US20070193130A1 - Building truss - Google Patents
Building truss Download PDFInfo
- Publication number
- US20070193130A1 US20070193130A1 US11/340,225 US34022506A US2007193130A1 US 20070193130 A1 US20070193130 A1 US 20070193130A1 US 34022506 A US34022506 A US 34022506A US 2007193130 A1 US2007193130 A1 US 2007193130A1
- Authority
- US
- United States
- Prior art keywords
- joist
- portions
- truss
- rafters
- sidewalls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
- E04C3/17—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with non-parallel upper and lower edges, e.g. roof trusses
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
- E04B7/022—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames
Definitions
- the height of a garage roof (i.e., from the floor of the garage to the rafters and joist 20 ) can be substantially greater than is necessary for vehicle storage and other uses. As a result, there is a substantial amount of wasted headroom within many garages due to grading and other factors at the construction site.
Abstract
A truss for a roof of a building structure includes a lower span having first and second horizontal joist portions on opposite ends of the truss. The first and second joist portions are adapted to be placed on upper ends of first and second sidewalls of a structure and with the first and second joist portions extending toward one another in substantially linear alignment. The first and second joist portions have a combined length less than a distance between the sidewalls. At least a third joist portion is disposed between opposing ends of the first and second joist portions and beneath a plane defined by the first and second joint portions. The third joist portion extends parallel to and spaced from the first and second joist portions. A first bracing member connects a first end of the third joist portion to a first joist portion. A second bracing member connects a second end of a third joist portion to the second joist portion. A plurality of rafters are connected to the lower span and connect at an angle thereto to define a ridge above the third joist portion. A plurality of braces connect the joist portions and the rafters in a pattern leaving a substantially unobstructed area above the third joist portion.
Description
- 1. Field of the Invention
- This invention pertains to trusses for fabricating the roof of a building. More particularly, this invention pertains to a truss to provide enhanced storage beneath the roof of a structure.
- 2. Description of the Prior Art
- Trusses are well known in the construction trade. A truss is a prefabricated structure to be used in forming the roof of a building. Commonly, a truss includes ceiling joist which is a horizontal member having a length sufficient for ends of the joist to bear on opposing walls of a structure. Rafters extend up from the opposite ends of the joist and terminate at a ridge line usually above the center line of the joint. A trust will also include a plurality of bracing members which brace the members to the joists and which are fastened in place by metal braces.
- Not uncommonly, trusses are designed to have a central area which is generally unobstructed so that when a roof structure is completed, the unobstructed areas of the trusses are aligned to create an unobstructed volume which can be used either as an additional room or for storage space. Such storage space trusses are particularly useful above a garage to provide additional storage space for seasonal items. Unfortunately, not all trusses can provide adequate storage space. For example, the amount of the height of the storage area as well as its volume are highly dependent upon factors such as the span of the joist and the pitch of the roof. It is an object of the present invention to provide a truss for such limited environments which provides an enhanced headroom within the storage area.
- According to the preferred embodiment of the present invention a truss is disclosed for a roof of a building structure where the structure has opposing first and second sidewalls terminating in an upward elevation. The truss includes a lower span. The lower span has first and second horizontal joist portions on opposite ends of the truss. The first and second joist portions are adapted to be placed on upper ends of the first and second sidewalls and with the first and second joist portions extending toward one another in substantially linear alignment. The first and second joist portions have a combined length less than a distance between the sidewalls. At least a third joist portion is disposed between opposing ends of the first and second joist portions and beneath a plane defined by the first and second joint portions. The third joist portion extends parallel to and spaced from the first and second joist portions. A first bracing member connects a first end of the third joist portion to a first joist portion. A second bracing member connects a second end of a third joist portion to the second joist portion. A plurality of rafters are connected to the lower span and connect at an angle thereto to define a ridge above the third joist portion. A plurality of braces connect the joist portions and the rafters in a pattern leaving a substantially unobstructed area above the third joist portion.
-
FIG. 1 is a front elevation view of a prior art truss showing an unobstructed area beneath a ridge of the truss; -
FIG. 2 is the view ofFIG. 1 showing a person within the unobstructed area but constrained to stand at less than full height within the unobstructed area; -
FIG. 3 is a structure with a roof formed from the trusses ofFIG. 1 ; -
FIG. 4 is a front elevation view of a truss according to the present invention; -
FIG. 5 is the view ofFIG. 4 showing a person able to stand at full height within the unobstructed area of the truss ofFIG. 4 ; and -
FIG. 6 is a structure with a roof fabricated with trusses according to the present invention. - With initial reference to
FIGS. 1 through 3 , aprior art truss 10 is shown with placement on a structure such as agarage 12 inFIG. 3 . Thegarage 12 includessidewalls upper elevation upper elevations upper ends - The roof of the
structure 12 is formed by a plurality oftrusses 10 aligned in parallel alignment and sheathed with aroofing material 18 to provide weather-tight sealing of the roof. Thetrusses 10 are conventional prior art trusses designed to create a storage space. The truss includes aunitary joist 20 having a length L equal to or greater than the distance between thesidewalls -
Rafters joist 20 extend upwardly at an angle to meet at aridge point 26 which, in the example shown, resides substantially above the center of thejoist 20. A plurality ofvertical braces 28 through 31 extend between the rafters and thejoists 20. Alsoangular braces joist 20 at the intersection of therafter braces joist brace 34 extends between thevertical trusses ridge 26. - The intersection of all members (i.e., rafters, braces and joists) are connected by
metal plates 50 covering both intersecting members and including fasteners such as nails to complete the joinder of the members at the intersection. - It will be noted there are no angular or other rafters within the
area 36 defined bybraces joist 20. Accordingly, this area is an unobstructed area such that when a plurality of trusses are placed in parallel alignment on a structure as shown inFIG. 3 , theunobstructed area 36 combines to create an unobstructed volume which may be used for storage, occupation or the like. - The amount of headroom (i.e., the distance between
joist 34 and joist 20) varies with the length of the span of thejoist 20 as well as the pitch of therafters - For roofs with very low pitch or a short span L, the amount of headroom can be quite small such that an occupant cannot stand within the space as illustrated in
FIGS. 2 and 3 with the silhouette of a human H crouching in response to the restricted headroom. - In certain construction sites, the height of a garage roof (i.e., from the floor of the garage to the rafters and joist 20) can be substantially greater than is necessary for vehicle storage and other uses. As a result, there is a substantial amount of wasted headroom within many garages due to grading and other factors at the construction site.
- The present invention is directed to a truss which is particularly applicable for such situations which can increase the amount of headroom within a storage space but without altering the length or pitch of any truss. Such a truss is shown in
FIGS. 4 and 5 and combined to form a completed roof inFIG. 6 . - In
FIG. 4 , thetruss 100 includes a lower span 102. The lower span includes a first horizontal member orjoist portion 104 and a secondhorizontal joist portion 106. The first and secondjoist portions upper ends second sidewalls structure 12 with the first and secondjoist portions - The first and second
joist portions sidewall structure 12. A third joist portion 108 (substantially the same length as header joist 134) is positioned between the opposing ends of the first and secondjoist portions joist portions - A first bracing
member 110 connects a first end of the third joist portion to the first joist portion 102. A second bracing member 112 connects a first end of thethird joist portion 108 to thesecond joist portion 106. -
Rafters second joist portions 102, 106 to meet to define aridge point 126 above athird joist portion 108. A plurality of braces includingvertical braces joist portions rafters - Triangular or
angled braces 133 extend from the first and second joist portions to the intersection of therafters vertical braces vertical rafters vertical brace 130 connects with the third joist portion and thesecond joist portion 106. - A
horizontal brace 134 extends between thevertical braces horizontal brace 134 and thethird joist portion 108 defines a headroom and anunobstructed area 136. As shown inFIG. 5 , by lowering a portion of the lower span by the addition of thethird joist portion 108, the headroom can substantially be increased to permit a person to stand in a full upright position within theunobstructed area 136 and without the need to alter either the total span of the truss or the pitch of the truss. - While headroom in the garage itself is sacrificed to accommodate this increase in headroom in the truss, many garages today are being built with substantially excess headroom due to grading constraints and other factors. When the
trusses 100 of the present invention are aligned in a common roof as shown inFIG. 6 , a substantial volume can be added above a garage or other structure for storage, occupation or the like without the need to alter the aesthetic benefits of a particular truss span and pitch. - It has been shown how the objects of the present invention have been attained in the preferred embodiment. Modification and equivalents of the disclosed concepts are intended to be included within the scope of the appended claims.
- The above specification, examples and data provide a complete description of the manufacture and use of the composition of the invention. Since many embodiments of the invention can be made without departing from the spirit and scope of the invention, the invention resides in the claims hereinafter appended.
Claims (4)
1. A truss for a roof of a building structure having opposing first and second sidewalls terminating at an upper elevation, said truss comprising:
a lower span including:
first and second horizontal joist portions on opposite ends of said truss with said first and second joist portions adapted to be placed on upper ends of said first and second sidewalls and with said first and second joist portions extending toward one another in substantially linear alignment;
said first and second joist portions have a combined length less than a distance between said sidewalls;
at least a third joist portion disposed between opposing ends of said first and second joist portions and beneath a plane defined by said first and second joist portions and extending parallel to and spaced from said first and second joist portions;
a first bracing member connecting a first end of said third joist portion to said first joist portion;
a second bracing member connecting a second end of said third joist portion to said second joist portion;
a plurality of rafters connected to said lower span and connected at an angle thereto to define a ridge above said third joist portion;
a plurality of braces connecting said joist portions and said rafters in a pattern leaving a substantially unobstructed area above said third joist portion.
2. A truss according to claim 1 comprising a cross member between said braces and rafters above said third joist member and spaced therefrom to define an unobstructed area.
3. A truss according to claim 1 wherein said rafters and joist portions define a truss plane.
4. A roof comprising:
a. a plurality of trusses having:
i. a lower span including:
1. first and second horizontal joist portions on opposite ends of said truss with said first and second joist portions adapted to be placed on upper ends of said first and second sidewalls and with said first and second joist portions extending toward one another in substantially linear alignment;
2. said first and second joist portions have a combined length less than a distance between said sidewalls;
3. at least a third joist portion disposed between opposing ends of said first and second joist portions and beneath a plane defined by said first and second joist portions and extending parallel to and spaced from said first and second joist portions;
4. a first bracing member connecting a first end of said third joist portion to said first joist member;
5. a second bracing member connecting a second end of said third joist portion to said second joist member;
ii. a plurality of rafters connected to said lower span and connected at an angle thereto to define a ridge above said third joist portion;
iii. a plurality of braces connecting said joist portions and said rafters in a pattern leaving a substantially unobstructed area above said third joist member;
b. said trusses disposed in parallel alignment with said unobstructed areas of said trusses defining an unobstructed volume.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/340,225 US20070193130A1 (en) | 2006-01-26 | 2006-01-26 | Building truss |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/340,225 US20070193130A1 (en) | 2006-01-26 | 2006-01-26 | Building truss |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070193130A1 true US20070193130A1 (en) | 2007-08-23 |
Family
ID=38426696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/340,225 Abandoned US20070193130A1 (en) | 2006-01-26 | 2006-01-26 | Building truss |
Country Status (1)
Country | Link |
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US (1) | US20070193130A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8528268B1 (en) | 2010-12-02 | 2013-09-10 | Component Manufacturing Company | Trilateral bracing structure for reinforcing a building frame structure |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US60848A (en) * | 1867-01-01 | Edmund beckee | ||
US146114A (en) * | 1873-12-30 | Improvement in roof-trusses | ||
US3429091A (en) * | 1967-05-01 | 1969-02-25 | Josef Dundr | Long span structures |
US4439959A (en) * | 1981-04-15 | 1984-04-03 | Robert Helfman | Residential building construction |
US4890427A (en) * | 1984-06-29 | 1990-01-02 | Rayburn Lee W | Roofing framework |
US5722210A (en) * | 1995-12-28 | 1998-03-03 | Trus Joist Macmillan, A Limited Partnership | Modularized truss |
US6481176B2 (en) * | 2000-12-18 | 2002-11-19 | Jeffrey M. Snow | Storage roof truss |
US20050137965A1 (en) * | 2003-12-17 | 2005-06-23 | Fisk Jeffery A. | Business method involving home construction using attic trusses to enhance appraised value, mortgaging appraised value with a less-than-fully-amortized loan and investing the surplus and normal principal pay-down amount |
-
2006
- 2006-01-26 US US11/340,225 patent/US20070193130A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US60848A (en) * | 1867-01-01 | Edmund beckee | ||
US146114A (en) * | 1873-12-30 | Improvement in roof-trusses | ||
US3429091A (en) * | 1967-05-01 | 1969-02-25 | Josef Dundr | Long span structures |
US4439959A (en) * | 1981-04-15 | 1984-04-03 | Robert Helfman | Residential building construction |
US4890427A (en) * | 1984-06-29 | 1990-01-02 | Rayburn Lee W | Roofing framework |
US5722210A (en) * | 1995-12-28 | 1998-03-03 | Trus Joist Macmillan, A Limited Partnership | Modularized truss |
US6481176B2 (en) * | 2000-12-18 | 2002-11-19 | Jeffrey M. Snow | Storage roof truss |
US20050137965A1 (en) * | 2003-12-17 | 2005-06-23 | Fisk Jeffery A. | Business method involving home construction using attic trusses to enhance appraised value, mortgaging appraised value with a less-than-fully-amortized loan and investing the surplus and normal principal pay-down amount |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8528268B1 (en) | 2010-12-02 | 2013-09-10 | Component Manufacturing Company | Trilateral bracing structure for reinforcing a building frame structure |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |