3-AttachmentB Drawing ITB2026-07 4.24.26.pdf

PDF 1 MB Posted Apr 24, 2026

Attached to: Science Building Membrane Roof Replacement
Solicitation number: 2026-07
Issued by: Jackson County, Amity City, Oregon

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Written by GovTribe AI · Apr 29, 2026

Summary: Roof Membrane Replacement Bid Drawing for Southern Oregon University Science Building

This is a bid drawing attachment for Southern Oregon University's Facilities Management & Planning Department, specifically for Project ITB2026-07 regarding the Science Building Roof Membrane Replacement project located at 1250 Ashland Street, Ashland, Oregon. The project encompasses approximately 16,000 square feet of roof area across multiple sections of the Science Building, including Science I, the middle roof, and lower roof areas. The scope of work includes demolition and recycling of existing single-ply PVC membrane, installation of tapered insulation to eliminate ponding water issues, installation of 1/4-inch DensDeck over the entire roof surface, and application of new 60 mil mechanically-fastened PVC membrane. Additional work includes installation of 400 linear feet of new walk pads, replacement of metal parapet copings, installation of a new Guardian CB-12 fall protection anchor system, and lining of through-wall scuppers with new PVC membrane. The drawing includes specific details regarding equipment curbs, duct supports, abandoned duct penetrations, and membrane termination points, with general notes providing clarification on membrane removal procedures, conduit and pipe support modifications, alternative taper designs, and membrane warranty coverage extending to the outside face-of-wall.

The drawing is scaled at 3/16" = 1'-0" on a 24" x 36" plan and includes keyed notes numbered 1 through 15 referencing specific construction details and requirements throughout the roof plan. Bidders are required to field verify all dimensions and quantities prior to submitting their bids. The document serves as the primary technical specification guide for contractors to understand the full scope of work, material specifications, equipment requirements, and design considerations necessary for accurate bid preparation and project execution.

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Other files

File	Type	Posted
1-ITB2026-07 Science Roof Membrane Replacement final.pdf	PDF	Apr 24, 2026
2-AttachmentA ProjectManual ITB2026-07.pdf	PDF	Apr 24, 2026

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EXHAUST

PLENUM

RDRD

3" V

COND

3" V 2" V

PIPE

HOOD

PIPE

HOOD

COND

TANK

CURB

3" V 3" V

TANK

CURB

3" V

COND

3" V

EXHAUST

PLENUM

AHU 301 AHU 302

STORAGE/

DUMBWAITER

EXH

FANS

EXH

FANS

ENTRY

VESTIBULE

ROOF

BELOW

REPLACE

MEMBRANE

SINGLE PLY &

TAPERED IN

SUL

OVER OLD SLAB

ADD CRICKET TO ELIMINATE

PONDING WATER BETWEEN

DRAINS

SCIENCE II

NO WORK

LOW ROOF

BELOW

REPLACE

MEMBRANE

3" P

3" V

PIPE

CLUSTER

GENERAL NOTES:

KEYED NOTES

ENTRY

VESTIBULE ROOF

BELOW

REPLACE

MEMBRANE

Revisions:

AutoCAD SHX Text

1. DEMO & RECYCLE ALL PVC MEMBRANE. STRIPS OF EXISTING PINS AND PLATES DEMO & RECYCLE ALL PVC MEMBRANE. STRIPS OF EXISTING PINS AND PLATES CAN BE LEFT AND COVERED WITH NEW TAPERED. 2. ALL PENETRATIONS THROUGH THE EXISTING SINGLE-PLY SHOWN ON DRAWING. ALL PENETRATIONS THROUGH THE EXISTING SINGLE-PLY SHOWN ON DRAWING. 3. CONDUIT & PIPE ON RUBBER BLOCKS NOT SHOWN ON DRAWING. REPLACE CONDUIT & PIPE ON RUBBER BLOCKS NOT SHOWN ON DRAWING. REPLACE RUBBER BLOCKS WHERE NECESSARY TO ADJUST FOR ADDED INSULATION HEIGHT. 4. A PRELIMINARY TAPER INSULATION DESIGN IN INCLUDED IN THIS BID SET. A PRELIMINARY TAPER INSULATION DESIGN IN INCLUDED IN THIS BID SET. BIDDERS MAY USE AN ALTERNATE TAPER DESIGN PROVIDED PONDING WATER IS ELIMINATED 5. EQUIPMENT CURBS AND DUCT CURBS ARE TYPICALLY 10" TO 12" HIGH. EQUIPMENT CURBS AND DUCT CURBS ARE TYPICALLY 10" TO 12" HIGH. 6. DUCT & PIPE RACK SUPPORTS ARE EITHER 4" DIA. PIPE OR 3"X3" SQUARE DUCT & PIPE RACK SUPPORTS ARE EITHER 4" DIA. PIPE OR 3"X3" SQUARE TUBE WHERE SHOWN. 7. ABANDONED DUCT PENETRATIONS ARE SHOWN AS RECTANGLES ON THE ABANDONED DUCT PENETRATIONS ARE SHOWN AS RECTANGLES ON THE DRAWING. ABANDONED PENETRATIONS ARE WOOD FRAMED & CAPPED WITH PLYWOOD. THESE ABANDONED PENETRATIONS SHALL BE COVERED WITH NEW PVC MEMBRANE.

AutoCAD SHX Text

NORTH

AutoCAD SHX Text SCIENCE 1 - GENERAL WORK SCOPE: 1. REMOVE & DISPOSE OF EXISTING MEMBRANE. STRIPS OF OLD MEMBRANE REMOVE & DISPOSE OF EXISTING MEMBRANE. STRIPS OF OLD MEMBRANE WITH SCREWS & PLATES CAN REMAIN. 2. ADD TAPERED INSULATION TO CORRECT WATER PONDING. ADD TAPERED INSULATION TO CORRECT WATER PONDING. 3. INSTALL INCH DENSDECK OVER ENTIRE ROOF. INSTALL INCH DENSDECK OVER ENTIRE ROOF. 14 INCH DENSDECK OVER ENTIRE ROOF. 4. INSTALL NEW 60 MIL PVC MEMBRANE.INSTALL NEW 60 MIL PVC MEMBRANE.

AutoCAD SHX Text MIDDLE ROOF - GENERAL WORK SCOPE: 1. REMOVE & DISPOSE OF EXISTING MEMBRANE. STRIPS OF OLD MEMBRANE REMOVE & DISPOSE OF EXISTING MEMBRANE. STRIPS OF OLD MEMBRANE WITH SCREWS & PLATES CAN REMAIN. 2. ADD CRICKET TO CORRECT WATER PONDING BETWEEN (2) NORTH SIDE ADD CRICKET TO CORRECT WATER PONDING BETWEEN (2) NORTH SIDE DRAINS. 3. INSTALL 1/4 INCH DENSDECK OVER ENTIRE ROOF. INSTALL 1/4 INCH DENSDECK OVER ENTIRE ROOF. 4. INSTALL NEW 60 MIL PVC MEMBRANE.INSTALL NEW 60 MIL PVC MEMBRANE.

AutoCAD SHX Text

AutoCAD SHX Text REMOVE METAL PARAPET COPINGS FOR MEMBRANE REPLACEMENT. EITHER RE-INSTALL EXISTING METAL OR INSTALL NEW 24-GAUGE PRE-FINISHED METAL (CONTRACTOR'S OPTION). ROOF WARRANTY EXTENDS TO OUTSIDE FACE-OF-WALL. DEMO EXISTING MEMBRANE AND INSTALL NEW MEMBRANE ON LOWER ROOF. NO NEW INSULATION REQUIRED. DEMO EXISTING MEMBRANE AND INSTALL NEW PVC ON PENTHOUSE ROOF. NO ADDITIONAL INSULATION REQUIRED ON LOWER ROOFS. HVAC DUCT PENETRATION. SKYLIGHT. EQUIPMENT SUPPORTS ARE EITHER 4-1/2" DIA. PIPE OR 3" X 3" SQUARE TUBE WHERE SHOWN. ABANDONED HVAC PENETRATIONS, TYPICAL. COVER WITH NEW PVC MEMBRANE. PROVIDE 400 LINEAL FEET OF NEW WALK PADS IN THE BID. COORDINATE LAYOUT OF NEW WALK PADS WITH SOU PRIOR TO INSTALLATION. THROUGH-WALL SCUPPER. LINE WITH NEW PVC AND SEAL PER MANUFACTURER'S REQUIREMENTS. PROVIDE A 3 FT. X 2 FT. DEPRESSION IN THE INSULATION AT EACH SCUPPER. THE BOTTOM OF EACH SCUPPER DEPRESSION TO MATCH THE SCUPPER INVERT ELEVATION. REMOVE AND DISPOSE OF THE EXISTING CLAD METAL MEMBRANE EDGE. INSTALL NEW WHITE CLAD METAL EDGE SIMILAR TO EXISTING. INSTALL NEW GUARDIAN CB-12 FALL PROTECTION ANCHOR, SECURE TO CONCRETE SLAB WITH (8) 1/2" DIAMETER X 2 " LONG SIMPSON TITAN CONCRETE ANCHORS. 12" LONG SIMPSON TITAN CONCRETE ANCHORS. TERMINATE NEW MEMBRANE UNDER PARAPET CAP OVERHANG. INFILL VOIDS IN EXISTING CONCRETE WALL PRIOR TO INSTALLATION OF NEW MEMBRANE. INSIDE OF ALL PARAPET WALLS TO BE FULLY ADHERED. INSTALL NEW MEMBRANE UNDER ELECTRICAL CONDUIT BANK. INSTALL NEW (SHORTER) RUBBER BLOCKS WHERE REQUIRED TO OFFEST ADDED INSULATION.

AutoCAD SHX Text

AutoCAD SHX Text Scale: 3/16" = 1'-0" (24 x 36)

AutoCAD SHX Text

AutoCAD SHX Text Date:

AutoCAD SHX Text Project #: ITB2026-07

AutoCAD SHX Text Southern Oregon University

AutoCAD SHX Text Facilities Management & Planning 351 Walker Avenue Ashland, Oregon 97520 phone: 541 552 6231 www.fmp.sou.edu

AutoCAD SHX Text

1250 ASHLAND STREET, ASHLAND, OR

AutoCAD SHX Text A203

AutoCAD SHX Text

ROOF PLAN

AutoCAD SHX Text 4.24.2026

AutoCAD SHX Text

SOU SCIENCE BUILDING ROOF MEMBRANE REPLACEMENT

AutoCAD SHX Text

BID DRAWING

AutoCAD SHX Text No.

AutoCAD SHX Text Date

AutoCAD SHX Text Description

James McNamara Typewritten Text Attachment B

ITB 2026-07

Sheets and Views

SC1 ROOF_B-W FINAL-24x36

File details come from the government source that posted it. Updated May 1, 2026.