MANUKAU INSTITUTE INSTIT UTE OF TECHNOLOGY - FACUL FACULTY TY OF ENGINEERING AND TRADES TRADES
NEW ZEALAND DIPLOMA IN ENGINEERING
ENGINEERING FUNDAMENTALS
TRUSS LAB REPORT (02 MAY 2016)
CREATED BY: ABHISHEK CHIB LECTURER: CORNELIS KOK
I !"#$%! &'$& &' $*+,!+& "+&$+ ,. /+ /% +#. +#. N $%& 3 & !&'!% $ ". 3 $+. &'!% !%+ /% I '$4! +& $##/! $""! & &' $*+,!+&5 + $%& % + 3## & $+. &'!% !%+ A+. /% % ,$*! &'$& $%! +& ,. /+ '$4! 7!!+ %!3!%!+"! $%%$&!#.
OBJECTIVE:
-
T'! ,$+ ,&4! 3 &' !8!%,!+& & 9*%! &'! 3%"! + !$"' +& 7. &'! '!# 3 !+*+!!%+* &%"&%! 7. + +& ,!&'
LEARNING OUTCOME:
I+ %$"&"$# $#"$&+5 &#;$&+ 3 !+*+!!%+* !*++* T *%$! &!"'+"$# ",!&!+". + &%"&%! !+*+!!%+* &'%*' !8!%,!+& 3 #$7%$&%.. [1]
THEORY:
A &% !8!"&! & "+&$+ +4$# &'$& $%! "++!"&! 7. ,!&' 3 + +& $+ /'"' %&! $& 7&' !+ 7. ,!&' '+*! +& % %##!%5 +/+ $ &$&"$##. !&!%,+$&! S&$&"$##. +&!%,!$&! $%! &'! &%! &'$& $%! %&! $& ,%! &'$+ &/ &+ I+4!&*$&+ 3 &'!! "+&+ $& !$"' +! .!# &'! ,$*+&! 3 &'! 3%"! + !4!%. +4$# 3%, &'! &% T'!! ,*'& 7! ",%!+ % &!++ 3%"! D$,!&!% 3 &'! !$"' %$ < =>?,, Y+*@ ,# < 210GP$ 1
APPLICATIONS OF TRUSS: T'! &#;$&+ 3 $#"$&+ 3 &% $#! 3% ,! "+&%"&+ + "+&%"&+ +&%. I+ &'! %3 & "+&%"&+5 &'! &#;$&+ 3 &% "$+ 7! $#! F% &'! %! 3 $+$#. &'! &%! $%! &'*'& & 7! + + +&! /'!%! &'! &%$*'& !*,!+&@ ,!!& !%&"$# $+ $*+$# /## & $"& + ",%!+ % &%$+ /'"' ,!$+ &'$& +4$# % ,!,7!% $%! +"#! 1
TYPES OF TRUSS:-
2
PROCEDURE:
M$! %! &'$& &'! /%+* 3 $$%$& %!% M$! &'! ;!% %!$+* 3 &'! #$ "!## $+ &'!+ %! &'! #$ 7. 100N 7. #+* $& &'! ",&!%;! #$ 3%"! #$. A& &'$& +& +&! /+ &'! %!$+* 3 &%$+ + !4!%. +& 7. &%++* &'! $# + #$. 3 #$ "!## A*$+ ,$! &'! ;!% %!$+* 3 #$ "!## $+ &'!+ +"%!$! &'! #$ 7. 200N5 00N5 00N A& &'$& +& +&! /+ &'! &%$+ %!$+* +"$&+* &'! 3%"! "$%!3##. A3&!% "$#"#$&+* &'! *&$# 4$#!5 &'!+ /! +!! & "$#"#$&! &'! 4$#! 7. &'! +& ,!&' &'!%!&"$##. T'!+ /! +!! & %$/ &'! &%$+ *%$' 3 !$"' 3%"! T'! !8!%,!+& 9+'! $& &' +&
ASSUMPTIONS:
C$%!3##. +&! /+ &'! %!$+* T$! "+!%$&+ 3 &'! +!*$&4! $+ &4! +"$&+ 3 &'! %!$+* + &'! #$ 3%"! #$. I+"%!$! &'! #$ "$%!3##. 7!"$! &'! #$ %!$+* "$+ 4$%. C$%!3##. #* &'! /%! + &'! #& $+ $4 #! "++!"&+ 3% !8$"& %!$+*
METHOD OF DATA COLLECTION:-
STRAIN METER FORC E METE R
TRUSS STRUCTURE
I '$4! "$#"#$&! &'! 3%"! 7. &#;+* &% &%"&%! /'"' '$ +4$# % ,!,7!% A& &'$& +& I *& ,. &%$+ %!$+* 7. &#;+* $ *&$# &%$+ ,!&!% $+ + $4$+"! *&$# ,!&!% &'!%! $%! 1 +& $+ I &#;! ,!,7!% 7!"$! $%! & %!%! D&+"&4! 3%"! $%! 7&$+! 7. "'$+*+* &'! #$ + 7!&/!!+ 0N & 00N
HEALTH AND SAFETY:-
C$%!3##. !$# /&' &'! /%! C$%!3##. #* &'! /%! + &'! #& & !! $/$. 3%, $+. 7#" + /%+* 3 $%& D!$# /&' &'! 3%$*#! ",+!+& + &'! #$7 /&' &#!%$+"! $ & "$+ !&%. &'! #.&!"'+"@ %!%&.
EXPERIMENTAL RAW DATA COLLECTED:-
Load [N]
1
2
3
4
5
6
7
AD
DB
DE
AE
EF
FC
FA
-15
05
-16
-20
-22
-7
-13
100
-25
10
-5
-30
-11
-2
-23
200
-34
15
6
-41
-2
4
-33
300
-43
21
17
-52
9
9
-43
400
-53
26
28
-63
20
15
-54
0
REAL STRAIN VALUES:-
Load [N]
1
2
3
4
5
6
7
AD
DB
DE
AE
EF
FC
FA
0
0
0
0
0
0
0
0
100
-10
5
-11
-10
11
5
-10
200
-19
10
-22
-21
20
11
20
300
-28
16
-33
-32
31
16
-30
400
-38
21
-44
-43
42
22
-41
CONCLUSION:F% &' #$7 & "%&"$# & !! &'! !,!+& % &# $& &'! ,& '*'!& ,$+&$+"! $+ "$%!3##. &#;! 7. &'! &!+& + %!% & *!& %*'& 4$#!
