The daily monitor leader. [volume] (Mount Clemens, Mich.) 1942-19??, 1942-06-10

on top OF besm III spacing OF suPpOIS
does not exceed g..
Beams may be built up of floor joist
nailed together with l6D nails not more
than 10" apart and continuous over two
spaces with all joints over supports. III
the joiSts are TO be attached at the
sides the depth on the beam must be
increased to accommodate an angle or z
by 4" ledger strip nailed with at least
- I6D nails for each Joint carried.
Floor beams shall not be notched or
cut Holes shall be bored and no hole
shall be a greater diameter than u the
depth of the beam.
SECTION is. Floor Joists and Framing
Max. Span
Floor ioist in wooden buildings used
for dwellings shall be of good timber
set Is" on centers shall be al least the
following sizes or equal.
Spans not more than feet-2"x6"
Spans not more than ~ 3"-2'N8"
spans not more than Is feet-2"Xl0"
Spans not more than 20 feet-2"xl2"
Joist I2" on center
Spans not more than l0'-2"x6V
Spans not more than 1s-2"N8"
Spans not more than l7'-2"Xl0n
Spans not more than 30 3"-2"Nl2"
All spans over IS s. must be inquired
| separately.
All spans over 8 feet ust be pridgcd.
All joits under bearing partitions
must be doubled and under inside
! walls must be double.
SECTIONS 10. Ceiling Joist
| Max. Spans.
| Ceiling joist in wooden buildings is"
/ on center shall be at least the follow
/ ing sizes.
! Spans not more than l0-2"x4"
! spans not more than IS 3"-2"N6"
! Spans not more than 2O'-2"xB"
| Criiinr joist ~" center.
Spans not more than ll-2"x4"
Snans not more than l7-"Nb'
Spans not more than 2O'-2"XS"
/ All ceiling joist for two story build
| ings shall be considered as floor joist
for the second floor and be floor joist
sizes or equal.
SECTION II. Maximum Span for
Kaftors.
The allowable span OF roof rafters
/ shall be measured horizontally from
the plate 10 point directly under the
ridge. No spacing shall be over "a on
| center. Actual rafter length VIII be de-
termined by the slope of the roof.
Rafters on wooden buildings l6' on
center shall be at least the following
sizes.
spans OF not more than g. 0"-2"x4"
Spans of not more than l3 b'-2"Nb"
! Spans OF not more than Is. 7'-2"X8"
Spans of not more than 10 S-2" XIV"
Rsfters "a" on center shall be al least
| the following sizes.
| Spans OF not more than n 90" N4'
Spans of not more than To- 3-2"No"
Spans of not more than IL g. -2"N8"
The above tables are based on yellow
pine or douglas fir lumber.
| Softer woods shall have correspond
ing shorter span in each case.
All roofs must have ridge boards and
collar ties at least every third Tatter.
! SECTION Is. walls
| Wall studs must not be less than
| 2"x4" or more than Is" on centerS,
and shall be tripled at corners or
| equal
| All studdins around openings such as
/ doors and windows must be doubled
| down TO the floor.
Lintels or headers are to be doubled
/ and set on edge for all openings. Spans
for lintels and headers shall not ex-
| coed the following:
! Double 2"x4" up to 4 opening.
Double 2"xs~ up to s. s" opening.
| Double 2"xs7 up TO T. opening.
Double 2"xl0~ over 7 o" opening.
When insulating sheathing or SINH
lar material is used as sheathing corner
studs must be braced diagonslly from
top plate TO bottom plate.
All upper plates must be doubled and
tied in at the corners.
The exterior walls OF all frame resi-
dences shall be double construction and
she uing paper used between siding
and sheathing.
SECTION 10 Roofs
Dwellings shall have Sloping roof
covered with asphalt or wood shingles
or slate surfaced roll roofing
Flat roofs on buildings shall be built
/ UP roofing or metal covered.
Main roof of dwelling shall have
minimum pitch OF S" in IL.
Every building more than two stories
| I'm height having flat roof shall have
permanent means Of access 10 the roof
from the inside by opening not
/ l~se 0'x1' with ~ a fixeH lad
der inside.
lain roof of q dwelling may in some
! cases be flat within keeping of the de-
sign of the entire building to give
pleasing and satisfactory appearance.
SECTION 20. Fire stops.
In all dwellings or other structures
for human use fire stops shall be in
serted between all studdins in all out
side walls and partitions the full width
Of the studding between which they ara
placed.
Spacing between stops to be not
more than six feet in any vail.
SECTION 81. stairs.
A clear hesdroom, defined az meas
ured vertically from line passing
through the nosing of each tread at the
intersection of the riser TO line par
sIlel to and directly above the first
Iinel of g. 8" is required. Head room of
g. g. will be accepted under the fol-
/ lowing conditions only; UD at basement
stairs: and ~ at attic stairs, beneath
7 0" high door when the door is
! placed above and flush with the lower
most stair riser or when the lower most
riser is placed not less than inches in
side the face of the wall in which a
Z o" high door occurs.
Main stairs interpret az any stair
/ which may be subject 10 regular rath-
! than intermittent use, such q stairs
| providing access to finished upper
u a
major rooms, and stairs which
wholly partly exposed. Stairs lead
ing directly off a front vestibule 10 q
large unfinished attic, obviously intend
cd for future conversion into seps-
rate living unit will be considered a
main stair.
Main stairs shall be l/s tresds
'. risers. "a stringers housed for treads
and riSers. strongly assembled. Width
OF tread shall not be less than l0l."
and riser shall be not more than 8"
with the tread and riser so proportion
ed 10 each other than an easy run is
obtained. Minimum width 8 o..
Basement Stairs: NAV be open type
with plank stringers and treads not less
than 2"xl0" stock. Minimum distance
from face OF riser to face OF riser ga.
Maximum rise not more than 8" per
tread
Minimum width 2 g."
SECTION 22. Public Building and As
sembly Halls.
All public buildings and assembly
balls such as churches, schools, theatres,
dance halls and club rooms shall be
properly dcigned by registered Arch
itcct and due regard shall be given 10
sanitation, ventilation, fire protection
and public safety. No temporary per
NIT shall be issued for this type of
structure all such buildings shall be en-
tirely completed shown on plans and
specifications submitted at the time the
permit was granted before they can be
used or occupied by the owner or pub
lie.
Assembly halls which are on the first
floor or in basement shall have exits en-
ter directly to grade and such exits
shall be separate from others.
All exit doors shall swing out and