Mueller Snap Lock (MSL) - Manual (Page 5)

5
IMPORTANT INFORMATION
Roof Safety Considerations
OSHA
The Occupational Safety and Health Act (OSHA) has developed many regulations applicable to the installation of this
or any other roof system. These regulations, identified as Part 1926, Safety and Health Regulation for Construction,
are available from any government book store. The objective of the OSHA standards is to protect the worker from
injury or illness. These OSHA regulations should be recognized as job site requirements and fully complied with.
Failure to do so may result in substantial fines in the event of an OSHA inspection. Safe installation practices may be
further defined and made mandatory by state or local ordinances. Maintaining good housekeeping on the job site is
recognized as being important to both OSHA compliance and to successful job completion.
Walking & Working on Roof Panels
Placing Panels on the Structure
Do not place bundles of panels on the roof structure without first verifying the structure will safely support the
concentrated weight of the panels and the weight of the installation crew. Some roof structures may not be
designed to support the weight of a full panel bundle without additional structural support.
Walking on Roof Panels
An approved and safe walking platform should be used in high traffic areas to prevent the roof panels from being
deformed, scratched, or scuffed.
Do not use a roof panel as a walking platform. An unscrewed panel could collapse under the weight of a person
standing between purlins or at the end.
Do not walk on the last installed panel run, as the unsecured edge could collapse under a person’s weight. When
installing clips or making end lap connections, etc., stand where the roof structure will support your weight.
Do not leave a roof panel edge unattached, always install the clips to the panel before terminating the installation
for any period of time.
When using power tools, equipment, lanyards, retractable lines and other installation equipment, ensure that the
metal parts are covered in such a manner that they do not scratch the panel surface if dragged along the panel.
Panel Overhang
Do not stand on the end of unsupported (cantilevered) panels at the eave or ridge. Standing on the cantilever
portions may result in panel collapse.
Construction Loads
When properly attached to supporting structures and seamed, MSL panels are designed to support uniform loads
which are evenly distributed over the panel surfaces. Panels will also support a minimum 300 pound point load over
any one square foot area of any part of the panel.