IBS METHOD OF CONSTRUCTION

TITLE: SUPERSTRUCTURENO OPERATION METHOD DIAGRAM PLANT/

MANPOWERQUANTITY OUTPUT DURATIO

N

36First :Install the ground beam

Setting-out on the location of ground beam.

- Surveyor incharge will setting the location of ground beam by using the theodalite and marking the point according level stated in plan

- The point then will mark with wooden stick by labour incharge.

.Diagram 10: Process for checking on the surface at the site of work performed by the employee to a position around.

1 Site supervisor

1 Skilled Labour

2 Surveyor

70 point

1 point setting= 10 min70 point x 10 min.= 700min.700min / 2 theodelite=350 min.350min/60 min= 6 hour @ 1 day

1 days

NO OPERATION METHOD DIAGRAM PLANT/ MANPOWER

QUANTITY OUTPUT DURATION

32. Place the precast beam Precast beam will place at the

working area by crane and hung by chain.

In this situation about 4 labour need to hold the beam to make sure the beam is place according to point marked.

Diagram : labour hung the chain to crane

-2 crane

-2 operator crane -1 labour setting out (skilles lobour)

-3 labour setting out (unskill labour)

69 no/ ground beam

1 crane = 5 nos/hr2 crane = 10nos/hr10nos x 8hr=80nos @ 1 days

1 day



33Connect precast beam to precast beam

After the beam has arranged according to size, selected labor will drill the dole to make connection from one beam to another beam. In this construction, they used the threaded and swaged reinforcement.Three bolt usually will used grade 4.6,grade 8.8 and bolt type of high strength friction grasp then SBA will put for established between precast beam to precast beam. Diagram 6: precast beam was

arrange by folloeing the size

Diagram 7: the detail connection between 2 precast beam

-1 crane

-Gerudi Konkrit

-Achor bolt

-SBA

-2 installer connection

-2 unskilled labour

69 no/ ground beam

-1 installer skilled= 20 minute/ nos- 69nos X 20 minute/nos= 1380 minute.-1380 minute/ 2 installer= 690 minute- 690 minute/60 minute =11.5 hour @ 2 day

2 day



34

Second :Install the ground slab precast

Carry the precast slab

Precast slab then will carried by crane that being look by four labour to make sure that the slab is place at right place according to marking.

This slab is arranged on the bam and will joint them together by casting a concrete connection or using bolt and nut.

.

Diagram 8: the crane carry the pieces of slab precast

1Crane 1 operator

3 installer

8mx8m / pieces

50no/ slab precast.

-1 crane=4nos/hr

-1day=8hour

-4nos x 8hr=32nos/day

50nos= 2 days

2 days



35 Install precast slab at ground floor and install slab connection

Casting of slab is arranged on the ground beam using the concrete mix on site.This installation for ground slab involved many labours as the slab is heavy to place and also need to place in right position in order to prevent from any mistake happened.

Diagram 9: arrangement the precast slab following the size precast slab.

-10 installer

-4 skilled labour

- 2 crane

300nos/connection precast slab

per floor

1 hr = 25 pieces25 x 8 hr = 200 @ 2 days

2 days



36Third :Install the column precast

Setting-out on the surface of the work site.

-Seting out process is done by supervisor incharge in site.- This process is done to make

sure the point for pillar not erected from original point.

- This will minimize mistake during installation of column.

- Supervisor incharge need to make sure the height og starter bar is 800mm from floor level. Diagram 10: Process for

checking on the surface at the site of work performed by the employee to a position around.

1 Site supervisor

1 Skilled Labour

1 Surveyor

140 nos column

1 column/0.17hrs = 5.8 @ 6 column/hrs

140 column/ 6column/hrs = 23 hrs

23 hrs / 8 hrs = 2.8 day @ 3 day

3 day



37 Placement of Pre-cast column to starter bar.

Starter bar for each column is install before place the ground slab

The height of starter bar for each column is according to point marked before this and the height of each column cracker must use dumpy level to get the high according the cracker size.

Precast column is placed inside the starter bar by using the crane and guide by labour in charge.

Diagram 11: the starter bar

-Crane mobile-4skilled labour-8 unskilled labour.

120pcs/floor. -1 labour 0.6pcs/hr

-12 labour (12x 0.6 pcs) = 7 pcs/hr

-1 day (8hr x 7pcs/hr) = 56 pcs/days 120pcs / 56 pcs = 2.2@ 3 day

3 day



38 Column installation.

The starter bar that installed before this at height 800mm from floor level will paired with column that hung by crane

At the bottom of the column, there are holes provide to easier paired the column with starter bar.

Then worker involved will connect the starter bar with the column to assure the column is insert right and in right position.

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.

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-3 mobile crane

-3 Site supervisor

-3 Operator

-6 installer(skilled Labour)

-12 labour (unskilled labour)

140 nos column

-3 crane = 3 column/hr

-140 column /3/hr = 46 hour

-47/8hour=5.8 @ 6 days

6 day



4. As this method of construction use precast column, so the bottom of the column are provided with hole and every connection between column and starter bar are using bolt and nut to connect to slab. As this column made at factory, the diameter for each hole is 50mm.

Supervisor involved need to check regularly on this connection as to prevent from failure.

Diagram 14: detail drawing connection between column and starter bar, using bolt and nut to connect to the

slab.



Probe installation to detain column from offset

Attach probe with bolt and nut from column to floor

Probe is attach to make sure the connection between slab to slab is strong enough.

Diagram 15: to install probe.

-1 site supervisor- 3 settiing labour

-

1 column = 2 pcs

1 floor =140 column

140 column x 2 pcs

= 280 pcs probe

-1 labour = 4pcs/hr

-4 labour = 16 pcs/hr

-1 day = 8 hour

-16 pcs x 8 hr = 128pcs / day

-280 pcs / 128 pcs = 2.2 day @ 3 day

3 days



41 Check level on column.

Supervisor incharge will check column level using theodolite to make sure the column installed in straight position.

Diagram 16: to setting and adjust the vertical of column

-Thedolite

-1 Site supervisor

-1 site Surveyor

140 nos column

1 column / 0.167 hrs =5.98 @ 6 column/ hrs

140 column / 6 column/hrs = 23 hrs

23hrs / 8hrs = 2.9 day @ 3 day

3 day



42 Shim pad at bottom of column

As the height of column are in different height, shim pad are placed to make sure column in same height.

Place the shim pad to the bottom of column and placed it before joint column with starter bar.

-1 Site supervisor

-4 unskilled worker to put the shim pads

140 nos column

1 column / 0.25 hrs = 4 column/hrs140 column / 4 column/hrs =35 hrs

35 hrs / 8 hrs = 4.4 @ 5 day

5 day



44 Strut and grouting to column

Place strut at the corner of column and the grout is then poured into the holes that were prepared during casting for the insertion of the starter bar.

Diagram 18: Install the strut at the column,

Diagram 19

-1 Site supervisor

-4 installer

140 nos column

1 column / 0.25 hrs = 4 column/hrs

140 column / 5 column/hrs =28 hrs28hrs / 8 hrs = 3.5 @ 4 day

4 day



Checked the vertically in column.

Spirit level will used to check the vertically in column so that next work can be done. Strut that placed earlier will be open by workers.

Diagram 20: to get vertical on column

-1 spirit level

-1 Site supervisor

-3 installer

140 nos column

1 column / 0.083 hrs =12 column/hrs140 column / 12 column/hrs = 11.6 hrs

11.6 hrs / 8 hrs = 1.45day@2 day

2 day



46

Fourth :Install the precast beam at upper floor.

Carry the precast beam

Precast beam will carried by crane and held for 1st floor with workers standby in their position to setup the beam to column.

The position should be in parallel to column to easier to connect from beam hole to column holes.

Diagram 21: Precast Beam position in the transverse and

parallel to the columns and easy for the work of inserting holes into

the steel beam columns.

-1 mobile crane

-2 unskilled labour

-1 skilled labour

69 nos /floor -1 beam / 0.42 hrs = 2.38 @ 2 beam/hrs

-69 beam / 2 beam/hrs = 34.5 hrs

-34.5 hrs / 8 hrs = 4.4 day-5 day / 2 labour = 2.5 day @ 3 days

3 day



47 Beam

installation to the column in 1st floor.

Anchor bolt sot in into beam and column which is beam and column functioning as connectivity by using a drill to insert anchor bolt. Before insert the anchor bolt and nut. After that, anchor bolt and nut is planted into beam and column and tightened using a spanner.

-Anchor bolt an nut

-SpannerDrill

-3 mobile crane

-4 unskilled labour

-2 skilled labour

-1 site supervisor

-(1 = 4 labour)

140 nos /floor

-1beam / 0.17 hrs = 5.8 @ 6 beam/hrs

-140 beam / 6 beam/hrs = 23.3 hrs

-23.3 hrs / 8 hrs = 2.9 day @ 3

3 day



48 Grouting beam and column.

Workers will put grounting to beam and column to make sure the connection more strength.

Diagram 24 : the labour ready to put grouting to beam for connect to column to established the connection

-1 site supervisor

-4 unskilled labour

-1 labour = 0.2 m³

-4 labour = 0.8 m³

-1 day = 8hr0.8 x 8 hr = 6.4 m³ /day

2 m³ / 6.4 m³/day = 0.3125= 1 day

1 day

Diagram 24: the labour ready to put grouting to beam for connect to column to established the connection



49

Firth:Install the precast hollow slab at upper floor.

Carry the precast hollow slab to upper floor

Using mobile crane, place the pre-cast hollow core floor slab o top of the beam as shown on the diagram and guided with labour.

Diagram 25: Labours are adjusting the hoist for placing the hollowcore slab.

-2 mobile crane

-2 crane operator

-2 skilled worker

-3 unskilled

-120 nos hollow

slab/floor

Labour Constant

1 labour = 0.6pcs/hr

7 labour = 7 x 0.6 pcs = 4.2 pcs/hr

1 day = 8 hr

8hr x 4.2pcs/hr = 33.6pcs/day

120 pcs / 33.6pcs/day = = 3.6 @ days

4 day

IBS METHOD OF CONSTRUCTION

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