Abstract:
A fall arrest safety anchorage device, which can be mounted to a wide variety of rigid planar substrates by utilizing fasteners which pass through apertures in a mounting plate and into a substrate. Angularly extending from the mounting plate is a first positioning member, which projects away from the mounting area to a predetermined position where a second positioning member is attached. The second positioning member angularly extends from the first positioning member to another predetermined position where a safety equipment receiver is attached. Utilizing angles of varying degree at the points of attachment of the positioning members and varying the lengths of the positioning members, the safety equipment receiver can be positioned virtually anywhere. Most important, the safety equipment receiver can be positioned at a desired location away from the initial mounting area for the securing of fall arrest safety equipment, thus providing clearance for the installation of construction materials and allowing workers to perform work safely at heights greater than six feet. Occupational Safety and Health Administration regulations stipulate that whenever a potential for a fall at a height of six feet or more exists, fall protection must be utilized for the safety of workers.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   Not Applicable 
   STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
   Not Applicable 
   REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISK APPENDIX 
   Not Applicable 
   BACKGROUND OF THE INVENTION 
   The present invention relates generally to construction site safety equipment, and more specifically to a fall arrest safety anchorage device. 
   Falls are the number one cause of fatalities in the construction industry. Occupational Safety and Health Administration regulations stipulate that whenever a potential for a fall at a height of six feet or more exists, fall protection must be utilized for the safety of workers. There are several types of fall protection permitted for working at heights above six feet, however, a personal fall arrest safety system is the safest. A personal fall arrest safety system generally consists of an anchorage, connectors, and body harness, but may also include a lanyard, deceleration device, or lifeline. Workers attach their adorned safety gear either to a fall arrest safety anchorage device, a horizontal lifeline, or a vertical lifeline, thereby tethering themselves at a rigid elevated position, thus aiding in the prevention of fatality or injury resulting from a fall. 
   A wide variety of fall arrest safety anchorage devices have been made in an attempt to provide fall protection safety for construction workers, however there are several problems with the fall arrest safety anchorage devices that are readily available. Many fall arrest safety anchorage devices must be secured to a surface where work will be performed and must be removed before many types of work can be completed. Another common problem lies in the versatility of securing the fall arrest safety anchorage devices. Many fall arrest safety anchorage devices can only be mounted in one particular way or to a particular type of material. And then there are those fall arrest safety anchorage devices which are designed for single use only and become garbage upon removal. Besides the previously mentioned problems, many of the existing fall arrest safety anchorage devices are difficult to manufacture and install. 
   BRIEF SUMMARY OF THE INVENTION 
   The present invention is a versatile fall arrest safety anchorage device, which can be used in pairs for horizontal lifeline attachment or individually for vertical lifeline and other fall arrest safety equipment attachment. The fall arrest safety anchorage device can be secured to a wide variety of vertical, horizontal, or inclined rigid planar substrates. When utilized in a pair at opposing corner locations of a building structure for horizontal lifeline attachment, the fall arrest safety anchorage devices will provide clearance between the horizontal lifeline and a working surface, thus allowing for the safe installation of a wide variety of construction materials, before the removal of safety equipment. 
   Accordingly, several objects and advantages of the current invention are as follows. 
   An object of the invention is to provide a new and improved fall arrest safety anchorage device for providing fall protection for workers during the construction process or while performing service work. 
   Another object of the invention is to provide a new and improved fall arrest safety anchorage device that can be mounted in several different ways. 
   A further object of the invention is to provide a new and improved fall arrest safety anchorage device that can be secured to a wide variety of vertical, horizontal, or inclined rigid planar substrates. 
   A further object of the invention is to provide a new and improved fall arrest safety anchorage device that meets all Occupational Safety and Health Administration regulations. 
   A further object of the invention is to provide a new and improved fall arrest safety anchorage device that can remain in place until a substantial amount of work or service is performed. 
   A further object of the invention is to provide a new and improved fall arrest safety anchorage device that is relatively easy to install and remove. 
   A further object of the invention is to provide a new and improved fall arrest safety anchorage device that has a high degree of integral strength. 
   A further object of the invention is to provide a new and improved fall arrest safety anchorage device that is rigid enough to allow reuse after the removal in a previous installation. 
   A yet further object of the invention is to provide a new and improved fall arrest safety anchorage device that can be easily and inexpensively manufactured. 
   Further objects and advantages of the invention will become apparent from a consideration of the drawings and ensuing description. 

   
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING 
       FIG. 1  is a top-right-rear isometric view of the present invention. 
       FIG. 2  is a bottom-left-front isometric view of the present invention. 
       FIG. 3  is a right side view of the present invention. 
       FIG. 4  is a fragmentary isometric in-use view of the present invention positioned adjacent to a corner of a wooden gable framed building structure, depicting the attachment of a horizontal lifeline to the present invention, with a vertical lifeline attached to the horizontal lifeline. 
       FIG. 5  is a fragmentary isometric in-use view of the present invention positioned adjacent to a portion of a rafter&#39;s surface of a wooden gable framed building structure, depicting the attachment of a horizontal lifeline to the present invention, with a vertical lifeline attached to the horizontal lifeline. 
       FIG. 6  is a fragmentary isometric in-use view of the present invention positioned adjacent to a portion of a roof&#39;s surface of a wooden gable framed building structure, depicting the attachment of a vertical lifeline to the present invention. 
       FIG. 7  is a fragmentary isometric in-use view of the present invention positioned adjacent to a portion of a wall&#39;s surface of a wooden gable framed building structure, depicting the attachment of a vertical lifeline to the present invention. 
       FIG. 8  is a fragmentary isometric in-use view of the present invention positioned adjacent to a portion of a fascia&#39;s surface of a wooden gable framed building structure, depicting the attachment of a vertical lifeline to the present invention. 
       FIG. 9  is a fragmentary isometric in-use view of the present invention positioned adjacent to a portion of a rough sills surface within the rough opening of a window of a wooden gable framed building structure, depicting the attachment of a vertical lifeline to the present invention. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   In the following description, like parts are marked throughout the specification and drawing figures with the same reference numerals, respectively. The drawing figures are not necessarily to scale and certain features may be shown in somewhat a generalized form in the interest of clarity. 
   Referring now to  FIG. 1  and  FIG. 2 , there is shown a fall arrest safety anchorage device constructed according to the teachings of the present invention, the fall arrest safety anchorage device being generally indicated by the reference numeral  20 . As will be described further in detail below, the fall arrest safety anchorage device  20  is designed for use in receiving and securing fall arrest safety equipment. 
   It should be noted that the Occupational Safety and Health Administration standard 1926.502 (Year of 2004) stipulates that anchorages used for the attachment of personal fall arrest equipment shall be capable of supporting at least five thousand pounds per employee attached and shall be installed under the supervision of a qualified person. With the aid of fastening devices (such as screws, nails, bolts, rivets, and other similar fastening devices), the fall arrest safety anchorage device  20  can be removably secured to a wide variety of vertical, horizontal, or inclined rigid planar substrates and meet the previously mentioned Occupational Safety and Health Administration&#39;s five thousand pound support requirement. However, a fall arrest safety system failure can occur if the mounting substrate and fastening devices are not strong enough to support a load of five thousand pounds. Selecting an appropriate mounting substrate for the fall arrest safety anchorage device  20  and selecting appropriate fastening devices for removably securing the fall arrest safety anchorage device  20  to a desired mounting substrate shall be apparent to those skilled in the art, and should only be selected by a “qualified person” (as defined by government regulations), and is beyond the scope of the present teachings. For exemplary purposes only, the fall arrest safety anchorage device  20  will be shown in various drawing figures being positioned adjacent to various surface portions of a wooden gable framed building structure. Mounting the fall arrest safety anchorage device  20  to these exemplary surfaces should only be attempted under the supervision of a “qualified person” and in no way does this present teaching represent that the exemplary surfaces described herein are rigid enough to support a load of five thousand pounds. The wooden gable framed building structure was chosen for exemplary purposes because of the shape and various surface portions to clearly demonstrate the usefulness of the fall arrest safety anchorage device  20  and to describe various positioning of the fall arrest safety anchorage device  20  to achieve a variety of fall arrest safety system setups. However, it is to be understood, the fall arrest safety anchorage device  20  can be removably secured to alternative surfaces without departing from the spirit of the present invention. Specifically, as previously mentioned, the fall arrest safety anchorage device  20  can be removably secured to a wide variety of vertical, horizontal, or inclined rigid planar substrates, providing a selected mounting substrate is rigid enough to support a load of five thousand pounds. Fastening devices have been omitted from the exemplary drawing figures because the drawing figures are intended only to provide possible safety configurations, however, it is to be understood, the fall arrest safety anchorage device  20  must be removably secured to a selected mounting substrate with screws, nails, bolts, rivets, or other similar fastening devices, or a combination of these fastening devices, to meet the Occupational Safety and Health Administration&#39;s five thousand pound support requirement. Furthermore, it is also to be understood that the fall arrest safety anchorage device  20  is generally constructed of metal and can be attached by welding or similar processes to planar metal substrates large enough to accommodate mounting of the fall arrest safety anchorage device  20  and rigid enough to meet the Occupational Safety and Health Administration&#39;s five thousand pound support requirement. 
   The fall arrest safety anchorage device  20  is generally shown having a mounting plate  21 , a first positioning member  22 , a second positioning member  23 , and a safety equipment receiving member  24 . 
   The mounting plate  21  is generally of a planar rectangular form, having a right end  25 , a left end  26 , a top edge  27 , a bottom edge  28 , a front face  29 , and a rear face  30 . The mounting plate  21  has a plurality of predetermined first diameter mounting apertures  31  for receiving fasteners which pass through the front face  29  and the rear face  30 , and a plurality of predetermined second diameter mounting apertures  32  for receiving fasteners which also pass through the front face  29  and the rear face  30 . The mounting plate  21  is constructed from and conventionally known to one skilled in the art as flat bar. 
   The first positioning member  22  is generally of an open C-shape form including a pair of spaced apart and parallel flanges  33 ,  34  of equal width, interconnected by a web  35  having an upper web surface and a lower web surface, and having a front end and a rear end. The C-shaped first positioning member  22  is constructed from and conventionally known to one skilled in the art as channel. 
   The second positioning member  23  is generally of an open L-shape form including a pair of legs  36 ,  37  of equal length, which are interconnected and both originating from a common apex point to form a right angle, and having a front end and a rear end. The L-shaped second positioning member  23  is constructed from and conventionally known to one skilled in the art as angle. 
   The safety equipment receiving member  24  is generally an eyebolt, having an eyelet portion  38  with a receiving aperture  39  and an interconnected shank portion  40 . The eyelet portion  38  of the safety equipment receiving member  24  has a predetermined inner diameter dimension and a predetermined outer diameter dimension. The shank portion  40  of the safety equipment receiving member  24  has a predetermined shank length. The safety equipment receiving member  24  has a predetermined overall length that can be obtained by adding the predetermined outer diameter dimension of the eyelet portion  38  and the predetermined shank length. The safety equipment receiving member  24  is conventionally known to one skilled in the art as an eyebolt blank, which refers to an eyebolt that has no external threads on the shank portion  40 . 
   Referring now to  FIG. 1 ,  FIG. 2 , and  FIG. 3 , there are two critical measurements that must be considered when determining the dimensions of the various components of the fall arrest safety anchorage device  20 . A predetermined planar parallel clearance X measurement and a predetermined planar perpendicular clearance Y measurement must first be established. The following example will help provide a better understanding of these critical measurements and the invention. Assume there is a first vertical plane, and on this first vertical plane there is a first point. A six inch first line segment extends from the first point and is perpendicular to the first vertical plane. At the other end of the line segment, there is a second point and there is a second vertical plane being parallel to the first vertical plane. The clearance between the first vertical plane and the second vertical plane is six inches. The predetermined planar parallel clearance X measurement would be six inches. Now there is a four inch second line segment with one end attaching to the second point and being perpendicular to the first line segment, and being on the second vertical plane and extending upward. At the unattached end of the second line segment, there is a third point and a first horizontal plane. By placing a second horizontal plane being parallel with the first horizontal plane at the first point, a clearance of four inches is proven between the first horizontal plane and the second horizontal plane. The predetermined planar perpendicular clearance Y measurement would be four inches. It is noteworthy to mention that it is perpendicular clearance because the first point lies on the first vertical plane, and the first horizontal plane is perpendicular to the first vertical plane. To gain a better understanding of the present invention, the proceeding example will be applied to the components comprising the invention. The purpose of the planar mounting plate  21  is to enable securing of the fall arrest safety anchorage device  20  to a planar mounting surface area M, however for the sake of example, think of the mounting plate  21  as the first point. The purpose of the C-shaped first positioning member  22  is to extend perpendicularly from the planar mounting plate  21  to obtain the predetermined planar parallel clearance X from the planar mounting surface area M and to allow the attachment of the L-shaped second positioning member  23 . However, for the sake of example, think of the C-shaped first positioning member  22  as the first line segment. The purpose of the L-shaped second positioning member  23  is to extend perpendicularly from the upper web surface of the web  35  of the C-shaped first positioning member  22  to obtain the predetermined planar perpendicular clearance Y from the planar mounting surface area M. However, for the sake of example, think of the L-shaped second positioning member  23  as the second line segment. The purpose of the safety equipment receiving member  24  is to receive and secure fall arrest safety equipment. However, for the sake of example, think of the safety equipment receiving member  24  as the third point. Now in other terms, attach the planar mounting plate  21  to the first point. Then attach the C-shaped first positioning member  22  to the planar mounting plate  21  and extend the C-shaped first positioning member  22  to the second point. Then attach the L-shaped second positioning member  23  to the C-shaped first positioning member  22  and extend the L-shaped second positioning member  23  to the third point. Finally attach the safety equipment receiving member  24  to the L-shaped second positioning member  23  at the third point. If the fall arrest safety anchorage device  20  were simply comprised of points and line segments, there would be a means of securing safety equipment at a point which would be six inches outward and four inches upward from the initial mounting position, which has many benefits. 
   As previously mentioned, the predetermined planar parallel clearance X measurement and the predetermined planar perpendicular clearance Y measurement must be considered when determining the dimensions of the various components. Of these two measurements, the predetermined planar perpendicular clearance Y measurement is the most critical, because most of the other dimensions will depend upon the specification of this measurement. To obtain the predetermined planar perpendicular clearance Y measurement with structural integrity, the present invention utilizes the L-shaped second positioning member  23 . The legs  36 ,  37  of the L-shaped second positioning member  23  have a predetermined width dimension, which is determined as follows. The predetermined planar perpendicular clearance Y measurement is squared, then multiplied by two, and then the square root of this number is acquired. The legs  36 ,  37  of the L-shaped second positioning member  23  also have a predetermined thickness that must be subtracted from the previously acquired square root to obtain the final width dimension of the legs  36 ,  37 . The L-shaped second positioning member  23  also has a predetermined length generally equal to the predetermined planar perpendicular clearance Y measurement. The safety equipment receiving member  24  should have a minimum five thousand pound rated load capacity and the shank portion  40  of the safety equipment receiving member  24  has a predetermined length generally equal to the predetermined length of the L-shaped second positioning member  23 . The web  35  of the C-shaped first positioning member  22  has a predetermined depth dimension which is slightly larger than the predetermined planar perpendicular clearance Y measurement multiplied by two. The C-shaped first positioning member  22  has a predetermined length. To acquire the length dimension of the C-shaped first positioning member  22 , the predetermined planar parallel clearance X measurement must first be established. After determining the predetermined planar parallel clearance X measurement, the length dimension of the C-shaped first positioning member  22  is determined by adding the overall length of the safety equipment receiving member  24  to the predetermined planar parallel clearance X measurement, and then the mounting plate  21  has a predetermined thickness which must be subtracted. The flanges  33 ,  34  of the C-shaped first positioning member  22  have a predetermined width generally equal to one third of the length of the C-shaped first positioning member  22 . The mounting plate  21  has a predetermined width as measured from the top edge  27  to the bottom edge  28 . The predetermined width of the mounting plate  21  is generally equal to the width of the flanges  33 ,  34  of the C-shaped first positioning member  22 . The mounting plate  21  also has a predetermined length as measured from the right end  25  to the left end  26  which is generally equal to the predetermined width of the web  35  of the C-shaped first positioning member  22  multiplied by three. 
   As viewed by the human eye, the bottom edge  28  of the mounting plate  21  lies on a horizontal plane. The flanges  33 ,  34  of the C-shaped first positioning member  22  are projecting downwardly from the web  35  and lie on the same horizontal plane as the bottom edge  28  of the mounting plate  21 . The front end of the C-shaped first positioning member  22  is adjacent to the rear face  30  of the mounting plate  21 , with the longitudinal axis of the C-shaped first positioning member  22  being perpendicular to the longitudinal axis of the mounting plate  21  and with the longitudinal axis of the C-shaped first positioning member  22  being on the same horizontal plane as the longitudinal axis of the mounting plate  21 . The C-shaped first positioning member  22  is permanently attached to the mounting plate  21  by a seam weld or similar adhesion method. The legs  36 ,  37  of the L-shaped second positioning member  23  are adjacent to the upper web surface of the web  35  of the C-shaped first positioning member  22 , with the longitudinal axis of the L-shaped second positioning member  23  being parallel with the longitudinal axis of the C-shaped first positioning member  22  and with the longitudinal axis of the L-shaped second positioning member  23  being on the same vertical plane as the longitudinal axis of the C-shaped first positioning member  22 . The rear end of the L-shaped second positioning member  23  and the rear end of the C-shaped first positioning member  22  lie on the same vertical plane. The L-shaped second positioning member  23  is permanently attached to the C-shaped first positioning member  22  by a seam weld or similar adhesion method. The L-shaped second positioning member  23  has a longitudinal apex formed by the interconnection of the legs  36 ,  37 . The shank portion  40  of the safety equipment receiving member  24  is adjacent to the longitudinal apex of the L-shaped second positioning member  23  with the eyelet portion  38  of the safety equipment receiving member  24  projecting forwardly past the front end of the L-shaped second positioning member  23 . The longitudinal axis of the safety equipment receiving member  24  is parallel with the longitudinal axis of the L-shaped second positioning member  23  and the longitudinal axis of the safety equipment receiving member  24  lies on the same vertical plane as the longitudinal axis of the L-shaped second positioning member  23 . The eyelet portion  38  of the safety equipment receiving member  24  being further positioned to be parallel with the top edge  27  of the mounting plate  21 . The shank portion  40  of the safety equipment receiving member  24  is permanently attached to the L-shaped second positioning member  23  by a seam weld or similar adhesion method. 
   Referring now to  FIG. 4 ,  FIG. 5 ,  FIG. 6 ,  FIG. 7 ,  FIG. 8 , and  FIG. 9 , as previously mentioned, for exemplary purposes only, the fall arrest safety anchorage device  20  will be shown in various drawing figures being positioned adjacent to various surface portions of a wooden gable framed building structure and it will also be described being positioned adjacent to various surface portions of a wooden gable framed building structure. The exemplary structure has a planar north wall  41 , a planar east wall  42 , a planar south wall (not shown), and a planar west wall (not shown). The north wall  41  and the south wall are the gable ends of the structure. The exemplary structure also has an inclined planar east roofing portion  43  and an inclined planar west roofing portion  44 , which are interconnected and both originating from a common apex point. The apex is an elongated apex and is conventionally known to one skilled in the art as a ridge  45 . The north wall  41 , the east wall  42 , the inclined east roofing portion  43 , the inclined west roofing portion  44 , and the ridge  45  are generally referenced throughout the drawing figures to indicate surface or position, and some construction materials may be on the same plane as the indicated surface or position. Construction materials will have different reference numerals than indicated surfaces or positions when existing on similar planes. 
   Referring now to  FIG. 4 , the fall arrest safety anchorage device  20  is shown in close proximity of a northeast corner  46  of the exemplary structure, with the northeast corner  46  being generally indicated. The fall arrest safety anchorage device  20  is shown with the mounting plate  21  adjacent to the east wall  42  of the exemplary structure. The top edge  27  of the mounting plate  21  is shown being on a vertical plane and facing northward. The fall arrest safety anchorage device  20  being further positioned in a manner that the safety equipment receiving member  24  is extended past the northeast corner  46  for a predetermined distance. A horizontal lifeline  47  (a safety rope or cable positioned on a horizontal plane) is removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  with the aid of a carabiner  48 . The horizontal lifeline  47  has a swaged loop end with an aperture. The carabiner  48  is shown passing through the aperture of the swaged loop end of the horizontal lifeline  47  and passing through the receiving aperture  39  of the eyelet portion  38  of the safety equipment receiving member  24 . The horizontal lifeline  47  is extended westward on a horizontal plane to another fall arrest safety anchorage device  20  (not shown) being in close proximity of a northwest corner (not shown) of the exemplary structure. Although not shown, the fall arrest safety anchorage device  20  would be positioned with the mounting plate  21  adjacent to the west wall of the exemplary structure. The top edge  27  of the mounting plate  21  would be on a vertical plane and facing northward. The fall arrest safety anchorage device  20  would be further positioned in a manner that the safety equipment receiving member  24  would be extended past the northwest corner for a predetermined distance. The horizontal lifeline  47  would be removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  located in close proximity of the northwest corner with the aid of another carabiner  48  or lifeline tensioning device (not shown). A vertical lifeline  49  (a safety rope or cable positioned on a vertical plane) is removably secured to the horizontal lifeline  47  with the aid of another carabiner  48  in the following manner. The vertical lifeline  49  has a swaged loop end with an aperture. The carabiner  48  is shown passing through the aperture of the swaged loop end of the vertical lifeline  49  and encircling the horizontal lifeline  47 . The vertical lifeline  49  is projecting downward from the horizontal lifeline  47 . The horizontal lifeline  47 , the vertical lifeline  49 , the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  located in close proximity of a northeast corner, and the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  located in close proximity of a northwest corner, are all substantially on a common vertical plane. There is a horizontal distance between the common vertical plane and the north wall  41 , which was established by the predetermined distance that the safety equipment receiving members  24  extended past the two corners. As shown in  FIG. 4 , there is a portion of plywood wall sheathing  50  adjacent to a wooden construction wall stud  51 , and adjacent to the portion of plywood wall sheathing  50  is a portion of thermal vapor barrier membrane  52 , and adjacent to the portion of thermal vapor barrier membrane  52  is a portion of wooden structural siding  53 . This type of fall arrest safety system setup permits construction workers to move freely, both horizontally and vertically near a vertical surface. As a result of this type of fall arrest safety system setup and the established horizontal distance, construction workers secured to the horizontal lifeline  47  and/or the vertical lifeline  49  could safely install most, if not all, of the previously mentioned construction materials on the vertical surface of the north wall  41 , without removing the safety equipment. The appropriate securing of workers to the horizontal lifeline  47  and/or the vertical lifeline  49  shall be apparent to those skilled in the art. It is noteworthy to mention that the horizontal distance is actually made possible by the predetermined planar perpendicular clearance Y measurement discussed earlier in this teaching. 
   Referring now to  FIG. 5 , one of the previously mentioned fall arrest safety anchorage devices  20  is now shown in close proximity of the ridge  45  and the north wall  41  of the exemplary structure. The inclined east roofing portion  43  of the exemplary structure is shown having a layer of roof sheathing  54 . The fall arrest safety anchorage device  20  is shown with the mounting plate  21  adjacent to a planar side face of an inclined rafter or fascia board  55  at the gable end of the north wall  41 , with the side face of the inclined rafter or fascia board  55  facing the north and the eyelet portion  38  of the safety equipment receiving member  24  projecting southward. The fall arrest safety anchorage device  20  is further positioned in a manner that the top edge  27  of the mounting plate  21  is below the layer of roof sheathing  54  at a predetermined distance, the top edge  27  of the mounting plate  21  matches the angle of the roofing pitch, and the longitudinal axis of the shank portion  40  of the safety equipment receiving member  24  is at a predetermined distance from the ridge  45 . And the fall arrest safety anchorage device  20  is even further positioned in a manner that the safety equipment receiving member  24  would be extended above the layer of roof sheathing  54  for a predetermined distance. The previously mentioned horizontal lifeline  47  is now removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  with one of the previously mentioned carabiners  48 . The carabiner  48  is shown passing through the aperture of the swaged loop end of the horizontal lifeline  47  and passing through the receiving aperture  39  of the eyelet portion  38  of the safety equipment receiving member  24 . The horizontal lifeline  47  is extended southward on a horizontal plane to another fall arrest safety anchorage device  20  (not shown) being at the gable end of the south wall of the exemplary structure. Although not shown, the fall arrest safety anchorage device  20  would be positioned with the mounting plate  21  adjacent to a planar side face of another inclined rafter or fascia board  55  at the gable end of the south wall, with the side face of the inclined rafter or fascia board  55  facing the south and the eyelet portion  38  of the safety equipment receiving member  24  projecting northward. The fall arrest safety anchorage device  20  would be further positioned in a manner that the top edge  27  of the mounting plate  21  would be below the layer of roof sheathing  54  at a predetermined distance, the top edge  27  of the mounting plate  21  would match the angle of the roofing pitch, and the longitudinal axis of the shank portion  40  of the safety equipment receiving member  24  would be at a predetermined distance from the ridge  45 . And the fall arrest safety anchorage device  20  would be even further positioned in a manner that the safety equipment receiving member  24  would be extended above the layer of roof sheathing  54  for a predetermined distance. The horizontal lifeline  47  would be removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  located at the gable end of the south wall with the aid of another carabiner  48  or lifeline tensioning device (not shown). The previously mentioned vertical lifeline  49  is now removably secured to the horizontal lifeline  47  with the aid of another carabiner  48  in the following manner. The carabiner  48  is shown passing through the aperture of the swaged loop end of the vertical lifeline  49  and encircling the horizontal lifeline  47 . The vertical lifeline  49  is projecting downward from the horizontal lifeline  47  along the inclined surface of the east roofing portion  43 . The horizontal lifeline  47 , the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  located at the gable end of the north wall  41 , and the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  located at the gable end of the south wall, are all substantially on a common vertical plane and are all substantially on a common horizontal plane. There is a vertical distance between the common horizontal plane and the inclined east roofing portion  43 , which was established by the predetermined distance that the safety equipment receiving members  24  extended above the layer of roof sheathing  54 . As shown in  FIG. 5 , adjacent to the layer of roof sheathing  54  is a layer of roofing felt paper  56 , and adjacent to the layer of roofing felt paper  56  is a strip of roofing drip edge  57 , and adjacent to the strip of roofing drip edge  57  is a layer of asphalt roofing shingles  58 . This type of fall arrest safety system setup permits construction workers to move freely, both horizontally and vertically on an inclined surface. As a result of this type of fall arrest safety system setup and the established vertical distance, construction workers secured to the horizontal lifeline  47  and/or the vertical lifeline  49  could safely install most, if not all, of the previously mentioned construction materials on the inclined east roofing portion  43 , without removing the safety equipment. It is noteworthy to mention that the vertical distance is actually made possible by the predetermined planar perpendicular clearance Y measurement discussed earlier in this teaching. 
   Referring now to  FIG. 6 , one of the previously mentioned fall arrest safety anchorage devices  20  is now shown in close proximity of the ridge  45  and the north wall  41  of the exemplary structure. The fall arrest safety anchorage device  20  is positioned with the mounting plate  21  adjacent to the planar inclined east roofing portion  43  of the exemplary structure, the top edge  27  of the mounting plate  21  is facing northward, and the eyelet portion  38  of the safety equipment receiving member  24  projecting toward the planar inclined east roofing portion  43  surface. The previously mentioned vertical lifeline  49  is now removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  with one of the previously mentioned carabiners  48 . The carabiner  48  is shown passing through the aperture of the swaged loop end of the vertical lifeline  49  and passing through the receiving aperture  39  of the eyelet portion  38  of the safety equipment receiving member  24 . The vertical lifeline  49  is extended downward along the inclined east roofing portion  43  surface. This type of fall arrest safety system setup permits construction workers to move vertically on an inclined surface. As a result of this type of fall arrest safety system setup, construction workers secured to the vertical lifeline  49  could safely perform many construction or service tasks. 
   Referring now to  FIG. 7 , one of the previously mentioned fall arrest safety anchorage devices  20  is now shown with the mounting plate  21  adjacent to the north wall  41  of the exemplary structure, the top edge  27  of the mounting plate  21  facing eastward, and the eyelet portion  38  of the safety equipment receiving member  24  projecting toward the vertical planar surface of the north wall  41 . The previously mentioned vertical lifeline  49  is now removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  with one of the previously mentioned carabiners  48 . The carabiner  48  is shown passing through the aperture of the swaged loop end of the vertical lifeline  49  and passing through the receiving aperture  39  of the eyelet portion  38  of the safety equipment receiving member  24 . The vertical lifeline  49  is projecting downward. This type of fall arrest safety system setup permits construction workers to move vertically near a vertical planar surface. As a result of this type of fall arrest safety system setup, construction workers secured to the vertical lifeline  49  could safely perform many construction or service tasks. 
   Referring now to  FIG. 8 , one of the previously mentioned fall arrest safety anchorage devices  20  is now shown in close proximity of a southeast corner  59  of the exemplary structure, with the southeast corner  59  being generally indicated. It is also shown that the east wall  42  has an eave  60  as also generally indicated, with a fascia board  61  that runs north and south. The fall arrest safety anchorage device  20  is positioned with the mounting plate  21  adjacent to the planar vertical side face of the fascia board  61  which faces eastward, the top edge  27  of the mounting plate  21  facing upward, and the eyelet portion  38  of the safety equipment receiving member  24  projecting westward. The previously mentioned vertical lifeline  49  is now removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  with one of the previously mentioned carabiners  48 . The carabiner  48  is shown passing through the aperture of the swaged loop end of the vertical lifeline  49  and passing through the receiving aperture  39  of the eyelet portion  38  of the safety equipment receiving member  24 . The vertical lifeline  49  is projecting upward along the inclined east roofing portion  43  surface and although not shown, the vertical lifeline  49  continues up the inclined east roofing portion  43  surface until it crosses the ridge  45  and then it begins projecting downward along the inclined west roofing portion  44  until it reaches a predetermined point. This type of fall arrest safety system setup permits construction workers to move vertically on an inclined surface. As a result of this type of fall arrest safety system setup, construction workers secured to the vertical lifeline  49  could safely perform many construction or service tasks on an opposite side of an elongated apex from which the fall arrest safety anchorage device  20  is removably secured. 
   Referring now to  FIG. 9 , it is generally indicated that the exemplary structure has a rough opening for a window  62  with a rough sill  63  on the north wall  41 . One of the previously mentioned fall arrest safety anchorage devices  20  is now shown with the mounting plate  21  adjacent to the planar side face of the rough sill  63 , with the planar side face of the rough sill  63  facing upward. The fall arrest safety anchorage device  20  is further positioned in a manner that the top edge  27  of the mounting plate  21  is facing northward, and the eyelet portion  38  of the safety equipment receiving member  24  is projecting downward towards the earths surface. And the fall arrest safety anchorage device  20  is even further positioned in a manner that the safety equipment receiving member  24  would be extended past the plywood wall sheathing  50  for a predetermined distance. The previously mentioned vertical lifeline  49  is now removably secured to the safety equipment receiving member  24  of the fall arrest safety anchorage device  20  with one of the previously mentioned carabiners  48 . The carabiner  48  is shown passing through the aperture of the swaged loop end of the vertical lifeline  49  and passing through the receiving aperture  39  of the eyelet portion  38  of the safety equipment receiving member  24 . The vertical lifeline  49  is projecting downward. This type of fall arrest safety system setup permits construction workers to move vertically, near a vertical planar surface. As a result of this type of fall arrest safety system setup, construction workers secured to the vertical lifeline  49  could safely perform many construction or service tasks. 
   The above disclosure is not intended as limiting. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teachings of the invention, including the use of differently configured structural members besides the C-shaped first positioning member  22  and the L-shaped second positioning member  23  to achieve the predetermined planar parallel clearance X measurement and the predetermined planar perpendicular clearance Y measurement. Accordingly, the above disclosure should be construed as limited only by the restrictions of the appended claims.