Milford chronicle., 1954-07-30

VISION shall be made lrf proper nSdt
points Of load cOnce 1tratlon-
s. Cavity walls and hollow walls
(a) Height and thickness.
(1l Cavity walls and hollow WallS
shall not exceed 35 feet IN height
CAVITY walls, exclusive OF tne SeAies,
and hollow walls shall be not less IN
than required for solid mas
onry walls In subsection 3 Of this sec
tion.
90 IN cavity walls, neither the fac
ing nor backing shall be less tnall
3# inches in nominal thickness ane I
the cavity shall be not less than z
inches nor more than 3 inches IN
width.
(b) Lateral support Cavity walls
shall be supported at right angles %
the wall face at intervals not exceed
ing IA times, and hollow walls &C
intervals not exceeding rs times the
nominal wall thickness. Such lateral
support shall conform to subsection
10 Of this section.
(ij In hollow walls the parts Of same
shall be connected b. bonds OF brick,
stone or the material of the wall,
placed not more than "a inches aparl
Ia either directioni but the parts shall
not be deemed to act together IN the
support of loads unless such bonds are
of a size and design to fully develop
the strenRth Of either part.
(2l In cavity walls the facing and
backing shall be securely tied together
with suitable bonding ties Of ade-
Quate strength. A 3/16-inch diameter
steel rod or metal tie Of equivalent
/ stiffness coated with nOncOrroolnB
metal or other approved protective
! coating shall be used for each square
I feet of wall surface. Where hollow
masonry units are laid with the cells
vertical, rectangular ties shall be us
j alr fr4 Of Ia rInE
shall be bent to 80 degree angles to
1 provide hooks not less than inches
long. Ties shall be embedded In hor-
igontal joints Of facing and backing.
4 Additional bonding ties shall be pro-
a vided at all openings, spaced not more
than 8 feet apart around the perim-
eter and within 10 inches of the OPEN
ing Cavity walls of plain concrete
shall be reinforced as provided toT
solid walls Of plain concrete in sub
section 3 Of this section.
Id Bearing.
(l) In hollow walls or cavity walls
suitable provision shall be made al
each line Of floor beams and wherever
load concentrations occur, to insure
proper bearing.
walls, in which the cells of hollow
Funits are laid vertical, are decreased
In thickness, the units in the tol
course Of the thicker wall shall D'
Fflltu SUlAulN VIII llOlNdE VI AAe.e1lAA
or the exposed openings in such tOl
, course shall be covered with slabs o
hard burned tile or concrete at leas
one inch in thickness or the opening
may be stopped in some other ap
b proved manner.
fe) DRAINAGE. In cavity walls tn
: cavity shall be kept clear Of morta
y ( drowning during construction. Ap
( proved flashiAg shall be installed an
! adequate drainage provided to kee
dampness away from the backing.
z. Faced walls.
(al Material Materials used 70
facing shall be not less than "a inche
thick, and in no case less IN thicknes
than * the height of the unit.
\ (b) Allowable stresses. Where bono
q ed to the backing as prescribed below
z the full cross section OF both the faC
:, ing and the backing may be cor
y / sidered In computing the stresses.
(c) Thickness. Faced walls shall
not less in thickness than is require
- for masonry walls OF either OF q
y types forming the facing and Il
y backing Where bonded to the bacl
Il ing as prescribed below, the facir
= may be considered a part Of the wa
= thickness.
c (d) Bond
y y (1) Brick facing shall be bonded
y the backing as prescribed Tor sol
masonry walls in subsection (d)
- this section.
n (2) Ashlar facing Of either natur
~ or cast stone shall have at least
q per cent Of the superficial area e
- tending not less than inches IN
- the backing to form bond gf0nes. VIII
= Z shall be uniformly distributed throug
II out the wall.
- (3) When walls of hollow mason
~ units are faced with hollow units, t
- facing units shall be bonded TO {
- backing as required for walls Of h
- low masonry units In subsection
- Of this section.
le 8. Attachment Of stone facing.
" cry projecting stone, and, exec
~ when alternate courses are full DO
Se course, every stone not a bond ste
4 shall be securely anchored to
backing with corrosion resistant me
anchors with cross section OF
IN less than O.2 square inch. There 81
- - be at least / anchor to each stone a
tls not less than anchors for each StC
'iie ~ more than 2 feet in length and
~ - square feet in superficial area. Fl
it0 ing stones not over ~ square feet
~ area shall have at least I anchor
no each square feet Of superficial 4
~ area.
m 9. Solid waIlslof plain concrete.
~ (a) Thickness. The minimum thi
ecu ness of walls Of plain concrete may
- 2 inches less than that required
~ solid masonry walls, but not less Il
ith 8 inches, except that 6-inch walls n
be used where specifically permit
- ~ by subsection (a) CD Of this s
~ ~ tion.
GOT OBJ Lateral support solid walls
l0t plain concrete shall be supported
1ca right angles to the wal face *
DlSS tervals not exceeding 2O TIRES
nominal wall thickness. Such lat
support shall conform to subsection
zi,z of this section.
s .,a (c) Reinforcement around openil
~ ]. ~ y Reinforcement symetrically dispe
ans in tie thickness OF the wall shall
placed not less than 1 inch ahOve'
80 2 inches below openings and ext
~ ~ not less than "a inches each side
i such openings or be OF eQulva
l@lall @ length with hooks The reinfO
ecu ment both above and below shall (
sist Of one "a Inch round rod for {
e.l.s s inches in wall thickness or frac
~ thereof
SCI support required by subsectiOns
5, s and of this section shall
either vertical or horizontal. It
,nSs be obtained by cross walls, piers
% buttresses, when the limiting dist
J ~ / is measured horizontally, or by n
not and roofs when the limiting dist
1ie is measured vertically Sufilcietn b
ing or anchorage shall be provided
ne tween the walls and the support
~ ~ . resist the assumed wind force, az
y either inward or outward. Pier
ail1 buttresses relied unon for lateral
liSss port shall have sufficient strength
lon9 stability to transfer the wind f
WaH acting IN either direction to
lael ground. When walls are depen
loile upon floors or roofs Tor their la
lace support. provision shall be mad
now f,r..s ~ a. esro,,r,d
laid 80 ~ .e
cor SeStlon q, neinlotceo SohSl ~. 80
lbers ea) average concrete LOT Eelslis
ding concrete shall consist Of 1 part
3 to land cement and not more thu
parts aggregate, by volume meas
its dry, and not more than 7i5 gallOl
water per sack, "a pounds, of Ger
walls The aggregate shall be mixed i
not. approximate ratio of az parts
mas aggregate and 31s parts coarse
Sec gregate.
(b) The National Building
units / l949 Eqltlon, heeomnenqeq py
hol- SHAH os deemed g o.,oe pc the sas gen,