73 of 1916 - Amending Chapter 8, providing for the use of hollow terra cotta building blocks ROLL CALL
VOTING AYE NAY Salt Lake City, Utah, _August__2r____191_.6
Green VI
I move that the ordinance be passed.
Scheid
Shearman
Wells
Mr.Chairman
Result AN ORDINANCE
.n ordinance amending Chapter 8 of the Revised Ordinances of
Salt Lake City, of 1913, relating to buildings, by adding after
Seotion 281 a new section to be known as Seotion 281x, providing for
the use of hollow building blocks of hard burned terra Gotta.
Be it ordained by the Board of Commissioners of Salt Lake
City, 'Utah:
SECTION 1. That Chapter 8 of the Revised Ordinances of Salt
Lake City of 1913, relating to buildings, be, and the same is hereby
amended by adding after Seotion 281 a new section to be known as
Section 281x, relating to hollow building blocks of hard burned terra
ootta, said section to read as follows:
SECTION 281x. Hollow building blocks of hard burned terra
Gotta may be used for all walls of buildings not exceeding three
stories or 40 feet in height, provided that such blocks have
met the test requirements set forth below, and are not stressed
beyond the safe limits therein prescribed. The minimum thick-
ness of such walls shall be as required for brick walls.
Hollow terra ootta blocks in exterior walls shall be either
extra hard burned or be veneered with brick, architectural
terra Gotta or stone, securely bonded and set, or the blocks
shall be covered on the exposed surface with at least three
quarters of an inch of Pertland Dement stucco; such blocks
shall be well scored, grooved or roughened to retain the
-1-
coating. The stucco shall not be considered as a part of the
required thickness of the wall.
Specifications and test requirements for blocks shall be
as follows:
Terra ootta blocks for walls shall be dense, or hard
burned, or vitreous.
The compressive strength of building blocks shall in all
oases be calculated upon the gross sectional area of the bedding
faces including the cellular spaces.
All blocks submitted to test shall be bedded in plaster of
Paris or cement, to secure an even bearing.
The average ultimate compressive strength for terra ootta
blocks designs• to be normally laid with the cells vertical, and
which are tested with the cells in that position, shall be net
less than 1200 pounds per square inch. The allowable working
stress on such blocks shall not erased. 120 pounds per square
inch.
The average compressive strength of terra ootta blocks
which are designed to be normally laid with the cells vertical,
but are tested with the cells horizontal, shall sat be not less
than 300 pounds per square inch, and no block of the set shall
test less than 200 pounds per square inch. The allowable
workingstress on such blocks when laid with the cells horizontal,
l.
shall not exceed 30 pounds per square inch.
The average ultimate compressive strength for terra ootta
blocks designed to be normally laid with the cells horizontal,
and which are tested with the cells in that position, shall be
not less than 800 pounds per square inch. The allowable working
stress on such blocks shall not exceed 80 pounds per square inch.
Allowable working stress for terra cotta blocks which may
jl
not be designed for use with oells laid either horizontal or
vertical, may be determined by dividing the average gitimate
jl
compressive strength as determined by tests by a factor of
safety of ten.
The absorption of building blocks used for bearing or panel
walls, determined by taking the average test of three blocks,
shall not exoeed ten per cent in forty-eight hours, and shall
not exceed fifteen per cent in any oase.
SECTION 2. This ordinance shall take effect upon its first
publication.
•
7-3;1 .//'
Passed by the Board of Commissioners of Salt Lake City, Utah,
August 2nd , 1916.
Mayor .'"
ecorder.
.3.
lo lololt at,:avd beilfmTeita ez evnax14,1op
-aal4 TO WillO TO.1: 'To if :td. -Tosdrt 9:f.T
noLS eslAt Eo tae3 9:53TOrO IHtih t .zd bw:LtmleIsh
5A3 telzori i i TO' L11 tueo 1D blsoxe *on Illje
.0I10 r 5ostroa
•
31jyo ai . iIi
JU"
ai >
. Z °
1
cs' 13 lz)
,1.9.
1 CM 0
-c4-;
bi in g
1:4* , 1 0
*Tit 10 2,1IiTfilli,IIMMOO TO.
5 .al--
[