National Capital Bank



Location: Washington, DC 

Owner: The National Capital Bank of Washington

Engineer: Tadjer Cohen Edelson Associates

Project Duration:

National Capital Bank is a full-service community bank headquartered on Capitol Hill in Washington DC. Founded and built in 1889, it is Washington DC’s oldest bank. Offering walk in and drive through service, NCB is well positioned to assist its surrounding community.


This project addressed various structural and waterproofing repairs across the property. Exterior brick and lintels showed wearing from exposure to the elements. The existing surface lot consisting of a PT slab with asphalt overlay showed visual signs of deterioration from years of heavy traffic. As a result, active leaking was experienced inside the bank’s operating office space. Inside, the subgrade garage exhibited drastic spalling of the concrete structure spanning from the deck, to columns, beams, etc. To address these issues, the scope of the project consisted of the following:

  • 25,000 sf of wall-to-wall partial depth hydro demolition and install of new concrete slab
  • 6,000 sf of full depth concrete repair
  • 8,000 sf of asphalt removal
  • 1,000 sf of topping slab R&R and hot apply install
  • 800 sf of new bonded overlay at teller window drive through
  • Post-Tension cable repairs
  • 300 lf of brick R&R to facilitate new flashing
  • New ADA ramp installation inside garage
  • 200 lf of new Aluminum Cap over Coping Stones
  • 500 lf of Mortar Joint Tuckpointing
  • Exterior Foundation Wall Waterproofing
  • 1,400 sf of penetrating brick sealer
  • 125 lf of expansion joint replacement
  • 100 lf of hydrophilic foam injection
  • 16,000 sf of SOG corrosion inhibitor treatment
  • 33,200 sf of new urethane traffic bearing membrane in the garage and on the surface lot