East Hall renovation East Hall Renovation Civil Engineering

East Hall renovation East Hall Renovation : Civil Engineering works Stewart Mcilwraith – Charly Gasnier (SMB-SE) B. 157 - 28/04/2017 S. Mcilwraith – C. Gasnier

Contents 1. 2. 3. 4. 5. 6. CE works overview C&S review response Constraints Advancement on objectives Budget Conclusions B. 157 - 28/04/2017 SMB-SE

1. CE works overview 1 2 • Work zone 1: • 260 m 2 of glazing • 4600 m 2 of suspended ceiling • Roof waterproofing verification • Work zone 2: B. 157 - 28/04/2017 SMB-SE • 1250 m 2 of glazing • 1200 m 2 of Eternit façade cladding

1. CE works overview Glazing to replace 250 m 2 Ceiling panels to replace 4600 m 2 Roof fixations & gutter integrity checks Suspended scaffolding (~5000 m 2) B. 157 - 28/04/2017 SMB-SE

1. CE works overview Fibre-cement cladding to be replaced (1200 m 2) Glazing to replace(1250 m 2) Note: Possibility to reduce mid-level glazing to be investigated B. 157 - 28/04/2017 SMB-SE

2. 1 Multicriteria analysis Baseline • 2017 (Q 4) to 2019 (Q 1) Alternative : • Facades during 2018 • Under roof works moved after LS 2 B. 157 - 28/04/2017 SMB-SE

2. 1 Multicriteria analysis BASELINE Advantages Disadvantages ALTERNATIVE -Project objectives met 2018: • Thermal insulation improved • Unsafe asbestos removed from building • Building rendered waterproof • Optimisation of natural light -Duration of CE works minimised -Asbestos legislation known -Smaller space needed for worksite installations -Coactivity with Physics (mitigated through zoned planning) -Larger space needed for worksite installations (mitigated through controlled delivery schedule) -Project objectives met (2021? ) -Coactivity with Physics (possibility to mitigate? ) -Risk of asbestos legislation evolution -Cost increase (site mobilisation x 2, demobilisation x 2, etc. ) -Space for worksite installations required twice B. 157 - 28/04/2017 SMB-SE

2. 2 CE project planning B. 157 - 28/04/2017 SMB-SE

3. 1 Worksite Planning and coordination 2 1 Sh ield ed Are a Sh ield 5 6 3 ed Are a 4 Suspended scaffoldings zoned planning Additional safety measures can be taken above sensitive area Shielded area (no co-activity with Physics) Sensitive area (co-activity with Physics) B. 157 - 28/04/2017 SMB-SE

3. 1 Worksite Planning and coordination • Impact on Physics minimised: Optimisation of scaffolding installation and removal above sensitive zones during YETS/LS 2. Co-activities with Physics to coordinate B. 157 - 28/04/2017 SMB-SE

3. 2 Prioritised site zones 750 m 2 available on North Side 750 m 2 available on South Side • One entrance (North or South) to storage building between 156/157 will remain accessible at all time • No superposition of site installations (North/South) • 10 m passage for trucks surrounding south site installations These zones are prioritised but additional space may be required B. 157 - 28/04/2017 SMB-SE

3. 3 Constraints • Facade services inventory established, confirmation required that items will be removed prior to CE works. B. 157 - 28/04/2017 SMB-SE

4. Advancement on objectives • Window optimisation study: Reduction of high windows on south façade – reducing afternoon direct sunlight on CLOUD • False ceiling/Roof - Parallel analyses of: • Ceiling only option (false ceiling panel removal and replacement and roof sheet and gutter waterproofing integrity check) • Roof + Ceiling option (false ceiling panel and roof removal and replacement with single insulated exterior roof) Roof + Only option: Possible advantage to planning and cost neutrality (TBC through architectural studies) • Site optimisation: EA delivery schedule on Wednesday taken into account for site functioning. B. 157 - 28/04/2017 SMB-SE

5. Budget • Total CE budget following SMB preliminary study (no modification since C&S review 08/12/16): 2. 48 MCHF (+/- 30%) Available budget (update 06/04/17): 2. 24 MCHF • Architectural study ongoing: Preliminary design estimation (+/- 20%) : 06/06/17 Tender design estimation (+/- 10%) : xx/08/17 B. 157 - 28/04/2017 SMB-SE

6. Conclusions • From a technical point of view, executing CE works before LS 2 is advantageous • CE advancing in line with Baseline Schedule No contingency in planning until FC 12/17 • Co-activity with Physics minimised through refined zonal planning • Disruption to parking and building access reduced by optimising delivery schedules • Obsolete façade services must be removed prior to CE works. • CE works optimisation studies underway: Cost estimate Planning Site installations Building envelope proposals • Current Cost estimate: 2. 48 MCHF. Refined estimate in the coming months. B. 157 - 28/04/2017 SMB-SE

Questions B. 157 - 28/04/2017 SMB-SE

B 119 B. 157 - 28/04/2017 SMB-SE

B 119 B. 157 - 28/04/2017 SMB-SE

B 119 B. 157 - 28/04/2017 SMB-SE

B 119 B. 157 - 28/04/2017 SMB-SE

Budget & resources Budget global = CHF 2. 4 M (-20%/+25%) • Resources = 2 FTE’s (1. 5 staff / VIA + 0. 5 FSU) • B. 157 - 28/04/2017 SMB-SE