Dabrickinshaw913
Structural
- Oct 28, 2021
- 2
First post, long time lurker.
Working on an existing building that was built in the 1920s. The structural system consists of a steel skeleton and encased in concrete. Based on my research and some photos of the building while in construction - I think the structural system is System M. Link Page 55 with graphic on Page 145. See attached photo of the steel during construction.
I have checked the antiquated structural systems series and slideruleera but have not seen anything. Has anyone seen this type of construction? Or have any additional literature about it?
(text from the link)
9. System M
Plate XV.
System M has been put on the market by The Standard Concrete Steel Company of New York City, and has been used to a considerable extent in the East. It is well adapted to long spans and heavy loads. Floor beams up to 50 feet in length have been used with success, and several buildings have been designed for floor loads of 250 # per square foot. In this style of construction the tension reinforcement for the beams and girders is composed of rolled sections bolted or riveted to metal columns, (sometimes of cast iron) which form the column reinforcement. Stirrups are provided by passing rods through the web of the rolled sections and bending them up. Rods or metal fabric may be used for the slab reinforcement.
The common theories of design may be applied to this system. The steel skeleton is constructed ahead of the concrete and assists in supporting the centering.
Some of the important buildings constructed in this system are: The Maryland State Tobacco Warehouse; 102-4 Fifth Ave. Building, New York City; Building at Grand and Mercer Sts., New York City, and the United States Medical Stores, Greenwich, New York. Very little information is obtainable regarding tests. A portion of the floor of the Maryland State Tobacco Warehouse, designed for 200 # per square foot, successfully withstood a load of 870 # per square foot with but slight deflection.
Working on an existing building that was built in the 1920s. The structural system consists of a steel skeleton and encased in concrete. Based on my research and some photos of the building while in construction - I think the structural system is System M. Link Page 55 with graphic on Page 145. See attached photo of the steel during construction.
I have checked the antiquated structural systems series and slideruleera but have not seen anything. Has anyone seen this type of construction? Or have any additional literature about it?
(text from the link)
9. System M
Plate XV.
System M has been put on the market by The Standard Concrete Steel Company of New York City, and has been used to a considerable extent in the East. It is well adapted to long spans and heavy loads. Floor beams up to 50 feet in length have been used with success, and several buildings have been designed for floor loads of 250 # per square foot. In this style of construction the tension reinforcement for the beams and girders is composed of rolled sections bolted or riveted to metal columns, (sometimes of cast iron) which form the column reinforcement. Stirrups are provided by passing rods through the web of the rolled sections and bending them up. Rods or metal fabric may be used for the slab reinforcement.
The common theories of design may be applied to this system. The steel skeleton is constructed ahead of the concrete and assists in supporting the centering.
Some of the important buildings constructed in this system are: The Maryland State Tobacco Warehouse; 102-4 Fifth Ave. Building, New York City; Building at Grand and Mercer Sts., New York City, and the United States Medical Stores, Greenwich, New York. Very little information is obtainable regarding tests. A portion of the floor of the Maryland State Tobacco Warehouse, designed for 200 # per square foot, successfully withstood a load of 870 # per square foot with but slight deflection.
