Concrete

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REINFORCED CONCRETE AND

IRON RESTATING.

Meeting 12

Study Program

: S0673 / Building Construction II

Year



: 2007





Bina Nusantara

3

Learning Outcome

By the end of this meeting, expected student will
be able to :


Student can explain made building construction
of concrete along with its picture.

Bina Nusantara

4

Outcome Items


Items 1

: Common Term of reinforced concrete.


Items 2

: Tables of concrete quality and class.


Items 3

: Bone and is thick of concrete blanket.


Items 4

: Execution of installation of restating.

Bina Nusantara

5

Construction Reinforced Concrete.

Terms

:


Concrete

:

obtained

materials

by

mixing

smooth

aggregate,

harsh

aggregate,

water

and

cement
.


Reinforced

concrete
:

concrete

which

consist

of

bone

bar

and

planned

pursuant

to

ascription

that

both

the

materials

cooperate

in

shouldering

styles
.


Prestressed

concrete
:

reinforced

concrete

in

which

have

been

generated

by

tensions

of

intern

in

such

division

and

value

of

aspect

till

tensions

effect

of

burden

can

be

neutralized

until

an

wanted

level
.

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Preprint

concrete
:

parts

of

reinforced

concrete

or

spineless

which

printed

in

dimiciling

is

other

the

than

dimiciling

finally

in

construction
.


Light

Concrete

:

concrete

where

its

aggregate

consist

of

light

materialss
.


Spineless

concrete
:

concrete

which

do

not

contain

bone

bar
.


Bone

steel

:

steel

type

weared

for

the

bone

of

concrete

which

must

fulfill

certain

rules
.

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7


Bar

which

is

profile
:

bone

bar

with

special

surface

form

to

enlarge

juxtaposition

with

concrete
.


Artless

bar

:

bone

bar

with

slippery

surface

and

in

form

of

prismatis
.


Bone

bundle

:

binding

to

consist

of

2
,
3
,
4

or

more

bar

which

is

bound

profile

along

with

slivering,

so

that

all

binding

to

work

as

one

unity
.


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8

Class and Quality Concrete


Concrete

for

the

construction

of

reinforced

concrete

divided

into

class

and

quality

like

in

tables

beside

this

:

Class

Quality

Goal

I

B

Non Structural

II

B1

K
-
125

K
-
175

K
-
225


Structural

III

K > 225

Structural

Bina Nusantara

9

Bone

Barb and Bend.

full (of) Barb:


Artless Bar.







Bar which is profile.

d

= artless bar diameter.

dp

= diameter identification
of bar which profile.

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Oblique barb:

Artless

Bar



Bar

which

profile
.

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11

Oblique Barb at
Chock.

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12

For

bone

also

have

to

be

paid

attention

:


Length

channeling

of

bone

depress
.


Length

channeling

of

interesting

bone
.


length

of

overlap
.


Distance

between

bone

bar
.


etc


Bina Nusantara

13

Parts of Construction

PLATE :


Thick

of

plate

may

not

be

taken

less

than

7

cm

for

the

plate

of

roof

and

12

cm

for

the

plate

of

floor
.


Plate

bone,

including

divisor

bone

may

not

be

taken

less

than

needed

to

shoulder

to

dwindle

and

change

of

temperature
.

Wide

of

bone

have

to

be

taken

minimum

0
,
25

%

from

wide

of

existing

concrete
.


Wide

bone

divisor

of

minimum

taken

20

%

from

wide

fundamental

bone
.


Bone

diameter

for

the

plate

of

fundamental

bone

minimum



8

mm,

divisor

bone



6

mm,

when

used

soft

steel

and

fundamental

bone



5

mm,

divisor

bone



4

mm

4

mm

for

hard

steel
.


Plate

which

thicker

than

25

cm

have

to

be

attached
.


plate

in

places

of

momen

maximum

fulcrums

and

maximum

field

momen

distance

of[is

each

bone

bar

may

not

more

than

20

cm

or

2

thick

times

plate
.

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14

Wall

:


Thick

taken

vertical

wall

minimum

1

/

30

from

unfolding

wall

cleanness

or

12

cm

for

wall

shouldering

to

flex

and

10

cm

for

wall

which

not

shoulder

to

flex
.

External

walls

of

subterranean

room

minimum

20

cm
.


Installation

of

bone

vertical

wall

thickly

less

than

12

cm,

bone

attached

in

the

middle

of,

while

wall

of

reservoir

water,

and

other

wall

thickly

>/

30

cm

have

to

be

attached

bone

double
.


Wide

minimum

bone

0
,
25

%

from

wide

existing

concrete
.


Used

bone

diameter

equal

to

plate

bone
.


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15

LOG :


Wide minimum log body 1 / 30 times unfold cleanness.
High log have to as according to is wide log and fulfill
demarcation of restating.


For high log, comparison between wide and high more
than 2,5 for log to continue and more 4,5 for log to the 2
fulcrums.


Interesting bone minimum to every surface of log.


Width surface of minimum bone steel


12 mm.


Distance each bone may not more than 15 cm and less
than 3 cm.


Distance wedge with chock maximum log 30 cm or 2 / 3
is high log.

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16

COLUMN :


Column

size

measure

of

strukturil

wide

minimum

=

15

cm
.


Wide

minimum

bone

=

1

%

from

wide

surface

of

column,

with

minimum

1

bone

bar

in

each

surface

area

angle
.


Long

Bar

bone

diameter

minimize



12

mm
.


Wide

long

bone

of

column

may

not

be

taken

more

than

6

%

from

wide

of

surface

of

concrete
.


If

long

bone

of

continued

column,

tip

of

bar

may

not

give

by

barb
.


Distance

wedge

with

chock

maximum

at

long

bone

of

column

taken

smallest

from

:


-

Smallest

size

measure

from

wide

surface

of

column
.


-

15

times

smallest

long

bone

diameter
.


-

30

cm


Bina Nusantara

17

Thick Cover of Concrete


Thick

cover

of

minimum

concrete

have

to

be

taken

as

according

to

Tabel
.
1
.


Thick

cover

of

concrete

have

to

as

according

to

planning

picture
.

If

not

there

are

in

the

plan

is,

thick

cover

of

concrete

can

be

taken

according

to

Tabel
.
1
,

in

the

affirmative

and

pertinent

planning
.


In

Tabel
.
1
.

beside,

which

interpreted

with



in”

is

external

area

covert

concrete

of

influences

of

weather

(

rain,

direct

sun

and

others)

and

do

not

relate

to

water
.

Bina Nusantara

18


Tabel.1. Thick Cover of Minimum concrete.



TABLES OF COVER OF


CONCRETE MINIMUM.

(CM)

Construction Parts

Inside

Outside

Do not Seen

Plate and membrane

1

1.5

2

Wall

1.5

2

2.5

Log

2

2.5

3

Column

2.5

3

3.5

Bina Nusantara

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Which

interpreted



outside”

is

area

when

external

area

natural

concrete

influences

of

weather

(

rain,

direct

sun,

and

others)

and

relate

to

water
.



While

which

interpreted



do

not

seen”

when

external

area

concrete

after

concrete

finish

worked

cannot

be

estimated

again
.

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20

B.
At

constructions

and

or

parts

of

concrete

construction

of

pre

print,

thick

cover

of

concrete

can

be

taken

less

than

which

determined

like

sentence

(

a

)

with

minimum

1

coming

from

accuracy

of

printing
;

mould

and

way

of

moulding

can

guarantee

thickly

cover

of

the

concrete

and

concrete

cures

is

in

such

a

manner

so

that

can

limit

barstly

effect

dwindle
.

Bina Nusantara

21

C.
In

all

matter,

thick

cover

of

concrete

may

not

less

than

which

determined

following
:


At

artless

bar
.




:

d


At

bar

which

profile
.



:

dp


At

binding

bone
.




:

de


where

d

is

artless

bar

diameter,

dp

is

diameter

identification

of

bar

which

profile

according

to

Section

3
.
7

sentence

(

4

)

and

de

is

diameter

of

equivalent

bind

bone

according

to

section

3
.
7

sentence

(

6
)
.

Bina Nusantara

22

D.
Thick

cover

of

concrete

which

determined

in

sentence

(

a)

up

to

(

c

)

have

to

be

added

with

minimum

1

cm

if

surface

of

the

concrete

located

in

in

corrosive

environment,

like

when
:


relate

to

sea

water
.


getting

influence

of

alkali

sulphate

of

ground

water

or

ground
.


relate

to

corrosive

gass

or

vapour
.


In

this

case,

hence

before

planning

started

is

thick

cover

of

the

concrete

have

to

be

specified

ahead

by

planner

pursuant

to

study

regarding

the

nature

of

corrosive

the

than

that

environment

also

take

counsel

with

taskmaster
.

Bina Nusantara

23

WORK AND INSTALLATION OF BONE

Work of Amputation and Retortion.


1. Work Detail and installation have to be prepared as job
picture which must be made by Contractor before
execution of work and agreed by Board of directors
Field.


Bina Nusantara

24

2.
Barb

have

to

be

passed

to

each

terminating

of

artless

bone
.

Barb

thread

iron

only

required

if

fulfilling

the

following

situation

:


Especial

bone

laying

in

every

column

angle

and

log

which

is

not

covert
.


Chock
.


Placement

above

two

fulcrums
.


By

the

end

of

bone

to

the

from

cantilever

beam

and

plate
.


Bina Nusantara

25

Column