Evening bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1895-1912, 1911-06-08
STEEL FRAME CONSTRUCTION.

than ne-thirty-second of its unsup-
ported width, measured between CEN
ters of rivets transversely, or one
sixteenth of the distance between
centers of rivets in the direction of
the stress.
OBJ The ends of all columns shall
be faced to plane surface at right
angles to the axis of the column,
and the connections between them
shall be made with splice plates near
and above the floor line.
(c) Steel and wrought-iron col
umns may be made in one, two, and
three-story lengths.
ROLLED STEEL BEAMS.
Section "a. All rolled-steel beams
used in buildings shall be of full
weight and free from injurious de-
fects.
CONNECTIONS.
Section 25. All steel and iron franz
ing shall have shop and field connec-
tons made by riveting, IL possible.
When riveting is not possible, field
connections may be made with bolts.
RIVETING OF STRUCTURAL STEEL
AND WROUGHT IRON WORK.
Section 20. The distance from
center of rivet hole to the edge of
the piece shall not be less than one
and one-half times the diameter of
the rivet. Wherever possible, how
ever, the distance should be equal to
two diameters. When practicable,
rivets shall be machine driven. The
pitch of rivets shall never be less
than three diameters of the rivet nor
more than inches.
STEEL TRUSSES.
Section 27.-Trusses shall be of
! such design that there will be no un-
certainty In the stresses. All trusses
shall be held rigidly in position by
efficient systems Of lateral and sway
bracing.
WALL PLATES.
Section 2S.--Bearing plates of stone
or metal shall be used to reduce the
pressure on bearing wall to the
allowable working stress.
BRACING OF FRAMES.
Section 90 The iron or steel frame
of any building shall be carried up
true and plumb and be rigidly braced
from the floor beams of every story.
CAST IRON COLUMNS.
Section 30. In computing the
strength of a cast-iron column its
thickness shall be taken Mt its thinnest
part and the column shall be con-
demned II the computation shows that
the strength of the niece be less than
required by these regulations. Wher-
ever blowholes or intersections are
found I'm n cast-iron column which
reduces the area of the cross-s section
at the point more than ten per
centum, such column shall be con-
demned. Cast-iron posts or columns
without one side or back open, before
being set In place, may at the option
of the Building Inspector be drilled
to exhibit to the Inspector the thick
ness Of the metal. Such hole shall
be drilled, under the supervision of
the Inspector, by and ut the expense
of the owner or contractor.
| PAINTING OF STRUCTURAL
METAL WORK.
Section 81. All structural metal
work shall be cleaned of all scale,
dirt, and rust and except when EN-
bedded in cement or concrete shall
be thoroughly coated with at least
one coat of nonoxidizing paint before
leaving the shop or before erection.
After erection. all places left for shop
marks, all abrasions, and all rivet
heads and bolts shall be painted,
after which the entire frame shall be
painted with at least one additional
coat of tint different from the first.
All iron or steel used below the
ground water level shall be Enclosed
H. po,,,o,5 canapt cnpcrete