Precast & Limestone Panels

Harvard Law School



First samples November 2008 (simulated returns)







Second samples November 2008 (fabricated returns)







Third samples (approved simulated returns)

Simulated return


Bottom left Simulated return, second right, third left etc...



Visual Mockup May 5, 2009



BPDL Plant visit May 20, 2009 Alma, Quebec Canada

Panoramic view of storage yard at BPDL

Completed assemblies in storage


Panoramic view of BPDL Plant.


Plywood forms in various stages of completion


The first of the forms for arch assemblies being readied.








This panel was cast with the shot running vertical rather than horizontal. The misplaced panel had to be broken out damaging the panels on either side.




Note the plastic sheeting being used for a bond breaker rather than foam.


Completed assembly


Area of concern. The shot sawn finish has a tolerance of plus/minus 1/2" causing some heads to be out of alignment.

The head tolerance will be controlled by increasing slab thickness and back checking the heads to maintain proper alignment.


BPDL Dutchman repair in upper right comer. It is not uncommon for some damage to occur when lifting the panels from thier casting tables.


Precast beam assembly being  readied for outdoor storage.


Raw material storage area.



BPDL Affordable Concrete Housing Project.

Each home will fit into a single shipping container with a weight of 20,000 pounds or less.


Everything is concrete except for the door and windows.


Mockup of the concrete roof panels.

Each piece of the home can be lifted and set in place by hand, no equipment required.

Roof truss system.


Pictures around the city of Alma May 20, 2009


Arch assembly 5013 May 29, 2009

Completed arch, both inner and outer walls in a single assembly, total weight 55,000 pounds.




Trucks frequently arrive without enough nylon straps so they place a single strap across the weakest portion of the pallet.



Straps should always be placed directly over the homasote skids.


Oddly configured trailers that don't have continuous strapping rails mean the straps can't be properly located.





Steel chains that are very unforgiving and conduct vibration are frequently used in lew of nylon straps.


Shot finish Indiana Limestone on precast.

November 12, 2009 - Photographs from jobsite.
November 18, 2009 - Photographs from jobsite.
November 19, 2009 - Photographs from jobsite.


November 20, 2009 - Photographs from jobsite.
December 27, 2009 - Photographs from jobsite.
December 1, 2009 - Photographs from jobsite.
December 14, 2009 - Photographs from jobsite.
December 16, 2009 - Photographs from jobsite.
December 18, 2009 - Photographs from jobsite.
January 26, 2009 - Photographs from jobsite.
February 5, 2009 - Photographs from jobsite.
March 3, 2009 - Photographs from jobsite.