The Port Gibson reveille., 1913-07-17


.lfied copy OF this order be served
upon said contractor H. B. Smith
by the clerk of this Board
c. B. DARDEN. President.
Ordered that the Board do now
adjourn until o:3o O'Clock Tuesday.
c. B. DARDEN, Pres.
TUESDAY
Board met pursuant to adjourn
ment, present same as yesterday.
The following bills were allowed
and warrants Issued therefor, to-
wit:
s H BaRnell, expense procuring certih-
cate U Int Rev License. 90
Levy & Welsch Co, burying L Summers. 90
z S cade. lumber.................... z 20
Town of Port Gibson, cost State vs. John
Henry...................... rs
r H Morehead, half year service Co Aud $50 90
Geo Myers, cost Robt Page VS. state... II 10
Claiborne Hdw Co. sundries. 50
Miss Printing Co, sundries. "a so
pope Drug Co. same.................... II as
H E Davis, lumber. as "a
Town of Port Gibson, road tax inside of
town ............................ 5o9 u
NJ Watson, building new road. rs 90
H B Smith, Dist S, and quar- contract less
charges ,..........."..s.......... 3oS %
Tim Holder. cutting tree from road...... Sc
w Segrest, same..................... 50
D ] Taylor, Dist 2, and guar CONTRACT. IS oe
d J Taylor, Dist 8, same........-........ IS &c
Geo Taylor, Dist 4, sar1e...-s"......". 81 SC
H M Trevillion, sarne........s.....s.".. So
] r Stevens, same...................... IS oC
Guthrie, Dist 4, rst and and guar
Ordered that the bid of the Mem
phis Bridge Company for repairs tc
Grindstone Ford Bridge for the
sum of $37o5 be and the same Is
hereby accepted, and that said
Memphis Bridge Co. enter into
contract and file bond for the per
formance of Its contract as pei
plans and specification now or
file.
SPECIFICATIONS OF GRIND
STONE FORD BRIDGE
Description-Steel joists and raj
on old span and trestle and Ioc
feet new steel trestle.
General Description-The bridg'
shall be of the heights and lengths
as shown on the accompanying
plans.
Strain Sheets-The accompany
ling strain sheets show the strain
on the main members, the uni
strains and the sizes sof materia
proposed to be used, they shall b
subject to correction for any cleri
cal error found therein, and thl
contractor may change the size o
any member, provided 1t has equiv
alent area and strength.
Loads-The trusses and foo
system shall be proportioned t
carry the moving and dead load
specified In the strain sheets. Tn
bottom lateral bracing shall b
proportioned to resist a latera
force of $50 pounds per lineal foo
of span one half of which shall b.
considered as moving load. Th,
top lateral bracing to be proper
toned to resist force of I3o lbs
per lineal foot.
Expansion-Provision must b
made for free expansion and con
traction corresponding to a change
of Iso degrees Fahrenheit, In tenn
perature.
Details-The details and connec
tIons of the several parts of the su
perstructure shall be proportioneG
to develop the full strength and
capacity of the members. Abuttins
joints to pin connecting spans are
to be placed or dressed, SO as tC
form a perfect bearing. Riveted
joints fully spllced need not be
planed. Compression members
shall be so built, that their parts,
except surfaces In contrast, shall
be accessible for inspection and
painting.
Pins-PIns must be proportloned
for maximum shearing strain OF
10, 600 lbs. per square inch; for a
maximum bearing strain of 20. .ooc
lbs, and for maximum bending
strain or extreme fibre of 20, 600
lbs. per square inch. They shall
ne turned straight and smooth and
shall fit pin holes within r-32 of an
inch. Wherever necessary for the
protection of the threads. pilot
ni,ts shall be nsed In erection.