JOHNS HOPKINS HACKERMAN-PATZ
PATIENT AND FAMILY PAVILION

Location:
301 N. Broadway St.
Baltimore, MD

Date:
October 2008

Client:
The Whiting-Turner Contracting Co.

Project Type:
New construction

Building Features:
EPDM (membrane systems)

Structural Attachment Considerations:
Through bolted fasteners for wrapping steel framing
Welded for steel framing

Products Supplied, Installed, and Tested:
SM-1-8-18 Roof anchors
SM-PLT-85-58 Bottom plates
SM-TRA Threaded rod assemblies
SM-4 Roof anchors
SM-HLL Horizontal cable systems

Objective:
Design and install a code-compliant suspended maintenance system. This system consists mostly of anchors welded directly to the top of steel beams. Under deck bracing was required since the beams were not substantial enough to support the loads imposed by the roof anchors. On the west side of the building, horizontal cables for rope descent (see Horizontal Cable for Rope Descent System) were slung between four pairs of anchors, spaced at approximately 20-25 feet, to provide places to tie both a suspension rope and a fall arrest rope. The cables was permanently attached to the anchors. The suspended maintenance system design includes horizontal cables because structure sufficient to support the roof anchors was not available within this space. Although a horizontal cable system is not the preferred method of providing anchorages, in some cases it is the only viable option.