SECTION 05 5200

METAL RAILINGS

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LANL MASTER SPECIFICATION

This template must be edited for each project.  In doing so, specifier
must add job-specific requirements.  Brackets are used in the text to
indicate designer choices or locations where text must be supplied by
the designer.  Once the choice is made or text supplied, remove the
brackets.  The specifications must also be edited to delete
specification requirements for processes, items, or designs that are not
included in the project \-- and specifier's notes such as these.  To
seek a variance from requirements in the specifications that are
applicable, contact the Engineering Standards Manual Structural
Specifications
[POC](http://www.lanl.gov/orgs/eng/engstandards/POCs.shtml#struc).
Please contact POC with suggestions for improvement as well.\
\
When assembling a specification package, include applicable
specifications from all Divisions, especially Division 1, General
requirements.\
\
Specification developed for ML-4 projects.  For ML-1, 2, and 3
applications, additional requirements and independent reviews should be
added if increased confidence in procurement or execution is desired;
see ESM Ch 1 Section Z10 Specifications and Quality sections.\
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PART 1 GENERAL

1.1 SECTION INCLUDES

A. Steel pipe handrails, balusters and fittings.

1.2 DESIGN REQUIREMENTS

A. Design, fabricate and install railing assembly, wall rails and
attachments to resist a lateral force of 200 pounds applied in any
direction, at any point on the railing without causing damage or
permanent set.

B. Comply with the IBC and NFPA 101, Life Safety Code.

1.3 SUBMITTALS

A. Submit the following in accordance with Section 01 3300, Submittal
Procedures:

1\. Catalog data indicating prefabricated components such as mounting
brackets, trim pieces, etc.

> 2\. Shop drawings indicating profiles, sizes, connection attachments,
> anchorage, type and size of fasteners, and accessories.

PART 2 PRODUCTS

2.1 STEEL RAILING SYSTEM MATERIALS

A. Use pipe conforming to ASTM A500, Grade B, Schedule 40.

B. Make rails and posts of 1 1/2 inch outside diameter steel pipe with
welded joints.

C. Use cast steel fittings, elbows, T shapes, wall brackets,
escutcheons, etc.

D. Provide mountings for \[casting in concrete, embedding in masonry or
mounting to drywall partitions\], as shown on Drawings.

E. Use flush, countersunk screws or bolts, consistent with design of
railing system.

F. Use concealed splice connectors.

G. Apply SSPC 15, Type 1, red oxide shop primer.

2.2 FABRICATION

A. Fit and shop assemble components in largest practical sizes for
delivery to site.

B. Fabricate components with joints tightly fitted and secured. Provide
spigots and sleeves to accommodate site assembly and installation.

C. Provide anchors and fittings required for fastening assembly to
structure. Fabricate anchors and related components of same material,
with same finish, as post and railing fabrication.

D. Continuously seal exterior components by continuous welds. Drill
condensate drainage holes at bottom of members in locations that will
not allow water intrusion.

E. Join interior components with continuous welds; grind exposed joints
flush and smooth with adjacent finish surface. Make exposed joints butt
tight, flush, and hairline. Ease exposed edges to small uniform radius.

F. Accurately form components to fit each other and to building
structure.

PART 3 EXECUTION

3.1 INSPECTION

A. Verify that field conditions are acceptable and are ready to receive
this Work.

3.2 PREPARATION

A. Clean and strip primed steel items to bare metal where site welding
is required.

B. Supply items required to be \[cast in concrete, embedded in masonry
or built into partitions\] with setting templates, to appropriate
trades.

3.3 INSTALLATION

A. Install components plumb and level, accurately fitted, and free from
distortion or defects.

B. Field weld anchors as indicated on shop drawings. Grind welds smooth,
and touch up with primer.

C. Assemble railings with spigots and sleeves to provide tight joints
and secure installation.

3.4 ERECTION TOLERANCES

A. Maximum variation from plumb is 1/4 inch per story, non-cumulative.

B.  Maximum offset from true alignment is 1/4 inch.

C.  Maximum out-of-position is 1/4 inch.

END SECTION

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Do not delete the following reference information:

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FOR LANL USE ONLY

This project specification is based on LANL Master Specification 05 5200
Rev. 1, dated May 1, 2008.