NATIONAL SOCIETY DAUGHTERS OF THE AMERICAN REVOLUTION, WASHINGTON DC

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CONNELL ARCHITECTS ARCHITECTURE INTERIOR

PLANNING 35 National Historic Landmarks/

Places Presidential Historic Preservation

1 NATIONAL SOCIETY DAUGHTERS OF THE AMERICAN REVOLUTION, WASHINGTON DC SWANKE HAYDEN CONNELL ARCHITECTS ARCHITECTURE INTERIOR DESIGN HISTORIC PRESERVATION MASTER PLANNING 35 National Historic Landmarks/ Listed on the National Register of Historic Places Presidential Historic Preservation Awards for the Statue of Liberty & First Presbyterian Church

2 NSDAR WASHINGTON DC A CASE STUDY THE COMPLEX MEMORIAL CONTINENTAL HALL - CONSTITUTION HALL - ADMINISTRATION BUILDING 3 BUILDING COMPLEX BUILT BETWEEN LOCATED ADJACENT TO THE WHITE HOUSE & OLD EXECUTIVE OFFICE BUILDING MCH & CH ARE LISTED ON THE NATIONAL REGISTER OF HISTORIC PLACES

3 EXECUTIVE SUMMARY OVERVIEW PRESERVE HISTORIC FABRIC PROVIDE MODERNIZED FACILITY MEETS CURRENT CODES SUPPORTS NSDAR S GOALS METHODOLOGY CLASIFY HISTORICAL SIGNIFICANCE DOCUMENT EXISTING CONDITIONS PRIORITIZE DEFICIENCIES DEVELOP FINDINGS & RECOMMENDATIONS EXISTING CONDITIONS EXTERIOR MATERIAL DETERIORATION DELAMINATION OPEN JOINTS & MOVEMENT FRACTURED AND LOOSE ELEMENTS MATERIAL STAINING IMPROPER PATCHING OF MATERIAL DEFECTIVE BUILDING TREATMENT ROOF FLASHING FAILURES PONDING WATER/DRAINAGE ISSUES WINDOW ASSEMBLY PROBLEMS ACCESSIBILITY

4 EXISTING CONDITIONS INTERIOR NON-DISCREET INSERTION OF NEW SYSTEMS INTO HISTORIC FABRIC STAIRWELL SKYLIGHT DAMAGE BASEMENT SLAB CRACKING ADMIN. BLDG. INADEQUATE SYSTEMS TO SUPPORT SPECIAL SPACES INABILITY TO MAINTAIN LIGHTING & BUILDING SYSTEMS SPACE UTILIZATION ISSUES CIRCULATION CONFLICTS ACCESSIBILITY EXISTING CONDITIONS

5 EXISTING CONDITIONS EXISTING CONDITIONS

FINDINGS AND RECOMMENDATIONS EXTERIOR PRIORITY ONE REMOVE AND STABILIZE ALL CONSTITUTION HALL FRACTURED

MEMORIAL CONTINENTAL HALL CORNICE SELECTED MODILLIONS AND TRIM THE GROUND.

PHASE THE WORK BY BUILDING AND OR AREA TO BE REPAIRED.

6 FINDINGS AND RECOMMENDATIONS EXTERIOR PRIORITY ONE REMOVE AND STABILIZE ALL CONSTITUTION HALL FRACTURED LIMESTONE AT ROOF LINE ELEMENTS HIGH ON THE FAÇADE WHICH ARE LOOSE AND HAVE THE POTENTIAL OF FALLING TO MEMORIAL CONTINENTAL HALL CORNICE SELECTED MODILLIONS AND TRIM THE GROUND. FINDINGS AND RECOMMENDATIONS EXTERIOR PRIORITY TWO STABILIZE THE EXTERIOR ENVELOPE OF THE COMPLEX AND PHASE THE WORK BY BUILDING AND OR AREA TO BE REPAIRED. MEMORIAL CONTINENTAL HALL ROOF FAÇADE TERRACES - DRIVES - ENTRANCES CONSTITUTION HALL ROOF FAÇADE TERRACES - DRIVES ENTRANCES ADMINISTRATION BUILDING ROOF FAÇADE DRIVES - ENTRANCES

FINDINGS AND RECOMMENDATIONS EXTERIOR PRIORITY THREE ADDRESS THE OPERATIONAL ISSUES RELATED TO BUILDING EXTERIOR PRIORITY FOUR ADDRESS THE MORE COSMETIC ITEMS RELATED TO SITE AND BUILDINGS.

7 FINDINGS AND RECOMMENDATIONS EXTERIOR PRIORITY THREE ADDRESS THE OPERATIONAL ISSUES RELATED TO BUILDING EXTERIOR PRIORITY FOUR ADDRESS THE MORE COSMETIC ITEMS RELATED TO SITE AND BUILDINGS. ACCESS AND SECURITY. FINDINGS AND RECOMMENDATIONS INTERIOR PRIORITY ONE PROTECT ALL HISTORIC FABRIC IMPACTED BY THE UTILIZATION OF SPACES DURING SPECIAL INTERIOR - PRIORITY THREE REPROGRAM SPACE UTILIZATION TO ACCOMMODATE NSDAR S OPTIMIZED USE OF THE BUILDING COMPLEX. FUNCTIONS. INTERIOR PRIORITY TWO REPAIR INTERIOR FINISHES DAMAGED BY WATER INFILTARTION, MOISTURE AND INTERIOR PRIORITY FOUR REPLICATE ORIGINAL HISTORIC FABRIC REMOVED OR DAMAGED BY PREVIOUS ALTERATIONS AND RENOVATIONS. THE NORMAL WEAR ON THE ELEMENTS.

8 OPERATIONAL ISSUES EXTERIOR SECURITY ENTRANCES LOADING/UNLOADING ACCESS TO TERRACES PARKING INTERIOR SECURITY MULTIPLE USE FACILITIES SPACE UTILIZATION STORAGE OFF HOUR PROGRAM USES BUILDING PRESERVATION ZONES

9 BUILDING PRESERVATION ZONES BUILDING PRESERVATION ZONES

10 BUILDING PRESERVATION ZONES BUILDING PRESERVATION ZONES

Building Relationships APT DC General Contractor (GC)

Restoration Sheet Metal Contractor Project Delivery

Contractors Part of the GC Bid Team Owner/Architect

11 Building Relationships APT DC General Contractor (GC) Architect SWRI Material Manufacturer Members Masonry Restoration Sheet Metal Contractor Project Delivery Method Competitive Bid Select List Three General Contractors Part of the GC Bid Team Owner/Architect Interview Process GC Specialty Contractors Project Leadership

12 Project Delivery Method Bid Qualifications 3 Company Projects 3 Craftsmen 3 Projects Each For Masonry Cleaning and Consolidation Masonry Repairs and Pointing

Gutter Repairs Project Preplanning Selecting the Project Team Owners Schedule Concerts at

14 Scope of Repair Work 2007/2008 Phase of Work Marble Consolidation Re-pointing Stabilization General Cleaning Cleaning Stains Stone Repairs Repair to Damage Flashing & Gutter Repairs Project Preplanning Selecting the Project Team Owners Schedule Concerts at Constitution Hall Weddings Had to wrap the scaffolding in white tarps for weddings July 4 TH Celebration

15 Safety and Security Keep public out of construction zones Climbers Open for Concerts during construction Pedestrian Access Security Security Cameras Location to the White House Public Space Plan

16 Flashing, Repair, Replacement Mock Ups General Cleaning and Stain Cleaning Mock Ups General cleaning expectations Stains that were addressed: Biological Calcium Sulfate Carbon build up Copper stains Rust stains Tar stains 24 different products

17 Access to the Facades What was bid What the PM built 2 point suspended swing stages System scaffolding Quality Control Inspection Protocol for each work item Task Planning In Place Inspection Follow up Inspection

18 Consolidant log Chemical Cleaning log

Dramatically increases the resistance of marbles to acid attack and strengthens deteriorating carbonate stones.

19 Marble Consolidation Why? Protects and strengthens deteriorating carbonate building stones such as marble. Reduces the vulnerability of treated stones to the ravages of air pollution, acid rain and normal weathering. Dramatically increases the resistance of marbles to acid attack and strengthens deteriorating carbonate stones. Marble Consolidation Why? Protects and strengthens deteriorating carbonate building stones such as marble. It reduces the vulnerability of treated stones to the ravages of air pollution, acid rain and normal weathering. Dramatically increases the resistance of marbles to acid attack, and strengthens deteriorating carbonate stones.

Marble Consolidation Consolidation Application Instructions Apply to the point of rejection.

Repeat steps 1 and 2 until three saturating applications have been completed.

Allow surfaces treated to dry for 30 minutes or until surface is visibly dry.

20 Marble Consolidation Consolidation Application Instructions Apply to the point of rejection. Allow the treatment to be absorbed for 30 minutes or until surface is visibly dry and absorbent. Repeat steps 1 and 2 until three saturating applications have been completed. In areas where deterioration is advanced, additional applications may be required. Allow surfaces treated to dry for 30 minutes or until surface is visibly dry. Note: A minimum of 30 minutes drying time is essential between applications. If necessary, drying time may be extended overnight without adverse effects. Finishing Rinse Apply the Finishing Rinse to the point of rejection. Allow treated surfaces to dry for 24 hours before surface repairs. Marble Consolidation Leak from above created copper staining as well as sugaring of marble. This area was consolidated to help slow further deterioration.

21 Selective Re-pointing Inspect and re-point as required. Many different colors of mortar are visible. Previous campaigns through the years (including caulk in some limited areas). Removing the mortar. Skyward Facing Joints Lead Tees

Fractured, Loose and Missing Elements Injecting

in texture and slight difference in color were

22 Fractured, Loose and Missing Elements Injecting epoxy in a stainless steel pin hole for marble repairs. Minimum dutchman repairs a very strong difference in texture and slight difference in color were identified in the mock up. Fractured, Loose and Missing Elements Scope change depending on existing condition

23 General Cleaning Nebulized Mist-Method of cleaning with a concentrated fog. The Substrate is saturated and the stain rises to the surface for easy removal. General Cleaning

24 General Cleaning Cleaning Stains Types of Stains Biological Calcium Sulfate Carbon build up Copper stains Rust stains Tar stains Some marble stains required up to 4 to 5 applications of a poltice.

Cleaning Stains Cleaning of the biological growth at the

Cleaning Stains Drip edge and heavily copper stained area on

25 Cleaning Stains Cleaning of the biological growth at the cornice level. The cleaning was performed with a very low PSI equipment and a mild cleaner. Cleaning Stains Drip edge and heavily copper stained area on marble. Treated with three applications of a cleaning material and two applications of a poultice. None of the applications removed the stain, due to its depth in the stone.

Stone Delamination Many areas of limestone

match up the marble veining for each of the

26 Stone Delamination Many areas of limestone and marble delamination were directly below Leaking Gutters. LIMESTONE AND MARBLE REPAIR Craftsmen had to match up the marble veining for each of the marble repairs. Several different mortar colors were use to create a marble repair.

27 Stone Repairs Stone Repairs

28 Stone Repairs Apprentice Program Stone Repairs Sandblasting the stone clips. Sandblasting and coating a rust inhibitive material. These areas were then repaired.

29 Defective Building Treatments Defective Building Treatments Previous epoxy repair replacement and rust cleaner application.

Defective Building Treatments Flashing previously installed under 17th

30 Defective Building Treatments Anchors discovered in column volutes from previous work. Defective Building Treatments Flashing previously installed under 17th Street pediment. These were the source of significant iron staining. Steel corrosion will exert enough pressure over time to split the stone

31 Defective Building Treatments Some of these patches are cracking again, which could be caused by the patch material or the continued rusting of the clips behind them Flashing, Gutter Repairs, Ponding Water, Drainage issues

Flashing, Gutter Repairs, Ponding Water, Drainage issues Thru-wall

Previous roof work encapsulated the through wall flashing.

Stained Glass Restoration Metal was cleaned with an anionic cleaning

32 Flashing, Gutter Repairs, Ponding Water, Drainage issues Thru-wall flashing visible in joint toward bottom of scupper. Previous roof work encapsulated the through wall flashing. Ponding water and leaking at cornice. Stained Glass Restoration Metal was cleaned with an anionic cleaning compound (so it did not remove the patina). The loose glazing was removed with hand tools, and it was reglazed with Linseed Glazing Putty.

33 Stained Glass Restoration Re-glazing the stained-glass window. On Time Completion

34 NEXT STEPS UPCOMING SCOPE OF WORK EXTERIOR TERRACE REHABILITATION MAIN ENTRANCE MODERNIZATION IMPROVED HANDICAP ACCESS PENTHOUSE ROOF STABILIZATION BIRDNETTING INTERIOR SPACE RE-PLANNING QUESTIONS Questions?

DIVISION 04 MASONRY CAST STONE. A. Design Considerations. 1. Cast stone shall comply with ASTM C1364, Standard Specification for Cast Stone.

DIVISION 04 MASONRY CAST STONE. A. Design Considerations. 1. Cast stone shall comply with ASTM C1364, Standard Specification for Cast Stone. DIVISION 04 MASONRY 04720 CAST STONE A. Design Considerations 1. Cast stone shall comply with ASTM C1364, Standard Specification for Cast Stone. 2. Care must be taken in the design of individual units