STEP 1: STRUCTURAL GEOMETRY I. Introduction II. What does STAAD.pro mean?

1. STAAD.pro is a general purpose program for performing the analysis and design of a wide variety of types of structure.

2. Developer of STAAD.pro REI – Research Engineers International

3. Latest version: STAAD.pro V8i III. General Overview:

1. How to open STAAD.pro 2. 4 Types of Structures

a. Space b. Plane c. Floor d. Truss

3. STAAD.pro Environment Organization Title Bar 1. Main Menu 2. Toolbar 3. Page Control 4. Data area 5. Main Window

4. Two Coordinate Axes:

1. Classification a. Global Coordinate axis b. Local Coordinate axis

2. Relation/Beta Angle

5. Open an Existing Structure 6. Two methods of Model Generation and

Assigning of Structural Data and Relationship a. Graphical User Interface (GUI) b. Input Command Interface

7. STAAD.pro Three Basic Steps

1. Structural Geometry/Model Generation 2. Load System 3. Analysis and Design

Three Entities on Modeling

1. Node – joint, junction , intersection and point 2. Member – two node entity

E.g. beam, column, truss members 3. Element

a. Plate – 3 or 4 node entity E.g. slabs and walls

b. Surface Element – 3 to multiple node entity E.g. shear wall and reinforced concrete wall

c. Solid entity – 8-node entity E.g. huge solid structures

1. Structural Geometry

FLOOR FRAMING SYSTEM (typical)

LEFT SIDE ELEVATION Property: Exterior Beams: 0.30 x 0.20 m Interior Beams: 0.40 x 0.20 m Intermediate Beams: W 14 x 30 Rectangular Columns: 0.40 x 0.25 m Circular Columns: 0.30 m diameter Slab Thickness: 0.100 m Beta Angle: All exterior columns along z-axis: 90° Spec: Intermediate Beams: Released Mx, My and Mz Support: All Fixed Design Parameters: f’c = 21 MPa fy = 414 MPa

3.5 m 3.5 m

3.0 m

5.0 m 5.0 m 5.0 m

6.0 m

4.0 m

3.5 m

x

z

y

2.8 m

2.8 m

2.8 m

4.0 m

8.0 m 6.0 m 3.0 m

y

z x

1. Structural Geometry FLOOR FRAMING SYSTEM (Typical)

SIDE ELEVATION

Property: Exterior Beams: 0.40 x 0.20 m Interior Beams: 0.45 x 0.20 m Intermediate Beams: W 16 x 40 Rectangular Columns: 0.40 x 0.25 m Circular Columns: 0.35 m diameter Slab Thickness: 0.120 m Beta Angle: Selected columns: 90° (Refer to the framing plan) Spec: Intermediate Beams: Released Mx, My and Mz (Start and End) Support: All Fixed Design Parameters: f’c = 27 MPa fy = 414 MPa

STEP 2 LOAD SYSTEM 4-Storey Office Building

FLOOR FRAMING SYSTEM (Typical)

ARCHITECTURAL PLAN (Typical)

LEFT SIDE ELEVATION

Property: Exterior Beams: 0.50 x 0.20 m Interior Beams: 0.60 x 0.20 m Intermediate Beams: W 14 x 30 Rectangular Columns: 0.40 x 0.30 m Slab Thickness: 0.100 m Beta Angle: Selected columns: 90° (Refer to the framing plan) Spec: Intermediate Beams: Released Mx, My and Mz (Start and End) Support: All Fixed

6.0 m 6.0 m 3.0 m 4.0 m 4.0 m

4.0 m

4.0 m

3.0 m

6.0 m

6.0 m

x

z

y

y

z x

2.8 m

2.8 m

3.0 m

4.0 m

6.0 m 4.0 m

6.0 m 8.0 m

4 1.5 4 4

4

4 4 4 4 4 1.5

3.5

3.5

3.5

3.0

3.0

x

z

y

Office Office Office Office

Hallway

Balcony Balcony

Office Office Office Office Balcony Balcony

8 8 8 8 1.5 1.5

7

3.5

6

2.8 m

2.8 m

2.8 m

4.0 m

3.5 m

7.0 m 7.0 m

y

z x

Design Parameters: f’c = 27 MPa fy = 414 MPa Load System DEFINE LOADS: I. Seismic Load (as per UBC 1997)

1. Defining Parameters a. Seismic Zone Factor Z = 0.40 (Zone 4)

b. Importance Factor I = 1 (standard occupancy) c. Numerical coefficient Rw @ x-direction = 8.5 (SMRF) Rw @ z-direction = 8.5 (SMRF) d. Site Coefficient for Soil Characteristics S = 4 (S4) e. Near Source Factor Na = 1.0 Nv = 1.0

2. Selfweight 3. Joint Weight 4. Member Weight 5. Element Weight 6. Floor Weight II. Wind Load (as per NSCP 2001)

1. Wind Pressure/Intensity: p = qGCp – qh(GCpi) (kPa)

2. Defining Parameters: a. Exposure D b. Wind Speed V = 200 kph c. Importance Factor, Iw = 1 (standard

occupancy)

Height Wind Intensity

4.0 m 0.88 kPa

6.8 m 0.99 kPa

9.6 m 1.18 kPa

12.4 m 1.19 kPa

PRIMARY LOADS 1. E @ x (Earthquake Load at x-axis) UBC Load X 1 2. E @ z (Earthquake Load at z-axis) UBC Load Z 1 3. W @ x (Wind Load at x-axis)

Wind Load X 1 4. W @ z (Wind Load at z-axis)

Wind Load Z 1 5. D (Dead Load) i. Selfweight (-y direction) ii. Member Load 6” thk CHB (ext partition) 2.73 kPa 7” thk CHB (Int partition) 2.11 kPa Stairs 4.00 kPa iii. Floor Load 25 mm concrete topping 0.70 kPa Floor finish (linoleum) 0.05 kPa Ceiling (10 mm gypsum board) 0.08 kPa Utilities (suspended steel channel) 0.10 kPa Interior Partition 1.00 kPa

Waterproofing 0.07 kPa 6. L (Live Load) 1. Member Load Stairs 4.80 kPa

2. Floor/Area Load Office 2.40 kPa Balcony 2.90 kPa Hallway 4.80 kPa Roof Deck 4.80 kPa

LOAD COMBINATION: Refer to NSCP 2010 ACI AISC 13

th Ed