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Panel 3 .pdf


Original filename: Panel 3.pdf
Title: Structural Design Template (version 1).xlsb
Author: Edidiong Edet

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BS8110 REF

CALCULATIONS

OUTPUT

SLAB PANEL P3

5225 mm
6225 mm

TWO-WAY SPANNING SLAB





Longer span of slab
Shorter span of slab
Thickness of slab





Characteristic strength of concrete
Characteristic strength of steel
Density of concrete
Diamater of steel proposed

Table 3.3
Table 3.4



3.3 DURABILITY AND FIRE RESISTANCE
Nominal cover for mild conditions of exposure = 20mm
Max fire resistance of 150mm slab with 20mm
LOADING ON SLAB

2
410 N/mm
3
2400 kg/m
12 mm

cover = 1½hr > 1hr



Self weight of slab

Partitions [minimum]

Characteristic imposed load




Design load [1.4gk +1.6qk]



Characteristic dead load



cover
Fire resistance OK

20 mm

3.6 KN/m2




Finishes

3.2.1.2.2

6.23 m
5.23 m
150 mm
2
25 N/mm

1.2 KN/m2
1 KN/m2
5.8 KN/m2

gk

3 KN/m2

qk

12.92 KN/m2



2
5.8 KN/m




n

2
3 KN/m

2
12.92 KN/m

DESIGN MOMENTS AND REINFORCEMENTS
1.191
Aspect ratio of slab











SHORT SPAN [SUPPORT]
Table 3.14
Table 3.14

Support moment coefficient
Support moment
Effective depth of beam ,

3.4.4.4
3.4.4.4
3.4.4.4

K



[d]
M
bd2 fcu

Lever arm, z,

As

Area of steel required,

0.0508
0.94 d
116.55 mm

M
0.95 f y z

430 mm2

Provide

Y12 at



195 mm2

Minimum reinforcement area
BS8110 REF

0.055
19.540 KNm
124 mm

CALCULATIONS

200
2
566 mm

OUTPUT

SHORT SPAN [MIDSPAN]
Table 3.14
Table 3.14

Midspan moment coefficient
Support moment
Effective depth of beam ,

3.4.4.4

K
3.4.4.4
3.4.4.4



[d]

M
bd2 fcu

Lever arm, z,
Area of steel required,

As


























0.041
14.632 KNm
124 mm
0.0381
0.95 d
117.80 mm

M
0.95 f y z

319 mm2

Provide

Y 12 at 250

2
453 mm



BS8110
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OUTPUT
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LONG SPAN [SUPPORT]
Table 3.14
Table 3.14

Support moment coefficient
Support moment
Effective depth of beam ,

3.4.4.4

K
3.4.4.4
3.4.4.4



Lever arm, z,

[d]

M
bd2 fcu

Area of steel required,

As








0.037
13.051 KNm
112 mm



0.0416
0.95 d
106.40 mm

M
0.95 f y z



315 mm2

Provide

Y12 at

Provide

Y12

250
2
453 mm

LONG SPAN [MIDSPAN]
Table 3.14
Table 3.14

Midspan moment coefficient
Support moment
Effective depth of beam ,

3.4.4.4

K
3.4.4.4
3.4.4.4

Lever arm, z,



[d]

M
bd2 fcu

Area of steel required,

As









0.028
9.876 KNm
112 mm
0.0315
0.95 d
106.40 mm

M
0.95 f y z



238 mm2

at 300
2
377 mm

DEFLECTION CHECK
Table 3.9

Basic minimum effective depth for short
span
Moment redistribution factor






Tension reinforcement area provided
Tension reinforcement area required
Design service stress

201.0 mm
1.0




fs


Table 3.10

Modification factor

3.12.11.2.7

Modified minimum effective depth
CRACKING
Cracking is controlled by limiting bar spacing.
Maximum spacing allowed for reinforcement





453 mm2
319 mm2
2 f y Asreq
3Asprov

*

1

b

192.6019265 N/mm2

0.55 

(477  fs )
 2.0
M
)
bd2

120(0.9 

1.83

109.8180434
mm


372 mm



124 mm

OK

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