Ballast Nedam Breaking new ground together Introduction Serkan - - PowerPoint PPT Presentation

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Jun 01, 2023 771 likes •1k views

Ballast Nedam Breaking new ground together Introduction Serkan Sen BIM Specialist Istanbul Technical University Architecture 2006 Cooltower 150 meters 50 residential levels 270 apartments Completion 2021 Weekly Site Meetings

SLIDE 1

Breaking new ground together

Ballast Nedam

SLIDE 2

Introduction

Serkan Sen BIM Specialist Istanbul Technical University Architecture 2006

SLIDE 3

Cooltower

150 meters…

Completion 2021… 270 apartments… 50 residential levels…

SLIDE 4

Weekly Site Meetings

SLIDE 5

Principal Planning

Tender Planning has been done to finish construction

f one quarter in 4 days…

Worklabor planning Day Floor Part 1 Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Actions on the 10th floor needed to execute the 11e floor. Working level Outside Elevator Tower crane needed Quantities (±) Personeel uren => 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 (The 10th floor is pouring de day before) 2 1 Surveying / Taking measurements On de 10th Floor x x 127,50 m2 1 3 1 Placed suspension anchor points windshields Under 10th floor yes x 10 ps 2 4 1 Climbing Windshields one floor level upwards Till the 11th floor (protection level 7 -10) x x 2 ps 2 5 1 Remove the outside edge formwork Edges of the 10th Floor x x 18,60 m2 1 6 1 Remove the floor cut-out formwork The 10th Floor x x 8,00 m1 1 7 1 Remove the floor formwork at the outside edge Edges under the 10th floor x x 127,50 m2 (partial) 2 8 1 Vertical transport material floor formwork From under the 9th floor yes x 127,50 m2 (investment is 6 sets, 2 sets is still under de 9th floor) 2 9 1 Placed Prefabricated columns (including grouting) On the 10th Floor x yes 5 ps 2 10 1 Placed Prefabricated sandwich elements Edges of the 10th Floor x yes 3 ps 2 11 1-2 Execution floor formwork (Panels, props and shoring) For the 11th floor x x 127,50 m2 5 12 2 Placed anchor rods for Prefabricated balconies For the 9th Floor balcony x x 5 ps 2 13 2 Placed support tower Prefabricated balconies On the 10th Floor balcony yes x 2 ps 2 14 2 Placed Prefabricated balconies For the 11th floor x yes 2 ps 2 15 2 Bend out reinforcement (core connection with 11th floor) Connection 11th Floor with outer core x x 14,00 m1 1 16 2 Placed the outside edge fromwork Edges of the 11th Floor x x 18,60 m1 2 17 2 Placed the floor cut-out fromwork Edges of the 11th Floor x x 8,00 m1 2 18 2 Placed under reinforcement (prefabricated wire-mesh) For the 11th floor x yes 1832 kg 5 19 3 Facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 20 3 Installation facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 21 4 Placed upper reinforcement (prefabricated wire-mesh) The 11th floor x yes 1832 kg 5 22 4 Placed expanded metal for pouring edges The 11th floor x x 28,80 m1 1 23 4 Pouring Floor slab (with concrete crane distributor) The 11th floor x x 30,63 m3 3 24 4 Partially floor under the columns (high strength concrete) The 11th floor x yes 1,25 m3 3 Floor Part 2 Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Actions on the 10th floor needed to execute the 11e floor. Working level Outside Elevator Tower crane needed Quantities (±) Personeel uren => 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 (The 10th floor is pouring de day before) 2 1 Surveying / Taking measurements On de 10th Floor x x 127,50 m2 1 3 1 Placed suspension anchor points windshields Under 10th floor yes x 10 ps 2 4 1 Climbing Windshields one floor level upwards Till the 11th floor (protection level 7 -10) x x 2 ps 2 5 1 Remove the outside edge formwork Edges of the 10th Floor x x 18,60 m2 1 6 1 Remove the floor cut-out formwork The 10th Floor x x 8,00 m1 1 7 1 Remove the floor formwork at the outside edge Edges under the 10th floor x x 127,50 m2 (partial) 2 8 1 Vertical transport material floor formwork From under the 9th floor yes x 127,50 m2 (investment is 6 sets, 2 sets is still under de 9th floor) 2 9 1 Placed Prefabricated columns (including grouting) On the 10th Floor x yes 5 ps 2 10 1 Placed Prefabricated sandwich elements Edges of the 10th Floor x yes 3 ps 2 11 1-2 Execution floor formwork (Panels, props and shoring) For the 11th floor x x 127,50 m2 5 12 2 Placed anchor rods for Prefabricated balconies For the 9th Floor balcony x x 5 ps 2 13 2 Placed support tower Prefabricated balconies On the 10th Floor balcony yes x 2 ps 2 14 2 Placed Prefabricated balconies For the 11th floor x yes 2 ps 2 15 2 Bend out reinforcement (core connection with 11th floor) Connection 11th Floor with outer core x x 14,00 m1 1 16 2 Placed the outside edge fromwork Edges of the 11th Floor x x 18,60 m1 2 17 2 Placed the floor cut-out fromwork Edges of the 11th Floor x x 8,00 m1 2 18 2 Placed under reinforcement (prefabricated wire-mesh) For the 11th floor x yes 1832 kg 5 19 3 Facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 20 3 Installation facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 21 4 Placed upper reinforcement (prefabricated wire-mesh) The 11th floor x yes 1832 kg 5 22 4 Placed expanded metal for pouring edges The 11th floor x x 28,80 m1 1 23 4 Pouring Floor slab (with concrete crane distributor) The 11th floor x x 30,63 m3 3 24 4 Partially floor under the columns (high strength concrete) The 11th floor x yes 1,25 m3 3 Floor Part 3 Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Actions on the 10th floor needed to execute the 11e floor. Working level Outside Elevator Tower crane needed Quantities (±) Personeel uren => 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 (The 10th floor is pouring de day before) 2 1 Surveying / Taking measurements On de 10th Floor x x 127,50 m2 1 3 1 Placed suspension anchor points windshields Under 10th floor yes x 10 ps 2 4 1 Climbing Windshields one floor level upwards Till the 11th floor (protection level 7 -10) x x 2 ps 2 5 1 Remove the outside edge formwork Edges of the 10th Floor x x 18,60 m2 1 6 1 Remove the floor cut-out formwork The 10th Floor x x 8,00 m1 1 7 1 Remove the floor formwork at the outside edge Edges under the 10th floor x x 127,50 m2 (partial) 2 8 1 Vertical transport material floor formwork From under the 9th floor yes x 127,50 m2 (investment is 6 sets, 2 sets is still under de 9th floor) 2 9 1 Placed Prefabricated columns (including grouting) On the 10th Floor x yes 5 ps 2 10 1 Placed Prefabricated sandwich elements Edges of the 10th Floor x yes 3 ps 2 11 1-2 Execution floor formwork (Panels, props and shoring) For the 11th floor x x 127,50 m2 5 12 2 Placed anchor rods for Prefabricated balconies For the 9th Floor balcony x x 5 ps 2 13 2 Placed support tower Prefabricated balconies On the 10th Floor balcony yes x 2 ps 2 14 2 Placed Prefabricated balconies For the 11th floor x yes 2 ps 2 15 2 Bend out reinforcement (core connection with 11th floor) Connection 11th Floor with outer core x x 14,00 m1 1 16 2 Placed the outside edge fromwork Edges of the 11th Floor x x 18,60 m1 2 17 2 Placed the floor cut-out fromwork Edges of the 11th Floor x x 8,00 m1 2 18 2 Placed under reinforcement (prefabricated wire-mesh) For the 11th floor x yes 1832 kg 5 19 3 Facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 20 3 Installation facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 21 4 Placed upper reinforcement (prefabricated wire-mesh) The 11th floor x yes 1832 kg 5 22 4 Placed expanded metal for pouring edges The 11th floor x x 28,80 m1 1 23 4 Pouring Floor slab (with concrete crane distributor) The 11th floor x x 30,63 m3 3 24 4 Partially floor under the columns (high strength concrete) The 11th floor x yes 1,25 m3 3 Deel 2 Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Actions on the 10th floor needed to execute the 11e floor. Working level Outside Elevator Tower crane needed Quantities (±) Personeel uren => 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 (The 10th floor is pouring de day before) 2 1 Surveying / Taking measurements On de 10th Floor x x 127,50 m2 1 3 1 Placed suspension anchor points windshields Under 10th floor yes x 10 ps 2 4 1 Climbing Windshields one floor level upwards Till the 11th floor (protection level 7 -10) x x 2 ps 2 5 1 Remove the outside edge formwork Edges of the 10th Floor x x 18,60 m2 1 6 1 Remove the floor cut-out formwork The 10th Floor x x 8,00 m1 1 7 1 Remove the floor formwork at the outside edge Edges under the 10th floor x x 127,50 m2 (partial) 2 8 1 Vertical transport material floor formwork From under the 9th floor yes x 127,50 m2 (investment is 6 sets, 2 sets is still under de 9th floor) 2 9 1 Placed Prefabricated columns (including grouting) On the 10th Floor x yes 5 ps 2 10 1 Placed Prefabricated sandwich elements Edges of the 10th Floor x yes 3 ps 2 11 1-2 Execution floor formwork (Panels, props and shoring) For the 11th floor x x 127,50 m2 5 12 2 Placed anchor rods for Prefabricated balconies For the 9th Floor balcony x x 5 ps 2 13 2 Placed support tower Prefabricated balconies On the 10th Floor balcony yes x 2 ps 2 14 2 Placed Prefabricated balconies For the 11th floor x yes 2 ps 2 15 2 Bend out reinforcement (core connection with 11th floor) Connection 11th Floor with outer core x x 14,00 m1 1 16 2 Placed the outside edge fromwork Edges of the 11th Floor x x 18,60 m1 2 17 2 Placed the floor cut-out fromwork Edges of the 11th Floor x x 8,00 m1 2 18 2 Placed under reinforcement (prefabricated wire-mesh) For the 11th floor x yes 1832 kg 5 19 3 Facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 20 3 Installation facilities embed in the concrete The 11th floor x yes Estimated 4,0 uur 2 21 4 Placed upper reinforcement (prefabricated wire-mesh) The 11th floor x yes 1832 kg 5 22 4 Placed expanded metal for pouring edges The 11th floor x x 28,80 m1 1 23 4 Pouring Floor slab (with concrete crane distributor) The 11th floor x x 30,63 m3 3 24 4 Partially floor under the columns (high strength concrete) The 11th floor x yes 1,25 m3 3 Total personal theoretically 8 3 2 7 13 9 7 7 17 9 7 12 17 10 10 15 9 7 8 8 4 1 3 8 1 3 3

QUARTER 1 QUARTER 2 QUARTER 4 QUARTER 3

DAY 1 DAY 2 DAY 3 DAY 4 DAY 5 DAY 6 DAY 7 DAY 8 QUARTER 1 QUARTER 2 QUARTER 3 QUARTER 4

SLIDE 6

Principal Plan

Elevator location Actions

SLIDE 7

Principal Section

Windshield covers 4 floors

100% PROPPING 100% PROPPING 50% PROPPING 50% PROPPING

Propping requirement

SLIDE 8

SLIDE 9

Analysing Pattern / Creating Storyboard

SLIDE 10

LIFT

LEVEL 7 LEVEL 8 LEVEL 9 LEVEL 10 LEVEL 11 LEVEL 12 QUARTER 1 QUARTER 2 QUARTER 4 QUARTER 3

1 SET 1 SET 1 SET 1 SET 1 SET 1 SET

Draft Animation

SLIDE 11

SLIDE 12

Vertical & Horizantal Movements Pattern

127,5 27,5 126 27,5 27,5 127,5 127,5 127,5 127,5 127,5 127,5 26,6 127,5 127,5 26,6 26,6 127,5 63 27,5 126 27,5 27,5 126 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 27,5 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 127,5 127,5 127,5 127,5 127,5 127,5 127,5 127,5 26,6 127,5 127,5 26,6 26,6 127,5 127,5 26,6 26,6 127,5 26,6 26,6 127,5 26,6 26,6 26,6 26,6 126 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 126 27,5 126 63 63 63 63 63 63 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 126 27,5 27,5 126 63 27,5 63 63 63 127,5 127,5 127,5 127,5 127,5 127,5 26,6 127,5 127,5 26,6 26,6 127,5 127,5 26,6 26,6 127,5 127,5 26,6 26,6 26,6 26,6 127,5 26,6 26,6 26,6 26,6 26,6 26,6 26,6 26,6 26,6 63 126 63 63 63 63 63 63 63 63 63 63 63 63 126 27,5 27,5 126 126 27,5 126 126 126 63 63 63 63 63 63 63 63 127,5 26,6 26,6 127,5 127,5 26,6 26,6 127,5 127,5 26,6 26,6 26,6 26,6 26,6 26,6 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63 63

3 TIMES 6 TIMES 6 TIMES 6 TIMES 3 TIMES

WINDSHIELD WINDSHIELD

Day 8 Day 9 Day 12 Day 13 Day 14 Day 10 Day 11 765 638 765 765 765 765 765

MOVE 3 MOVE 4 MOVE 1 MOVE 2 MOVE 3 MOVE 4 MOVE 1 MOVE 2

SLIDE 13

Vertical & Horizantal Movements Schedule

4D Code Items Lifted Time (min) Lvls 3D Path Name Path MOVE 1 M1 01 a PANEL - Floor 32 Lvl 08 Q3 Q3 to ELV M1 01 b PANEL - Floor 8 Lvl 08-10 2 LIFT UP M1 01 c PANEL - Floor 32 Lvl 10 Q1 ELV to Q1 M1 01 d PANEL - Floor 8 Lvl 08-10 2 LIFT DOWN M1 02 a PANEL - Outside + cutout 32 Lvl 08 Q3 Q3 to ELV M1 02 b PANEL - Outside + cutout 8 Lvl 08-10 2 LIFT UP M1 02 c PANEL - Outside + cutout 32 Lvl 10 Q1 ELV to Q1 M1 02 d PANEL - Outside + cutout 8 Lvl 08-10 2 LIFT DOWN M1 03 a PROPS 32 Lvl 08 Q3 Q3 to ELV M1 03 b PROPS 8 Lvl 08-10 2 LIFT UP M1 03 c PROPS 32 Lvl 10 Q1 ELV to Q1 M1 03 d PROPS 8 Lvl 08-10 2 LIFT DOWN 240 MOVE 2 M2 01 a PANEL - Floor 32 Lvl 08 Q4 Q4 to ELV M2 01 b PANEL - Floor 8 Lvl 08-10 2 LIFT UP M2 01 c PANEL - Floor 32 Lvl 10 Q2 ELV to Q2 M2 01 d PANEL - Floor 8 Lvl 08-10 2 LIFT DOWN M2 02 a PANEL - Outside + cutout 32 Lvl 08 Q4 Q4 to ELV M2 02 b PANEL - Outside + cutout 8 Lvl 08-10 2 LIFT UP M2 02 c PANEL - Outside + cutout 32 Lvl 10 Q2 ELV to Q2 M2 02 d PANEL - Outside + cutout 8 Lvl 08-10 2 LIFT DOWN M2 03 a PROPS 32 Lvl 08 Q4 Q4 to ELV M2 03 b PROPS 8 Lvl 08-10 2 LIFT UP M2 03 c PROPS 32 Lvl 10 Q2 ELV to Q2 M2 03 d PROPS 8 Lvl 08-10 2 LIFT DOWN M2 04 a PROPS 32 Lvl 08 Q4 Q4 to ELV M2 04 b PROPS 8 Lvl 08-10 2 LIFT UP M2 04 c PROPS 32 Lvl 10 Q2 ELV to Q2 M2 04 d PROPS 8 Lvl 08-10 2 LIFT DOWN M2 05 a PANEL - Innercore + Balcony support 32 Lvl 08 Q4 Q4 to ELV M2 05 b PANEL - Innercore + Balcony support 8 Lvl 08-10 2 LIFT UP M2 05 c PANEL - Innercore + Balcony support 32 Lvl 10 Q2 ELV to Q2 M2 05 d PANEL - Innercore + Balcony support 8 Lvl 08-10 2 LIFT DOWN M2 06 a %50 PROPS + tripods + shoring 32 Lvl 08 Q4 Q4 to ELV M2 06 b %50 PROPS + tripods + shoring 8 Lvl 08-10 2 LIFT UP M2 06 c %50 PROPS + tripods + shoring 32 Lvl 10 Q2 ELV to Q2 M2 06 d %50 PROPS + tripods + shoring 8 Lvl 08-10 2 LIFT DOWN

4D Code Items Lifted Time (min) Lvls 3D Path Name Path MOVE 3 M3 01 a PANEL - Floor 32 Lvl 09 Q1 Q1 to ELV M3 01 b PANEL - Floor 8 Lvl 09-10 1 LIFT UP M3 01 c PANEL - Floor 32 Lvl 10 Q3 ELV to Q3 M3 01 d PANEL - Floor 8 Lvl 09-10 1 LIFT DOWN M3 02 a PANEL - Outside + cutout 32 Lvl 09 Q1 Q1 to ELV M3 02 b PANEL - Outside + cutout 8 Lvl 09-10 1 LIFT UP M3 02 c PANEL - Outside + cutout 32 Lvl 10 Q3 ELV to Q3 M3 02 d PANEL - Outside + cutout 8 Lvl 09-10 1 LIFT DOWN M3 03 a PROPS 32 Lvl 09 Q1 Q1 to ELV M3 03 b PROPS 8 Lvl 09-10 1 LIFT UP M3 03 c PROPS 32 Lvl 10 Q3 ELV to Q3 M3 03 d PROPS 8 Lvl 09-10 1 LIFT DOWN M3 04 a PROPS 32 Lvl 09 Q1 Q1 to ELV M3 04 b PROPS 8 Lvl 09-10 1 LIFT UP M3 04 c PROPS 32 Lvl 10 Q3 ELV to Q3 M3 04 d PROPS 8 Lvl 09-10 1 LIFT DOWN M3 05 a PANEL - Innercore + Balcony support 32 Lvl 09 Q1 Q1 to ELV M3 05 b PANEL - Innercore + Balcony support 8 Lvl 09-10 1 LIFT UP M3 05 c PANEL - Innercore + Balcony support 32 Lvl 10 Q3 ELV to Q3 M3 05 d PANEL - Innercore + Balcony support 8 Lvl 09-10 1 LIFT DOWN M3 06 a %50 PROPS + tripods + shoring 32 Lvl 09 Q1 Q1 to ELV M3 06 b %50 PROPS + tripods + shoring 8 Lvl 09-10 1 LIFT UP M3 06 c %50 PROPS + tripods + shoring 32 Lvl 10 Q3 ELV to Q3 M3 06 d %50 PROPS + tripods + shoring 8 Lvl 09-10 1 LIFT DOWN 480 MOVE 4 M4 01 a PANEL - Floor 32 Lvl 09 Q2 Q2 to ELV M4 01 b PANEL - Floor 8 Lvl 09-10 1 LIFT UP M4 01 c PANEL - Floor 32 Lvl 10 Q4 ELV to Q4 M4 01 d PANEL - Floor 8 Lvl 09-10 1 LIFT DOWN M4 02 a PANEL - Outside + cutout 32 Lvl 09 Q2 Q2 to ELV M4 02 b PANEL - Outside + cutout 8 Lvl 09-10 1 LIFT UP M4 02 c PANEL - Outside + cutout 32 Lvl 10 Q4 ELV to Q4 M4 02 d PANEL - Outside + cutout 8 Lvl 09-10 1 LIFT DOWN M4 03 a PROPS 32 Lvl 09 Q2 Q2 to ELV M4 03 b PROPS 8 Lvl 09-10 1 LIFT UP M4 03 c PROPS 32 Lvl 10 Q4 ELV to Q4 M4 03 d PROPS 8 Lvl 09-10 1 LIFT DOWN M4 04 a PROPS 32 Lvl 09 Q2 Q2 to ELV M4 04 b PROPS 8 Lvl 09-10 1 LIFT UP M4 04 c PROPS 32 Lvl 10 Q4 ELV to Q4 M4 04 d PROPS 8 Lvl 09-10 1 LIFT DOWN M4 05 a PANEL - Innercore + Balcony support 32 Lvl 09 Q2 Q2 to ELV M4 05 b PANEL - Innercore + Balcony support 8 Lvl 09-10 1 LIFT UP M4 05 c PANEL - Innercore + Balcony support 32 Lvl 10 Q4 ELV to Q4 M4 05 d PANEL - Innercore + Balcony support 8 Lvl 09-10 1 LIFT DOWN M4 06 a %50 PROPS + tripods + shoring 32 Lvl 09 Q2 Q2 to ELV M4 06 b %50 PROPS + tripods + shoring 8 Lvl 09-10 1 LIFT UP M4 06 c %50 PROPS + tripods + shoring 32 Lvl 10 Q4 ELV to Q4 M4 06 d %50 PROPS + tripods + shoring 8 Lvl 09-10 1 LIFT DOWN 480

M1 01 a PANEL - Floor 32 Lvl 08 Q3 Q3 to ELV M1 01 b PANEL - Floor 8 Lvl 08-10 2 LIFT UP M1 01 c PANEL - Floor 32 Lvl 10 Q1 ELV to Q1 M1 01 d PANEL - Floor 8 Lvl 08-10 2 LIFT DOWN M1 02 a PANEL - Outside + cutout 32 Lvl 08 Q3 Q3 to ELV M1 02 b PANEL - Outside + cutout 8 Lvl 08-10 2 LIFT UP M1 02 c PANEL - Outside + cutout 32 Lvl 10 Q1 ELV to Q1 M1 02 d PANEL - Outside + cutout 8 Lvl 08-10 2 LIFT DOWN M1 03 a PROPS 32 Lvl 08 Q3 Q3 to ELV M1 03 b PROPS 8 Lvl 08-10 2 LIFT UP M1 03 c PROPS 32 Lvl 10 Q1 ELV to Q1 M1 03 d PROPS 8 Lvl 08-10 2 LIFT DOWN Path 4D Code Items Lifted Time (min) Lvls 3D Path Name MOVE 1

SLIDE 14

SLIDE 15

LIFT

0,5 SET 0,5 SET 0,5 SET 0,5 SET 0,5 SET 0,5 SET

LEVEL 7 LEVEL 8 LEVEL 9 LEVEL 10 LEVEL 11 LEVEL 12

1 SET 1 SET 1 SET 1 SET 1 SET 1 SET

0,5 SET 0,5 SET 0,5 SET 0,5 SET 0,5 SET 0,5 SET

After elevator moves up with the windshield %50 propping stays unlifted…

Analysing Pattern

SLIDE 16

SLIDE 17

1st Project 2nd Project 3rd Project nth Project

SLIDE 18

SLIDE 19

SLIDE 20

Thank you...

SLIDE 21