Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 20, Problem 9P
To determine
The tensile stress for the load located at interior of slab.
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Q2/Using the ACI Code equations, determine the minimum slab thickness required for Panel (A
and Panel (B) of the floor system shown in Figure (2). Use fy-470MPA.
200mm
350mm
e 250mm
400mm dia.
Exterior beam
250x250mm
200mm
2500 x 1000mm
350mm
Panel (A)
Panel (B)
50mm
Interior beam
78 m
7.8m
78 m
78m
Figure (2)
7.5 m-
SCC and Plain Concrete
What is the purpose of the J ring test
4.7 The cross section of a conventionally reinforced concrete one-way slab is shown below. Using ACI Table 9.5(a), answer
the following questions:
5'-0"
CANTILEVER
TI
23-0
END-BAY
T2
SPAN L3
INTERIOR-BAY
a. What is the minimum slab thickness at end bays (T2)?
Member
Solid one-
way slabs
BM WIDTH
Beams or
ribbed one-
way slabs
TABLE 9.5(a)- - MINIMUM THICKNESS OF
NONPRESTRESSED BEAMS OR ONE-WAY SLABS
UNLESS DEFLECTIONS ARE CALCULATED
Simply
supported
23-0
END-BAY
12
€/16
CANTILEVER
Minimum thickness, h
Both ends
One end
continuous continuous Cantilever
Members not supporting or attached to partitions or other
construction likely to be damaged by large deflections
1/20
024
U/28
U/10
d/18.5
(21
€/8
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 dersity, we, in the range of 90
to 115 loft, the values shall be multiplied…
Chapter 20 Solutions
Traffic and Highway Engineering
Ch. 20 - Portland cement concrete consists of what four...Ch. 20 - List and briefly describe the five main types of...Ch. 20 - What is the main requirement for the water used in...Ch. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Repeat Problem 20-12, with the slab containing...Ch. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - An existing rural 4-lane highway is to be replaced...Ch. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27P
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- Repeat Problem 20-12, with the slab containing temperature steel in the form of welded wire mesh consisting of 0.125 in.2 steel/ft width. The modulus of steel, Es, is 30106lb/in.2 , Ec=5106lb/in.2 , and h=6inches .arrow_forwardQuick.arrow_forwardDesign a one-way slab for the inside of a parkily garage. slab thickness 6" f= 4000 psi Gracke bo steel WLL= 180 pst %3D WoL=30 psf Not including the slab self-weignt. NWC.arrow_forward
- . Design the thickness at the edge and at the center of rigid pavement of the proposed ABCD Road to carry a wheel load of 7500 kg. Allowable tensile stress of concrete is 0.065f'. Assume f'c = 20 MPa.arrow_forwardUrgent...arrow_forwardA slab with S/L = 0.40 has a thickness of 150 mm reinforced with 12 mm - diameterdeformed bars at spacing s = 200 mm on center. Assume f'c = 28 MPa and fy = 415MPa. Use clear cover of 20 mm. What is the governing steel ratio?arrow_forward
- Problem. A 130 thick one way RC slab is subjected to loads (wt. of slab is not included) as shown. Solve & Draw V & M diagram. Use: fy= 415 MPa; fc'=25 MPa; cc=27 mm. LL-2.3 KPa/DL = 5.5KPa 5.70m 25mm REBARS @ 230 mm O.C. 2m 24mm REBARS @ 130 mm O.C.arrow_forwardYou are required to design the reinforcement (both main and distribtion) for the one-way slab shown below. You then have to produce sketches (plan and section) showing your reinforcement placement. You are required also to carry out serviceability limit checks (deflection and cracking). DESIGN INFORMATION: f = 460N/mm. Diameter main bars = 10 mm. feu = 30 N/mm. Fire resistance 2 Hrs. Exposure conditions: Mild.arrow_forwardFLEXURAL ANALYSIS CONCRETE UNCRACKED Problem: Determine the cracking moment for the section shown below if = 4000 psi and the modulus of rupture f, = 7.5/f'. 22" 30" 3 #9• 4" te 12–arrow_forward
- Q.20 The main reinforcement in RC slab consists of 10 mm diameter bars at 100 mm c/c spacing. When 10 mm bars are replaced by 12 mm diameter bars then spacing would bearrow_forward4.6 A one-way slab is used typically in which of the following types of buildings? a. Museum b. Parking c. Library d. Warehouse 4.7 The cross section of a conventionally reinforced concrete one-way slab is shown below. Using ACI Table 9.5(a), answer the following questions: 5'-0" CANTILEVER 23-0 END-BAY SPAN L3 INTERIOR-BAY a. What is the minimum slab thickness at end bays (T2)? BM WIDTH 20 (191) Solid one- way slabs TABLE 9.5(a) - MINIMUM THICKNESS OF NONPRESTRESSED BEAMS OR ONE-WAY SLABS UNLESS DEFLECTIONS ARE CALCULATED Beams or ribbed one- way slabs 23-0 END-BAY Minimum thickness, h Simply One end Both ends supported continuous continuous Cantilever Members not supporting or attached to partitions or other Member construction likely to be damaged by large deflections U/20 (24 1/28 /10 (21 1/16 CANTILEVER 0/18.5 (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…arrow_forwardFill the table.arrow_forward
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