Highlighted Green Construction Experience
Renovation of the Home Owners Loan Corporation (HOLC) Building

General Services Administration: Washington DC

The Home Owners Loan Corporation (HOLC) Building project included the phased upgrade of an occupied, historic facility’s entire mechanical and HVAC systems, as well as a security enhancement for the structure’s exterior.

Notably, Grimberg installed energy-efficient systems and additional sustainable design features throughout the bid/build project.

Grimberg remained ahead of schedule throughout the majority of the project and completed all work on time, within budget, and with no lost time accidents. In addition, the company received excellent ratings for its performance, as well as an Association of General Contractors award.

Overview

Grimberg performed all work on the HOLC project in an occupied and secure federal environment. Work included the demolition of existing air handling units (AHUs) and the installation of eight large, new AHUs. Grimberg also installed state-of-the-art HVAC support systems, including controls, cooling towers, chillers and associated piping, a pumping package system, and filtration, and initiated extensive facility protection measures.

Grimberg replaced all mechanical systems with high-efficiency equipment. With that, and to deliver the project at a LEED certifiable level, the contractor installed energy conservation controls, energy-efficient mechanical systems, and other sustainable design features throughout the building.

Work also included the installation of a temporary air handling unit (tied into the building’s existing ductwork) to provide uninterrupted HVAC service to the entire facility throughout construction. Grimberg performed significant structural redesigns and modifications to accommodate new cooling towers and additional mechanical and HVAC systems as well.

In addition to mechanical systems work, the HOLC contract included the installation of 1,200 custom-fabricated, blast-resistant windows to improve the building’s safety and antiterrorism protection. Grimberg installed the new windows over the existing, historic windows to preserve the historic character of the facility.