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The Adjust-A-Web Framing System is an engineered system that is most versatile and Field Friendly adjustable framing system available. This Patented system gives you the ability to install virtually any new roof configuration (metal, wood, tile, etc.) onto an existing roof, and with new roof slopes from 1/4:12 to 12: 12 or greater.

The Adjust-A-Web Framing System is provided with complete engineered shop drawings (including Definition of the existing conditions, chalkline drawing, top and bottom member layouts, standard and special details of special conditions and notations on points of concern.) along with formal calculations and P.E. seals, when required. All material and fasteners* to assemble the framing system are provided and delivered to jobsite.

*Connections of the roof panel to the framing system and of the framing system to the existing structure typically are to be designed and provided by others.

The Adjust-A-Web Framing System is composed of the appropriate bottom members, factory cut vertical web members, adjustable top clips, top members (purlin), lateral & longitudinal strap bracing, all permanent bracing, eave members, required fascia & soffit framing, required equipment supports, gable end subgirts, etc. and the self-drilling fasteners to assemble the system.

The following are brief outlines and Illustrations of the major components and hoe they are used. This information depicts configurations that have been successfully used on various projects in the past. It is the responsibility of the user of this information to determine the applicability of these ideas to any particular new situation and to determine appropriate member sizes, gauges connections, etc. to address the design conditions and limitations of that specific project.

CURA Adjust-A-Web Bay with Short Bottom Members (BM)

The Short Bottom Member (BM) is typically a short 2" X 2" angle (less than 18" long). It is used directly over existing structural elements, when the existing built up roof has enough compressive strength to withstand the loads transmitted by the Short Bottom Member or when the existing built up roof is removed down to solid deck (metal deck or concrete). The Short Bottom Member will rest on the built up roof or solid deck and in either case will be attached directly into the underlying structural member (beams, bar joist or structural concrete).

Spreader Plates (SP) can be used to reduce the compressive load if the existing built up roof does not have adequate compressive strength.

The Short Bottom Member is attached to the Vertical Web Member (VWM) and the VWM is attached to the Top Member (TM) with an adjustable Top Clip (TC). (See other details for attachment and adjustable features.) These "post" assemblies are placed in a staggered pattern over the existing roof to spread the transferable loads into the existing roof structure with minimum change to the existing structural loading.

Longitudinal Strap Bracing (S2) is installed at one location in each Adjust-A-Web run for longitudinal bracing of the top member.

The Continuous Bottom Member (CBM) is laid parallel to the new roof Top Member and is typically a roll-formed LGSI ZEE shape with a web between 4" and 8" and made from a minimum of 16 Ga. 55 KSI steel. It is used when the existing structure is inadequate to use the Short Bottom Member and the roof loads must be spread over several existing roof structural members (i.e.:small bar joist with less than 4'-0" spacing, wood joists, lightweight concrete with bulb tees, etc.). The Continuous Bottom Member is also often used when the existing structural members are spaced over 6'-0" apart. The Continuous Bottom Member rest on the built up roof, solid deck existing structural members and attach directly into the underlying structural member, while the "post" assembly is attached to the CBM's (not directly over the existing structural members) generally in a staggered pattern.

The Cross Directional Bottom Member (CD) is laid perpendicular to the new roof Top Member and its typically a roll-formed LGSI ZEE shape with a web between 4" and 8" and made from a minimum of 16 GA. 55 KSI steel. It is used when the existing structural members are parallel to the new Top Members.

The Cross Directional Bottom Member rest on the built up roof, solid deck or existing structural members and spans across and attaches into the existing structural members (each CD must extend at least 6" beyond the existing structural member that is past the last "post" assembly). The "post" assembly is attached to the CD's (not directly over the existing structural members) in an inline pattern.

The standard 16 Ga. Top Clip (TC) provides a height adjustability of +/-3" while aligning the Top Member to the new slope and transferring the structural load between the Top Member and the Vertical Web Member. This Top clip is used in the main field of the roof.

The 16 Ga. Short Top Clip (TCS) provides a height adjustability of +/-2" while aligning the Top Member to the new slope and transferring the structural load between the Top Member and the Vertical Web Member. This Top Clip is used when the row height is constricted and for other special applications.

The Top Member (TM) is typically a roll-formed LGSI ZEE shape with a web between 4" and 18" and made from a minimum of 16 Ga. 55 KSI steel. The TM runs unbroken for up to 15'-0". TM is shipped is a maximum of 30'-0" lengths (for ease of handling) and will be overlapped for structural integrity.

When the Top Member run is greater than 150'-0" or there is an existing expansion joint in the existing structure, an expansion joint splice (EJS) is required.

The Eave Member (EM) is typically a cold formed shape with a web between 4" and 8" and made from a minimum of 16 Ga. 55 KSI steel. It is normally fastened to the edge of the existing structure at the best structural location.

The Lateral Strap Bracing (S1) is typically 22 / 24 Ga. Continuous strap and is fastened to the Eave Member and runs continuous over the bridge and is fastened to the Eave Member on the far side. It passes over the ridge at the Top Clip connections to the Top Member. S1's are normally spaced at the same spacing as the Vertical Web Members, but the spacing is determined by the design requirements of the specific job.

Outrigger (OR) is typically a roll-formed LGSI ZEE or CEE shape with a web between 4" and 8" and made from a minimum of 16 Ga. 55 KSI steel. And is used to position a new eave past the edge of the existing structure. Continuous Soffit Angle (SA) is typically a roll-formed 2" x 2" - 14 Ga. angle and is used when required, to provide a fastenable surface for the new color trim and panels.

The Valley Angle (VA) is made with two piece, 14ga. construction and is fastened to the Top Member. The VWM will not be farther than 1' - 6" from the valley centerline.

The Hip Angle (HA) is one peice, 14ga construction and is fastened to the Top Member. The VWM will not be farther than 1' - 6" from the valley centerline. The Lateral Strap Bracing (S1) is fastened to the Top Member through the Hip Angle and continues down to the Eave member.

CURA Adjust-A-Web Hip Condition