Study Program
Period
: S0673 / Building Construction II
: 2007
PICTURE IRON AND RESTATING
Meeting 13
Learning Outcome
By the end of this meeting, expected student will
be able to :
• Student can yield plan making of simple
building as according to conditions which have
been studied.
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Outline Items
•
•
•
Items 1
Items 2
Items 3
: Retortion of bone steel.
: Overlap or barb length and channeling.
: Log and Column
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WORK AND INSTALLATION OF BONE.
Retortion of Bone.
1. Bone bar may not be curved or straightened by damage
that bone.
2. Bone bar which profile after bended to be restraightened may not be curved again in distance 60 cm
from bending previously.
3. Planted bone bar some of in concrete may not be
curved or straightened field, except if determined in
pictures plan or agreed by planner.
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4. Curving and straightening bone bar must be done in a
state of chilled, except if installation proposed by
planner.
5. If warm-up permitted, bone bar of artless soft steel
profile can be heated until looked to be crimson but may
not reach temperature exceeding 350C.
6. If bone bar of natural soft steel cool workmanship in its
execution in the reality experience of warm-up above
100C which non continued moment, hence in
calculations as strength of steel have to be taken
strength of the steel which not experience of cool work.
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7. Bone bar of hard steel may not be heated, except
permitted by planner.
8. bent Bone bar with warm-up may not be made cool to
pass sprinkler with water.
9. Gilding bone bar with zinc may not be conducted in
distance 8 multiply diameter ( identification diameter)
bar from each part of curved.
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Tabel.2. Tolerance
BOLDNESS.
NOMINAL
DIAMETER.
TOLERANCE
(MM)
Chock, fastener
spiral.
Variable
5
Bone bar besides
profile.
(Artless iron) 
(Thread iron) 
15
(Artless iron) 
(Thread iron) 
20
Total Length after
20
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Overlap and channeling length.
1. If needed place tacking on bone where not be showed
at picture. Election of extension place have to be
consulted to supervisor of expert.
2. Overlap and channeling length have to as according to
price contained at Tabel.3.
Note : When length of overlap
• needed to bone bar with different bar diameter, have to
be based from smaller diameter.
• Shares bend from fundamental bone ( long bone), not
the included in length of overlap.
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3. Overlap can only wear at bone bar with diameter 30
cm.
d1  d2 : Length of LA based of smaller bone diameter.
a>2.5 d : is used “ d” of big diameter.
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Tabel 3. Length Channeling
Kekuatan Beton
Panjang Penyaluran
Tulangan Bawah
Karakteristik
Tulangan
Tulangan
Umum
Balok Anak
Pelat Lantai dan Atap
K
L
L1
L2
LA
225  K  350
40d dengan
40d dengan
150d dengan
35d dengan
bengkokan
bengkokan
bengkokan
bengkokan
Polos
225  K  350
Tulangan
Panjang Lewatan
28 hari (kg/cm2)
225  K  225
Ulir
150  K  225
40d dengan
45d dengan
bengkokan
bengkokan
35d atau 25d
25d dengan
10d dan lebih besar
45d atau 35d
dgn bengkokan
bengkokan
dari 150d
dgn bengkokan
40d atau 32d
45d atau 35d
dgn bengkokan
dgn bengkokan
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Note :
• If no other rule, length of bone overlap have to be
adapted for Tabel.3.
• Method tacking on besides extension of overlap have to
be adapted for the specification of project.
• Channeling length “ L” have to equal to “ price of L” like
in Tabel.3. added 5d.
• Channeling length and length of overlap for nets.
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LENGTH CHANNELING.
LENGTH of OVERLAP.
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Tabel.4. Form Relate by the end of Bone.
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Tabel.5. Tortuous Form is Middle Bar Bone
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Installation of Bone
• In each meeting of bone have to be bound with strand of
metal become militant with diameter 0,90 mm.
• To keep distance between bone, used isolator of bone
( scrawl ).
• Clean distance between bone have to be more big the
than 4 / 3 times harsh aggregate size measure, and in all
matter may not smaller than price following:
- 2,5 cm : at plat
- 3,0 cm : at column and log wedge with chocks.
- 5,0 cm : at column and wall twine spiral.
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•
Maximum distance between axis bone bars to axis
specified as follows:
a. At plate of floor, part of maximum momen, axial
distance between bone may not more than 20 cm or 2
thick times plate.
b. At logs, part of maximum momen, axial distance
between bone bar may not more than 15 cm; axial
distance between bone bars from other side higher level
log from 90 cm, may not bigger than is wide log body or
30 cm.
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c. At shares, axial distance between vertical bone may not
bigger than 3 thick times wall or 40 axial distance and
cm between horizontal bars may not bigger than 1,5
thick times wall or 40 cm.
d. Length bend finally.
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Part of Back part.
Middle Part
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PLATE
A. Installation of extension place of overlap.
• At direction unfold shortly.
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• At direction unfold length.
L1 = length unfold shortly.
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Inclination place.
• Axis of inclination have to be placed dot of L1 / 4 from
log face in direction unfold shortly cleanness, L1.
• Installation of additional bone D13 at tabletop lisp above
inclination of bone lisp such as those which seen picture
under.
• Thick concrete blanket have to according to ( Seeing
Tabel.1 : “ Thick Blanket Concrete”).
• If not be used bone net at plate of roof, bone tide to the
like picture under.
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B. Channeling length.
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• Plate with voute.
If any difference of elevation.
( have to be consulted with
supervisor of expert)
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If plate lay on log side.
Plate lay on log base.
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Bone For Hole
• All hole made at plate have to be consulted with
supervisor of expert.
• For to holey plate broadly hole 0,3 mm2 max and with
length of max 600 mm (long side) have to be made as
follows :
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• If c  100 hence bone have to be bended into like picture
side.
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• When attached box or frame plate, box have to be
attached before installation of bone ; and bone may not
blocked box or frame.
• When bone cutting cannot be obviate box or frame,
same additional bone broadly or bigger than bone have
to be enhanced in the affirmative supervisor of expert.
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Restating for special conditions
• When there are difference of elevation.( consulted with
supervisor of expert)
Note : if to > t hence restating have to agree supervisor
of expert.
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Log with high addition.
Note : condition of where bone to the cannot be
put down above like shown.
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Link with wall.
(beside ordinary plate bone, have to be enhanced the
following bone).
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Restating for the plate of cantilever
Bone have to be channeled to
log if there are high difference
right and left plate log.
Give min 2-D13 and bone
broadly larger ones of
broken bone.
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