3.1.3
Insulation
Shop- and field-applied insulation shall be as specified in Section 15080A
THERMAL INSULATION FOR MECHANICAL SYSTEMS unless otherwise specified.
Breaching, unjacketed boilers, [dust collectors,] and induced draft fan
housings shall be insulated with magnesia, mineral wool, calcium silicate,
or approved mineral insulation. Insulation may be either block or blanket.
Joints in the insulation shall be filled with magnesia, mineral wool, or a
suitable cement.
3.1.4
Foundation
Boiler foundation shall be constructed of [21] [_____] MPa [3000] [_____]
psi concrete as specified in Section 03300A CAST-IN-PLACE STRUCTURAL
CONCRETE. Anchor bolts shall be set accurately and shall be of adequate
length to install the boiler. When embedded in concrete, anchor bolts
shall be provided with plates welded on the head and shall be protected
against damage until the equipment is installed. Plates shall conform to
ASTM A 36/A 36M.
3.1.5
Equipment Structural Support
3.1.5.1
Structural Steel
Structural steel equipment supports shall be designed in accordance with
Section 05120 STRUCTURAL STEEL.
3.1.5.2
Support Steel
**************************************************************************
NOTE: Provide seismic requirements, if a Government
designer (Corps office or A/E) is the Engineer of
Record, and show on the drawings. Delete the
bracketed phrase if seismic details are not
included. Sections 13080 and 15070A, properly
edited, must be included in the contract documents.
**************************************************************************
Support steel shall be designed to resist all applicable dead and live
loads. Design for seismic loads shall be as pecified in Sections 13080
SEISMIC PROTECTION FOR MISCELLANEOUS EQUIPMENT and 15070A SEISMIC
PROTECTION FOR MECHANICAL EQUIPMENT [as indicated]. A complete loading and
support diagram shall be shown on the detail drawings. Equipment supports
shown on the contract drawings are for a general equipment layout and may
not conform to the system furnished. Piers and footings may be relocated
to suit equipment furnished if no interference with other footings is
encountered. Support steel shall comply with ASTM A 242/A 242M and be
fabricated in accordance with the provisions of Section 05090A WELDING,
STRUCTURAL or field bolted using ASTM A 325M ASTM A 325 high strength bolts.
3.1.5.3
Column Base Plates
Column base plates shall be designed to bear on a [21] [_____] MPa [3000]
[_____] psi concrete floor slab.
3.1.5.4
Anchor Bolts
Anchor bolts shall be ASTM A 307 anchor bolts.
Anchor bolt sizes and
SECTION 15846A
Page 60
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