Attachment N - UFGS 05 52 00 Metal Railings.pdf

SECTION 05 52 00 Page 1

SECTION TABLE OF CONTENTS DIVISION 05 - METALS SECTION 05 52 00

METAL RAILINGS

02/18

Table of Contents

PART 1 GENERAL

1.1 REFERENCES

1.2 ADMINISTRATIVE REQUIREMENTS

1.3 SUBMITTALS

1.4 QUALITY CONTROL

PART 2 PRODUCTS

2.1 FABRICATION

2.2 COMPONENTS

PART 3 EXECUTION

3.1 PREPARATION

3.2 INSTALLATION

3.3 FIELD QUALITY CONTROL

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SECTION 05 52 00

METAL RAILINGS

PART 1 GENERAL

PART 1 GENERAL.

1.1 REFERENCES.

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 180 (2012; R 2017) Standard Specification for

Corrugated Sheet Steel Beams for Highway

Guardrail

AASHTO M 314 (1990; R 2013) Standard Specification for

Steel Anchor Bolts

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B18.2.1 (2012; Errata 2013) Square and Hex Bolts and Screws (Inch Series)

ASME B18.2.3.8M (1981; R 2005) Metric Hex Lag Screws

ASME B18.6.1 (2016) Wood Screws (Inch Series)

ASME B18.6.3 (2013; R 2017) Machine Screws, Tapping

Screws, and Machine Drive Screws (Inch

Series)

ASME B18.6.5M (2000; R 2010) Standard Specification for

Metric Thread-Forming and Thread-Cutting

Tapping Screws

ASME B18.6.7M (1999; R 2010) Metric Machine Screws

ASME B18.21.1 (2009; R 2016) Washers: Helical

Spring-Lock, Tooth Lock, and Plain Washers

(Inch Series)

ASME B18.22M (1981; R 2017) Metric Plain Washers

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A27/A27M (2020) Standard Specification for Steel

SECTION 05 52 00 Page 3

Castings, Carbon, for General Application

ASTM A36/A36M (2019) Standard Specification for Carbon

Structural Steel

ASTM A47/A47M (1999; R 2018; E 2018) Standard

Specification for Ferritic Malleable Iron

Castings

ASTM A53/A53M (2020) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A108 (2013) Standard Specification for Steel

Bar, Carbon and Alloy, Cold-Finished

ASTM A123/A123M (2017) Standard Specification for Zinc

(Hot-Dip Galvanized) Coatings on Iron and

Steel Products

ASTM A153/A153M (2016a) Standard Specification for Zinc

Coating (Hot-Dip) on Iron and Steel

Hardware

ASTM A283/A283M (2013) Standard Specification for Low and

Intermediate Tensile Strength Carbon Steel

Plates

ASTM A307 (2014; E 2017) Standard Specification for

Carbon Steel Bolts, Studs, and Threaded

Rod 60 000 PSI Tensile Strength

ASTM A325M (2014) Standard Specification for

Structural Bolts, Steel, Heat Treated, 830

MPa Minimum Tensile Strength (Metric)

ASTM A449 (2014) Standard Specification for Hex Cap

Screws, Bolts, and Studs, Steel, Heat

Treated, 120/105/90 ksi Minimum Tensile

Strength, General Use

ASTM A467/A467M (2020) Standard Specification for Machine

Coil Chain

ASTM A500/A500M (2020) Standard Specification for

Cold-Formed Welded and Seamless Carbon

Steel Structural Tubing in Rounds and

Shapes

ASTM A512 (2006; R 2012) Standard Specification for

Cold-Drawn Buttweld Carbon Steel

Mechanical Tubing

ASTM A575 (2020) Standard Specification for Steel

Bars, Carbon, Merchant Quality, M-Grades

ASTM B26/B26M (2014; E 2015) Standard Specification for

Aluminum-Alloy Sand Castings

ASTM B221 (2014) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, SECTION 05 52 00 Page 4

Wire, Profiles, and Tubes

ASTM B221M (2013) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)

ASTM B429/B429M (2010; E 2012) Standard Specification for

Aluminum-Alloy Extruded Structural Pipe and Tube

ASTM C514 (2004; R 2020) Standard Specification for

Nails for the Application of Gypsum Board

ASTM C636/C636M (2013) Standard Practice for Installation of Metal Ceiling Suspension Systems for

Acoustical Tile and Lay-In Panels

ASTM E488/E488M (2015) Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements

ASTM F3125/F3125M (2019) Standard Specification for High

Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch

Dimensions 120 ksi and 150 ksi Minimum

Tensile Strength, and Metric Dimensions

830 MPa and 1040 MPa Minimum Tensile

Strength

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 898-1 (2013) Mechanical Properties of Fasteners

Made of Carbon Steel and Alloy Steel —

Part 1: Bolts, Screws and Studs with

Specified Property Classes — Coarse Thread and Fine Pitch Thread

NATIONAL ASSOCIATION OF ARCHITECTURAL METAL MANUFACTURERS (NAAMM)

NAAMM AMP 521 (2001; R 2012) Pipe Railing Systems Manual

1.2 ADMINISTRATIVE REQUIREMENTS.

1.2.1 Preinstallation Meetings

Within 15 days of contract award, submit fabrication drawings to the

Contracting Officer for the following items:

a. Iron and steel hardware

b. Steel shapes, plates, bars and strips

c. Steel railings and handrails

d. Aluminum railings and handrails

e. Anchorage and fastening systems

Submit manufacturer's catalog data, including two copies of manufacturers specifications, load tables, dimension diagrams, and anchor details for the following items:

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a. Structural-steel plates, shapes, and bars

b. Structural-steel tubing

c. Cold-finished steel bars

d. Hot-rolled carbon steel bars

e. Cold-drawn steel tubing

f. Concrete inserts

g. Masonry anchorage devices

h. Protective coating

i. Steel railings and handrails

j. Aluminum railings and handrails

k. Anchorage and fastening systems

1.3 SUBMITTALS.

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the government officer that will review the submittal for the Government.

SD-02 Shop Drawings

Fabrication Drawings; G, COR

Iron and Steel Hardware; G, COR

Steel Shapes, Plates, Bars and Strips; G, COR

SD-03 Product Data

Structural-Steel Plates, Shapes, and Bars; G, COR

Structural-Steel Tubing; G, COR

Cold-Finished Steel Bars; G, COR

Hot-Rolled Carbon Steel Bars; G, COR

Cold-Drawn Steel Tubing; G, COR

Concrete Inserts; G, COR

Masonry Anchorage Devices; G, COR

Protective Coating; G, COR

Steel Railings and Handrails; G, COR

Aluminum Railings and Handrails; G, COR

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Anchorage and Fastening Systems; G, COR

SD-07 Certificates

Welding Procedures; G, COR

Welder Qualification; G, COR

SD-08 Manufacturer's Instructions Installation Instructions

1.4 QUALITY CONTROL.

1.4.1 Welding Procedures

Submit results of welding procedures testing in accordance with AWS

D1.1/D1.1M made in the presence of the Contracting Officer and by an approved testing laboratory at the Contractor's expense.

1.4.2 Welder Qualification

Submit certified welder qualification by tests in accordance with

AWS D1.1/D1.1M, or under an equivalent approved qualification test. In addition, perform tests on test pieces in positions and with clearances equivalent to those actually encountered. If a test weld fails to meet requirements, conduct an immediate retest of two test welds and ensure that each test weld passes. Failure in the immediate retest will require that the welder be retested after further practice or training and make a complete set of test welds.

PART 2 PRODUCTS.

2.1 FABRICATION.

Preassemble items in the shop to the greatest extent possible.

Disassemble units only to the extent necessary for shipping and handling.

Clearly mark units for reassembly and coordinated installation.

For the fabrication of work exposed to view, use only materials that are smooth and free of surface blemishes, including pitting, seam marks, roller marks, rolled trade names, and roughness. Remove blemishes by grinding, or by welding and grinding, before cleaning, treating, and applying surface finishes, including zinc coatings.

Provide railing and handrail detail plans and elevations at not less than

1 inch to 1 foot. Provide details of sections and connections at not less than 3 inches to 1 foot. Also detail setting drawings, diagrams, templates for installation of anchorages, including concrete inserts, anchor bolts, and miscellaneous metal items having integral anchors.

Use materials of size and thicknesses indicated or, if not indicated, of the size and thickness necessary to produce adequate strength and durability in the finished product for its intended use. Work the materials to the dimensions indicated on approved detail drawings, using proven details of fabrication and support. Use the type of materials indicated or specified for the various components of work.

Form exposed work true to line and level, with accurate angles and surfaces and straight sharp edges. Ensure that all exposed edges are eased to a radius of approximately 1/32 inch. Bend metal corners to the

SECTION 05 52 00 Page 7 smallest radius possible without causing grain separation or otherwise impairing the work.

Weld corners and seams continuously and in accordance with the recommendations of AWS D1.1/D1.1M. Grind exposed welds smooth and flush to match and blend with adjoining surfaces.

Form the exposed connections with hairline joints that are flush and smooth, using concealed fasteners wherever possible. Use exposed fasteners of the type indicated or, if not indicated, use countersunk

Phillips flathead screws or bolts.

Provide anchorage of the type indicated and coordinated with the supporting structure. Fabricate anchoring devices and space as indicated and as required to provide adequate support for the intended use of the work.

Use hot-rolled steel bars for work fabricated from bar stock unless work is indicated or specified to be fabricated from cold-finished or cold-rolled stock.

2.1.1 Aluminum Railings

Fabrication: Provide fabrication jointing by one of the following methods:

2.1.1.1 Use flush-type rail fittings, welded and ground smooth with splice locks secured with 3/8 inch recessed-head set screws.

2.1.1.2 Ensure that mitered and welded joints made by fitting;

post to top rail; intermediate rail to post; and corners, are groove welded and ground smooth. Where allowed by the Contracting

Officer, provide butt splices reinforced by a tight-fitting dowel or sleeve not less than

6 inches in length. Tack-weld or epoxy-cement the dowel or sleeve to one side of the splice.

2.1.1.3 Assemble railings using slip-on aluminum-magnesium alloy fittings for joints. Fasten fittings to pipe or tube with 1/4 or 3/8 inch stainless-steel recessed-head setscrews. Provide assembled railings with fittings only at vertical supports or at rail terminations attached to walls. Provide expansion joints at the midpoint of panels. Provide a setscrew in only one side of the slip-on sleeve. Provide alloy fittings to conform to ASTM B26/B26M.

2.1.2 Steel Handrails

Fabricate joint posts, rail, and corners by one of the following methods:

a. Flush-type rail fittings of commercial standard, welded and ground smooth, with railing splice locks secured with 3/8 inch hexagonal-recessed-head setscrews.

b. Mitered and welded joints made by fitting post to top rail and intermediate rail to post, mitering corners, groove-welding joints, and grinding smooth. Butt railing splices and reinforce them by a tight-fitting interior sleeve not less than 6 inches long.

c. Railings may be bent at corners in lieu of jointing, provided that bends are made in suitable jigs and the pipe is not crushed.

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2.1.3 Protective Coating

Shop-prime the steelwork as indicated.

a. steel surfaces encased in concrete

b. steel surfaces for welding

c. high-strength bolt-connected contact surfaces

d. crane rail surfaces

Provide hot-dipped galvanized steelwork as indicated in accordance with

ASTM A123/A123M. Touch up abraded surfaces and cut ends of galvanized members with zinc-dust, zinc-oxide primer, or an approved galvanizing repair compound.

2.2 COMPONENTS.

2.2.1 Structural Steel Plates, Shapes And Bars

Provide structural-size shapes and plates, except plates to be bent or cold-formed, conforming to ASTM A36/A36M, unless otherwise noted.

Provide steel plates, to be bent or cold-formed, conforming to

ASTM A283/A283M, Grade C.

Provide steel bars and bar-size shapes conforming to ASTM A36/A36M, unless otherwise noted.

2.2.2 Structural-Steel Tubing

Provide structural-steel tubing, hot-formed, welded or seamless, conforming to ASTM A500/A500M, Grade B, unless otherwise noted.

2.2.3 Hot-Rolled Carbon Steel Bars

Provide bars and bar-size shapes conforming to ASTM A575, grade as selected by the fabricator.

2.2.4 Cold-Finished Steel Bars

Provide cold-finished steel bars conforming to ASTM A108, grade as selected by the fabricator.

2.2.5 Cold-Drawn Steel Tubing

Provide tubing conforming to ASTM A512, sunk-drawn, butt-welded, cold-finished, and stress-relieved.

2.2.6 Steel Pipe

Provide pipe conforming to ASTM A53/A53M, type as selected, Grade B;

primed finish, unless galvanizing is required; standard weight (Schedule

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40).

2.2.7 Concrete Inserts

Provide threaded-type concrete inserts consisting of galvanized ferrous castings, internally threaded to receive 3/4 inch diameter machine bolts; either malleable iron conforming to ASTM A47/A47M or cast steel conforming to ASTM A27/A27M, hot-dip galvanized in accordance with

ASTM A153/A153M.

Provide wedge-type concrete inserts consisting of galvanized box-type ferrous castings designed to accept 3/4 inch diameter bolts having special wedge-shaped heads, made of either malleable iron conforming to

ASTM A47/A47M or cast steel conforming to ASTM A27/A27M and hot-dip galvanized in accordance with ASTM A153/A153M.

Provide carbon steel bolts having special wedge-shaped heads, nuts,washers, and shims, galvanized in accordance with ASTM A153/A153M.

Provide slotted-type concrete inserts consisting of a galvanized 1/8 inch thick pressed-steel plate conforming to ASTM A283/A283M, made of box-type welded construction with a slot designed to receive 3/4 inch diameter square-head bolt with knockout cover; and hot-dip galvanized in accordance with ASTM A123/A123M.

2.2.8 Masonry Anchorage Devices

Provide masonry anchorage devices consisting of expansion shields complying with AASHTO M 314, ASTM E488/E488M and ASTM C514 as follows:

Provide lead expansion shields for machine screws and bolts 1/4 inch and smaller; head-out embedded nut type, single-unit class, Group I, Type 1, Class 1.

Provide lead expansion shields for machine screws and bolts larger than 1/4 inch in size; head-out embedded nut type, multiple-unit class, Group I, Type 1, Class 2.

Provide bolt anchor expansion shields for lag bolts; zinc-alloy, long-shield anchor class, Group II, Type 1, Class 1.

Provide bolt anchor expansion shields for bolts; closed-end bottom-bearing class, Group II, Type 2, Class 1.

Provide tumble-wing-type toggle bolts conforming to ASTM A325M

ASTM F3125/F3125M, ASTM A449 and ASTM C636/C636M, type, class, and style as required.

2.2.9 Fasteners

Provide galvanized zinc-coated fasteners in accordance with ASTM

A153/A153M used for exterior applications or where built into exterior walls or floor systems. Select fasteners for the type, grade, and class required for the installation of steel stair items.

Provide standard hexagon-head bolts, conforming to ISO 898-1 ASTM A307, Grade A.

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2.2.10 Steel Railings And Handrails

Design handrails to resist a concentrated load of 200 lb in any direction at any point of the top of the rail or 50 lb per foot applied horizontally to the top of the rail, whichever is more severe. NAAMM AMP 521, provide the same size rail and post. Provide pipe collars of the same material and finish as the handrail and posts.[Provide series 300 stainless-steel pipe collars.]

2.2.10.1 Steel Handrails

Provide steel handrails, including inserts in concrete, steel pipe conforming to ASTM A53/A53M or structural tubing conforming to ASTM

A500/A500M, Grade A or B of equivalent strength. Provide steel railings 2 inch nominal size or as shown in drawings,hot-dip galvanized and shop-painted.

Provide kickplates between railing posts where indicated, and consisting of

1/8 inch steel flat bars not less than 6 inches high. Secure kickplates as indicated.

Provide galvanized railings, including pipe, fittings, brackets, fasteners, and other ferrous metal components.

2.2.11 Aluminum Railings And Handrails

Provide railings and handrails consisting of 2.5 inch nominal schedule 40 pipe ASTM B429/B429M. Ensure that all fasteners are Series 300 stainless steel.

2.2.12 Safety Chains And Guardrails

Provide safety chains of galvanized steel, straight-link type, 3/16 inch diameter, with at least 12 links per foot, and with snap hooks on each end. Test safety chain in accordance with ASTM A467/A467M, Class CS.

Provide snap hooks of boat type. Provide galvanized 3/8 inch bolt with 3/4 inch eye diameter for attachment of chain, anchored as indicated. Supply two chains, 4 inches longer than the anchorage spacing, for each guarded area. Provide bolts and nuts as indicated, conforming to the requirements of ASTM A307. Locate guardrails safety chain where indicated. Mount the top chain rail feet 6 inches above the floor and mount the lower chain rail 2 feet above the floor.

PART 3 EXECUTION.

3.1 PREPARATION.

Adjust stair railings and handrails before securing in place in order to ensure proper matching at butting joints and correct alignment throughout their length. Space posts not more than 5 feet on center. Plumb posts in each direction. Secure posts and rail ends to building construction as follows:

a. Anchor posts in concrete by means of pipe sleeves set and anchored into concrete. Provide sleeves of galvanized, standard-weight, steel pipe, not less than 150 millimeter 6 inches long, and having an inside diameter not less than 13 millimeter 1/2 inch greater than the outside diameter of the inserted pipe post. Provide steel plate closure secured to the bottom of the sleeve, with closure width and length not

SECTION 05 52 00 Page 11 less than 25 millimeter 1 inch greater than the outside diameter of the sleeve. After posts have been inserted into sleeves, fill the annular space between the post and sleeve with nonshrink grout ora quick-setting hydraulic cement. Cover anchorage joint with a round steel flange welded to the post.

b. Anchor posts to steel with oval steel flanges, angle type or floor type as required by conditions, welded to posts and bolted to the steel supporting members.

c. Anchor rail ends into concrete and masonry with round steel flanges welded to rail ends and anchored into the wall construction with lead expansion shields and bolts.

d. Anchor rail ends to steel with oval or round steel flanges welded to tail ends and bolted to the structural-steel members.

Secure handrails to walls by means of wall brackets and wall return fitting at handrail ends. Provide brackets of malleable iron castings, with not less than 3 inch projection from the finished wall surface to the center of the pipe, drilled to receive one 3/8 inch bolt. Locate brackets not more than 60 inches on center.

Provide wall return fittings of cast iron castings, flush type, with the same projection as that specified for wall brackets. Secure wall brackets and wall return fittings to building construction as follows:

a. For concrete and solid masonry anchorage, use bolt anchor expansion shields and lag bolts.

b. For hollow masonry and stud partition anchorage, use toggle bolts having square heads.

c. Install toe boards and brackets where indicated. Make splices, where required, at expansion joints. Install removable sections as indicated.

3.2 INSTALLATION.

Submit manufacturer's installation instructions for the following products to be used in the fabrication of steel, stair railing, and, hand rail work:

a. Structural-steel plates, shapes, and bars

b. Structural-steel tubing

c. Cold-finished steel bars

d. Hot-rolled carbon steel bars

e. Cold-drawn steel tubing

f. Protective coating

g. Masonry anchorage devices

h. Steel railings and handrails

i. Aluminum railings and handrails

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j. Anchorage and fastening systems

Provide complete, detailed fabrication and installation drawings for all iron and steel hardware, and for all steel shapes, plates, bars, and strips used in accordance with the design specifications cited in this section.

3.2.1 Steel Handrail

Install handrail in pipe sleeves embedded in concrete and filled with nonshrink grout or quick-setting anchoring cement with anchorage covered with standard pipe collar pinned to post.

3.2.2 Aluminum Handrail

Affix to base structure by [flanges anchored to concrete or other existing masonry by expansion shields] [base plates or flanges bolted to stringers or structural-steel framework] [flanges through-bolted to a backing plate on the other side of a wall] [flanges lag-bolted to studs or other structural timbers]. Provide Series 300 stainless-steel bolts to anchor aluminum alloy flanges, of a size appropriate to the standard product of the manufacturer. Where aluminum or alloy fittings or extrusions are to be in contact with dissimilar metals or concrete, coat the contact surface with a heavy coating of bituminous paint.

3.2.3 Touchup Painting

Immediately after installation, clean field welds, bolted connections, abraded areas of the shop paint, and exposed areas painted with the paint used for shop painting. Apply paint by brush or spray to provide a minimum dry-film thickness of 2 mils.

3.3 FIELD QUALITY CONTROL.

3.3.1 Field Welding

Ensure that procedures of manual shielded metal arc welding, appearance and quality of welds made, and methods used in correcting welding work comply with AWS D1.1/D1.1M.

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