US3136521A

US3136521A - Hanger assembly

Info

Publication number: US3136521A
Application number: US161187A
Authority: US
Inventors: James F Corcoran
Original assignee: UNIVERSAL FORM CLAMP CO
Current assignee: UNIVERSAL FORM CLAMP CO
Priority date: 1961-12-21
Filing date: 1961-12-21
Publication date: 1964-06-09
Anticipated expiration: 1981-06-09

Description

June 9, 1964 J. F. coRcoRAN 3,136,521

HANGER ASSEMBLY Filed Dec. 21, 1961 Ma y: \ffl/IZQSFUOWOQ/W/Z United States Patent 3,136,521 HANGER ASSEMBLY James F. Corcoran, Chicago, IlL, assignor to Universal Form Clamp Co., a corporation of Illinois Filed Dec. 21, 1961, Ser. No. 161,187 1 Claim. (Cl. 243-300) This invention relates to hanger assemblies adapted to secure concrete retaining forms to beams. In particular, the invention relates to hanger assemblies used in the construction of fascias or similar auxiliary concrete structures which adjoin a roadway, overpass, or other concrete installation.

It is frequently desirable to construct a fascia or similar auxiliary structure along a side edge or a roadway, viaduct, bridge, etc., so as to provide a sidewalk, drain gutter, or the like for the pavement. In the construction of such a fascia, concrete retaining forms must be provided adjacent the outside wall of an outermost beam of the reinforcing framework, these forms being maintained in somewhat of a cantilever position in that the ends of the forms farthest from the beam are substantially unsupported.

The conventional manner of securing such concrete retaining forms to a beam is by means of hanger bolts which are disposed in an outwardly and downwardly inclined position relative to the top surface of the beam, and which engage a diagonal brace of the concrete form so as to exert a force on the form having both lateral and vertical components, thereby compensating for the moment set up by forces such as the weight of the concrete which act downwardly on the form at a distance from the beam.

Various forms of assemblies have been provided which will maintain a hanger bolt in the above-mentioned position. One such assembly is shown in Hillberg Patent No. 2,985,937. This assembly, however, is of relatively complex design and, hence, requires an expensive manufacturing operation. In addition, it is in a relatively unstable position on the supporting beam until it is secured to the fascia form, thus making it necessary to secure and position the form and the assembly simultaneously. Also, the Hillberg assembly is practical only when used with metal I-beams.

It is the principal object of the present invention to provide an improved hanger assembly for concrete retaining forms.

An additional object of the invention is to provide an improved hanger assembly for concrete retaining forms used in the construction of fascias or similar concrete structures which adjoin a concrete roadway or the like.

A further object of the invention is the provision of such a hanger assembly which is economical to manufacture, which can be assembled at the site of the construction with a minimum of time, effort and expense, and which can be used with various types of supporting beams.

Other objects and advantages of the invention will become apparent with reference to the following description and the accompanying drawings.

In the drawings:

FIGURE 1 is a fragmentary perspective view of a portion of a hanger assembly formed in accordance with the present invention; and

FIGURE 2 is a fragmentary perspective view of a concrete retaining form supported from an I-beam by one of the improved hanger assemblies.

In the embodiment illustrated, the present invention is applied to an improved hanger assembly 11 which is adapted to secure a fascia-supporting concrete retaining form 13 to an I-beam 15 which is part of the reinforcing framework. The hanger assembly 11 is adapted to secure the fascia form 13 to one side wall of the beam 15 ice and to secure one end of an intermediate retaining form 17, i.e., a form extending between adjacent beams, to the opposite side Wall of the beam 15.

More specifically, a conventional reinforcing framework for a roadway or the like customarily includes a plurality of I-beams 15 positioned in parallel relation to the longitudinal axis of the roadway and in laterally spaced relation to one another. The single beam 15 shown in FIGURE 2 represents an outer supporting beam, to the opposite sides of which the retaining forms 13 and 17 are secured. While shown in the form of a metal I-beam, the beam 15 may be a steel-reinforced concrete beam or any of a number of similar supporting members frequently used in such installations, and the hanger assembly 11 is not limited in its use to any particular type of beam.

A portion of each of the retaining forms 13 and 17 is shown in FIGURE 2. Each of the forms includes sheets 19 of sturdy but inexpensive material, such as plywood, supported by joists 21 disposed transversely of the longitudinal axis of the beam, and pairs of ledgers 23, 24, and 25 disposed in parallel relation to the longitudinal axis of the beam. The ledgers are arranged in pairs, with the ledgers of each pair spaced apart to provide openings for receiving the suspension bolts of the improved fascia hanger.

In addition to the above-mentioned joists and ledgers, the fascia-supporting form 13 includes vertically disposed studs 26 which are secured at their upper ends to joists 21. A block 27 is interposed between the lower portion of each stud and the adjacent flange of the I-beam.

Diagonal braces 28 extend between the studs 26 and the corresponding joists 21 of the fascia form. The ledger assembly 25 is held in contact with the braces 28 by hanger bolts 29, only one of which is shown. The ends of each bolt 29 are threaded to receive

nuts

30 and 31, and a bearing plate or washer 32 is located between the nut 31 and the ledger 25.

In accordance with customary practice, the forms 13 and 17 are disposed adjacent the outside wall of an outer beam and, when an I-beam or similar flanged beam is used, portions of the sheets 19 and joists 21 are disposed immediately beneath the top flange, and with the ledger assembly 24 disposed immediately beyond the outer edge of the flange. The intermediate forms 17 are similarly disposed on the opposite side of the beam.

The hanger assembly 11 of the preferred embodiment is adapted to secure the fascia form 13 to the outside face of the beam 15, and to support an end edge of the intermediate form 17 adjacent the inside face of the beam. The hanger assembly includes a bar 33 which is adapted to rest on the upper surface of the beam 15. At the ends of the bar 33 are holes 34 for receiving a pair of suspension bolts 35 which support the ledger assemblies 23, and 24 as illustrated in FIGURE 2. The ends of the bolts 35 are threaded to receive nuts 36, and the lower ends are also provided with washers or bearing plates 37. A bracket 38 is mounted on the outer end of the bar 33 for securing the upper end of the suspension bolt 29.

More specifically, the bar 33 is in the form of an inverted channel having

side walls

39 and 41. The lower edges of the side walls rest upon the upper surface of the beam. The length of the bar 33 is somewhat greater than the width of the beam 15, and the bar is positioned transversely of the longitudinal axis of the beam so that its ends project outwardly beyond the edge of the beam so as to permit attachment of the vertically disposed bolts 35.

Due to the positioning of the opposed edges of the forms 13 and 17 beneath the top flange of the beam 15, tighten- 9 ing of the nuts 36 urges the forms against the lower surface of the top flange and efiectively clamps the forms to the beam while at the same time securing the bar 33 to the upper surface of the beam.

While the suspension bolts 35 are effective in providing vertical support for the forms 13 and 17, additional support is needed for the fascia form 13, since the center of gravity of the concrete which forms the fascia is located at a distance from the beam 15 and, therefore, sets up a moment which tends to urge the upper edge of the form laterally away from the beam. In order to counteract this moment, therefore, the hanger bolt 29 is secured to the bar 33 and extends outwardly and downwardly therefrom so as to coact with the ledger 2,5 for rigidly supporting the fascia.

The bracket 38 comprises a generally rectangular flat plate positioned upon the upper surface of the bar 33 to which it may be welded or otherwise rigidly secured. It is provided with a hole 43 in alignment with the opening 34 at the outer end of the bar 33, that is, the end nearest the fascia form 13, for receiving the outermost suspension bolt 35.

The bracket 38 has a laterally projecting portion 45 formed to provide downwardly diverging

lugs

47 and 48 which engage the flange 41 of the bar 33. Formed in the lug 47is a hole 49 for receiving the upper end of the suspension bolt 29. The

lugs

47 and 48 which engage the flange 41 of the bar 33 prevent the bracket from rotating'about the upper end of the outer bolt 35.

However, in order to further secure the bracket against.

such twisting or rotational movement, the bracket may be welded to the channel bar 33.

In using the hanger assembly 11 to secure the forms 13 and 17 to the beam 15, the forms 13 and 17 are properly positioned adjacent the beam 15 with an edge of each form extending beneath the top flange of the beam. The bar 33 is then placed on the upper surface of the beam, and the suspension bolts 35 are attached to the bar, with the lower ends of the bolts 35 projecting through the ledgers 23 and 24. The nuts 36 are then tightened until the bar 33 and forms 13 and 17 are securely clamped to the upper flange of the beam.

At this pointthe bar is rigidly secured in place and the fascia form 13 is secured to the beam sufficiently well so that it will support its own weight. Accordingly, the hanger bolt 29 may be easily put in place with its upper end extending through the opening 49 of the bracket and with its lower end passing through the ledger 25.

From the foregoing, it will be apparent that the abovedescribed hanger assembly is effective in securing one end of an intermediate concrete retaining form to one side of a supporting beam and, in addition, effectively secures a fascia-supporting form to the opposite side of the beam.

The hanger assembly shown and described is superior to those previously available in that it can be manufactured with a minimum of expense, can be assembled at the site of construction easily and quickly, and is adapted for use with any of the conventional supporting beams.

Although a specific embodiment of the invention is shown and described, it will be understood that details of the construction shown may be altered Without departing from the spirit of the invention as defined by the following claim.

What is claimed is:

A hanger assembly for securing a pair of concrete retaining forms to opposite sides of a beam by means of suspension bolts, said assembly comprising a bar having a length substantially greater than the width of the beam and adapted to be supported on the top surface of the beam with its longitudinal axis disposed transversely of the longitudinal axis of the beam, said bar being provided with a pair of openings spaced horizontally from each other a distance greater than the width of the beam and disposed adjacent opposite outer edges thereof, said open ings being adapted to receive the upper ends of a pair of vertically disposed suspension bolts engageable with the retaining forms so as to clamp said bar to the beam, and a bracket secured to said bar adjacent one end thereof to maintain a hanger bolt in downwardly inclined position relative to the top surface of the beam, said bracket including a fiat plate adapted to be secured to said bar and having an opening aligned with one of the openings in said bar so as to receive one of the suspension bolts whereby said bracket is secured to said bar by said one suspension bolts, a portion of said plate projecting outwardly beyond one side wall of said bar and being formed so as to provide a downwardly inclined lug having an opening therein for receiving a hanger bolt, and a shoulder on said plate which engages said one side wall of said bar.

References Cited in the file of this patent UNITED STATES PATENTS 824,470 Dyer June 26, 1906 1,104,651 Gagnebin July 21, 1914 1,965,319 Romero July 3, 1934 2,215,972 Mueller Sept. 24, 1940 2,616,645 Kindorf et al. Nov. 4, 1952 2,736,128 Conyers Feb. 28, 1956 2,884,670 Garrison et al. May 5, 1959 2,894,119 Stenger July 7, 1959 2,905,426 Ross Sept, 22, 1959 2,985,937 Hillberg May 30, 1961 2,994,937 Williams Aug. 8, 1961 FOREIGN PATENTS 1,148,725 France June 24, 1957