OCR Interpretation


Evening bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1895-1912, June 09, 1911, 3:30 EDITION, Image 11

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. , tvtnma bulletin, honoluuu, t. h., Friday, junc 9, 1911. -- vr r- -n
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BY AUTHORITY
HILL NO. 81.
ORDINANCE NO.
AN ORDINANCE RELATING TO
THE ERECTION, CONSTRUC.
TION, ALTERATION, REPAIR
AND REMOVAL OF BUILDINGS
' AND OTHER STRUCTURES IN
THE CITY AND COUNTY OF
HONOLULU.
De It Ordained By Tha Peopla of Tho
City and County of Honolulu,
PERMITB TO BUILD OK EXOA
VATH roll BUILDING FUR
poses.
Section 1. (n) No icrson or ici'
sons or" corporation shall orcct, re
pnli, change, alter, remove or ro-roof
nnj building or structure, or excav-
ato any cellar or lot for building pur
poses within tho City and County of
Honolulu, unless ho or they Bhnll fine
ohtaln a permit for tho work from tho
Building Inspector of tho City and
County of Honolulu. Tho applica
tion for such permit shall ho made
on u prescribed form, and shall stato
the site to bo occupied by tho pro
posed building or structuro or work
to bo dono, tho materials to bo used
In (he construction of tho same, tho
dimensions and estimated cost of tho
same, tho probablo tlmo required for
Its erection, tho use for which the
Biinio Is Intended and is to bo put
when completed, and tho names of
tho owner, tho architect, and tho
builder; provided, that tho provisions
'nf Mils Section shall not apply to
painting, papering, the restoration u
plastering, or to ropalr work not ex
ceeding In cost the sum of Ono Hun
dred Dollars ($100 00) and not affect
ting tho construction of outsldo or
party walls, 'chimneys or stairways or
tho height of building, and, provided
further, that It any framo building or
ktructuro or corrugated Iron building
heretofore constructed within tho flro
limits shall bo repaired, tho owner of
such building or structuro shall be
foro tho commencement of such re
pairs fllo with tlio llulldlng Inspector
n statement showing tho cstlmatod
cost of such repairs, and tho cost of
all repairs thcrcloforo mado upon
sutli building or structure.
(I)) Fees for permits and Inspec
tion by the llulldlng Inspector shall
bo as follows:
Work to cost inoro than $500, and
not moro than $1500, tho sum .of
MOO.
Work ocosl moro than $1500 and
not moro thun $2G00, the sum of
$4 00.
Work to cost moro than $2500 and
not moro than $3500, tho sum of
$S 00.
Work lo cost moro than $3500 and
not more than $5000, 'tho sum of
it; go.
Work to coat moro thun $5000 and
not moro than (100,000, $6 GO for tho
first $5000, and 10 cents for each $100
or fraction thereof In cxccsb of tho
sum of $5000.
Work to cost moro than $100,000,
$105 for tho first $100,000, and G
tents for each $100 or fraction thereof
In excess of $100,000.
1'lans and 8pi:cification8 to
be filed.
Section 2. (a) Any portion apply
ing for n permit for work, the cost of
which will exceed ono thousand dol
lars, shall Ilia with tho nullding In
spector plans and specification of tho
pioposed work. I'luns of ull build
ings shall show tho dotulls of con
utritctlon. Such pluns and specifica
tion shall become the property of the,
City and County of Honolulu and Bliull
bo for official uso only. Pencil plans
and specifications will not bo accept
ed (b) For work, the cost of which
will not exceed ono thousand dollars
($1000 00) a statement on tin ap
proved form setting forth tho partlc
iilarn of the work may be filed In lieu
of plans and specifications.
DUILOINa INSPECTOR TO ISSUE
PERMIT.
Section 3. The llulldlng Inspector
shall without delay asccitaln whothor
such plans and specifications embody
ull tho requirements applicable, by
law anil nrdlnanco to tho case, and
If tho requirements bo met, shall, up
on tho payment of tho slated fee,
Issue a permit to pcrforju tho woik
or Improvement, at tho pluco de
scribed and In accordance with said
plans and specifications.
EFFECT OF APPROVAL OK rLANS
AND SPECIFICATIONS.
Section 4. The approval of any
plHiiu and specifications shall not re
lievo tho architect, contractor or own
er from any liability us regards dam
ages or Iosb nf llfo from tho failure
of any stf'uctuio or pirt thoroof duo
to faulty or Improper design, mater
ials or workmanship, or from tiny lia
bility that may accruo by reason of
tho uso or occupancy by either of such
persons of the sidewalk, street or sub
sidewalk spare, or any liability that
may accrue by reason of the non
compliance by either of such persons
with any ot tho provisions of this
Ordlnunco. '
FOIIMS TO BE FURNISHED
istm.niNu INSPECTOR.
Section r. llbink application nnd
other forms provided for in this Ordi
nance shall bo furnished by tho llulld
lng Inspector upon request to any
person desiring u permit.
NOTICE TO BUILDING INBPECTOlt
BEFORE I1EOINNINO WORK.
Soctlon C. Written notlco of tho
intention to rommenco work shnll bo
given to tho llulldlng Inspector nt
least twenty-four hours boforo begin'
nlng tho work covered bj crinlt
BUILDING INSPECTOR'S RIGHT
t TO ENTER BU1LDINOB.
Section 7. The llulldlng Inspector,
so far as may bo necessary for the
performance pf his duties, rhnll havo
tho right 16 enter nt any rcasonablo
tlmo any now or unoccupied building
or any building under construction,
ropalr, alteration or removal or any
building nllcgcdjAe bo unsafe
EXPIRATION OF PERMIT.
Section 8. If tho work authorised
by nny permit Is not begun within
ninety days from tho dato thereof.
said permit shall bo thereafter void,
and beforo such work can bo com
menced a new permit shall bo takon
out, and tho snmc fees as herein
fixed for tbo original permit shall be
paid.
RELOCATION OF PERMIT.
Section 9. If work upon nny build
ing shall ho conducted In violation of
nny of tho provisions of this ordin
ance, or If work shnll bo abandoned
for a period of moro thnn, ninety
dn0, tho llulldlng Inspector shall re
voke tho permit.
ACCOUNTINll FOR FEES.
Section 10. Tho llulldlng Inspector
shall kcop accurate record In proper
folm of all fees rccclod undor this
ordinance, which record shall bo open
for public Inspection. Ho shall pay
all fees received by htm to tho City
and County Treasurer, within thirty
da s after receipt of name, and rond
cr nn nccount thereof to tho n'oard
of Supervisors onco each month.
POWER OF BUILDING INSPECTOR
TO ORDER REPAIRS.
Section 11. Whenever nny build
ing or any portion thereof, or
any structuro, chimney, smokestack,
stovo, oven, furnace or other appur-
tennnce connected with any building
or upon any premises ot pUwe.-ls
dangerous, defective or unsafe, tho
llulldlng Inspector shnll notify the
owner thereof, and shall order and
causa tha same to be torn down, al
torod, repaired or rebuilt, or such
work to bo done thorcon ns may bo
necessary lo render tho sanio safe,
nnd such nwnor shall forthwith
comply with such order.
BUILDINOS IN FIRE LIMITS DAM
AGED BY FIRE.
Section 12. It shall bo unlawful to
repair, reconstruct or uso any framo
or corrugated Iron building within
tho flro limits of tho City nnd County
ot Honolulu, that may bo damaged
by flro or other agency lo tho oxtcnt
of moro Uinn forty per cent of Its
vnluo immediately prior to such dam
ago. ALTERATION OF EXISTING
BUILDINGS.
Section 13. It shall bo unlawful lo
enlarge, build upon or rctnnvo any
building unless at tho corapplotlon of
such work tho wholo building, and
ovory part thereof, shall conform to
tho provisions of this Ordinance;
provided, however, that when nny
part of an existing building within
tho flro limits Is taken for the pub
lic jiho by condemnation, It shall ha
lawful to repair tho remaining por
tion of such building with materlalu
Blmllar to thoso of which tho build
ing was originally constructed. It
shall bo unhiwful to mako repairs or
alterations, excepting painting, paper
ing or lo-plnstoring, upon nny frame
or corrugated Iron building within
tho flto limits to an extent in ull (In
cluding repairs theretofore mado)
greater than foity per cent of Its as
803 Bed valuo.
APPEAL
Section 14. An applicant who has
been refused a permit or tho holdor
of a permit which has been revoked
by tho llulldlng Inspector may appeal
for an ordor requiring tho llulldlng
Inspector to Issuo or 'reissuo such
pormlt to mild applicant, to tho Hoard
of Supervisors. A written stntnmcnt
of the-matter In controversy nnd tho
reuKons for refusal or relocation shall'
bo mu.de by tho applicant and tho
llulldlng Inspector, either or both of
whom may bo called upon to testify
by tho Hoard of Supervisors. Tha
findings of a nlujorlty of tho Hoard
shall bo final.
DEFINITIONS.
Section 1G. In this ordinance tho
following torma shall liavo tho moan
lugs respectively assigned to them:
First claBs building: A first class
building shall consist of fireproof ma
terial thioughout, with Moors and
roof constructed of steel or rein
forced concroto beams, filled In be
tween wllh terr.i-tottu or cither ma
sonry arches or with concrcto or rein
forced concrete slabs; wood may
bo used only for flooring, windows
and door frames, sashes, doors, In
tcrlor finish, han,i rails for stnlrs,
necessnry sleepers bedded In tho
cement, nnd for Isolated fairings bed
ded In morlnr. Thoro shall bo no
air spaco between tho lop of any
floor arches and the floor boarding.
Second Class llulldlng: A Second
Class llulldlng is a building construc
ted 'with walls of masonry or con
crclo supporting tho adjacent floor
loads, with tho Interior floors sup
ported by studded partitions or by col
umns ami girders, with tho roof or
rpofg constructed of inrombustiblo
mntcilnl, with uimhustihlo materials
used In any part, except outer walls
and roofs, nnd with all wooden peti
tions nnd ceilings plastered.
Third Class llulldlng: Any build
ing or structuro which docs not como
within thu designation of cither a first
or serond class building, shall bo
deemed n Third Class Building.
Exemptions: Tho provisions of
this Ordlnanco relating to first nnd
second class buildings shall not ap
ply to voting booths nor to tempor
ary structures used to fncllltato Jho
erection of building-), provided that
when building Is completed tho tem
porary structuro shall be removed.
Foundations: That part of n wall
below tho lovel of tho highest part of
tho Btrcot curb, or, if a wall is not
on n street, that part of tho wall he
low tho lovel of tho highest ground
next to tho wall, or, that part of n
party or partition wall below tho cel
lar floor.
Party wall: A wall that soparates
two or moro buildings, and which In
used or adapted for tho uso of moro
than ono building.
Curtain Wall: An Interior or ex
torter non-bearing wall that Is sup
ported ot each floor level by the
Bkelcton framo of tho building
Partition wall: An Interior sub
dividing wall
Thickness of wall: Tho minimum
thickness of nny wall.
Story of a building: That part of
a building between tbo top of any
floor beams nnd tho top of the floor
or roof beams next ubovo.
Basement: That story of a build
ing not moro than forty per cent of
which lo below tho grndo of tho
street.
Cellar: That part of a building
more than forty per cont of which Is
Vclow tho grade of tho street, and n
third clnfcB buildings that part of
tho building which Is bolow tho Bills.
Hotel: A hotol Is n building used
as a place of entertainment of transi
ent gucata and hating moro than
twenty sleeping rooms' for guests.
Boarding or Lodging Itouso: A
boarding or lodging bouso Is a build
ing used for boarding or lodging pur
poses, containing not less than flvo
nor moro than twenty sleeping rooms
for guests.
Tenement: Tho term "Tenement"
shall apply to every house, building.
structuro or portion thereof which Is
designed for use or adapted to bo
used or used as a dwelling by moro
than thrco families living Indepen
dently of ono another or by more
than two families ubovo tho first
fltorv, having n common right In tho
ntnlrwajg, verandas, yards, wnto.'
supply or privies
OIIIcq building: An ofllco building
Is a building, tho wholo or' larger
part of which Is Intended or used for
ofllco purposes, no part of which Is
used for living purpobes except by
tho Janitor and his family.
Public hall: A public hall Is A
room for public assemblages, having
a total seating capacity or iuu or
moro persons, but which does not In
clude n theater.
Theater: A theater is a building
containing a mom used for theatrical
or oporatlo exhibitions or othor pub
lic ontertnlnmrnts, having it total
seating capacity of 300 or moro per
sons, upon tho stngo ot which mov
able scenery is used.
Hospital, sanatorium or asylum:
A hospital, sanatorium or asylum Is
a building In. which Blck, demented,
Injuied, Infirm, aged or orphaned per
sons nro housed, or Intended to bo
housed.
Warehouse: A warehouso 1h u
building used for tho storngo of soods,
wares or merchandise. '
Factory: A factory 1b h building
used for manufacturing purpoHeB
CALCULATIONS, AND STRENGTH
OF MATERIALS.
Section 10. QUALITY OF MATE
RIAL All materials used shall bo
ot good quality, for tho purposes for
which they uro intended, and shnll
conform to tho trade and manufac
turers' Bta'ndardB. Each class of ma
terial shall bo froo from lmporfec
tlona whoreby Its Btrongth or dutn
blllty may bo Impaired.
BRICK. Tho brick horehi rofened
to It the morchaiitablo brick ot im
ported or domestic manufacture
STONE. The stone herein referred
to Is tho building stono in common
use, nnd may be Island stone or Im
ported building stone and shall be
subject to Buch tests as the Building
lnpnectiir may dlic-' nnd u,stl "n
bo used whoro uuili teats show It to
ho Insufllclcnt for tho superimposed
load
SAND. Sand shall bo clean nnd
free from organic matter
LIME. Lime Bhall be the fresh
burned quicklime or ordinary lime
of commerce.
CEMENT Tho 'cement referred to
Is tho slnndard Portland cement ot
commerce, which, when tested, must
fill tbo requirements of Sec 37 (Ce
ment) CONCRETE Concrete shall bo
composed of Portland cement, sand,
and broken stone, iir cosrso gravel.
For the purposo of filling In above
floor nrches in fireproof buildings
clean boiler cinders may bo used ai
an nggrcgato in Cinder Concrete
LUMBER. Tho lumber used for
building pur pones shall bo tbo nntlvo
or Imported merchantable lumber ot
rommercc.
WROUGHT IRON. All wrought
Iron shnll bo fibrous, tough, and duc
tile CAST IRON. Cast Iron shall bo of
good foundry mixture, producing
a clean, tough groy Iron
STEEL. Structural steel shall bo
cither tho Bessemer or tho open
hearth steel, and shall conform to
Manufacturer's Standard Specifica
tions. TEST OF MATERIALS
Section 17. All structural mate
rials of whatever nature shall bo sub
ject to test at tho option of tho
Building Inspector to dctcrmlno their
charnctor and quality, by methods
prescribed by tho Amorlcan Society
of Testing Materials. No now class
of structural material shill ho used
until tho snmo has been tested nnd
found lo fulfill tho minimum condi
tions necessary for good and safo
building
CALCULATION OF STRESSES.
Section 18. Tho allowable working
stresses In materials, tho strength of
parts, nnd combinations nf materials
used, Bhall bo dclorntlned In accord
anco with tho rules nnd In tho man
ner prescribed by Btandard modern
nuthotttles on tho strength of mate
rials, applied mechanics, and tho best
engineering practice.
SAHE LOADS ON SOILS
Section 19. Good, Bouud, natural
earth shall not be nubjectcd lo n
greater loading than tho following, In
tons, per squuro foot:
Gravel and coarse rand, four;
Loam or flno sand compacted,
thrco;
Soft, wet sand, two
In tho construction of bulldiugH on
soft, wet Boll, piling or other op
proved methods of compressing the
soil uball bo used. When doubt
arises as to tho safo sustaining power
of tho ground upon which a building
Is to bo erected, tho Building In
spector may direct that tho sustain
ing power of the soil shall bo tested
by and at the expenso ot tho ownor,
In order that Its clans may bo def
initely determined
FOUNDATION VALLS.
Section 20. (a) No foundation
walls In bulldlngn ot Classes one
nnd two Bhall rest upon nny filled
or mndo ground Tho depths of foun
dations of Buch buildings as do not
rest on solid coral or rock shall bo
not less than tho depths prescribed
In tho follow lug schedule:
In nnn-stnry buildings, not less
than ono foot below natural surface
of ground; In two nnd three-story
buildings, not less than two feet bo
low natural surfaco ot ground; In
four-story buildings not less than
threo feet bolow natural surfaco ot
ground; In flvo and six-story build
ings not less than flvo feet bolow
natural surfaco of ground; In sevon,
eight, nlno nnd ton-Btory buildings not
less than nix feet below natural Bur
faco of ground
Provided, however, that nothing in
this section contained shall prevent
tho Building Inspector from requir
ing a greater depth for foundations,
it It Is necessary for tho stability of
said foundation!! and tho structuro
proposed to bo erected thereon. Tho
width of tho foundations ot tho bov
cral parts of nny building Bhall bo
proportioned to tho load to bo carried,
as horolnaftor specified.
(b) No course of brick footings
shnll projoct moro than two Inches
from tho footing of wnll abovo.
(c) Foundations shall bo propor
tioned to tho actual loads they must
sustain
STANDARD DEPTH OF FOUNDA
TION8. Section 21. Tho depth of ton feet
bolow tho ndjacont curb lovel Is horn
hy fixed as tho Btandard depth pf
foundations. Any person excavating
to n greator dopth than tho nbovo
standard Bhall protect the adjoining
property from nny damages duo to
said oxcavatlon No person construct
ing foundations to tho standard depth
or less shall bo llablo for damages
to contiguous buildings tho walls of
which havo not beon constructed U
tho standard depth.
RETAINING WALLS.
Section 22 Tho thickness of nil
retaining wulls Bhall be sufficient to
Bocure tho required stability nnd
Btrength The thickness ot ordinary
stono or brick rotalning walls at their
baso Bhall not ho Iosb than ono-uunr-
l(,r o lucIl l0Sut.
STEEL FRAME CONSTRUCTION
STEEL
Section 23 (n) No material shall
bo used. In any steel columns, of loss
than one-thlrty-sccond of Its unsup
ported width, measured between cen
ters of rivets transversely, or one
sixteenth of tho distance bclwcc6
centers of rivets In tho dliectlon of
tho stress
(h) The ends of all columns shall
bo fated to a plnno surfaco at right
angles to the axis or tho 'column,
and the connections between Ihem
shall bo made with spllco plates near
and nbovo the floor line
(c) Steel und wrought-tron col
umns may be mado In one, two, and
three-story lengtliR
ROLLED HTEF.L BEAMS
Section 21 All rolled-steel beams
used In buildings shall be of full
wrlght and free from Injurious do
fects. CONNECTIONS
Section 25 All steel nnd Iron fram
ing shall have shop nnd field connec
tions made by rlvetlnv, If pnrslblo
When meting is not possible, field
connections may bo made with bolls.
IUVETINa OF STRUCTURAL STEEL
AND WROUGHT IRON WORK.
Section 20. Tho dlutnnco from
center of rivet hole to tho edgu of
the pleco shnll not bo less than ono
nnd one-half times tho diameter of
tho rivet. Wherever possible, how
ever, tho dlstanco should be equal to
two dlnmetors. Whan practicable,
rivets shall bo machine driven Tho
pitch of rivets shall never bo Icmi
than three dlaraetors ot tho rivet nor
moro than 8 Inches
STEEL TRUSSF.S
Soctlon 27. Trusses shall bo of
such doslgn that there will bo no un
certainty in tho stresses. All trusses
shall ho held rigidly In position by
efficient systems of latornl and uwuy
bracing.
WALL PLATES
Section 28 Bearing plnloa of otono
or metal shall he used to reduce tho
pressuro on n bearing wall to tho
allawublo working stress
BRACING OF FRAMES
Section 23. Tho Iron or steel framo
of any building shall bo can led up
true and plumb and bo rigidly braced
from th floor beams of every story
CAST IRON COLUMNS
Section 30 In computing tho
strength of a cast-Iron column Its
thickness shall be taken nt Kb thlnncnt
part, and 1,110 column shall bo con
demned It tbo computation shovva that
tho strength ot tbo piece bo less than
required by theso regulations. Whcr
ovor blowholes or Imperfections nro
found in a cast-Iron column which
reduces the area ot tho cross-section
at tho point moro Ihan ten por
centum, such column shall be con
demned Cast-Iron posts or nolumnB
without ono side or back open, beforo
being set In place, may at tho option
of tho Building Inspector bo drilled
to exhibit to'tho Inspector tho thlck
nebs of tho metal Such holo Bhall
bo drilled, under tho supervision of
tho Inspector, by and tat tho expenso
of tho owner or contrnclor
PAINTING OF STRUCTURAL
METAL WORK.
Section 31. All structural motal
work Bhnll be cleaned of nil Kculc,
dirt, and niBt nnd except when em
bedded In cement or concrcto shall
bo thoroughly, coated with at least
ono cont of nonoxldlzlng paint beforo
leaving Iho shop or beforo erection.
After erection, nil places left for shop
marks, all abra-dons, and all rlvot
headH and boltR shnll bo painted,
after1 which tho ontiro frame Bhnll bo
pointed with nt least ono additional
coat of o tint different from tho first.
All iron or stool used bolow tho
ground water levol shall bo Inclosod
by Portland cement concrcto
SKELETON FRAME. ,
PROPORTIONING OF FRAME.
Section 32 III proportioning tho
Bkelcton frame each pnrt shall bo con
structed of sulllclent Btrongth to carry
tho Biipcrlmposed load without nsslst
nnco from tho walls below. Girders for
tho support of Inclosing walls Blmll
bo placed at tho level of tho floors
Irregular or eccentric loading shall
bo nvolded as far as poaslbto.
FLOOR SYSTEM.
Section 33 Tho floor system of n
skoloton frnmo shall bo constructed
with steel or reinforced concroto
floor beams, bo designed that tho-niax-Imnm
load Imposed shall not rauso
n greater deflection than pnn threo-hundred-sixtieth
part of tho Bpan.
Tho floor beams shall he tied togethor
at Intervals not oxceodlng eight
times tho depth of tho beams by suit
able tics or other approved uiothod.
FRAME PROTECTION
Section 34 (a) All Iron or Btool
used ns supporting members of the
external construction of a building
shall bo protected by a covoring oi
brlrk, torra-rotta, or othor fireproof
material completely enveloping Bald
structural member If of brltk or
torra-cotta, this covering shall not bo
less than 4 Indies In thickness. If
tho wholo column or framo bo cast In
concrcto, ull tho exterior membors
shnll bo Inclosed In concrete at least
2 Inches In thickness
lb) If n facing of gianlte or mar
ble, or other stone, which Is rubec
to disintegration by heat, la used, ev
ery benm and column uhall bo pto-
teclrd Independently of such facing
with not less than two Inches of flio
proof mitcrlnl In no c.iso shall
stono or marble column bo used to
carry u wall exceeding ono story In
height.
CONCRETE CONSTRUCTION.
PROPORTIONS AND MIXING OF
REINFORCED CONCRETE FOR
BUILDINGS
Section 35, Conrreto for slabs,
walls, beams nnd girders shall not
bo of a leaner mix than ono pirt ce
ment, two nnd nne-hnlf parts sand,
and live parts stone -Concrcto for
footings, foundations, sidewalks, etc ,
shnll not bo of a leaner mix than ono
part of cement, thtec parts mind nnd
six parts of stone.
PERMITS AND DRAWINGS
Section 30 Complete drawings,
specifications and details of all rein
forced concrcto construction, show
ing tho sl?a and position of nil re
inforcing members, shall bo tiled with
tho Building Inspector beforo n per
mit to erect tho same shall be issued.
Computations and strain sheets shall
bo submitted, when required.
CEMENT, SAND AND 1NERTS
Section 37 (a) Cement Only
Portland cement shnll bo used which
conforms to the Standard Spcclflra-:
lions nf tho American Society for
Testing Materials.
All cement shnll bo tested In lots
ot not moro than ono (I) car load,
nnd Iho Building Inspector may nt
any tlmo demand that certified copiet
of all test records bo Kubmlttcd .to
him for examination
Tho minimum requirements for
lenallo strength for briquettes one
(1) inch squnro In Boctlon, Bhall bo:
Nent Cement
24 hours In moist nlr 200 lbs
7 days (ono day In nlr, bIx In
water) M0 lbs
28 days (ono day In nlr,
twenty-seven In water) ...BOO lbs
Ono part cement, three parts
standard sand
7 d.ivs (ono day In air, six In
water) 1 '"8
28 days (ono day In ulr,
twcntv-sovcn In water).. .250 lbs
(b) Sand Sand used for concrcto
Bhnll be clean und frco from refuse,
nnd shall contain not less than one-
half Its voluma of crushed lava rock
sand
(c) Aggregate Tho nggregite
shall consist of broken stono Ireo
from dust, or clean gravel
Tho llulldlng Inspector may demand
that nny material In question bo test
ed nt Iho expenso of tho owner, In
an approved testing laboratory, and
tbn results submitted (n him to aid in
forming his opinion ns to Iho fltnoss
or unlllucss of Iho material for tho
piirioso Intended.
MATERIALS PROHIBITED
Roellnn 38. Tho following llicrta
Bhall bo excluded In floor slab con
struction: Llmo stono, holler clnderp,
plaster of parls. sulphato of lime, nnd
all similar unsultnblo matotlals.
CEMENT BRICK.
Section 39. Brick mado of sand
nnd Portland coment of tho samo di
mensions as common brick, may bo
substituted for common brick If tho
uso ot such brick will In no way en
danger tho Btnblllty or Bafoty ot tho
wall according to Its exposure.
ARTIFICIAL STONE.
Section 40. Artificial stono mado
of Portland cemont and Incombusti
ble and flro nnd wntorproof material
may bo used as u substitute for any
natural stone, but no artificial utono
containing moro than twelve (12) per
cont of llmo or crushed llmo stono
ni an Ingrodlent shall bo used In n
lint el, or bonrlng part In nny build
ing over threo (3) stories high.
BUILDING BLOCKS.
Section 41 Cement or concroto
building blocks with hollow spaces
not exceeding ono-thlrd (1-3) tho
area of the block and having an nn
nulus of uniform thickness, and not
oxcccdlng nlno (9) Inches high nor
less than olght (8) Inchca on tho
beds may bo substituted for brick In
all "buildings ot tho second class In
which tho thickness and heights of
walls (as given In Tnblo of thickness
of walls horelnbolovv), up to four (4)
stories, nro prescribed, provided, that
nn eight (8) Inch block shall bo deom
cd tho equivalent of ouo (1) brick lit
thickness of messuro,
MEASURE OF THICKNESS.
Section V. Tho required thickness
of nil concroto wpiu or flrejirooflng
or floor construction Is for tho full
thickness nf tho material only, ox
cluslvo of tho plastering or floor bal
lasting THICKNESS OF WALLS
Section 43. Concroto walla without
olnforrcmcnt shnll bo of tho full
thickness given In tablo for masonry
walls hereinafter sot out
Reinforced concrete cxtorlor boar
Ing walla and pttty and dlvMou walli.,
either hearing or noti-boarinc In
which thoro Is sufllrlrnt relnfnrromont
to snfely sustain all Imposed stresses
rhall bo not less than two-thirds tho
thickness glvon In table for masonry
walls hereinafter set out.
Reinforced concrete exterior noti
he&rlni' curtain walls and "Interior
non-bearlug paitltleji walls, shall ho
of not lorH than Iho following mini
mum thicknesses.
a
Thickness at each story,
No ot stories In
bldg Basement. 1 2 3 4 G 6
Ono .... 12 4
Two .... 12 4 4
Threo ... 12 C 4 4
Four ... 16 8 B 4 4
Five ... IP, 10 8 G 4 4
Six . .. 1 12 10 8 0 4 4
REINFORCED CONCRirTE CON
STRUCTION. Section 41 By reinforced concrete
N meant conctcto In which steel M
embedded In such a position that It
will resist all tensllo stresses nnd
assist In the resistance to shear along
proper structural lines so that tho
stresses In the combination can bo
ascertained by computation nnd veri
fied b) tests
Tho roncrete should bo mixed 'n
Kilt Ii proportions nnd so handled thtt
titter It Is placed In the form, all voids
In tho aggregate will bo filled with
mortar, and all voids In tho mortar
filled with cement
Thlrtj (30) days after mixing tho
concrete shall dovclop a crushing
strength of not less than two thou
sand (2,000) iKiunds par squaro Inch.
REINFORCED CONCRETE
STRESSES
Section 45 , Tho following unit
working strcbscs shall not bo excocd
cd: -
Lbs. per sq In.
Iron In tension 12,000
Medium steel In tension 10,000
High steel In tension 20,000
Steel In compression 10,000
Steel In shear - 10,000
Concrcto In direct comprcs,
slon GOO
Concroto cxtromo flbro In com
pression 7C0
Concrete lu shear GO
REINFORCED CONCRETE ASSUMP
TIONS. Section 40 All lelnforced concieto
work shall ho ileslgnod In accord
ance with best Btandard onglneortng
practice Tho following assumptions
may bo made
When beams and girders aro mado
monolithic with tho floor nlnb, they
may bo computed as "T" beams Tho
width of Blah which nny bo consider
ed pint ot tho beam will depend upon
tho shearing stresses, but In no caso
shall such total width exceed thrco
times tho width of tho boam
REINFORCED CONCRETE COI
UMN8. Section 17 Tho column rods chutl
be tied together by steel hoops siac
ed not moro than tvvclvo (12) inches
apart.
When the unsupported length of ii
concrete column exceeds twelve (12)
times Its least cldo or diameter, tho
allowable compression of tho concrete
shall bo taken ns five hundred (600)
pounds multiplied by the Icist aldn
or diameter of tho column In Inches
and divided by tho unsupported length
In feet
For exterior columns auhject to cc
contrlc loading or bending of nn In
determinate amount, tho Bbovo stress
shall bo icduccd nt least twenty (20)
per cent. When tho bonding stresses
In a column can be definitely determ
ined, Iho combined bending and direct
strosses shnll not oxcecd flvo hun
dred (500) pounds per squnro Inch.
In buildings ovor four (4) stories
high sulllclent steel reinforcement
rhall ho used to carry nt least seveu-ty-flvo
(75) per cent of tho dead load
of Iho floors and root figuring ten
thousand (10,000) pounds per squaro
Inch on tho steel, except when In
buildings of nny number of storlostbo
columns aro largo enough so that the
concroto ulono will carry, tha total
Hvo and dead loads with a fttrcsa ot
not ovor flvo hundred (500) pounds
por squaro Inch tbo nmount of steel
reinforcement may bo reduced In not
less (linn ono (1) per cont of tho
cross soctlon area of tho column
Proier provision shnll bo made for
transmitting tho stresses nt the
splices In tho column rods.
In buildings over tour (4) stories
high all splices In thu reinforcing
ntcol below tho upper thrco (loots
shall ho mado by moans of riveted
connections, slcevn nuts, turnhurkloa,
or Konio approved iosltlvo connection.
COLUMNS FILLED WITH CON
CRETE. Section 48 Columns compose! ot
structural Btccl shape, latticed togeth
er by riveting und filled In solidly
nnd surrounded by coucrotn, may bo
computed an reinforced concrete col
umns oxcepl that tho allowable stross
In tliQBtcol may bo Increased totwelvo
thousand (12,000) pounds por aquaro
Inch.
CONCRETE COLUMN PROTECTION
Section 49. Tho outer shell ot n
concroto filled steel column shall ho
considered nnlj as a flroproof cover
ing. PROTECTION OF STEEL.
Section GO For tha purpose of flro
proteitlon tho reinforcing steel shall
bo kopt nway from tho surfaco ot tho
concroto one and one-halt (IK) Inches
In columns, ono Inch In beams and
glrdois, and H Inch In slabs.
STEEL IN CONCRETE.
Section 51. All reinforcing steol
shall bo subject to test by an approv-
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