The Olneyville times. (Olneyville [Providence, R.I.]) 1887-1917, 1909-09-03

shall be satisfactory 20 Ike Inspector
Wherever walls are decreased in thicx-
ness, the top course OF the thicker wall
shall be made solid.
No wall or any part thereof, composed
OF hollow concrete blocks, shall be loaded
10 an excess Of ten tons per superficial
foot area. INCLUDING the weight OF wall.
and no block shall be used that shows a
crushing strength OF less than ten times
the number OF pounds per square inch IL
Is designed 10 sustain at the age OF thirty
Gays, with no deductions for hollow
spaces in figuring the area.
Concrete lintels spanning openings over
four feet shall be reinforced by iron or
steel rods satisfactory TO the Inspector
and shall rest on solid concrete blocks.
No hollow concretS building blocks shall
be used in the construction OF any build
ing under thi~ act until the maker OF said
blocks has submitted his product 10 the
full test required by the Inspector, and
placed on file with him a certificate from
"A reliable testing laboratory showing that
samples from the lot OF blocks 20 be used
have passed the requirements. The max
er or user OF such blocks must be ready
at all times during the progress OF work
on any building TO furnish at their own
expense tests. satisfactory TO the in
spector, OF the blocks being used in said
building
a brand or mark Of identification Of
the manufacturer must be impressed in
or otherwise permanently attached 70
each block Any block which fails 10
stand, at the age OF thirty days. the
tests required. shall in no case be used.
FACTORS OF SAFETY.
Sec. 2G. 10 computing the working
stresses In the framing or construction Of
any building unless the safe loads are
otherwise prescribed i'm this act. not less
than the following factors of safety shall
be used:
For wrought iron or steel subject 10
compression, tension, or transverse strains
90.
For cast iron subject 10 tension or
transverse strains QO.
For cast iron subject 10 compression
for columns Of ordinary or short lengths
according TO the uniformity OF the thick
ness OF shell 90 10 (0.
For cast iron long columns according 10
the uniformity Of the thickness Of the
shell tS 10 G0. Cast iron columns shall
be tapped with not less than three
eighths-inch holes TO show thickness of
shell whenever required by the inspector
For timber subject TO tension and trans
verse strains 90.
For timber compressions in short col
umns or posts %.
For timber I'm long columns or posts
not over twenty (2O) diameters 90.
Natural or artificial stone or masonry
or concrete 00).
The stresses used in materials hereafter
TO be used i'm construction shall be the
calculated stresses due TO their dead load
plus the applied live load. The allowable
factors or units Of safety or the dimen-,
sions OF each piece or combination of
materials required in building or struc-
ture, II not given in this act. shall be
ascertained by computation according to
the rules prescribed by the standard
modern authorities on the strength Of
applied mechanics and engi-
neering practice: Provided, that the in
spector may require the owner or archi-
tect 10 submit a certified copy Of such
or strain sheets for exami-
nation and approval with the application
For the building permit
Whenever structural material OF what
aver nature shall be subjected to tests 10
determine its character and quality, the
tests shall be made under the supervision
" the inspector. H. he may direct the
owner 10 file with him a certified copy of
the results Of tests such as he may direct
shall be made.
No new type or combination OF struc-
.ural material shall be used in any struc-
.ure until il has been tested and found TO
'ulhll the minimum conditions and tests
required ley this act for materials used for
ike purposes.
THEATRES. ROOF GARDENS. ETC.
Sec q. Every building hereafter erected
)r altered to be used as a theatre. shall
oe subject 10 the following provisions OF
his section and shall he Of fireproof (ab-
;olute) construction throughout. except
hat the flooring boards. the Gaping to
gallery fronts and that portion Of the
stage floor. usually equal to the width
" the prOSCenium opening. used in work
ng scenery, traps, or other mechanical
apparatus. may be of wood: Provided,
hat the joists and flooring Of said stage
IN the underside shall he thoroughly COW
red with incombustible material. and
hat no flooring used thereon shall be less
han one and one-eighth inches thick;
md except that the iron or steel work
" the stage Of the fly galleries and of
he rigging loft need be freproofed.
Every theatre built in a block not on a
'orner shall have an open court or pas
,ageway on both sides extending from
he proscenium line 10 the line Of the
street on the front. or. in case the build
ng abuts on a street both in front and
ear. these passages may extend from
he line Of the auditorium which is next
parallel with or opposite the front street
n the line Of the rear street instead OF
o the front street. These passages shall
,c at least six feet wide throughout their
ength. and shall not be closed by any
OCked EllC OF NOOTWdNs lltN Sllill I'M
nediatcly adjoin the auditorium, or
.idc passage or lobby directly connected
herewith These passages shall be open
O the sky opposite the whole depth OF
he auditorium. but may be carried out
o the street front or rear through pas
iages enclosed by brick walls or other
ireproof material equally efficient, and
covered by a solid brick or concrete vault
Il least eight inches thick. such covered
passages to be each not less than eight
eet wide and ten feet high throughout.
Every theatre built upon the corner OF
vo streets shall have one inner court OF
,assageway on the side thereof which Is
parallel with or opposite the side street
inc of the building. such passage to be
u the same description and requirements
IS the passages provided for in the pre-
,eding paragraph.
Nothing i'm this act shall be construed
q prohibit the use OF any part or thea
or building for stores. offices. or for hab-
tation: Provided. that the parts so used
,hau be built with exits 20 the street en-
irely distinct from the rest OF the build
nc bv solid masonry walls, without any
,penings i'm the same.
In all theatres the entrances eall not be
more than one step above the level OF the