Amended Scope of Work.doc

Pasadena Roof Replacement

Rev 2-26-10

Amendments to Summary of Work

Amendment to Cool Roof Performance Specifications

A. White/White Sustainable Roof Membrane Coating

At Minimum:

1. Tensile Strength 1500 psi

2. Tear Resistance 100lbs/in.

3. Non-Volatile % (ASTM D 75) Typical 80%

4. Reflectivity greater than 0.70

5. Emittance greater than 0.75

6. VOC <47 g/l

7. Wet film thickness 32mils Note: some roof section may require consideration for reducing glare. Coloration for these roof sections are to be determined.

Amendment SRI Rating Change:

Amendment to Part 2 Products, 2.1:

The roof systems shall be a sustainable design; the roof systems should contribute points for recycled content and reducing urban heat Island effect via a cool roof system that meets Title 24 Cool Roof requirements and has Solar Reflective Index of 78. This roof system shall be engineered per IBC for ASCE 7-5 wind up lift and is a Class A fire rated roof assembly.

SPECIFIC LOCATION AMENDMENTS:

Clock (water) Tower Ledge (C)

1. See attached section of related report. “Pasadena Roof Assessment – Clock (Water) Tower Ledge”

Clock (Water) Tower (B)

1. No cool roof required.

2. Install surface mounted counter flashing on parapet walls.

Triangle EPDM roof (D)

1. Demolition and removal to south side of building.

2. Demolition may only be available on weekends. (may increase cost due to prevailing wage weekend rates)

3. Reglet will not be raised on the south facing wall.

4. Extra Safety Measure? Should meet at a minimum OSHA requirements for Safety.

Lower front roof section (H)

1. Add additional modified bitumen roof section to the north of existing section (H), this section to be called section (I). This section to be inclusive of bid.

2. Is this area sensitive to noise? This specific area is event based and can be scheduled. However, we do have court spaces to coordinate as well. PMs and building management will coordinate with the contractor(s). Building is 100% occupied.

Flood and Gravel roof section (F&G)

1. Add additional modified bitumen roof section and EPDM roof section to the east and west of existing section (F&G), this section to be called section (J1, east section) and (J2 & J3 West section). These sections to be inclusive of bid.

2. Install new metal coping cap per ASNI/SPRI ES1 tested per code requirements.

EPDM (E) Suite 200 (see photos below)

1. Install drip edge at open railings in parapet wall.

2. Transition between lower and upper roof need to have a proper drip edge and surface mounted counterflashing. Do not roof up and over parapet wall.

3. New surface mounted counterflashing must be installed on the north wall.

4. Attachments are for this roof section. (see below photos)