

















Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Corrections for various errors that can occur when measuring distances using a steel tape, including errors due to incorrect tape length, slope, temperature, tension, and sag. It includes formulas and examples for calculating corrections for each type of error.
What you will learn
Typology: Lecture notes
1 / 25
This page cannot be seen from the preview
Don't miss anything!
Tape
corrections
Prepared
by:
Andre
āPaul
C.^
Ampong
Prepared
by:
Andre
āPaul
C.^
Ampong
Prepared
by:
Andre
āPaul
C.^
Ampong
I
I
I
Prepared
by:
Andre
āPaul
C.^
Ampong
A rectangular lot was measured using a 50
ām
rectangular
lot
was
measured
using
a
m
steel
tape
which
was
found
out
to
be
m
too short If the recorded length and width oftoo
short
If
the
recorded
length
and
width
of
the
lot
are
m
and
m,
respectively determine the following:respectively
determine
the
following:
Actual
dimensions
of
the
lot
Error in area introduced due to the erroneous
Error
in
area
introduced
due
to
the
erroneous
length
of
tape
Prepared
by:
Andre
āPaul
C.^
Ampong
Prepared
by:
Andre
āPaul
C.^
Ampong
For gentle slopes (less than 20%)For
gentle
slopes
(less
than
h
C
h^
2
2
=
For
steep
slopes
(between
and
s
h^
2
4 3
2
8
2
h s
s h
C
h^
=
For
very
steep
slopes
(greater
than
8
2
s
s
Prepared
by:
Andre
āPaul
C.^
Ampong
Īø
cos 1
ā
=
s
C
h
α
s
t^
α Prepared
by:
Andre
āPaul
C.^
Ampong
A steel tape known to be of standard length atA
steel
tape
known
to
be
of
standard
length
at
o^ C,
is
used
in
laying
out
a
runway
m long
If its coefficient of linear expansion is
m
long
If
its
coefficient
of
linear
expansion
is
o^ C,
determine
the
temperature
correction and the correct length to be laidcorrection
and
the
correct
length
to
be
laid
out
when
the
temperature
is
o^ C.
Prepared
by:
Andre
āPaul
C.^
Ampong
A heavy 50
ām tape having a cross
āsectional
heavy
m
tape
having
a
cross
sectional
area
of
cm
2
has
been
standardized
at
a
tension of 5 5 kg
If E = 2 10 x 10
6
kg/cm
2
tension
of
kg
If
x
kg/cm
determine
the
elongation
of
the
tape
if
a
pull
of 12 kg is appliedof
kg
is
applied
Prepared
by:
Andre
āPaul
C.^
Ampong
3
2
L
C
Ļ
=
2
24
P
C
s^
=
Prepared
by:
Andre
āPaul
C.^
Ampong
Error due to wind is similar in effect to errorError
due
to
wind
is
similar
in
effect
to
error
due
to
sag
May be avoided by not conducting survey on a
-^
May
be
avoided
by
not
conducting
survey
on
a
windy
day
Prepared
by:
Andre
āPaul
C.^
Ampong
-^
A
line
was
measured
to
be
m
using
a
30
ām
g
steel
tape
supported
throughout
its
length
under
a
pull
of
4
kg.
The
mean
temperature
during
the
measurement is 35
oC
The tape used has a cross
measurement
is
35
C
.^
The
tape
used
has
a
cross
ā
sectional
area
of
square
centimeters
and
has
a
standard
length
at
20
oC
under
a
pull
of
5
kg.
The
d l
f^
l^
f h
6
k /
2
d
modulus
of
elasticity
of
the
tape
is
2
x
10
6
kg/cm
2
and
the
coefficient
of
thermal
expansion
is
0.0000116/
oC.
Determine the error due to temperature changeDetermine
the
error
due
to
temperature
change
Determine
the
error
due
to
tension
Determine
the
corrected
length
of
the
line
Prepared
by:
Andre
āPaul
C.^
Ampong