Week 3 Challenge

1. State the primary load cases to be considered for design.
2. What is One – Way slab?
3. What is the value of unit weight of structural steel and soil?
4. Name few sections that can be defined using Properties tab in STAAD Pro.
5. Define Primary Beams.

1 primary load cases are

DEAD LOAD AND LIVE LOAD,

2. WHAT IS ONE WAY SLAB

SLAB SPANNING IN ONE DIRECTION OR IN OTHER WORDS LONGER SPAN TO SHORTER SPAN GREATER THAN 2 IS KNOWN AS ONE WAY SLAB.

3 .UNIT WT OF STRUCTURAL STEEL AND SOIL,

STRUCTURAL STEEL-- 78.5 KN/m3

SOIL --18 kn/m3

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

circle, rectangular, t beam.

5. Define Primary Beams.

BEAM SUPPORTED ON THE COLUMNS ARE KNOWN AS PRIMARY BEAM.

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

FACTOR AND PARAMETER THAT INFLUENCES THE PRESSURE INTENSITY OF BUILDING ARE

DESIGN WIND SPEED Vz, AND BASIC WIND SPEED , PROBABILITY FACTOR,TERRAIN FACTOR,TOPOGRAPHY FACTOR

Vz = Vb.k1.k2.k3

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

slab--beam-- column-- footing

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

ONE WAY slab-- spanning in one direction, Ly/Lx > 2

two way slab-- spanning in two direction and Ly/Lx<2 OR =2

SECONDARY BEAM-- beam resting on /supported by primary beam known as secondary beam.

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

a- indian standard for each load case

iS 875-PART1 D.L

IS875-PART 2 L.L

IS875-PART3 WIND LOAD

IS875-PART 4 SNOW LOAD

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

wind pressure Pz= 0.6 VZ.Vz

where Vz= Vb. K1.K2.K3

Vb= BASIC WIND SPEED

k1= probability factor = 1.07

k2= category 4, class B

0.76

k3= 1

VZ= 38.22

Pz= 876

0.87kn

(Vb= basic wind speed of dargjeeling= 47m/s)

2. Calculate the Dead load and Live load for the above building with reference to IS standards ( assume suitable sections

DEAD LOAD= 20X30x20X 25= KN

LIVE LOAD=5 KN/M2 on each floor