The Detroit times., 1911-02-20

height and increased four CD
inches ia thickness for each addt-
tional one hundred (ioO feet OF
Curtain Walls supported st In
tervals OF not over fifteen (1b)
feet may be twelve (12) inches
thick for the upper one hundred
and 'wsn nS ,gsr. Hs ,d feet "a, a
inches In thickness for each one
hundred u0o) feet OF fraction
thereof.
In buildings OF reinforced con-
crete where the columns are built
reinforced and OF full strength and
this ordinance. the walls between
columns may be curtain walls.
built as called for In this section.
Sec. Is. APRON WALLS. Apron
walls may be built eight (s) inches
thick II not more than twelve Q0
feet long, nor more than nve 90
feet high, otherwise they shall be at
least twelve CID inches thick and In
all cases they must be bonded into
the piers at each end.
Sec. Ia RESIDENCE PARTI-
TON WALLS. In residences eight
may be built two stories high and
permitted TO carry toists and beams
above. II the length between cross
brick or concrete walls shall not ex-
coed so feet. and II the clear span OF
not be over 2s feet long. Otherwise
the brick or concrete partition
walls must be IL inches thick. or
shall have piers or buttresses OF
pahtment may deem necessary.
should the clear span OF the
supported beams exceed thirty
eight feet. the supporting partition
walls must be sixteen inches thick.
wit A
piers and buttresses.
Sec. is. PIERS-BUTTRESS
Piers or walls with buttresses may
be used in place OF continuous
material called for In this ordi-
nance for these walls 10 used In
the piers or walls with buttresses
All such piers shall be built or
good. hard brick. laid In cement ana
sand mortar. with uniform joint:
throughout. facing and backing. and
OF sufficient size TO safely carry
the load intended for them.
The joints shall not exceed one
half (h) OF an inch In thickness.
sucn piers may be built OF REIN
forced concrete OF size and strength
as called for In this ordinance.
All piers shall be bonded as
walls. and where face brick are
used. different in size from the
backing brick. the same regula-
lions shall apply as for walls
All face brick in piers must be
laid to have full bearing OF mortar
under the entire surface or eacn
brick
The laying of face brick In piers
merely with the Joints around the
outer edge OF the brick 10 prohior-
All isolated brick piers shall
have bond stones at least nve COZ
inches thick, or steel plates at
least three-sixteenths t3-16) OF an
In LII 80 RNNll NJ
and spaced at intervals OF not more
than four (4) times the least d.
mension OF the piers.
Cap stones not less than nve
Cd inches In thickness. or steer
plates. proportioned in either anS case Sc
the full size OF the pier, shall De
set under all columns or sirders
bearing on piers.
In the case Of an external orlck
pier. the metal plate may be re-
duced sufficiently in size TO allow
four (4) inches OF brickwork TO
intervene between the edge or the
plate and the face OF the pier ex-
posed TO the weather.
Isolated piers shall not exceed
in height ten (1o) times their least
Sec. is. STONE PIERS UNDER
INTERIOR COLUMNS. stone Pliers
above, shall not be used In the In
terror OF any building -
Sec. IT. LINING EXISTING
WALLS. In case IL Is desired TO In
crease the height OF existing walls
which are less in thickness than re-
quired under this Ordinance, the
same shall be done by q lining OF
masonry TO form combined
thickness with the old wall OF not
less than four ca inches more than
the thickness required for new
wall under this Ordinance.
The new lining shall be support
ed on proper foundations
No lining shall be less than eight
(S) inches in thickness. and all I'm
ing shall be laid up In cement NOR
tar and thoroughly anchored TO the
old wall with suitable wrought
iron anchors. spaced not over two
CD feet apart, vertically and hori-
zontally and properly fastened or
driven into the old walls In stag
gered rows, the old walls being
first cleaned OF all plaster. and all
other coatings
shall be at least twelve 12) Inches
thick and must project at least
four ca inches beyond lining or
wall OF the story above.
There may also be used TO In.
crease the height OF buildings, steel
skeleton construction with ample
foundations and anchored to pres
Sec. Is. EXISTING PARTY
WALLS. Walls hertofore ouiit or
ness at the time of their erection
was I'm accordance with the then
existing laws, but which are not In
accordance with the requirements
in good condition. for the ordinary
use OF party walls, providing the
height OF the same il not increased.
and provided further that the cpn-
dition OF stability required by this
Ordinance are complied with.
Sec 10. HOLLOW WALLS. For
all walls built hollow, the same
quantity OF stone. brick or concrete
shall be used I'm their construction
as IL they Were built solid. and no
hollow wall shall be built unless
the different parts are connected
by proper ties, either OF brick.
stone or metal; placed not over
hollow wall shall have any bear
ing part less than eight CD inches
All hollow walls must be finished
Sec. 20 hollow TILE WALLS.
Eight (s), six (6). four ca and
three CD inch hollow tile or hard
burnt clay or porous terra Gotta or
Portland cement block. non-bearing
partitions may be built not exceed
Ing In their height measurement
or thirty (30), twenty-five CAD,
eighteen (1s) and twelve CID feet
respectively and In length not ex-
ceeding seventy-hve (75) feet. un-
less strengthened by proper cross
walls, piers or buttresses or built
In iron or steel frame work, when
the latter In Embedded In or insu-
lated by the same material, OF
which the partition IL CONSTRUCTED.
Sec. 81. TILE WALL Innings.
Where hollow tile or porous terra
Gotta blocks are used as lining or
Turing for walls. they shall not be
included in the measurement OF the
thickness OF such walls. except In
curtain walls not over one ID
story or fifteen (15) feet high, or
In apron walls.
Sec. a. RECESSES IN WALLS.