Lead-lined panels shall be applied over supports specified in Section 06100A
ROUGH CARPENTRY. The method of predrilling or drilling pilot holes for
fasteners shall prevent deformation of the fastener and shall prevent
distortion of the panel. Lead-lined panels shall be butt-jointed and shall
be placed over supports with lead linings placed next to supports.
Effective lead laps at corners and around frames of openings shall be made
with panels having lead extensions or with sheet-lead strips not less than
the thickness of the lead in the panel. Fasteners shall be set 2 mm 1/16
inch below the face of panel or joint strip. Fasteners shall be finished
with filler or plugs to match the panel. Sides and ends of panels shall be
secured at approximately 200 mm 8 inches on centers with fasteners to
penetrate 40 mm 1-1/2 inches into supports. At intermediate supports,
panels shall be fastened in a uniform pattern at approximately 400 mm 16
inches on centers. Fastening at joints shall conform to one of the
following methods:
3.4.1
Joints With Lead-Lined Joint Strips
Joints shall be covered with sheet-lead strips not less than the panel
thickness and not less than 50 mm 2 inches wide. Joint strips shall be
secured to supports with fasteners located in the center of joint strip at
approximately 200 mm 8 inches on center.
3.4.2
Joints Backed with Lead Strips
Sheet-lead strips not less than the panel thickness and not less than 40 mm
1-1/2 inches wide shall be installed on supports at panel joints. Lead
strips shall be secured at outer edges of strips. Finish molding strips
shall match the panel finish. Finish molding strips shall be installed to
cover joints and shall be secured with fasteners at approximately 200 mm 8
inches on centers.
3.5
LEAD-LINED LATH
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NOTE: Lead-lined lath with lead 8 mm (5/16 inch)
thick or less will be 400 x 1220 mm (16 x 48 inches)
with lead extensions on two sides for lapping and
installed with the long dimension at right angles to
supports. Lead-lined lath with lead over 8 mm (5/16
inch) thick will be 300 mm (12 inches) wide by
manufacturer's standard length with lead cut the
same size as the lath installed with the long
dimension parallel to supports. Drawings will
indicate support spacing at 300 mm (12 inches) on
centers where the 300 mm (12 inch) wide lath is used.
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Lead-lined lath shall be applied over supports specified in Section 06100A
ROUGH CARPENTRY and Section 09200A LATHING AND PLASTERING. The method of
predrilling or drilling the pilot holes shall prevent deformation of the
fastener and shall prevent distortion of the lath. Lead-lined lath shall
be applied with long edges at right angles to supports and with lead
linings placed next to supports.
3.5.1
Joints
[End joints shall be placed over supports and shall be staggered in
SECTION 13090
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