Standard Institute, Inc. standards shall be used

as applicable for the application and selection of hardware and for

shop drawing format, fits, tolerances, and quality.

U. S. Department of the Army Technical Manuals:

TM5-855-1 Fundamentals of Protective Design (Non-Nuclear)

TM5-1300 Structures to Resist the Effects of Accidental Explosions

1.03 [SYSTEM DESCRIPTION]{.underline}

Blast resistant doors shall be designed and fabricated to meet the
loading and other specific requirements as listed on the drawings with
all components furnished and factory assembled by one manufacturer and
shipped to the jobsite as a complete and operable unit, including the
door, frame, hardware and anchors. Full anchorage details shall be
provided to coordinate with reinforced concrete masonry unit placement
and additional reinforcing steel work around the doors. Supervise
installation to insure that requirements are met for proper operation
and that the dynamic loads are transferred through the door frame into
the surrounding reinforced section of wall or slab.

1.04 [SUBMITTALS]{.underline}

A. General: Submit required data for approval prior to performing the
work covered. Submit complete packages of documents for review and
approval. Partial submittals, or submittals of less than the whole of
any system made up of interdependent components will not be considered.

1\. Review and approval shall not relieve the manufacturer of the full
responsibility for the correctness of the documents furnished, as they
may be modified by comments; for conformance with this specification;
and the provision of a complete operating system.

B. Qualifications: Submit for approval data to support the
qualifications of the manufacturer and installer as specified in Section
1.05, Quality Assurance.

C. Design Computations: The design of the blast resistant doors and
frames shall be performed by a Registered Professional Engineer licensed
in the United States with prior experience in the design of similar
blast resistant doors. His or her seal shall be affixed to the submitted
calculations and shop drawings. The door manufacturer shall submit for
approval detailed calculations including stress and deflection analysis
in accordance with the criteria established in Department of the Army
Design Manual TM5-1300 and Picatinny Arsenal Technical Manual 4837. The
calculations shall clearly indicate the door number, dynamic blast
loadings and duration including rebound, specific reference for all
formulas and equations, and source of supporting data. Calculations
shall also be included for all accessories including anchorage and door
hardware.

1\. All calculations shall be in such form as will facilitate a direct
manual

numerical check and shall be performed for each door considering the
design

loads outlined in the blast door schedule.

D. Product Data: Submit manufacturer\'s descriptive literature,
diagrams, performance or characteristic curves, catalog cuts,
specifications and other information substantiating compliance with
contract requirements.

E. Shop Drawings: Submit shop drawings at ample scale to include detail
fabrication and equipment drawings; assembly showing the complete
installation, including methods for supporting the doors and frames; a
listing of all materials and material specifications; surface finishes;
fabricating, assembly and installation tolerance; and a detail sequence
for installation of the frames and doors in conjunction with other
phases of construction.

1\. Structural fabrication drawings shall conform to the requirements of
AISC

and welding shall conform to AWS. Assembly and installation drawings

shall be based on field established conditions to assure coordination
with

architectural, structural, mechanical and electrical systems.

F. Material Certification: Certified mill test reports or test reports
from approved independent laboratories must be furnished to substantiate
that materials meet or exceed requirements. Approved independent
laboratory shall be a nationally recognized laboratory normally engaged
in similar work.

G. Tests and Test Reports: Except as noted, the testing requirements for
materials stated herein or incorporated in referenced documents will be
waived, provided certified copies of reports of tests from approved
laboratories performed on previously manufactured materials are
submitted and approved. Test reports shall be accompanied by notarized
certificates from the manufacturer certifying that the previously tested
material is of the same type, quality and manufacture as that furnished
for this project.

H. Qualification of Welders: Submit the names of the welders to be
employed on the work together with certification that each of these
welders has passed qualification tests using procedures covered in AWS
Standard D1.1 within the previous 12 months.

I. Standards Compliance: Where equipment or materials are specified to
conform to requirements of the standards of organizations such as ANSI
or UL, which use a label or listing as method of indicating compliance,
proof of such conformance shall be submitted for approval.

1.05 [QUALITY ASSURANCE]{.underline}

A. Qualification of Manufacturer: The manufacture and installation of
the blast resistant doors and frames shall be performed by a
manufacturer who, with his own organization, shall have at least two
years of proven successful experience in the design, fabrication and
installation of similar blast resistant doors. The organization shall be
regularly engaged in this type of work and shall have complete
facilities, equipment, and technical personnel for the design,
fabrication, installation and testing of complete door systems. Submit
for approval, information to confirm that the manufacturer\'s
qualifications are in conformance with this specification. A list of
previously successfully completed jobs of a similar nature indicating
the name and address of the Owners shall be included with this
information.

B. Qualification of Fabricator: The fabricator and installer must be
experienced in this type work and submit qualification and data
indicating two years of successful experience performing similar work..

1.06 [DELIVERY, STORAGE AND HANDLING]{.underline}

A. The manufacturer shall prepare all materials and articles for
shipment in such a manner as to facilitate their handling and protection
from damage in transit and storage.

B. After unloading at the jobsite and subassembly of door components,
and prior to erection and hanging, confirm conformance with approved
shop drawings and that no components have been damaged in shipment.

[PART 2 - PRODUCTS]{.underline}

2.01 [MATERIALS]{.underline}

A. Frames: Frames shall be factory built of structural steel, conforming
to ASTM A588 or A36, reinforced to accommodate hardware and resultant
concentrated blast loads, and shall be equipped with appropriate
anchorage devices to assure positive transfer of loadings to the
supporting structure. A588 steel shall be marked for verification of
strength. Frames shall be shipped and installed as a single unit. Frames
shall be factory prepared to receive hinges, fastenings, hardware and
sealing device. If frames are drilled and tapped to receive hardware and
accessories, galvanized metal cover boxes shall be welded to the back
side of frame to protect tapped holes. Protection for all frames shall
be provided during construction.

B. Hardware: Hardware for blast resistant hinged swing doors shall be
specially designed to withstand repeated blast forces. All hardware
shall be corrosion resistant and shall not be dependent upon painting.
Hardware shall be readily replaceable. Panic devices and/or fusible link
closures shall be provided where shown on Blast Door Schedule, and shall
be installed by door manufacturer so as to maintain the operating
integrity of the mechanism.

1\. Bolts and/or latching devices shall be adjustable and self-cleaning
to

provide for full penetration. Number of bolts or devices shall be

determined by the manufacturer in accordance with the blast design

analysis. The latching mechanisms of the blast doors shall be

mechanically operated. Provisions shall be made such that the bolts

and/or latching mechanisms can be removed for repair. Bolts, or

latching devices shall be non-sparking when engaged.

C. Hinges: All hinges shall consist of vibration proof heavy duty
surface mounted hinges machined from high-strength steel. Hinges shall
be vertically and laterally adjustable to permit accurate alignment of
the doors in the frame. Hinge blades shall be reinforced as required.
Hinges shall be equipped with factory lifetime lubricated bearings to
insure ease of operation and weight support in the radial and thrust
bearing planes. Hinges shall be designed for a yearly door operating
frequency of 10,000 and shall be permitted to be opened or closed with a
30-pound force, except required egress doors shall comply with NFPA 101,
paragraph 5-2.1.4.3.

D. Welding Electrodes: The welding electrodes to be used in the
fabrication and installation of the specified units shall be in
accordance with the AWS Structural Welding Code for steel.

E. Seals and Gaskets: Material shall be closed cell neoprene or silicone
or equal. Provide weather seals on all doors exposed to the exterior.
Refer to drawings for specific performance requirements.

F. Limit Switches: Two single-pole, single-throw limit switches (rated
at 3 amps @ 125 volts) shall be provided on each door assembly. One
shall be placed inside the door jamb cover plate and located to detect
when the pins are fully extended and the second shall be mounted to the
head of the door frame on the inside to detect when the door is closed.
The limit switches shall be wired in series such that, when the door is
closed and locked, both switches will close to complete a circuit and
transmit a signal.

G. Door Handles: Lever handles shall be steel at least 6 inches long and
shall be attached to the door by bolts tapped into the door plate.

2.02 [FABRICATION]{.underline}

A. General: The drawings indicate the clear openings and the
construction of the walls, roof and floor slabs. The manufacturer of the
blast resistant doors and frames shall carefully investigate the
building design drawings and finished conditions affecting his work and
shall design the units to meet the job conditions and dynamic analysis
criteria. The blast resistant units shall be complete with gaskets,
fasteners, anchors, latching mechanisms, hardware, mechanical operators,
and other equipment and accessories as indicated on the drawings and as
required for complete installation.

B. Blast Doors and Components: Except as modified herein, fabrication
shall be in accordance with the AISC Specification for the Design,
Fabrication and Erection of Structural Steel for Building. Welding shall
be in accordance with the requirements of AWS Specification D1.1. A
welding sequence to reduce distortion and locked-up stresses to a
minimum shall be used. Exposed welds shall be ground smooth. Exposed
surfaces of work in place shall have a smooth finish. Where tight fits
are required, joints shall be milled to a close fit. Corner joints shall
be coped or mitered, well formed, and in true alignment. Permanent
connections for all assemblies and components, except those requiring
removal for installation and maintenance, shall be welded. All
components subject to wear or replacement shall be fabricated for easy
removal. Parts and assemblies shall be machine finished wherever
necessary to insure proper fit of the parts and the satisfactory
performance of the assembly. The types of edge preparation used for
welds shall be chosen by the manufacturer to be the most suitable for
the joint and position of welding.

1\. Blasts Doors: Door shall be of incombustible construction,
fabricated from structural steel plates conforming to ASTM A588 or A36.
Where indicated on the drawings, door and frame assembly shall bear
fire-rated label from Underwriters Laboratories. Doors shall be of the
flush type. Protection for all blast doors and frames shall be provided
during construction. Door swings shall be as shown on the drawings.

2\. Doors and frames shall be welded flush construction. All exposed
welds

shall be ground flush and dressed smooth. Welding of reinforcements

shall not be evident on the exposed faces.

3\. Units shall be rigid, neat in appearance and free of visible warp,
buckle

and surface defects. Members shall be straight and true with corners

square and well-formed.

4\. All unit assemblies and components, except seals, shall be of non-
combustible construction, fabricated from the specified structural steel

complying with ASTM materials and AISC Manual of Steel Construction.

5\. Operating mechanism shall consist of a gear segment operated by a

handwheel or lever handle from either or both sides of the door as

indicated. The operating mechanism shall operate all locking pins or

dogs simultaneously. When the locking pins are engaged, the gap

between the door and frame shall not exceed 1/8\" for hinged doors.

6\. Manufacture doors to safely operate between local temperature

extremes assuming no heat in the building.

C. Specific Requirements:

1\. Elastic rebound loads shall be not less than 100 percent.

2\. Local plastic deformation will be allowed on doors subjected to

fragments, but perforation must not occur.

3\. The doors must withstand the design loads within the deformation

allowed on the design drawings. The doors shall be designed to survive
one dynamic pressure loading. After the design accident, the doors must
be operable using less than 30 foot-pound force on the operator for less
than 15 seconds, except as modified by paragraph 2.01.C.

4\. No raised or recessed threshold will be permitted. Where locking
devices or dogs are required at the door bottom, they must be recessed
flush with the floor slab.

D. Shop Assembly: The manufacturer shall factory pre-assemble every door
and frame complete with operating hardware to prove proper fit and
operation, and either ship and install the door and frame as a unit or
take such necessary precaution as will insure a proper installed fit.

E. Workmanship: The finished items shall be rigid, neat in appearance,
and free from defects, warp or buckle. Molded members shall be sharp in
detail, straight and true. Corner joints shall be well formed, and in
true alignment. Exposed welded joints shall be dressed smooth.

F. Shop Painting: After fabrication, doors and frames shall be
thoroughly cleaned and shop primed in accordance with Steel Structures
Painting Council Specification SP7. Surfaces to be welded shall not be
coated within 3\" of the weld, prior to welding. All machined surfaces
in contact with other surfaces and bearing surfaces shall not be
painted. These surfaces shall be corrosion protected by the application
of a corrosion preventive compound. Surfaces to be embedded in concrete
shall not be painted. Finish painting shall be in accordance with
Section 09900.

[PART 3 - EXECUTION]{.underline}

3.01 [SUPERVISION AND INSPECTION]{.underline}

The manufacturer of the blast resistant doors and frames shall either
install the doors and frames themselves or provide a Field Inspection
Engineer to perform the supervision and inspection service specified
hereinafter.

3.02 [INSTALLATION]{.underline}

A. Blast doors and frames shall be installed in accordance with approved
shop drawings and manufacturer\'s printed installation procedures and
under the supervision of the manufacturer\'s qualified Field Inspection
Engineer. The installation of the units shall be coordinated with the
work performed by other trades to insure the timely installation of
anchorage components, frames, recesses, etc.

B. All doors and frames must be grounded to the reinforcing steel.

C. Check installation of frames, embedded items, etc., before concrete
masonry units are placed (after forms are in place) to insure that
dimensional tolerances are acceptable and that grounding to
reinforcement has been accomplished.

3.03 [OPERATIONAL ACCEPTANCE TESTS]{.underline}

Perform or supervise operational acceptance tests of all doors and
components in the presence of the Sandia National Laboratories
designated representative to verify conformance with the specifications.

3.04 [ADJUST AND CLEAN]{.underline}

A. Final Adjustments: Check and readjust operating finish hardware items
prior to final inspection. Leave work in complete and proper operating
condition. Remove and replace defective work, including doors or frames
which are warped, bowed, or otherwise damaged.

B. Prime Coat Touch-up: Immediately after erection, sand smooth any
rusted or damaged areas of prime coat and apply touch-up of compatible
air-drying primer.

\-\-\-\-\-\-\-\-\-\-\-- END OF SECTION \-\-\-\-\-\-\-\-\-\-\--