Проект жилого дома G+1

G+1 AR, SN, EL.dwg

G+1 ST.dwg

G+1 STRUCTURAL ANALYSIS.docx

Project:-G+1 Residential Building
Analysis and design of solid slab2
Analysis and design of beam3
Analysis and design of staircase5
Finite element model and analysis results from SAP200018
1Frame analysis results19
Analysis and design of solid slab
A sample analysis template for solid slab is shown below
Material constants C-25 S-300
Dead loads i.e self weight Floor finish and partition loads are shown in the template
Load Transfer on Beams
Note:- N.A.-Means Not Applicable
Fck for C25 is 20Mpa
Analysis and design of beam
Design of beam sections are performed using Microsoft Exel spreed sheet template as:
Note: The dimensions has ben changed
Calculate Reinforcement
Concrete - Grade C-25
Negative Reinforcement
Posetive Reinforcement
Shear Capacity of Concrete
Design Shear Reinforcement
Analysis and design of staircase
The following is template for staircase:
Average slab thickness =
cm marble floor finish =
Dead load at Landing:
Check for Deflection
According to EBCS-2 Sec. 5.2.2 The final deflection shall not exceed the value:
Check for Shear Capacity
Calculated Shear Capacity
Reinforcement calculation
According to EBCS-2 Sec.7.2.2.2 the ratio of the secondary reinforcement to the
main reinforcement shall be at least equal to 0.2. Thus transverse reinforcement:
Step 1 - Check Soil Pressure
Pressure from Self Weight of Ftg =
Net Allowable Soil Pressure =
Step 2 - Check Thickness
Check Punching Shear
Punching Shear Capacity of Footing
Critical Section Occurs at d2 (Note: EBCS say critical section is at
5d which contradicts all text books
Check one-way Action
Calculate Shear Critical Section
Critical Section From Edge of Footing is =
Pressure At Critical Section is =
Shear At Critical Section is =
Shear Capacity of Section
Step 3 - Design for Flexure
Critical Section For Moment
Moment At Critical Section is =
Trapizoidal Footing Design
TRANSVERSE DIRECTION
Column Design According to EBCS 2 - 1995.
Structure Classification:
Dimensions in x-x direction:
Dimensions in y-y direction:
Limits of Slenderness:
But the slenderness ratio is:
i = Radius of gyration =
Le =Effective buckling length
Effective Buckling Length:
About x-x direction.
About y-y direction.
the effective buckling length:
Ignore Secondary Effects
Calculate Eccentricities in the x-x Direction
Calculate Eccentricities in the y-y Direction
max of 0.6e02 + 0.4e01
Reinforcement Calculation:
EBCS 2 - 1995: Part 2 Biaxial Chart No. 6
Stirrups should be provided
Provide minimum shear reinforcemnt of ∅8 CC 150 mm
Finite element model and analysis results from SAP2000
Fig1. Finite element model
Fig2 Bending moment diagram
Fig4 Shear force diagram
1Frame analysis results
TABLE: Element Forces - Frames