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June 21, 2017 D R A F T Proposal for
Architectural Services for
Emergency Plaster Stabilization Survey and Cleaning Specifications for Fair Park, Dallas, Texas
Proposal is for Architectural design and consulting services by Quimby McCoy Preservation Architecture, LLP (QMc) for the City of Dallas (the Owner).
1.0 SCOPE
The Architect (Consultant) area and scope shall consist of an Emergency Plaster Stabilization Survey for the plaster-faced historic buildings at Fair Park that have not been recently improved or repaired. Many of these buildings have been the subject of deferred maintenance since their restoration in the late 1990’s, while others were restored more recently or have not been restored in the past 20 years. These buildings exhibit different degrees of plaster failure including extensive cracking, plaster delamination, displacement, losses and impending losses. This effort is intended as a park-wide survey that will identify the plaster conditions that can be characterized and considered for emergency plaster stabilization work similar to that which has been identified for one façade of the Sheep and Goat and Pan American Arena building, and will be undertaken by the City of Dallas department of Equipment and Building Services (EBS) with a Job Order Contract. This survey will address conditions, not root causes, and stabilization actions, not restoration or repair involving corrective measures addressing the cause of the plaster conditions. EBS will be able to use the Survey in combination with EBS’ JOB unit prices from the Sheep and Goat façade project, to obtain estimates on the cost of further plaster stabilization work at Fair Park. In addition to the Survey, a specification for the cleaning of the historic plaster (with Latex, elastomeric or EIFS finishes and with Mineral Based Coating systems) that can be used by EBS with a JOB to obtain appropriate cleaning services will be provided. Completion of plaster repairs is recommended before cleaning work begins. 1.1 A construction budget has not been established and is not part of these
services.
1.2 Basic Services shall consist of the following phases of work: 1.2.1. Task 1: Surveyt 1.2.2 Task 2: Cleaning Specifications
1.3 Reimbursable Expenses shall consist of the following items:
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1.3.1. Not applicable.
1.4 Additional Services shall consist of the following items: 1.4.1. Not applicable.
1.5 Consultant shall utilize the City’s CapPro project management software. 2.0 BASIC SERVICES
The Consultant services shall consist of one phase described in Paragraph 2.1 – 2.2 as follows: 2.1 Task 1: Survey
2.1.1 Photograph facades and incorporate them into a drawing format
(81/2 x 11 or 11 x 17 is anticipated) for survey purposes. 2.1.2 Conduct survey from the ground and document conditions
requiring stabilization on the photographs for the following buildings: 2.1.2.1 Centennial Building. 2.1.2.2 Food and Fiber Building. 2.1.2.3 Maintenance Building. 2.1.2.4 Poultry Building. 2.1.2.5 Remainder of Pan American Arena. 2.1.2.6 Remainder of Sheep and Goat Building 2.1.2.7 Mounted Police Building. 2.1.2.8 Swine Building. 2.1.2.9 Creative Arts Building. 2.1.2.10 Embarcadero Building. . 2.1.2.11 Tower Building. 2.1.2.12 Bandshell 2.1.2.13 Aquarium Annex 2.1.2.14 Magnolia Lounge 2.1.2.15 Hall of Religion 2.1.2.16 Portland Cement House (within the Texas Discovery
Gardens grounds) 2.1.3 Utilize a lift at selective areas to better visually observe conditions.
A hands-on detailed assessment involving sounding of plaster and measuring of crack depth and width over the entire wall surface – as was undertaken at the Sheep and Goat Building – will not be undertaken as part of this effort. Areas where such a detailed assessment would be advisable will be identified however for future study. Selective areas will be given additional visual and where possible, hands-on attention in order to extrapolate information about the conditions at the building as a whole. .
2.1.4 Prepare a summary report of the assessment work illustrated with photographs. The Survey will include conditions considered relevant to plaster stabilization including:
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2.1.4.1 Significant cracks (1/8 inch width or greater). 2.1.4.2` Displacement of plaster surface. 2.1.4.3 Evidence of delaminated plaster or voids. 2.1.4.4 Plaster losses and impending losses. 2.1.5 The entrances are constructed of concrete, and other historic
plaster buildings such as the Women’s Museum and the Cotton Bowl are not included because of recent repairs or lack of evidence of plaster stabilization needs.
2.1.6 Deliver draft report for review and comment. 2.1.7 Attend one meeting to discuss findings and draft comments,
potentially with JOB Contractor. 2.1.8 Deliver final report.
2.2 Task 2: Cleaning Specifications 2.2.1 Prepare technical plaster cleaning specifications for the two primary
materials found on historic plaster in the park. 2.2.2 Deliver draft specification section for review and comment. 2.2.3 Deliver final specification. 2.3 Deliverables
Deliverables shall include two printed copies of the final document in 81/2 x 11 format (may include photographs in 11 x 17 format, tbd) and a digital (PDF) file. .
3.0 Consultant Team
The consultant team shall include: None.
4.0 Schedule
Work shall be performed in accordance with the following schedule, anticipating a Notice to Proceed in July, 2017. Task 1: Plaster Stabilization Survey July – September, 2017 Task 2: Cleaning Specification July, 2017
5.0 Fees 5.1. Basic Services
For the Basic Services outlined above, the Owner agrees to pay Consultant a fee of forty thousand dollars and no cents ($40,000) to be billed monthly as a percentage of the work completed. Breakdown of Fee by Task: Task 1 (includes lift rental) $ 37,000 Task 2: $ 3,000 TOTAL $ 40,000
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5.2. Reimbursable Expenses are not anticipated.
Printing of the draft report x 5 copies is included. 3 copies of the final
report are also included, in addition to the digital file. Rental of a projecting platform scissor lift for one week is included.
5.3. Additional Services Additional services must receive written authorization from the Client before being performed. The following hourly rates will be utilized for additional services for future supplemental agreements:
Principal $210
Senior Architect $155
Architect $125
Conservator $115
Intern Architect $ 90
6.0 Limitations
Limitations to the work are as follows: 6.1 Measured drawings and detailed surveys are not included. The
documentation will make use of photographs. 6.2 Hazardous materials are not addressed. 6.3 Dallas Landmark Commission and Texas Historical Commission
approvals are not included. 6.4 A detailed, hands-on assessment is not included. This effort is intended to
provide an order of magnitude understanding of plaster stabilization needs by building in order to provide direction for future and further study and costing.
6.5 Research, which may be needed in order to identify the causes of each building’s condition, is not included. The cause of each condition will not be defined in this Survey.
6.5 Design of protection for the public in the interim period prior to completion of the stabilization work is not included.
Principal
Quimby McCoy Preservation Architecture, LLP
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quimby mccoy preservation architecture, llpc
date
title
revisions
Quimby McCoy Preservation
Architecture, LLP
3200 Main Street #3.6
Dallas, Texas 75226
Ph: 214.977.9118
A1.1
06/14/17
SCALE:
SOUTH ELEVATION KEY
01 NTS
TABLE OF CONTENTS
SECTION SECTION NUMBER TITLE
© 2015, SpexPlus, Inc. TOC-1 Table of Contents 1Q 2015
TECHICAL SPECIFICATIONS – OUTLINE 06-21-17 DIVISION 01 - GENERAL REQUIREMENTS 01 2200 Unit Prices 01 2300 Alternates Alternate No. 1 DIVISION 09 - FINISHES 09 2400 Portland Cement Plastering Part 1 - General Mock up of each type of repair for approval Part 2 – Products Anchors Hilti Adhesive Anchor Helifix Dry Mechanical Pin Portland Cement Lime Aggregate (sand) Bonding agent Premixed patching compound – check Jahn M70 or equal Metal lath Reinforcing fabric Water Part 3 - Execution Removal of loose plaster (Alternate No. 1) Reattachment of loose plaster to hollow clay tile substrate (Hilti adhesive anchor) Reattachment of loose plaster to solid brick substrate (Masonry pin) Crack repair Bonding agent Reinforcing fabric Steel lintel cleaning (Alternate No. 1) Patching Bonding agent Lathe Cleaning 09 2500 Mineral Based Coatings Keim or equal (Alternate No. 1) 09 XXXX Painting Latex
TABLE OF CONTENTS
SECTION SECTION NUMBER TITLE
Table of Contents TOC-2 © 2015, SpexPlus, Inc. 1Q 2015
END OF TABLE OF CONTENTS
PRODUCT DATA SHEET – PDS/DSP01
For full Product Information, Case Studies anddownloadable Repair Details, giving specificationsfor many common structural faults, go to:
www.helifix.com/products/retrofit-products/dryfix-stucco-pinning
Features�&�Benef i ts• Stainless steel helical pin, Grade 304 or 316
• Quick, economical and easy to install
• Requires no grouts, resins or expansion devises
• Avoids tearing off and re-stuccoing
• Avoids chemical anchoring with large pins
• Resists wind loads and ground vibrations
• Effective in all common building materials
• Clean finish / Minimal visual impact
DryFixStuccoPin
Dry mechanical pinningsystem for securingseparated stucco
Appl icat ions• For re-pinning separated, unstable and potentially
dangerous loose stucco which is typically 1” to2” thick but can vary greatly from ½” to 3”
• Suitable where buildings are coated with a hardstucco, keyed to the back-up material by meansof a splatter dash application, which is thenpainted or covered with small tiles to achieve awaterproof finish
StuccoPin being power-driven into pilot hole
Insta l lat ionProcedures1. Carefully drill an appropriate diameter
pilot hole through the stucco and into theback-up substrate, to predetermineddepth, using a rotary percussion drill(3-jaw-chuck-type)
2. Load the StuccoPin into the specialDryFix Power Driver Attachment fittedto an electric hammer drill (SDS type)
3. Power-drive the StuccoPin into positionuntil its outer end is recessed below theface of the stucco by the Power DriverAttachment
4. Finish over the entry hole with matchingmaterials or sealed as required.
NOTE: StuccoPins can also be installed
horizontally at 90° to the face of the stucco
PRODUCT DATA SHEET – PDS/DSP01
Technical �Speci f icat ionsMaterial: Austenitic stainless steel Grade 304 or 316
Diameter: 8mm
Length: Stucco thickness + any void + 2” into back-up material
Diameter of pilot hole: 5mm (determined by on-site testing)
Depth of pilot hole: Length of StuccoPin + ½”
Typical spacing: 16” x 16” in a staggered pattern. Varied at the discretion of the specifierto suit site conditions
Bonding agent: Normally none required
Typical Load Performance Characteristics: Embedment (in”) Max Load (lbs)
0.500 233
0.750 615
1.000 675
1.125 675
RecommenDeD tooling
For drilling pilot hole: Rotary percussion 3-jaw-chuck drill
For installing StuccoPin: Power Driver Attachment fitted to an SDS Rotary hammer drill.StuccoPins are recessed 2mm as standard but Power Driver Attachmentsare available for a flush finish, 8mm recess or 20mm recess
1. 2.
3. 4.
A division of HALFEN USA Inc. • P.O. Box 547
Toll Free: 888-992-9989 • Fax: 877-683-4910
www.helifix.com October 2013
Converse, TX 78109 • [email protected]
Most expensive product is HY70 , but HY10 PLUS is fine for us but also requires a Hilti gun and HFX can be used with a standard caulk gun but is out of stock right now.
Specify with a #14 screw with flat head and with a washer approx 1 inch in diameter. The Hilti insert is made for a ¼ inch diameter rod. A pilot hole may need to be drilled first, then the plastic insert is installed through to the clay tile substrate. Then adhesive is shot into the insert. The red sleeve is then pushed into the insert, which pushes the adhesive out to form globs around the outside of the insert – this acts as a toggle in the hollow clay tile. Then the screw goes into the red sleeve with a washer. Should be able to set the head of the screw – which needs to be specified to be flat – and the washer directly on top of the plaster. We could use white plastic washer? Could use PTFE washer by Phoenix.