The following diagram shows a partial floor framing plan of an elevated walkway building connecting an airport terminal building to the adjacent garage. The concrete floor is not post- tensioned. Material properties are: - Concrete weight: wt = 150 pcf - Concrete compressive strength: f'c = 4000 psi - Steel tensile strength: fy = 60 ksi - Stirrup consists of #4 bar - Framing members are not exposed to weather or in contact with soil. Per the ACI, what is the minimum slab depth? Consider both the interior slab and the cantilevered slab at the edge of the building. 30-0¹ B4 B4 B4 83 Column 52 SI 30-0 -Sab Mark Dean- B4 B4 B4 83 B 30-0¹ BI B2 B2 BI -Girder 12 A 1 3-4 Ei 13:4 05 40-0 to 2

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Chapter9: Composite Construction
Section: Chapter Questions
Problem 9.3.1P
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The following diagram shows a partial floor
framing plan of an elevated walkway building
connecting an airport terminal building to the
adjacent garage. The concrete floor is not post-
tensioned.
Material properties are:
- Concrete weight: wt = 150 pcf
- Concrete compressive strength: f'c = 4000 psi
- Steel tensile strength: fy = 60 ksi
- Stirrup consists of #4 bar
- Framing members are not exposed to weather
or in contact with soil.
Per the ACI, what is the minimum slab depth? Consider both the interior slab and the
cantilevered slab at the edge of the building.
30-0¹
B4
B4
B4
83
Column
52
SI
30-0
-Sab Mark
Dean-
B4
B4
B4
83
B
30-0¹
BI
B2
B2
BI
-Girder
12
A
1
3-4
Ei
13:4
05
40-0
to
2
Transcribed Image Text:The following diagram shows a partial floor framing plan of an elevated walkway building connecting an airport terminal building to the adjacent garage. The concrete floor is not post- tensioned. Material properties are: - Concrete weight: wt = 150 pcf - Concrete compressive strength: f'c = 4000 psi - Steel tensile strength: fy = 60 ksi - Stirrup consists of #4 bar - Framing members are not exposed to weather or in contact with soil. Per the ACI, what is the minimum slab depth? Consider both the interior slab and the cantilevered slab at the edge of the building. 30-0¹ B4 B4 B4 83 Column 52 SI 30-0 -Sab Mark Dean- B4 B4 B4 83 B 30-0¹ BI B2 B2 BI -Girder 12 A 1 3-4 Ei 13:4 05 40-0 to 2
TABLE 9.5(a) - MINIMUM THICKNESS OF
NONPRESTRESSED BEAMS OR ONE-WAY SLABS
UNLESS DEFLECTIONS ARE CALCULATED
Member
Solid one-
way slabs
Beams or
ribbed one-
way slabs
Simply
supported
One end
Both ends
continuous continuous Cantilever
Members not supporting or attached to partitions or other
construction likely to be damaged by large deflections
€/20
€/24
1/28
€/10
€/16
Minimum thickness, h
6 inches
6.5 inches
7 inches
7.5 inches
U/18.5
/21
€18
Notes:
Values given shall be used directly for members with normalweight concrete
and Grade 60 reinforcement. For other conditions, the values shall be modified
as follows:
a) For lightweight concrete having equilibrium density, we in the range of 90
to 115 lb/ft, the values shall be multiplied by (1.65 -0.005we) but not less
than 1.09.
b) For f, other than 60,000 psi, the values shall be multiplied by (0.4+ f/100,000).
Transcribed Image Text:TABLE 9.5(a) - MINIMUM THICKNESS OF NONPRESTRESSED BEAMS OR ONE-WAY SLABS UNLESS DEFLECTIONS ARE CALCULATED Member Solid one- way slabs Beams or ribbed one- way slabs Simply supported One end Both ends continuous continuous Cantilever Members not supporting or attached to partitions or other construction likely to be damaged by large deflections €/20 €/24 1/28 €/10 €/16 Minimum thickness, h 6 inches 6.5 inches 7 inches 7.5 inches U/18.5 /21 €18 Notes: Values given shall be used directly for members with normalweight concrete and Grade 60 reinforcement. For other conditions, the values shall be modified as follows: a) For lightweight concrete having equilibrium density, we in the range of 90 to 115 lb/ft, the values shall be multiplied by (1.65 -0.005we) but not less than 1.09. b) For f, other than 60,000 psi, the values shall be multiplied by (0.4+ f/100,000).
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