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OBSERVATION 3: WEEK 1 FEB 2018

PROLOGUE

The East End Transformation Project is the largest capital project ever undertaken on the Danforth Campus. It will also be the most disruptive. The following is a terrain map and schematic development map helping one locate the extent of the project and understand its various components respectively.

THE SETUP

The following plan depicts the location of the cameras mounted on permanent structures along the periphery of the site. These permanent structures are the Brookings Hall, Green Hall and Hillman Hall respectively. The daily feed from these cameras are employed to track and monitor construction progress.

PROGRESS DOCUMENTATION

The following section depicts the observations undertaken at the construction site with a focus on project progress, construction activities, materials, equipment, workers, and site conditions. The order of photographic documentation is the perspective from Brookings Hall, Green Hall and Hillman Hall respectively. Each unique photograph is followed by a comparative to depict progress compared to the preceding work week.

This research will be confined to observing the construction progress of the Henry A. and Elvira H. Jubel Hall (3) and the Underground Garage (8) for the 1st week of February 2018.

 

EQUIPMENT MOBILIZED: Tower Crane (#3), Truck-Mounted Concrete Boom Pump(#2), Linkbelt 8090 Rough Terrain Crane(#3),  CAT 320D Hydraulic Excavator(#1), CAT 305.5E2 CR Mini Hydraulic Excavator(#2), Bobcat Compact Track Loader(#3), Telehandler(#4), CAT CP44 Vibratory Soil Compactor(#2), Articulating Boom Lift(#3) etc.

 

CONSTRUCTION ACTIVITIES: 

  • Underground Garage :

  1. North End: Sub-grade preparation & concrete pour;

  2. North End: Retaining Wall construction (Waterproofing);

  3. South End: Level 0 Ramp construction (RCC columns);

  4. South End: Level 1 Slab formwork & rebar assembly (Post-tensioned RCC slab);

  5. East End: Level 1 Elevator Shaft formwork (RCC Shear wall)

 

  • Jubel Hall :

  1. North End: Level 3 RCC Shear Wall + Column construction;

  2. South End: Level 3 RCC Slab construction;

  3. South End: Level 3 RCC Wall construction;

  4. West End: Level 3 RCC Wall construction;

  5. West End: Site periphery backfill and compaction;

  6. East End: Level 3 RCC Column construction.

 

  • Some concrete placement activities are observed even when the ambient temperature is 23 deg. F. This is strange as this scenario falls under the "cold weather" concrete condition as per ACI 306 and hence additional precautions in the form of insulation blankets, heated mix or high air-entrainment might be warranted to ensure concrete strength development and quality concrete placement.

  • All labors are found to be wearing PPE and Fall arrestors. Safety Standards for Signs, Signals, Barricades, Trenching, Excavation are observed to be complied with. Also, regularly spaced 20 and 40 Yard waste dumpsters highlight the attention to housekeeping and waste segregation. Safety toolbox meetings were observed and it can be deduced that all construction activities are undertaken in strict compliance with OHSA guidelines. 

  • An elaborate traffic diversion plan, as well as the deployment of flaggers along the entrance and exits of the construction perimeter, highlight the attention towards traffic management and minimizing disruption to the university operations.

 

MANPOWER COUNT: At least 40 labors across Rebar, Concrete, Carpentry (Formwork), Earthwork and Common labor trades were observed to be working on site.

 

CONSTRUCTION MATERIALS: A615 Grade 60 Rebar, Concrete, Engineered Fill, Excavated earth, Waterproofing membrane, System Formwork (Wall panels, struts, H beams, Plywood, Table Forms, Props etc), Post Tension tendons/cable, Geotextile, Vapor barrier, PVC conduits, Electrical Gang box etc.

 

 

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