SLAB DESIGN AND ANALYSIS:

BLDG. LEVEL 2F
SLAB NO: SLAB 1A

Inputs:
f'c = 20.7 MPa
fy = 276 MPa
LENGTH = 3.16 m
WIDTH = 1.9 m
Slab CASE #1-9 = 4
m = 0.6013
Design Two-way Slab!
wll (LIVELOAD) = 1.92 KPa
additional wdl = 0 KPa
Thickness = 90 mm
Use Thickness (SAY) = 120 mm
wdl of slab = 2.83 KPa
wu slab = 7.23 kPa
chb wall height along
0 m
short =
chb wall height along
0 m
long =
wall load along short = 0 KN/m
wall load along long = 0 KN/m
wudl along short = 7.226 KPa
wudl along long = 7.226 KPa
ALONG SHORT SPAN
Short Span Cont. Short Span Mid. Short Span Dis.
As = 99.75 66.5 22.17
Use bar dia. (mm) 12 12 12
Nom. Spacing = 1133 1700 900
ACI (max) = 360 360 360
Required (min) = 360 360 360
SAY 300 300 300
Adequacy OKAY! OKAY! OKAY!
ALONG LONG SPAN
Long Span Cont. Long Span Mid. Long Span Dis.
As (mm^2)= 113.92 26.7 8.9
Use bar dia. (mm) = 12 12 12
Nom. Spacing = 992 4235 900
ACI (max) = 360 360 360
Required (min) = 360 360 360
SAY 300 300 300
Adequacy OKAY! OKAY! OKAY!
TEMPERATURE BARS (ACI) Bottom Temp. bars
Along Short COLUMN STRIP
As (mm^2) = 240
300 SPACING IS 3/2
Use bar dia. (mm) = Along Long THE SPACING OF
12
MAIN TOP BARS'
Spacing .002bt (mm) = 471.24 300 SPACING ON EDGES
ACI (max) = 450 Bottom Temp. bars OR BUT LESS THAN
Spacing min. (mm) = 450 spacing is Twice or OR EQUAL ACI MIN.
Equal the midspan but (3t<450mm)
SAY 300 less than the ACI
Adequacy OKAY! minimum (5t)
 MOMENTS
Support Continuous (Negative Moments) (-)
Moment Short Span = 2.319 KN-m
Moment Long Span = 2.489 KN-m
Midspan (Positive Moments) (+)
Moment Short Span = 1.545 KN-m
Moment Long Span = 0.577 KN-m
Support Discontinuous (Negative Moments) (-)
Moment Short Span = 0.515 KN-m
Moment Long Span = 0.19 KN-m
STEEL RATIOS
Css Cls Mss Mls
w = 0.01391 0.01704 0.00924 0.00392
p = 0.00105 0.00128 0.0007 0.0003
pmin = 0.00508 0.00508 0.00508 0.00508
USE p = 0.00105 0.00128 0.0007 0.0003
 S L A B D E T A I L:
TOP BARS
discontinuous
Ø12 @300mm Ø12 @300mm Ø12 @300mm Ø12 @300mm
///////////continuous///////////

Ø12 @300mm
Ø12 @300mm

discontinuous
Ø12 @300mm
Ø12 @300mm

Ø12 @300mm
Ø12 @300mm

Ø12 @300mm Ø12 @300mm

Ø12 @300 mm Ø12 @300 mm Ø12 @300 mm Ø12 @300 mm

///////////////////////continuous/////////////////////////

SLAB THICKNESS = 120 MM

LENGTH (L) = 3160 MM
WIDTH (W) = 1900 MM
BOTTOM BARS

W/4
Ø12 @300 mm

W/2

Ø12 @300 mm
W/4

Ø12 @300 mm Ø12 @300 mm

L/4 L/2 L/4

PROGRAM PREPARED BY:ENGR. MARK KENNETH ONTEJO,RCE
CHECKED BY: ENGR. ROBETA JEAN Y. ABOGA-A,RCE
SLAB 1A (2F)