intr prof d cha pter 1: introduction to two-w ay sla b systems
TRANSCRIPT
1 Intr
Cha
Typ
A reisurfastruct
Geneplates
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In thibeam
2
oduction TW
apter 1:
pes of Sla
nforced conces parallel. tural steel m
eral slab systs, two-way s
. One-waA slab supslab panel
is type, loads
m (in the shor
. Two waThe ratio It may be
Slabs
: Introdu
abs
crete slab is It may be su
members, dire
tems that maslabs, and wa
ay slab: pported on twl is > 2 (fig.
s are carriedrt direction).
ay slab: of length to with beams
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uction t
a broad, flatupported by ectly by colu
ay be designeaffle slabs. S
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d by the slab
width of on on all four s
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to Two-W
t plate, usualRC beams,
umns, or con
ed accordingSlabs-on-gro
ly (fig. a), or
in one direc
ne slab panel sides (fig. b)
m
Way Sla
lly horizontaby masonry
ntinuously by
g to this couround are exc
r if the ratio
ction perpend
is < 2 ),
ab Syste
al, with top ay or RC wallsy the ground
rse include fcluded.
of length to
dicular to the
ems
and bottom s, by d.
flat slabs, fla
o width of on
e supporting
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1 Intr
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3D f
oduction TW
Or beamleFlat plateFlat slab, due to sheWaffle (gin a rectil
figures of t
Slabs
ess: , (fig. d), spa(fig. e), inco
ear and negagrid) slab, (fiinear pattern
two-way s
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slabs:
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duce stresses
ds are formection.
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1 Intr
Beha
Fig.(awith
It is s
The a
Fig.(b
The omom
The m
The m
oduction TW
avior of T
a); two centuniform load
seen that the
actual behav
b); grid mod
outer strips sments are less
max moment
moments var
Slabs
TW slabs
ter strips of ad q (kN/m2).
larger share
vior is more c
del of the sla
s2 and l2 are ns due to the s
ts occur at th
ry across sho
Prof D
a rectangular. Their defle
e of the load
complex;
ab.
not only benshare of torsi
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ort and long
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r slab with shections at the
is carried in
nt but also twional momen
curvature. M
directions, a
m
hort span la
e intersection
n the short di
wisted. It ments.
M along s1 > M
as shown bel
and long span point are th
irection.
eans that ben
M along s2
low for a SS
an lb, loadedhe same:
nding
S slab;
3
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1 Intr
Specbeamdiago
Speci
oduction TW
ial reinforcem-supported tonal, and at t
ial As = max
Slabs
ement againtwo-way slabthe top ┴ dia
x positive As
Prof D
nst twisting b system; whgonal, as fol
in the panel
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moments ishere they tenllows;
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m
s required atnd to crack t
t exterior corthe slab at th
rners of a he bottom //
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1 Introduction TW Slabs Prof Dr Bayan Salimm
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1 Intr
Flat
Flat
oduction TW
Slab floor
Slab floor
Slabs
r system
r system (w
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with colum
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mn capital
m
ls)
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1 Intr
oduction TW Slabs Prof Dr Bayan Salimm
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