Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
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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According to ACI code min allowed diameter of circular column is
450mm
450cm
300cm
300mm
* In design of slab shear if Vu more than ØVc then
increase slab thickness
use strirrups
decrease slab thickness
use additional longitudinal reinforcement
SCC and Plain Concrete
What is the purpose of the J ring test
Design
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.
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_forwardQ2/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-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_forward
- 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…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_forward3. Per the following, are the breaks acceptable if the concrete is 4000 psi? ints 4110 Set 1 4050 4150 Set 2 4200 3810 Set 3 3750arrow_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_forward3. Per the following, are the breaks acceptable if the concrete is 4000 psi? 4110 Set 1 4050 4150 Set 2 4200 3810 Set 3 3750arrow_forwardQ3c The basic concept of reinforced concrete column is to include a designed amount of steel bars in a predetermined pattern to give the concrete a reasonable amount of tensile strength. Describe the behavior of short column and long column under failing load.arrow_forward
- You 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_forwardSlab system consist of one-way slab panels shown in Fig. (1), subjected to the superimposed dead load 2.8kN/m² (excluding self-weight) and live load as listed below assume normal concrete. The slab supported by beams with bw=300 mm and h=650 mm and the beam supported by columns with dimensions (300 x 300 mm). f'c =28 MPa, and fy= 420 MPa 1- Design slab S1 and S2. (use $12 mm) 2- Design Beam (B2) for bending, where the beam carries a brick wall 3 m height and 250 mm width (y brick = 16 kN/m³) Note: consider live load as: 1=1 1- Live Load = 0.22 x (n) +6 Where: (n) is Student number 2- Consider the Design moments for beam B2 as: At support=-M = and at Mid span +M= Wul² 12 W₂1² 24 7.3 m 3.3m S1 (use $25 mm) B2 3.3 m S2 B2 Fig (1). 3.3 m S1 81arrow_forward
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