Excerpt from Ceremonies Connected With the Opening of the Building of the Boston Chamber of Commerce, Wednesday and Thursday, Jan: 20 and 21, 1892

The excavation for the building was begun in the early part of May, 1890. The corner-stone was laid Sept. 29, 1890. The building was completed in January, 1892.

The building stands on piles, each pile holding seven and one-half tons. The foundation is made of granite, the basement walls being lined with hollow brick. The basement floor of the building is composed of one foot of Portland cement concrete, on which is laid a course of tarred paper, on which the wooden floors are placed. The boiler-room floor, being below high-water mark, has two feet of Portland cement concrete on the bottom and on the sides, and then covered with brick.

The exterior walls of the building are made of pink Worcester Quarry granite from Milford, Mass., and are backed with solid brick and faced on the inside with hollow brick, the plaster of the rooms being placed directly on the hollow brick.

The floors of the building are made with twelve-inch steel beams, placed from four to six feet apart and filled in with hollow terra-cotta arched floor blocks, the top of these arches being levelled up with concrete to receive the wooden floors. The flat roof is made in the same manner, and covered with tar and gravel roofing.

The floors of the vestibules and lower corridors are laid with marble tile, and the vestibules and lower corridors are wainscoted with white Italian marble.

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