Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 47 - MISCELLANEOUS PROVISIONS › Subchapter J - WINDOW CLEANING › GENERAL PROVISIONS › Section 47.379 - Methods of fastening anchors

Current through Register Vol. 54, No. 28, July 13, 2024
Anchors shall be attached to the building in the
						following manner:
(1)
Brick
					 masonry and concrete construction.
Bolts or shanks shall be not less
					 than eight inches in length and shall be imbedded their full length or shall
					 extend through the wall. They shall be not less than 3/8 inch in diameter if
					 round and shall be forged or rolled. If rectangular, they shall be not less
					 than 1/4 inch in thickness and having a minimum sectional area of at least as
					 great as a 3/8 inch diameter round. These bolts or shanks shall have either a
					 right angle bend of at least 2 inches at the end or a metal washer riveted, or
					 otherwise securely fastened to the end of the bolt or shank. The washer shall
					 be at least four square inches in area and shall be imbedded in the masonry.
					 Bolts or shanks shall be made of the same material as the anchor.
(2)
Wood construction.
Bolts
					 or shanks shall be not less than 3/8 inch in diameter made of the same material
					 as the anchor, shall pass through the entire window frame or mullion, and shall
					 be securely fastened by a nut and washer. The ends of the bolts or shanks shall
					 be upset to prevent loosening or removal of the nuts.
(3)
Hollow metal frame construction.
The anchor fittings shall be attached by three bolts 5/16 inch in
					 diameter, of the same material as the anchor and shall pass through a steel
					 plate not less than 5/16 inch thick, 3/4 inch wide by 6 inches long. This steel
					 plate shall be bolted or riveted by at least two 1/4 inch bolts, screws or
					 rivets of the same material as the anchor to a part of the frame protected by
					 masonry or concrete. The ends of all bolts shall be upset to prevent loosening
					 or removal of the nuts. As an alternate, each anchor fitting may be attached to
					 the frame and reinforcing plate by means of at least three 5/16 inch screws of
					 the same material and strength as the anchor, threaded and screwed into the
					 plate to a depth of at least 5/16 inch. All screws used in the installation of
					 anchors to metal frame construction shall have the threads terminate far enough
					 from the screw head to prevent weakening due to undercutting.
(4)
Solid metal construction.
Anchor fittings shall be attached by three 5/16 inch bolts of the
					 same material as the anchor. The bolts shall pass through the frame and shall
					 be securely held in place by nuts and washers on the inside. The ends of the
					 bolts shall be upset to prevent loosening or removal of the nuts. Where the
					 nature of the solid metal frame construction is such that this method cannot be
					 followed, it is permissible to drill and tap the metal frame and install the
					 anchor with at least three 5/16 inch diameter screws made of the same material
					 as the anchor and screwed into the frame to a depth of at least 3/8 inch. All
					 screws used in the installation of anchors to metal frame construction shall
					 have the threads terminate far enough from the screw head to prevent weakening
					 due to undercutting.
(5)
Other approved method.
Any other method of attaching anchors
					 shall be approved by the Department.