Week 3 Challenge

1. 1. State the primary load cases to be considered for design.

• DEAD LOAD
• LIVE LOAD
• WIND LOAD
• EARTHQUAKE LOAD
• TEMPERATURE LOAD
• IMPACT LOAD ETC

2. What is One – Way slab?

LONGER SPAN LX

SHORTER SPAN LY

if LX/LY IS GREATER THAN 2 IT IS ONE WAY SLAB

3. What is the value of unit weight of structural steel and soil?

unit weight of structural steel

unit weight of soil

4. Name few sections that can be defined using Properties tab in STAAD Pro.

REINFORCED CONCRETE BEAM AND COLUMN AND STEEL BEAM AND COLUMN OF DIFFERENT SECTION

I SECTION CHANNEL SECTION ANGLES BUILT UP SECTION

5. Define Primary Beams.

MEMBERS JOINING COLUMNS ARE PRIMARY BEAMS OR MAIN BEAMS

2. 1. State the factors and parameters that influence the design pressure intensity of a high-rise building.

2. Mention the load transfer process of a Reinforced Concrete Building.

LOAD on SLAB of structure - beams - colomns - footings

load flow path of RCC building.

3. 1. Differentiate One-Way and Two way slabs. Elaborate each slab type.

2. Explain the concept of secondary beams with proper sketch.

3. Mention the Primary load cases.
a. State the Indian Standards for each load case
b. Detail the parameters of each load case
c. Brief each load case

4. Detail the steps involved in assigning Properties and Support to a model using STAAD pro sequentially.

GOTO PROPERTIES - define properties - select section database(TYPE F SHAPE)

- Assign properties to selected beams or columns

GOTO supports - CREATE - select SUPPORT- Add - Assign support

5. Brief the steps to be followed to create and assign secondary beams in STAAD Pro

SECONDARY BEAMS are modelled first and property is assigned to BEAMS

Practical

1. Calculate the wind pressure for the given building
a. Building Dimension : 20m x 30m x 20m height RCC
b. Building usage : Hospital block in city centre
c. Location : Darjeeling
2. Calculate the Dead load and Live load for the above building with reference to IS standards ( assume suitable sections )

RESULTS - the wind pressure for the given building 1941.2N/m2

LIVE LOAD FOR HOSPITALS WARDS OPERATION THEATRES - 3 KN/M2

lobbies corridors staircases - 4 KN/M2

RESULTS - DEAD LOAD AND LIVE LOADS are assigned into the model in floor loads

and member loads on the beams.