This document provides steps for modeling, analyzing, and designing an 8-storey reinforced concrete residential building using ETABS software. It details creating the grid system, defining materials and sections, assigning loads, performing analysis, and designing and detailing beams, columns, slabs, stairs, footings, and reinforcement. The document includes summaries of column, slab, and footing reinforcement details.

1. 8 Storeyed Reinforced
Concrete Residential
Building
(Etabs)
Toe Myint Naing
Curtin Sarawak
Intern
KSI ENGINEERING

2. Steps
• Modeling
• Grid system
• Define
• Material
• Frame
• Slab/stair
• Static Load Cases
• Load combination
• Draw & Assign Loads
• Analysis
• Design

3. Modeling – Grid System
• Ctrl+N

4. Grid System
For Plan Grid Dimensions

5. Grid System
For Plan Grid Dimensions

6. Grid System
For Story Dimensions

7. Grid System
For Story Dimensions

8. For Landing slabs
Grid System - Adding Ref planes

9. Modeling - Define
For Material Properties

10. Modeling - Define
For Material Properties
For Concrete, f’c = 2.5 ksi
For Main Steel, fy = 40ksi
For Stirrup and Tie, fy = 40ksi
Modulus of Elasticity of concrete,
Ec = 2850 for f’c = 2.5ksi
Ec = 57000 𝑓′ 𝑐 ÷ 1000 ksi
Poisson’s Ration = 0.2 for concrete

11. Modeling - Define
For Frame Sections

12. Modeling - Define
For Frame Sections - Beam
B 10x10
B 10x12
B 15x21
Cover + Stirrup + Rebar
1.5 + 0.5 +
1
2
=2.5

13. Modeling - Define
For Frame Sections - Column
C 12x12
C 14x14
C 16x16
C 18x18

14. Modeling - Define
For Slab Sections

15. Modeling - Define
For Slab Sections
S1
S2
Stair
LS
Membrane
- No moment contribution
- Conservative value of
beam moment and similar
to hand calculation
- Can assign for one-way
slab
&

16. Modeling - Define
For Static Load Cases Names

17. Modeling - Define
For Static Load Cases Names

18. Modeling - Define
For Load Combinations

19. Modeling - Define
For Load Combinations
F1 1.4D
F2* 1.2D+1.6L+0.5R
F3 1.2D+1.6R +L
S1 D
S2 D+0.75L+0.75R
S3 D+R
S4* D+L
&

20. Modeling - Draw
For GF
C 18X18
B 15X21
B 10X10

21. Modeling - Draw
For RF
C 12x12
B 10x12
For PARAPET
C 12x12

22. Modeling - Draw
For 1F to 7F
PRP C 12x12
RF C 12x12
7F C 12x12
6F C 12x12
5F C 14x14
4F C 14x14
3F C 16x16
2F C 16x16
1F C 18x18
GF C 18x18
*One Story
B 10x10
B 10x12
*Similar Stories

23. Modeling – Assign Loads
For RF
Roof live load – 20psf
Rain load – 20psf
Finish load – 20psf

24. Modeling – Assign Loads
For 1F to 7F
Typical Floor live load – 40psf
Finish load – 20psf

25. Modeling – Assign Loads
For GF’s LS to 6F’s LS
Landing Slab live load – 100psf
Finish load – 20psf

26. Modeling – Assign Loads
For 1F’s Stair to 7F’s Stair
Landing Slab live load – 100psf
Finish load – 20psf
Step load – 37.5psf
1
2
× 𝑏 × ℎ × 𝑈. 𝑊 𝑜𝑓 𝑐𝑜𝑛𝑐 =
1
2
×
9
12
×
6
12
× 150 = 28.125 lb/step
9” = 28.125
12”=
12
9
× 28.125 = 37.5 𝑙𝑏/𝑓𝑡

27. Modeling – Assign Loads
For RF Wall
3’ height 4.5” thick wall

28. Modeling – Assign Loads
For RF Wall
3’ height 4.5” thick wall
Masonry Brick = 120 lb/𝑓𝑡2
4.5” Brick =
4.5
12
x120 = 45 ~ 50 lb/ft
3’ height = 3 x 50 = 150

29. Modeling – Assign Loads
3’ height 4.5”thick Wall on Line 1 Span AB
4’ height 4.5” thick Wall on Line 2 Span AB
Others 9’ height 4.5” thick Wall
For Typical Floor Wall– 1F to 7F

30. Modeling – Assign Loads
3’ height 4.5”thick Wall on Line 1 Span AB
3’ height = 3 x 50 = 150
4’ height 4.5” thick Wall on Line 2 Span AB
4’ height = 4 x 50 = 200
Others 9’ height 4.5” thick Wall
9’ height = 9 x 50 = 450
For Typical Floor Wall – 1F to 7F

31. Modeling – Assign Loads
4’ height 4.5” thick Wall
For Landing Wall

32. Modeling – Assign Loads
4’ height 4.5” thick Wall
4’ height = 4 x 50 = 200
For Landing Wall – GF to 6F

33. Modeling – Assign Loads
4’ height 4.5” thick wall on Line 2 Span AB
Others 9’ height 4.5” thick wall
For GF Wall

34. Modeling – Assign Loads
For Landing Wall – GF to 6F
4’ height 4.5” thick Wall on Line 2 Span AB
4’ height = 4 x 50 = 200
Others 9’ height 4.5” thick Wall
9’ height = 9 x 50 = 450

35. Analysis

36. Analysis

37. Analysis

38. Design
Checking Code
Code – MNBC -2016
∅ (Tension Controlled) 0.9 0.8
∅ (Compression Controlled Tied) 0.65 0.62
∅ (Compression Controlled Spiral) 0.7 0.67

39. Design
Design Load Combinations Selection

40. Design
Concrete Frame Design Overwrite

41. Design
Concrete Frame Design Overwrite

42. Design-Beam Detailing
Roof Longitudinal Reinforcing & Torsion Reinforcing
Line C span 1-2

43. Design
Displaying Design Results

44. Design
Roof Longitudinal Steel Detailing

45. Design
Roof Shear Steel Detailing

46. Design-Detailing
Typical Floor Longitudinal Reinforcing & Torsion Reinforcing
Line 1 span C-D

47. Design
Typical Floor Longitudinal and shear Steel Detailing

48. Design-Detailing
Typical Floor Longitudinal Reinforcing & Torsion Reinforcing
Line B span 1-2

49. Design
Typical Floor Longitudinal and shear Steel Detailing

50. Design-Detailing
Roof Longitudinal Reinforcing & Torsion Reinforcing
Line A span 4-5

51. Design
Typical Floor Longitudinal and shear Steel Detailing

52. Design-Detailing
Typical Floor Longitudinal Reinforcing & Torsion Reinforcing
Line 1’ span B-C

53. Design
Typical Floor Longitudinal and shear Steel Detailing

54. Design
Typical Floor Longitudinal and shear Steel Detailing Summry
∗

55. Design-Detailing
Ground Floor Longitudinal, Torsion & Shear Reinforcing
Line 1 span C-D

56. Design
Ground Floor Longitudinal and shear Steel Detailing

57. Design-Detailing
Ground Floor Longitudinal, Torsion & Shear Reinforcing
Line B span 4-5

58. Design
Ground Floor Longitudinal and shear Steel Detailing

59. Design-Column Detailing
Column Steel Detailing for Parapet to 6th floor
As Main bar Tie
Parapet 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
Roof 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
7 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
6 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
𝑆 𝑚𝑎𝑥 = 8𝑑 𝑏 = 8x(
18
25.4
) = 5.67”
𝑆 𝑚𝑎𝑥 = 24𝑑 𝑡 = 24x(
8
25.4
) = 7.6”
𝑆 𝑚𝑎𝑥 =
𝑏
2
or
ℎ
2
=
12
2
= 6”

60. Design-Column Detailing
Column Steel Detailing for 5th floor to 4th floor
As Main bar Tie
5 14x14 1.96 18mm-6 Nos 2 - 8mm-5" c/c
4 14x14 1.96 18mm-6 Nos 2 - 8mm-5" c/c
𝑆 𝑚𝑎𝑥 = 8𝑑 𝑏 = 8x(
18
25.4
) = 5.67”
𝑆 𝑚𝑎𝑥 = 24𝑑 𝑡 = 24x(
8
25.4
) = 7.6”
𝑆 𝑚𝑎𝑥 =
𝑏
2
or
ℎ
2
=
14
2
= 7”

61. Design-Column Detailing
Column Steel Detailing for 3th floor to 2nd floor
As Main bar Tie
3 16x16 2.56 18mm-8 Nos 2 - 8mm-5" c/c
2 16x16 2.56 18mm-8 Nos 2 - 8mm-5" c/c
𝑆 𝑚𝑎𝑥 = 8𝑑 𝑏 = 8x(
18
25.4
) = 5.67”
𝑆 𝑚𝑎𝑥 = 24𝑑 𝑡 = 24x(
8
25.4
) = 7.6”
𝑆 𝑚𝑎𝑥 =
𝑏
2
or
ℎ
2
=
16
2
= 8”

62. Design-Column Detailing
Column Steel Detailing for 1st floor to Ground floor
As Main bar Tie
1 18x18 3.24 18mm-10 Nos 2 - 8mm-5" c/c
GF 18x18 3.24 18mm-10 Nos 2 - 8mm-5" c/c
𝑆 𝑚𝑎𝑥 = 8𝑑 𝑏 = 8x(
18
25.4
) = 5.67”
𝑆 𝑚𝑎𝑥 = 24𝑑 𝑡 = 24x(
8
25.4
) = 7.6”
𝑆 𝑚𝑎𝑥 =
𝑏
2
or
ℎ
2
=
18
2
= 9”

63. Design-Column Detailing
Column Steel Detailing Summary
As Main bar Tie
Parapet 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
Roof 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
7 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
6 12x12 1.44 18mm-4 Nos 2 - 8mm-5" c/c
5 14x14 1.96 18mm-6 Nos 2 - 8mm-5" c/c
4 14x14 1.96 18mm-6 Nos 2 - 8mm-5" c/c
3 16x16 2.56 18mm-8 Nos 2 - 8mm-5" c/c
2 16x16 2.56 18mm-8 Nos 2 - 8mm-5" c/c
1 18x18 3.24 18mm-10 Nos 2 - 8mm-5" c/c
GF 18x18 3.24 18mm-10 Nos 2 - 8mm-5" c/c

64. Design-Slab Detailing
Roof Slab Steel Detailing

65. Design
Roof Slab Steel Detailing for one-way

66. Design
Roof Slab Steel Detailing

67. Design
Roof Slab Steel Detailing for two-way (11.17x11.17)

68. Design
Typical floor Slab Steel Detailing

69. Design
Typical floor Slab Steel Detailing for one-way slab (11.17x3.17)

70. Design
Typical floor Slab Steel Detailing

71. Design
Typical floor Slab Steel Detailing for one-way slab (11.17x5.17)

72. Design
Typical floor Slab Steel Detailing

73. Design
Typical floor Slab Steel Detailing for two-way slab (11.17x11.17)

74. Design
Landing Slab Steel Detailing

75. Design
Landing Slab Steel Detailing for two-way slab (3.17x5.17)

76. Design
Stair Steel Detailing for one-way (GF to 1st Landing)
Stair Horizontal Length = Total length – LS -
𝐿𝐵
2
−
𝐺𝐵
2
= 12-4-
10
12𝑥2
-
15
12𝑥2
= 6.96

77. Design
Stair Steel Detailing for one-way (Typical floors)
Stair Horizontal Length = 12-4-4-
10
12
= 3.17

78. Design
Slab Steel Detailing Summary

79. Design-Footing Detailing
Footing Steel Detailing for Square footing

80. Footing Steel Detailing for Square footing
Design

81. Design
Footing Steel Detailing for Rectangle footing

82. Design
Footing Steel Detailing for Rectangle footing
L W H
23’ 6’ 3’
Main bar (Longitudinal direction) 22mm Ø 30Nos
Main bar (transverse-direction)
(bandwidth) 22mm Ø 39 Nos
Main bar (transverse-direction)
(for each extra end) 22mm Ø 7 Nos

83. Design
Footing Steel Detailing for Rectangle footing

84. Design
Footing Steel Detailing for Combine footing

85. Design
Footing Steel Detailing for Combine footing

86. Design
Footing Steel Detailing for Combine footing
L span length(inner)=12 -
18
12
= 10.5
L span length(inner)=(7 -
18
12
) x
1
2
= 2.75
L span length(center)=12
L span length(center)=7 x
1
2
= 3.5

87. Design
Footing Steel Detailing for Combine footing

88. Design
Footing Steel Detailing for Strip footing

89. Design
Footing Steel Detailing for Strip footing

90. Design
Footing Steel Detailing for Strip footing
Beam L W H
12 20 40
Main bar (Top bar) 22mm Ø 7 Nos
Main bar (Botom bar) 22mm Ø 7 Nos
Footing L W H
35 7 12
Main Steel 16mm Ø -6" c/c
Distribution Steel 12mm Ø -6" c/c

91. Design
Footing Steel Detailing for Mat footing
Story Point Load FZ Load FZ
BASE 1 F2 154.86 S4 121.17
BASE 2 F2 190.63 S4 150.87
BASE 3 F2 143.21 S4 114.68
BASE 4 F2 150.7 S4 121.77
BASE 5 F2 104.86 S4 85.51
BASE 6 F2 189.21 S4 148.14
BASE 7 F2 218.26 S4 170.69
BASE 8 F2 175.05 S4 137.04
BASE 9 F2 205.82 S4 163.89
BASE 10 F2 149.89 S4 120.69
BASE 11 F2 228.03 S4 178.79
BASE 12 F2 215.55 S4 165.91
BASE 13 F2 202.69 S4 156.24
BASE 14 F2 224.62 S4 176.07
BASE 15 F2 166.11 S4 132.32
BASE 16 F2 174.96 S4 139.1
BASE 17 F2 192.34 S4 152.11
BASE 18 F2 182.17 S4 144.17
BASE 19 F2 187.19 S4 149.28
BASE 20 F2 130.87 S4 105.32
Sum 3587.02 Sum 2833.76
Max 228.03

92. Design
Footing Steel Detailing for Mat footing
L W H
32 48 24
Main bar (x- direction) 16mm Ø - 6"c/c two layer
Main bar (y-direction) 16mm Ø - 6"c/c two layer

93. Thank you
Any
Question?