Complete Compiled Specification.pdf - Peck Ormsby Construction

3.02 WELDING
A. Where welded connections are indicated, comply with Paragraph 2.03 F. of this section.
B. Do not weld rebar, except as specifically detailed in the Drawings. In such cases, use only
AWS standards. Do not substitute reinforcing bars for deformed bar anchors (DBA), machine
bolts, or headed studs.
C. Stud Welding: Conform with manufacturer's specifications. Welding shall be field tested to
comply with IBC Standards.
3.03 BOLTED CONNECTIONS
A. Use ASTM A-325N bolts for all steel-to-steel connections, unless otherwise noted. Tighten
bolts by the turn of the nut or direct tension method. Provide hardened washers beneath
turned element. Provide beveled washers where the slope of the outer face exceeds 1 in 20,
with respect to the plane normal to the bolt axis.
B. Provide standard washers under all nuts or anchor bolts.
3.04 INSTALLATION
A. Fastening to In-Place Construction: Provide anchorage devices and fasteners where
necessary for securing miscellaneous metal fabrications to in-place construction; including
threaded fasteners for concrete and masonry inserts, toggle bolts, through-bolts, lag bolts,
wood screws, and other connectors as required.
B. Cutting, Fitting, and Placement: Perform cutting, drilling, and fitting required for installation of
miscellaneous metal fabrications. Set work accurately in location, alignment and elevation,
plus, level, true, and free of rack, measured from established lines and levels. Provide
temporary bracing or anchors in formwork for items which are to be built into concrete
masonry or similar construction.
C. Fit exposed connections accurately together to form tight hairline joints. Weld connections
which are not to be left as exposed joints, but cannot be shop welded because of shipping
size limitations. Grind exposed joints smooth, and touch-up shop paint coat. Do not weld, cut,
or abrade the surfaces of exterior units which have been hot-dip galvanized after fabrication,
and are intended for bolted or screwed field connections.
D. Setting Loose Plates: Clean concrete and masonry bearing surfaces of any bond-reducing
materials, and roughen to improve bond to surfaces. Clean bottom surface of bearing plates.
E. Set loose leveling and bearing plates on wedges, or other adjustable devices. After the
bearing members have been positioned and plumbed, tighten the anchor bolts. Do not
remove wedges or shims, but if protruding, cut off flush with the edge of the bearing plate
before packing with grout. Use metallic nonshrink grout in concealed locations where not
exposed to moisture; use nonmetallic nonshrink grout in exposed locations, unless otherwise
indicated. Pack grout solidly between bearing surfaces and plates to ensure that no
voids remain.
3.05 INSTALLING PIPE BOLLARDS
A. Anchor bollards in concrete as indicated on drawings.
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION MARCH 2, 2009
METAL FABRICATIONS 05500 - 6