PORTAL FRAME (1)
OBJECTIVE : To determine the horizontal deflection of a portal frame : Superposition Method
APPARATUS :
The apparatus comprise of :
1.
2.
3.
4.
5.
6.
Portal Frame
Frame supports : Pin and Roller
Dial gauge
Venire Caliper
1 set of weights
Steel ruler
Portal Frame
Loading 1 : Horizontal load
Loading 2 : Vertical Load
Loading 3 : Vertical and Horizontal Load
RESULTS :
Width of frame
: …………………………………mm
Thickness of frame
: …………………………………mm
Moment of inertia
: …………………………………mm4
Dial gauge reading, 1 div
: …………………………………mm
Table 1 : Loading 1
Horizontal deflection
Theoretical deflection
Horizontal loads ( N )
Dial gauge div.
mm ( div x 0.01 )
= 0.5 P (mm)
0
2
4
6
8
10
12
Table 2 : Loading 2
Horizontal deflection
Theoretical deflection
Vertical loads ( N )
Dial gauge div.
0
4
8
12
16
20
24
mm ( div x 0.01 )
= 0.075 P (mm)
Table 3 : Loading 3
Vertical loads
Horizontal deflection
Theoretical deflection
+
Dial gauge div.
mm ( div x 0.01 )
= 0.075 P + 0.5 P (mm)
Loading 2
Loading 1 + 2
Loading 3
Horizontal loads
0
4+2
8+4
12 + 6
16 + 8
20 + 10
24 + 12
Table 4
Loading 1
Load (N)
Deflection
(mm)
Load (N)
Deflection
(mm)
Load (N)
Deflection
(mm)
Load (N)
0
0
0
0
2
4
2+4
2+4
4
8
4+8
4+8
6
12
6 + 12
6 + 12
8
16
8 + 16
8 + 16
10
20
10 + 20
10 + 20
12
24
12 + 24
12 + 24
Deflection
(mm)
RESULTS
1. Using the data from the Table 1, 2 and 3, plot the graph of the horizontal deflection verses load
and draw the best-fit curves through the plotted points.
2. From the graphs, calculate the average deflection for every deflection and fill in Table 4.
3. From the data in Table 4, plot the graph of the horizontal deflection verses load for loading 3 and
loading 1 + 2. Draw the best curve through the plotted points.
CONCLUSION
1. Based on the 2 curves on the graph from Table 4, conclude the horizontal deflection of frame
based on the superposition method
2. State the possible factors that might have influenced your results and means overcoming it.
PORTAL FRAME (2)
OBJECTIVE : To determine the relationship between horizontal reaction and applied load.
APPARATUS :
The apparatus comprise of :
1.
2.
3.
4.
5.
6.
Portal Frame
Frame supports : Pin and Roller
Dial gauge
Caliper Venire
1 set of weights
Steel ruler
Horizontal Load
Vertical Load
RESULTS
:
Width of span
: …………………………………mm
Thickness of span
: …………………………………mm
Moment of inertia
: …………………………………mm4
Table 1
Theoretical (N)
Horizontal load (N)
Experimental (N)
0.5P
0
2
4
6
8
10
12
Table 2
Theoretical (N)
Vertical load (N)
Experimental (N)
0.075P
0
4
8
12
16
20
24
1. Draw the portal frame including the height and width. Show the position of load in drawing.
2. From the data in Table 1and Table 2, plot the graph of horizontal reaction verses load for
experimental and theoretical. Draw the best-fit curve through the plotted points.
CONCLUSIONS
:
1. From the experiment, state the relationship between applied load and horizontal reaction.
2. Compare the reaction at each support between experimental and theoretical.
3. State the possible factors that might have influenced your results and means of overcoming it.
CIVIL ENGINEERING DEPARTMENT
PORTAL FRAME
No.
I/C No.
Name
1.
2.
3.
Section / Group
Lecturer’s Name
Item
Mark
Mark
Introduction
2
Objective
5
Equipment
25
5
Theory
5
Procedures
8
Data / Table
10
Data Analysis / C.P / Graph
35
15
Results of Experiment
10
Discussions
20
Conclusion
35
Suggestions / Comments
Reference / Attachment
Total
10
5
5
5
100
100
Mark