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Wiss, Janney, Elstner Associates, Inc.
311 Summer Street, Suite 300
Boston, Massachusetts 02210
617.946.3400 tel www.wje.com
MEMORANDUM September 18, 2019
Cranes 62 and 65 Design Services for Construction Documents
Crane Inventory - Draft
WJE PROJECT NO. 2017.3665.1
IDIQ CONTRACT
NO.
P15PC00035, Task Order 140P2019F0148, PMIS No. BOST - 163343
TO Mark Wagner, DBB
FROM David Schnerch
As part of the repair design scope for the two 1940s American Hoist & Derrick American Revolver R-15 gantry cranes, Crane 62 and 65, located at the Charlestown Navy Yard, WJE performed a survey of salvaged components from an identical demolished crane. The identical crane was demolished in 2014 by the Navy and remaining salvaged parts are stored behind Building 10 at the Charlestown Navy Yard. WJE performed the survey on September 10, 2019 and identified the following components:
Item Identified Quantity Technical Part Name Part Number Figure Numbers
Hook Assembly (Timken Roller
Brg. Type, 20 ton capacity)
1 3 1/2 inch Swivel Hook 36483
Figure 1, Figure 2
1 Swivel Hook B-4574-H
1 Collar 36483-5
Double Block Assembly (1 inch rope, 50 ton capacity)
1 34 inch Double Block 36388
Figure 3, Figure 4
1 34 inch Diameter Sheaves CS255582-B
2 Steel Side Plates -
Ladders 2 Ladder for Gantry 54271 Figure 5, Figure 6
Capacity Chart 2 - - Figure 7
Truck Assemblies (Fixed and
Adjustable)
2 Fixed, 2 Adjustable
Truck Assembly 53815
Figure 8, Figure 9
4 Truck Frame Assembly 53333
4 Gear Guard Assembly 35432
4 Truck Center Plate 36361
2 Truck Center Plate Yoke B-6346 Figure 10, Figure 11
There is no hook and double block assembly currently installed on Crane 65. Similarly, the two gantry ladders are not installed on Crane 65. These salvaged elements could be used for Crane 65, but there are inherent safety issues with both given that the hook may be a fall hazard and the ladders if not properly locked allow access to the car body.
Elements of the trucks are damaged or missing on both Crane 65 and 62 and those elements could be salvaged from the truck assemblies from the dismantled crane. The capacity chart is in place on Crane 62, but is in poor condition and on Crane 65 there is no capacity chart. The two salvaged charts could be installed or used to restore the existing chart on Crane 62.
EXHIBIT 05
MeMorandum | WJE No. David Schnerch | September 18, 2019 Page 2
FIGURES
Figure 1. Salvaged 3 1/2 inch Swivel Hook
Figure 2. Part drawing for the 3 1/2 inch Swivel Hook
MeMorandum | WJE No. David Schnerch | September 18, 2019 Page 3
Figure 3. Salvaged 34 inch Double Block
Figure 4. Part drawing for the 34 inch Double Block
MeMorandum | WJE No. David Schnerch | September 18, 2019 Page 4
Figure 5. Salvaged Ladders
Figure 6. Part drawing for Ladders
MeMorandum | WJE No. David Schnerch | September 18, 2019 Page 5
Figure 7. Salvaged portal crane capacity chart
MeMorandum | WJE No. David Schnerch | September 18, 2019 Page 6
Figure 8. Salvaged Trucks
Figure 9. Part drawing for Truck Assembly
MeMorandum | WJE No. David Schnerch | September 18, 2019 Page 7
Figure 10. Salvaged Truck Center Plate Yoke
Figure 11. Part drawing for Truck Center Plate Yoke
| 00 00 01_Cover, NPS_Crane Stabilization_Boston_SEALED |
| 00 00 02_TOC_MF04_5-12-17 - BOST - 163343 |
| 00 01 15 - List of Drawing Sheets_D |
| 00 31 26 - Existing Hazardous Mataerial Information_D |
| 00 31 26_Exhibit 01-Haz Mat report |
| 1.0 Executive Summary |
| 1.1 Asbestos |
| 1.2 Lead Determination |
| 2.0 Asbestos Containing Materials Survey |
| 2.1 Sampling Methodology |
| 2.2 Asbestos Containing Materials |
| Table 1: Summary of Identified ACM |
| Table 2: Summary of Non-ACM |
| 2.3 Analytical Method |
| 2.4 Consideration for Hidden Materials |
| 2.5 Recommendations |
| 3.0 Lead Paint Determination |
| 3.1 Summary of Findings |
| Table 3: Lead Paint Testing Results by SOP Based on SW846-7420/3051 |
| 3.2 Regulatory Implications and Regulations |
| 3.3 Cost Estimates |
| 01 11 00 - Summary of Work |
| 01 11 00_Exhibit 02-Original dwg |
| BOST_457_62929_[188035]pg0001 |
| BOST_457_62929_[188035]pg0002 |
| BOST_457_62929_[188035]pg0003 |
| 01 11 00_Exhibit 03-Photos 62 |
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| 01 11 00_Exhibit 05-Inventory |
| 01 26 01_Contract Modifications |
| 01 27 00_Definition of Contract Limit Items_201116 Rev |
| PART 1 - GENERAL |
| 1.1 SUMMARY |
| A. The intent of this section is to explain, in general, what is and what is not included in a contract line item, and the limits or cut-off points where one item ends and another begins. |
| B. If no contract line item exists for a portion of the work, include the costs in a related item. |
| PART 2 - PRODUCTS (Not Used) |
| PART 3 - EXECUTION |
| 3.1 LIST OF CONTRACT LINE ITEMS |
| A. Contract Line Item No.01 |
| 1. This item consists of Preservation of Crane 62 |
| 2. Measurement for payment will be based upon percentage complete and measured and tracked using the schedule of values. |
| B. Contract Line Item No.02 |
| 1. This item consists of Preservation of Crane 65 |
| 2. Measurement for payment will be based upon percentage complete and measured and tracked using the schedule of values. |
| C. Contract Line Item No 3 |
| 1. This item consists of OPTION A, Fluid Applied Roofing Membrane -CRANE 62 |
| 2. Measurement for payment will be based upon percentage complete and measured and tracked using the schedule of values. |
| 3. Refer to specification section 07 56 00 |
| D. Contract Line Item No 4 |
| 1. This item consists of OPTION B, Maintenance Contract- CRANE 62. |
| 2. As part of this contract, annual maintenance lubrication be performed once, one year after the expiration of the contract's 1-year warranty period of the project per item 3.11 of specification section 05 04 00. |
| 3. Measurement for payment will be based upon percentage complete and measured and tracked using the schedule of values |
| 4. Refer to specification section 05 04 00 |
| E. Contract Line Item No 5 |
| 1. This item consists of OPTION C, Fluid Applied Roofing Membrane -CRANE 65 |
| 2. Measurement for payment will be based upon percentage complete and measured and tracked using the schedule of values. |
| 3. Refer to specification section 07 56 00 |
| F. Contract Line Item No 6 |
| 1. This item consists of OPTION D, Maintenance Contract- CRANE 65 |
| 2. As part of this contract, annual maintenance lubrication be performed once, one year after the expiration of the contract's 1-year warranty period of the project per item 3.11 of specification section 05 04 00. |
| 3. Measurement for payment will be based upon percentage complete and measured and tracked using the schedule of values |
| 4. Refer to specification section 05 04 00 |
| 01 31 00_Project Management and Coordination |
| 01 32 16_Construction Schedule |
| 01 32 33_Photographic Documentation |
| 01 33 23_Submittal Procedures |
| 01 33 23_SubmittalList-ReviewEstimate_WJE |
| 01 35 23_Safety Requirements |
| 01 35 91_Historic Preservation Treatment Proceedures |
| 01 40 00_Quality Requirements |
| 01 42 00_Reference Standards |
| 01 50 00_Temporary Facilities and Controls |
| 01 57 19_12_Noise and Acoustic Managment |
| 01 57 23_Temporary Storm Water Pollution Prevention |
| 01 67 00_Product Requirements |
| 01 73 40_Execution |
| 01 74 19_Construction Waste Management and Disposal |
| 01 77 00_Closeout Procedures |
| 01 77 00_Closeout_and_OM_Req_4-4-07 - BOST - 163343 |
| 01 78 23_Operation and Maintenance Data |
| 01 81 13_Sustainable Design Requirements for Non-LEED Projects |
| 02 41 19 - Selective Demolition_CD_WJE |
| 05 04 00 - Miscellaneous Steel_CD_201116 Rev |
| PART 1 - GENERAL |
| 1.1 SUMMARY |
| A. Section Includes: |
| 1. Fabrication and installation of miscellaneous steel elements for repair of the existing crane structure, boom, house, and cab. |
| 2. Preparation and lubrication of steel wire rope. |
| 3. Installation of new steel wire rope at Crane 65. |
| 4. Installation of block and hook at Crane 65 (parts from attic-stock). |
| B. Related Sections: |
| 1. Section 00 31 26 - Existing Hazardous Material Information |
| 2. Section 08 01 51.91 - Steel Window and Door Restoration |
| 3. Section 09 97 13 - Steel Coating |
| 1.2 REFERENCES |
| A. Definitions: |
| 1. Installer: Used interchangeably for installer or erector. |
| 2. SSPC: Procedures in SSPC Painting Manual. |
| 3. WPS: Welding Procedure Specification. |
| B. Reference Standards: |
| 1. American Institute of Steel Construction (AISC): |
| a. Manual of Steel Construction. 9th Edition, 1989. |
| b. 303 - Code of Standard Practice for Steel Buildings And Bridges |
| 2. American National Standards Institute (ANSI): |
| a. ANSI/AWS D14.1-2005: Specification for Welding of Industrial and Mill Cranes and Other Material Handling Equipment |
| 3. American Society of Civil Engineers (ASCE): |
| a. ASCE/SEI-7-98: Minimum Design Loads for Buildings and Other Structures |
| 4. American Society of Mechanical Engineers (ASME): |
| a. B18.8.1-2014: Clevis Pins and Cotter Pins |
| b. B30.4-2015: Portal and Pedestal Cranes |
| c. B30.5-2004: Mobile and Locomotive Cranes |
| 5. ASTM International (ASTM): |
| a. A29/A29M: Standard Specification for Steel Bars‚ Carbon and Alloy‚ Hot-Wrought. |
| b. ASTM A36/A36M: Standard Specification for Carbon Structural Steel |
| c. A123/A123M: Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products. |
| d. A276/A276M: Standard Specification for Stainless Steel Bars and Shapes. |
| e. A500/A500M: Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes |
| f. A563/A563M: Standard Specification for Carbon and Alloy Steel Nuts |
| g. A603/A603M: Standard Specification for Metallic-Coated Steel Structural Wire Rope |
| h. B117/117M: Standard Practice for Operating Salt Spray (Fog) Apparatus |
| i. D217/D217M: Standard Test Methods for Cone Penetration of Lubricating Grease |
| j. D665/D665M: Standard Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water |
| k. D1743/D1743M: Standard Test Method for Determining Corrosion Preventive Properties of Lubricating Greases |
| l. E165/E165M: Standard Practice for Liquid Penetrant Testing for General Industry |
| m. F593/F593M: Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs. |
| n. F594/F594M: Standard Specification for Stainless Steel Nuts. |
| o. F844/F844M: Standard Specifications, Washers, Plain (Flat) Unhardened for General Use. |
| p. F2329/F2329M: Standard Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners. |
| q. G152/G152M: Standard Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials |
| 6. American Welding Society (AWS): |
| a. D1.1/D1.1M: Structural Welding Code - Steel. |
| b. D1.3/D1.3M: Structural Welding Code - Sheet Steel |
| c. D14.1/D14.1M: Specification for Welding of Industrial and Mill Cranes and Other Material Handling Equipment |
| 7. Federal Test Method Standards: |
| a. TM 4001: Corrosion protection by coatings: salt-spray (fog) test. |
| 8. Wire Rope Technical Board (WRTB): |
| a. Wire Rope Users Manual |
| 1.3 ADMINISTRATIVE REQUIREMENTS |
| A. Preconstruction Meeting: Conduct meeting at Project site. |
| 1.4 SUBMITTALS |
| A. Shop Drawings: |
| 1. Show fabrication and installation elevations, plans, and details of cab wall, roof, and floor repairs, including: |
| a. Dimensions of corroded areas to be replaced, shapes, and material using reference standards such as ASTM properties. |
| b. Details of connections, openings, and other pertinent data. |
| c. Type, size, and length of bolts. |
| d. Indicate extents of coating. |
| 2. Show fabrication and installation details of operator’s control stabilization including: |
| a. Dimensions of existing elements and elements to be replaced, shapes, and material using reference standards such as ASTM properties. |
| b. Details of connections, openings, and other pertinent data. |
| c. Weld sizes, lengths, and types by standard AWS symbols, including shop or field weld designation. |
| 3. Show fabrication and installation details of wire rope, block, and hook for Crane 65: |
| a. Dimensions of existing structure including sheaves, drum, and salvaged block and hook from attic-stock. Include sizes and material using reference standards such as ASTM properties. |
| b. New wire rope including sizes and material using reference standards such as WRTB or ASTM properties. |
| c. Details of hardware and connections. Including, but not limited to beckets, wire rope clips, swages, and cotter pins. |
| B. Product Data and Test Reports: |
| 1. Structural steel elements |
| 2. Wire rope |
| 3. Bolts, nuts, and washers. |
| C. Certificates: |
| 1. Welding consumables - manufacturer’s certificates |
| 2. Welder Performance Qualification Record (WPQR): |
| a. Current WPQR (welder certification), qualified in accordance with Clause 4, Qualification, of AWS D1.1/D1.1M, for welders who will perform shop or site welding. |
| b. WPQR shall be applicable to each WPS that welder will be designated to perform. |
| D. Metallurgist Report: |
| 1. Submit weldability analysis of existing steel to determine preheat and electrode requirements for making attachments to existing steel framing. |
| a. Existing steel is to be treated as Material Class II in the context of AWS D14.1/14.1M unless weldability analysis indicates otherwise. |
| b. Take one sample from each type of existing member to be welded. |
2. Include Welding Procedure Specification (WPS) for welds to existing steel with the submitted weldability analysis.
| E. Material Test Reports: For steel elements; signed by steel manufacturer certifying compliance with appropriate specification; include physical properties and chemical analysis. |
| F. Welding Qualification Data: |
| 1. Welding Procedure Specification (WPS) for each weld type, process, parameters (i.e. wire speed, voltage, amperage, etc.), and position, whether prequalified or qualified by testing by AWS D14.1/14.1M, AWS D1.3/D1.3M, and AWS D1.1/D1.1M, including t... |
| a. Certificate of conformance and product information sheet for consumables listed in the WPS. |
| b. Supplemental welding procedures. |
2. Procedure Qualification Record (PQR) of satisfactory certification testing for each non-prequalified welding procedure.
| G. Fabricator Qualifications: Evidence that fabricator's existing company has minimum five years of continuous experience in similar steel fabrication work; list of at least five representative, successfully-completed projects of similar scope and siz... |
| 1. Project name. |
| 2. Owner's name. |
| 3. Owner's Representative name, address, and telephone number. |
| 4. Description of work. |
| 5. Types of steel fabrication work. |
| 6. Project supervisor. |
| 7. Total cost of steel fabrication work and total cost of project. |
| 8. Completion date. |
| H. Fabricator’s or erector’s, as applicable, written quality control manual that shall include, as a minimum: |
| 1. Material control procedures |
| 2. Inspection procedures |
| 3. Nonconformance procedures |
| I. Fabricator’s or erector’s, as applicable, QC inspector qualifications |
| J. Installer Qualifications: Evidence that installer's existing company has minimum five years of continuous experience in similar steel installation work; list of at least five representative, successfully-completed projects of similar scope and size... |
| 1. Project name. |
| 2. Owner's name. |
| 3. Owner's Representative name, address, and telephone number. |
| 4. Description of work. |
| 5. Types of miscellaneous steel installation work. |
| 6. Project supervisor. |
| 7. Total cost of miscellaneous steel installation work and total cost of project. |
| 8. Completion date. |
| 1.5 QUALITY ASSURANCE |
| A. Fabricator Qualification: Experienced firm that has successfully completed steel fabrication work similar in material, design, and extent to that indicated for Project. Must have successful fabrication with specified materials in local area in use ... |
| 1. Experience in fabricating steel repairs similar to that indicated for this project. |
| B. Installer Qualifications: Experienced firm that has successfully completed miscellaneous steel installation work similar in material, design, and extent to that indicated for Project. Must have successful construction with specified materials in lo... |
| 1. Employ foreman with minimum five years of experience as foreman on similar projects, who is fluent in English, to be on Site at all times during the Work. Do not change foremen during the course of the Project except for reasons beyond control of C... |
| 2. Employ Certified Lubrication Specialist for work related to wire ropes. |
| C. All work is subject to review by the Contracting Officer before it is concealed by other work and/or if means of access is removed. |
| 1. Coordinate mandatory reviews with the Contracting Officer prior to the start of Work. |
| 2. Provide reasonable notification to the Contracting Officer to allow for such review as work proceeds. |
| 1.6 DELIVERY, STORAGE, AND HANDLING |
| A. Deliver store, and handle materials to prevent damage to materials or structure. |
| B. Store elements off ground and spaced with pallets, dunnage, or other supports and spacers. Store to permit easy access for inspection and identification. |
| C. Store fasteners in protected place. Clean and re-lubricate bolts and nuts that become dry or rusty before use per manufacturer's written recommendations. |
| D. Limit stored materials on structures to safe loading capacity of structure at time materials are stored, and to avoid damage or permanent structure deflection. |
| 1.7 PROJECT CONDITIONS |
| A. Verify existing dimensions and details prior to installation of steel elements. Notify the Contracting Officer of conditions found to be different than those indicated in Contract Documents. The Contracting Officer will review situation and inform ... |
| B. Comply with the Government's limitations and restrictions for Site use and accessibility. |
| C. Handle and install materials in strict accordance with safety requirements required by local, state, and federal rules and regulations. |
| 1.8 CHANGES IN WORK |
| A. During rehabilitation work, existing conditions may be encountered which are not known or are at variance with the Contract Documents. Such conditions may interfere with the Work and may consist of damage or deterioration of the substrate or surrou... |
| 1. Notify the Contracting Officer prior to proceeding with the Work of conditions that may interfere with, preclude proper execution of, or jeopardize the performance of the Work. |
| PART 2 - PRODUCTS |
| 2.1 STEEL ELEMENTS |
| A. Channels, Angles, M-Shapes, and S-Shapes: ASTM A36/A36M. |
| B. Plates and Bars: ASTM A36/A36M. |
| C. Hollow Structural Sections (HSS): ASTM A500/A500M, Grade B. |
| D. Wire Rope |
| 1. ASME B30.2, ASTM A603/A603M |
| 2. 1 inch diameter |
| 3. 3/4 inch diameter |
| 4. 6x37 IPS |
| a. Fiber core |
| 2.2 STAINLESS STEEL ELEMENTS |
| A. Channels, Angles, M-Shapes, S-Shapes, and Bars: ASTM A276/A276M, Type 316 (UNS S31600). |
| 2.3 Fittings and Connectors |
| A. Provide fittings and connectors required for attachment and connection of steel wire rope to the existing sheaves and drum for the block and hook attachment: |
| 1. Galvanized drop forged wire rope clips. |
| 2. Cotter pins. |
| a. 316 Stainless steel (UNS S31600) |
| 2.4 Epoxy Filler |
| A. Steel-filled epoxy putty |
| 1. Sodium Chloride resistance (based on 7 day cure at 75 degree Fahrenheit): Very Good |
| 2. Vertical application: 1/4 inch thick trowel applied without sagging |
| 2.5 steel wire rope lubricant |
| A. Penetrating Lubricant |
| 1. Rust Test ASTM D665/665M (A&B) Rust Test: Pass |
| B. Coating Lubricant |
| 1. Rust Test ASTM D1743/1743M Rust Test: Pass |
| 2. Salt fog Corrosion Resistance ASTM B117/B117M: 1,000 hr. / Pass |
| 3. Accelerated Weathering (ASTM G 152, 153): Pass |
| 4. Salt Spray, Fed Standard 791, TM 4001 (10 days): Pass |
| 5. Penetration: 305 mm (ASTM D217) |
| 6. Color: Gray |
| C. Source both lubricants from a single source as manufactured by: |
| 1. Lubrication Engineers, Wichita, KS |
| 2. The Crosby Group, Tulsa, OK |
| 3. The Kirkpatrick Group, Richardson, TX |
| 4. Approved Equal |
| 2.6 Sheave Grease |
| A. Lithium-base grease of a medium consistency. |
| 2.7 AUXILIARY MATERIALS |
| A. Welding Electrodes: |
| 1. Mild Steel: Comply with AWS D1.1 Table 3.1 requirements for Group II or higher steel specifications, and electrodes listed in approved WPSs. |
| B. Stainless Steel Bolts: ASTM F593/F593M, Group 2. |
| 1. Nuts: ASTM F594/F594M, Group 2. |
| 2. Washers: ASTM A240/A240M. |
| C. Threaded Rods: ASTM A36/A36M, galvanized finish. |
| 1. Nuts: ASTM A563/A563M, Type B, hex, galvanized finish. |
| 2. Washers: ASTM F844/F844M, galvanized finish. |
| 2.8 FABRICATION |
| A. Fabricate and assemble in shop to greatest extent possible. Comply with requirements of AISC 303, including tolerances. |
| 1. Cut, drill, and punch elements cleanly and accurately. |
| a. Remove burrs. |
| 2. Cutting: |
| a. Structural Steel: When thermal cutting is necessary, mechanically thermal cut to greatest extent possible. Grind thermally-cut edges to be welded to comply with requirements in AWS D1.1/D1.1M. |
| b. Stainless Steel: Do not contaminate stainless steel with carbon steel dust or debris during fabrication. Use separate grinding and cutting tools for fabrication of stainless steel. Do not flame cut or use other methods involving high temperatures. |
| 3. Cold-Formed Bending: Use smallest radius possible without causing grain separation or otherwise damaging material, with maximum radius of two times the nominal material thickness. |
| a. Inspect bends for cracking by dye-penetrant procedure in accordance with ASTM E165/E165M. |
| b. Stainless steel: Thoroughly clean forming equipment when going from carbon steel to stainless steel fabrication. |
| 4. Holes: Fabricate bolt holes, holes required for securing other work to steel elements, and holes for other work to pass through steel elements. |
| a. Drill holes cleanly and accurately, perpendicular to steel surfaces. Do not thermally cut holes or enlarge holes by burning. |
| b. Drill holes in stainless steel. |
| 5. Grind edges of members to be coated to minimum radius of about 1/32 inch unless otherwise indicated. |
| 6. Exposed Elements: Fabricate with accurate angles, surfaces, and straight edges. |
| a. Fabricate seams and other connections that will be exposed to moisture in manner to exclude moisture. Provide weep holes where moisture may accumulate. |
| b. Remove sharp or rough areas on exposed surfaces. |
7. Mark and match-mark pieces for field assembly.
| B. Welded Connections: Comply with AWS D1.1/D1.1M and D1.3/D1.3M for preheating, required profiles, tolerances, weld appearance, weld quality, and for methods used in correcting welding work. |
| 1. Perform welding in accordance with approved WPSs by properly certified welders. |
| 2. Remove dirt, grease, oil, and foreign matter by pickling, power brushing, degreasing, machining, or grinding, prior to welding. |
| 3. Preheat base metal and maintain interpass temperatures in accordance with AWS D1.1/D1.1M. Do not preheat the austenitic and duplex stainless steels (304(L), 316(L), 2205, 2304) listed in 6.2.A, B. |
| 4. Perform welding in a manner to: |
| a. Minimize distortion of welded pieces. |
| b. Obtain thorough fusion and required profile without cracking. |
5. Remove slag from completed welds, and clean adjacent weld metal by brushing or other suitable means.
| C. Cleaning: After assembly, including welding: |
| 1. Clean and prepare steel surfaces in accordance with Section 09 97 13 |
| PART 3 - EXECUTION |
| 3.1 EXAMINATION |
| A. Examine substrates and conditions with Installer for compliance with requirements and other conditions affecting installation or performance of miscellaneous steel elements. |
| 1. Verify elevations of bearing surfaces and locations of anchor rods, bearing plates, and other embedments. |
| 2. Ensure that Work done by other trades is complete and ready for steel installation. |
| 3. Verify that areas and conditions under which Work is to be performed permit proper and timely completion of Work. |
| 4. Notify the Contracting Officer in writing of conditions which may adversely affect installation or performance of steel elements. Do not proceed with steel installation until adverse conditions have been corrected and reviewed by the Contracting Of... |
| B. Inspect wire rope for distortion, corrosion, and broken strands in accordance with ASME B30.5 |
| C. Inspect cotter pins at block, hook, boom, and all moving parts in accordance with ASME B18.8.1 |
| 3.2 PROTECTION |
| A. Take precautions to ensure safety of people (including building users, passers-by, and workers) and protection of property (including adjacent building elements, structures, landscaping, and motor vehicles). |
| 1. Erect temporary protective canopies and walls, as necessary, at walkways and at points of pedestrian and vehicular access that must remain in service during Work. |
| B. Protect paving and sidewalk, and adjacent building areas from mechanical damage due to scaffolding and other equipment. |
| C. Prevent dust, debris, coating overspray/spatter, and other construction materials from coming into contact with pedestrians, motor vehicles, landscaping, buildings, and other surfaces that could be harmed by such contact. |
| D. Assume responsibility for injury to persons or damage to property due to Work, and remedy at no cost to the Government. |
| E. Limit access to Work areas. |
| F. Protect from damage, all elements of completed work and original construction to remain. |
| 3.3 steel repair |
| A. General: |
| 1. Clean local areas to bare metal as necessary to restore steel sections. |
| 2. Repair steel members: |
| a. To match thickness, overall shape, and profile of original members. |
| B. Weep Holes: |
| 1. If weep exists clean with wire brush. |
| 2. Redrill missing weeps. |
| a. 15/16 inch diameter hole |
| C. Bent Members: Straighten bent or distorted components using heat and applied pressure. Remove and replace components that cannot be satisfactorily straightened. |
| D. Minor Surface Deterioration and Damage: Prepare surfaces, apply primer, and install body filler in accordance with body-filler manufacturer’s instructions. |
| 1. Minor surface deterioration and damage includes corrosion, shallow pitted areas, small holes, depressions, cracks, minor undulations, and isolated, deep pits. Isolated, deep pits are 1/4-inch diameter or less in size with at least 1-inch width of s... |
| 2. Clean area with sandpaper or other means until bare metal is exposed with no coatings or other visible contaminants. If area cannot be adequately cleaned, cut it out and repair as specified. |
| 3. Fill with body filler and allow to cure. Sand smooth and flush with surrounding surfaces. |
| a. If back of repair area is accessible, use temporary backing faced with polyethylene or other material to which body filler will not adhere. Do not remove backing until body filler has cured. |
| b. If body filler begins hardening before application is complete, grind out material that has been placed, clean repair area, and repeat application. |
| E. Sections with Significant Section Loss: Cut out deteriorated section, replace component with new component. |
| 1. Sections with significant section loss include heavily-corroded sections with 1/16 inch or less of remaining thickness. |
| 2. Cut out sections with oxy-acetylene torch. Do not damage adjacent section to remain. |
| a. Remove entire component if significant portion of component is damaged or deteriorated. |
3. Grind edges of remaining section smooth and flat for welding.
| F. House and Cab Roof, Wall, and Floor Section Loss (largest dimension less than 18 inches): |
| 1. Remove areas of section loss at existing steel plate. |
| a. Make cuts square. |
| 2. Prepare and coat existing remaining sections in accordance with Section 09 97 13. |
| 3. Provide steel replacement plate to match existing. |
| 4. Prepare and coat new steel plate in accordance with Section 09 97 13. |
| a. Prepare and coat all sides of new plate. |
| 5. New steel plate to extend 4 inches minimum past the edge of the deteriorated section. |
| a. Size repairs only after preparation of existing steel plate. |
6. Align replacement component with existing panel, and attach with new stainless steel bolts.
| G. House and Cab Roof, Wall, and Floor Section Loss (largest dimension greater than 18 inches): |
| 1. Remove panel. |
| 2. Provide steel replacement plate to match existing. |
| 3. Prepare and coat new steel plate in accordance with Section 09 97 13. |
| a. Prepare and coat all sides of new plate. |
4. Align replacement component with existing adjacent panels, and attach with new stainless steel bolts.
| 3.4 INSTALLATION, GENERAL |
| A. General: |
| 1. Install miscellaneous steel elements in accordance with requirements of AISC 303. |
| 2. Position steel elements accurately in location, alignment, and elevation indicated; with edges and surfaces level, plumb, true, and free of rack. |
| a. Maintain erection tolerances specified by AISC 303. |
| b. Perform cutting, drilling, and fitting required to install steel elements. |
| 3. Provide temporary support for elements during installation to keep elements secure, plumb, and in alignment. Do not remove temporary supports until the installation is complete. |
| 4. Align and adjust various members forming part of the assembly before permanently fastening. |
| a. Before assembly, clean bearing surfaces and other surfaces that will be in permanent contact with adjacent elements. |
| b. Perform necessary adjustments to compensate for discrepancies in elevations and alignment. |
| c. Make allowances for difference between temperature at time of installation and mean temperature when structure is completed and in service. |
5. Do not use thermal cutting during installation.
| B. Welded Connections, Structural Steel: Comply with AWS D1.1/D1.1M for preheating, required profiles, tolerances, weld appearance, weld quality, and for methods used in correcting welding work. |
| 1. Perform welding in accordance with approved WPSs by properly certified welders. Take precautions for fire hazards at adjacent construction. |
| 2. Remove dirt, grease, oil, and foreign matter by pickling, power brushing, degreasing, machining, or grinding, prior to welding. |
| 3. Preheat base metal and maintain interpass temperatures. |
| 4. Perform welding in manner to: |
| a. Minimize distortion of welded pieces. |
| b. Obtain thorough fusion and required profile without cracking. |
| 5. Remove slag from completed welds, and clean adjacent weld metal by brushing or other suitable means. |
| 6. Where existing members are to be welded, shore existing members in accordance with Drawings. Do not heat existing members more than necessary to achieve a satisfactory weld. Place welding work lead as close as possible to weldment being executed. |
| a. Contractor to provide shoring design necessary to complete repair. |
| 3.5 Wire Rope, block, and hook Installation (Crane 65) |
| A. Preparation |
| 1. Verify alignment, support dimensions, and tolerances are correct. |
| 2. Provide for all construction, erection, and wind loads. Provide temporary bracing to maintain structure plumb and in alignment until completion of erection and installation of new wire rope, block, and hook. |
| 3. Prepare and coat block and hook from attic-stock in accordance with Section 09 97 13. |
| a. Grease block and hook assembly prior to coating. |
| b. Replace cotter pins. |
| B. Prepare and clean sheaves and drum prior to the installation of new wire rope in accordance with ASME B30.4 and the Wire Rope Users Manual. |
| 1. Confirm sheaves groove diameter matches wire rope size. |
| 2. Grease and turn sheaves. |
| a. Replace greaser and tap new threads if the threaded connection breaks. |
| b. Turn sheaves |
3. Replace cotter pins
| C. Install wire rope assemblies in accordance with manufacturer's instructions, ASME B30.4, the Wire Rope Users Manual, and the approved shop drawings. |
| 1. Install wire rope assembly to match configuration of Crane 62. |
| a. Attach prepared and coated attic-stock block and hook assembly. Final block position to match Crane 62. |
| b. Wrap both ends of the new wire rope around the drum three times and attach the dead ends of the cables back to the live with three wire rope clips at each termination. |
| c. Attach wire rope to drum in accordance with wire rope manufacturer, ASME B30.4, and the Wire Rope Users Manual. |
| d. Ensure wire ropes are clean, parallel to each other, and without kinks or sags. |
2. Install components plumb, level, square, and rigid without kinks or sags.
| 3.6 lubrication |
| A. Lubricate sheaves prior to start of coating work: |
| 1. Grease sheaves |
| a. Replace greaser and tap new threads if the threaded connection breaks. |
| b. Turn sheaves. |
| c. Remove excess grease and clean exposed steel surfaces. |
| B. Lubricate wire ropes after surface preparation and steel coating work is complete: |
| 1. Prepare wire ropes by thoroughly cleaning all exposed surfaces with wire brush and compressed air to remove foreign materials and existing lubricants. |
| 2. Immediately after cleaning apply penetrating lubricant followed by coating lubricant in accordance with manufacturer’s recommendations. |
| 3.7 Cotter pins |
| A. Replace cotter pins at boom, mast and A-frame in accordance with ASME B18.8.1. |
| 1. Match existing size, length, diameter. |
| 3.8 FIELD QUALITY CONTROL |
| A. Testing Agency: The Contractor will engage a qualified special inspector to verify and inspect aspects of the steel installation and to inspect welds. Welding inspection and welding inspector qualifications shall be in accordance with AWS D1.1/D1.1M. |
| 1. Provide testing agency with access to places where Work is being installed to perform inspections. |
| 2. Provide notice to testing agency of installation schedule. |
| B. Welded Connections: Welds will be visually inspected according to AWS D1.1/D1.1M and the requirements of the applicable building code. Acceptance criteria will be in accordance with AWS D1.1/D1.1M. |
| C. Allow the Contracting Officer access to observe progress and quality of portion of completed Work. |
| D. Promptly correct work rejected by the Contracting Officer or failing to conform to the requirements of the contract documents at no cost to the Government. |
| 3.9 REPAIRS AND PROTECTION |
| A. Stainless Steel Surfaces: Clean and repassivate field-welded surfaces and areas contaminated with carbon steel or iron filings in accordance with ASTM A380/A380M. |
| 3.10 CLEANING |
| A. At the end of each workday, clean the Site and Work areas and place rubbish, empty cans, rags, and other discarded materials in appropriate containers. |
| B. After completing the miscellaneous steel Work: |
| 1. Clean all materials resulting from Work that are not intended to be part of the finished Work using appropriate cleaning agents and procedures. Exercise care to avoid damaging surfaces. |
| 2. Repair at no cost to the Government all items damaged during the Work. |
| 3. Remove and legally dispose of debris and surplus materials from Site. |
| 3.11 Maintenance lubrication (CONTRACT LINE ITEM 4 AND 6) |
| A. Annual maintenance cycle starts one year after completion of the project. |
| B. Lubricate sheaves: |
| 1. Grease sheaves |
| a. Replace greaser and tap new threads if the threaded connection breaks. |
| b. Turn sheaves. |
| c. Remove excess grease and clean exposed steel surfaces. |
| C. Lubricate wire ropes: |
| 1. Prepare wire ropes by thoroughly cleaning all exposed surfaces with wire brush and compressed air to remove foreign materials and existing lubricants. |
| 2. Immediately after cleaning apply penetrating lubricant followed by coating lubricant in accordance with manufacturer’s recommendations. |
| 07 56 00 - Fuild Applied Roofing_CD_201116 Rev |
| PART 1 GENERAL |
| 1.1 SUMMARY |
| A. Section Includes: Surface preparation, supply, and installation of cold fluid-applied reinforced polyurethane roofing membrane at crane roofs. |
| B. Related Sections: |
| 1. Section 00 31 26 - Existing Hazardous Material Information |
| 2. Section 05 04 00 - Miscellaneous Steel |
| 1.2 REFERENCES |
| A. Reference Standards: Latest edition as of Specification date. |
| 1. American National Standards Institute (ANSI): |
| a. ANSI/UL 790: Standard for Standard Test Methods for Fire Tests of Roof Coverings |
| 2. ASTM International (ASTM): |
| a. C836/C836M: Standard Specification for High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane. |
| b. C920/920M: Standard Specification for Elastomeric Joint Sealants |
| c. C1028/C1028M: Static Coefficient of Friction of Ceramic Tile and Other Like Surfaces by the Horizontal Dynanometer Pull-Meter Method |
| d. D638/D638M: Test Methods for Tensile Properties of Plastics |
| e. D4541/D4541M: Method for Pull-Off Strength of Coatings using Portable Adhesion Tester |
| f. D5147/D5147M: Standard Test Methods for Sampling and Testing Modified Bituminous Sheet Material |
| g. D5602/D5602M: Standard Test Method for Static Puncture Resistance of Roofing Membrane Specimens |
| h. E96(A)/E96M(A): Test Methods of Moisture Transmission of Material |
| i. E108/E108M: Fire Tests of Roof Coverings |
| 3. National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual. |
| 4. Steel Structures Painting Council (SSPC) |
| a. SSPC-SP3 Power Tool Cleaning |
| 1.3 Administrative Requirements |
| A. Coordinate Work to ensure that new roofing materials and crane cab interior are kept continuously dry; that continuous, watertight, new roofing system is provided; and that adjacent areas are not adversely affected. Coordinate: |
| 1. With Contracting Officer. |
| 2. With other trades: |
| a. To ensure that work done by other trades is complete and ready for roofing Work. |
| b. To avoid or minimize work on, or in immediate vicinity of, roofing Work in progress and completed new roofing. |
| c. To ensure that subsequent work will not adversely affect completed roofing. |
| B. Pre-installation Meeting: |
| 1. Conduct meeting at Site. |
| 2. Review requirements for roofing system, including: |
| a. Availability of materials, Installer’s personnel, equipment, and facilities needed to make progress and avoid delays. |
| b. Site use, access, staging, and set-up location limitations. |
| c. Surface preparation and roof-deck condition and pretreatment. |
| d. Installation procedures. |
| e. Base flashings, special roofing details, roof drainage, roof penetrations, and condition of other construction that will affect roofing system. |
| f. Testing and inspection requirements. |
| g. Temporary protection and repair of roofing system. |
| h. Structural loading limitations of roof deck. |
| i. Governing regulations and requirements for insurance and certificates. |
3. Contractor’s Site superintendent, roofing-system manufacturer’s technical representative, roofing Installer’s foreman, Contracting Officer, and testing agency representative shall attend.
| 1.4 SUBMITTALS |
| A. Product Data: Roofing-system manufacturer’s literature, including written instructions for evaluating, preparing, and treating substrate; technical data including tested physical and performance properties; and application instructions. |
| 1. Include temperature ranges for storage and application of materials, and special cold-weather application requirements or limitations. |
| 2. Include Safety Data Sheets (SDS) for information only; safety restrictions are sole responsibility of Contractor. |
| B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work; for details and fabrications not shown on Drawings. |
| 1. Include details for substrate joints, inside and outside corners, and other termination conditions. Shop drawings shall be reviewed and approved by the roofing manufacturer. |
| C. Samples: Submit product samples of reinforced membrane and flashing materials showing color, texture, thickness and surfacing representative of the proposed system for review and approval by the Contracting Officer. |
| D. Installer Qualifications: |
| 1. Certification from roofing-system manufacturer, certifying that Installer complies with manufacturer’s requirements to install specified, warranted, roofing system. |
| 2. Evidence that Installer’s existing company has minimum five years of continuous experience in similar roofing work; list of at least five representative, successfully-completed projects of similar scope and size, including: |
| a. Project name. |
| b. Owner’s name. |
| c. Owner’s Representative name, address, and telephone number. |
| d. Description of work. |
| e. Fluid applied materials used. |
| f. Project supervisor. |
| g. Total cost of roofing work and total cost of project. |
| h. Completion date. |
| E. Sample Warranty: Copy of roofing-system manufacturer’s warranty, stating obligations, remedies, limitations, and exclusions. Submitted with bid. |
| F. Following completion of the Work: |
| 1. Roofing-system manufacturer’s inspection report of completed roofing installation. |
| 2. Completed warranty from roofing-system manufacturer. |
| 3. Completed warranty from Installer. |
| 4. Maintenance program recommended for roofing system. |
| 1.5 QUALITY ASSURANCE |
| A. Installer Qualifications: Experienced firm that has successfully completed roofing work similar in material, design, and extent to that indicated for Project; that is approved, authorized, or licensed by roofing-system manufacturer to install roofi... |
| 1. Employ foreman with minimum five years of experience as foreman on similar projects, who is fluent in English, to be on Site at all times during Work. Do not change foremen during the course of the Project except for reasons beyond the control of t... |
| B. Source Limitations: Obtain materials through one source from a single manufacturer. Provide materials not available from the manufacturer from sources which are recommended and approved by the manufacturer. Manufacturer to provide letter on company... |
| C. Preinstallation Conference: Conduct conference at Project site. Review requirements for roofing, including surface preparation specified under other Sections, substrate condition and pretreatment, minimum curing period, forecasted weather condition... |
| D. Mockups: Apply roofing to 4 square feet to demonstrate surface preparation, corner treatment, and execution quality. |
| 1. Document precipitation and dew for 7 days prior to installation of mockup, surface preparation including surface roughness profile, use of moisture barrier and primer, temperature and sun exposure at each step, mixing paddle type, mixer speed and d... |
| 2. Cut out samples of cured waterproofing and document presence of blisters, bubbles, pinholes, and thickness of complete system. |
| 3. After waterproofing has fully cured, cut along sides of loose tails of reinforcing mesh down to substrate, and pull tails until they lift up. Waterproofing installation is considered satisfactory if waterproofing fails in cohesion rather than adhes... |
| 4. If Contracting Officer determines mockups do not comply with requirements, modify mockup or construct new mockup until mockups are approved. |
| 5. Approved mockup will be standard for judging completed Work. |
| 6. Approved mockups may become part of completed Work if undisturbed at time of Substantial Completion. |
| E. Random tests to determine tensile bond strength of membrane to substrate shall be conducted by the Contractor at the job site using an Elcometer Adhesion Tester Model 106 or similar device, or by the performance of a manual pull test in accordance ... |
| 1. Adequate surface preparation will be indicated by tensile bond strength of membrane to substrate greater than or equal to 220 psi (1.5 N/mm2), as determined by use of an adhesion tester. |
| 2. Adequate surface preparation will be indicated by 135 degree peel bond strength of membrane to substrate such that cohesive failure of substrate or membrane occurs before adhesive failure of membrane/substrate interface. |
| 3. In the event the bond strengths are less than the minimum specified, additional substrate preparation is required. Repeat testing to verify suitability of substrate preparation |
| 4. Monitor quantities of installed materials. Monitor application of resin. |
| 1.6 DELIVERY, STORAGE, AND HANDLING |
| A. Deliver, store, and handle materials according to manufacturer’s recommendations and in such a manner as to prevent damage to materials or structure. |
| B. Deliver materials to Site in original containers and packaging with seals unbroken, labeled with manufacturer’s name, product brand name and type, date of manufacture, lot number, and directions for storing and mixing with other components. |
| C. Keep materials dry and do not allow materials to be exposed to moisture during transportation, storage, handling, or installation. Reject and remove from Site new materials which exhibit evidence of moisture during application or which have been ex... |
| D. Store materials in original, undamaged containers in clean, dry, protected location on raised platforms with weather-protective coverings, within temperature range required by manufacturer. Use canvas tarps for protection of moisture-sensitive roof... |
| E. Store rolled materials on ends only, unless otherwise required by manufacturer’s written instructions. Discard rolls that have been flattened, creased, or otherwise damaged. |
| F. Do not store materials at locations where new roofing materials have been installed. |
| G. Limit stored materials on structures to safe loading capacity of structure at time materials are stored, and to avoid permanent deflection of deck. |
| H. Conspicuously mark wet, damaged or open containers and promptly remove from Site. |
| I. Protect stored materials from direct sunlight |
| J. Remove and replace materials that cannot be applied within stated shelf life |
| 1.7 PROJECT CONDITIONS |
| A. The Contractor shall verify existing dimensions and details prior to installation of materials. The Contractor shall notify the Contracting Officer of conditions found to be different than those indicated in Contract Documents. The Contractor shall... |
| B. Comply with Government’s limitations and restrictions for Site use and accessibility. |
| C. Protect existing roofing from damage from construction activities. Repair damage to existing roofing from construction activities. |
| D. Environmental Limitations: Install roofing when existing and forecast weather conditions permit roofing system to be installed according to roofing-system manufacturer’s written instructions and warranty requirements. |
| 1. Apply roofing when substrate temperature is falling, and when substrate and ambient temperatures are within range recommended by roofing-system manufacturer. |
| 2. Do not proceed with installation during inclement weather except for temporary work necessary to protect building interior and installed materials. Remove temporary work and Work that becomes moisture damaged. |
| 3. Do not apply roofing in snow, rain, fog, or mist. |
| 4. Surfaces to receive the roofing shall be free of water, dew, frost, snow, and ice. |
| 5. When ambient temperatures are at or expected to fall below 50 deg. F. (10 deg. C.) or reach 75 deg. F (24 deg. C) or higher, follow Membrane System Manufacturer’s recommendations for weather related additives and application procedures. |
| 6. Do not apply to damp or wet substrate, when relative humidity exceeds 85 percent, or when temperatures are less than 5 degrees F above dew point. |
| E. Handle and install materials in strict accordance with safety requirements required by roofing-system manufacturer; Safety Data Sheets (SDS); and local, state, and federal rules and regulations. Maintain Safety Data Sheets (SDS) with materials in s... |
| F. Maintain adequate ventilation during preparation and application of roofing materials. |
| 1.8 CHANGES IN WORK |
| A. During rehabilitation work, existing conditions may be encountered which are not known or are at variance with the Contract Documents. Such conditions may interfere with the Work and may consist of damage or deterioration of the substrate or surrou... |
| 1. Notify Contracting Officer of conditions that may interfere with the proper execution of the Work or jeopardize the performance of the Work prior to proceeding with the Work. |
| 1.9 WARRANTies |
| A. Manufacturer’s Warranty: |
| 1. Written warranty signed by roofing-system manufacturer, including: |
| a. Repair or replace components of roofing system that do not comply with requirements; that do not remain watertight; that fail in adhesion, cohesion, or general durability; or that deteriorate in a manner not clearly specified by submitted roofing-s... |
| b. Labor and materials to perform warranty Work. |
2. Warranty Period: Twenty (20) years from date of completion of roofing system.
| B. Roofing Installer’s Warranty: |
| 1. Completed warranty form at the end of the Section, signed by Installer, including: |
| a. Repair or replace components of roofing system that do not comply with requirements; that do not remain watertight; that fail in adhesion, cohesion, or general durability; or that deteriorate in a manner not clearly specified by submitted roofing-s... |
| b. Labor and materials to perform warranty Work. |
2. Warranty Period: Two years from date of completion of roofing system.
| PART 2 PRODUCTS |
| 2.1 roofing MEMBRANE |
| A. Two-component, reactive cure, UV and color stable, odor-free, solvent free, Low VOC, Class A fire rated, cold fluid-applied reinforced polyurethane waterproofing membrane from a manufacturer with a minimum of 10 years’ experience manufacturing 2 co... |
| 1. Minimum 165 g/m2 polyester reinforcing fleece. |
| 2. Minimum elongation: 30% (ASTM D5147). |
| 3. Minimum tearing strength: 90 lbf (ASTM D5147). |
| 4. Minimum puncture resistance: 56 lbs. (ASTM D5602). |
| 5. Water vapor transmission: 0.08 perms (ASTM E96) |
| 6. Kemperol 2K-FR manufactured by Kemper System America, Inc. or approved equal. |
B. Membrane color as selected by Contracting Officer with approval by manufacturer in advance of sales order and application.
| 2.2 OTHER ROOFING-SYSTEM MATERIALS |
| A. Membrane Flashings |
| 1. A composite of the same resin material as field membrane with 165 g/m2 fleece reinforcement. |
| 2.3 AUXILIARY MATERIALS |
| A. General: Auxiliary materials recommended by roofing-system manufacturer for intended use and compatible with roofing membrane. |
| B. Membrane Flashings shall be a composite of the same resin material as field membrane with 165 g/m2 fleece reinforcement. |
| C. Polyurethane Primer: Two-component, solvent-free, high solids polyurethane resin for use in improving adhesion of membrane to wood, metal and bituminous substrate surfaces. Monitor application rate and adjust depending on substrate absorbency. |
| D. Epoxy Primer: Primer; quick-curing, penetrating, high bonding, epoxy based primer used between acceptable prepared substrates and cold liquid-applied reinforced membrane |
| E. Hot Weather Additive: Additive specifically designed to slow resin catalyzation process at ambient temperatures above 75ºF (24ºC). Do not use inhibitor at ambient temperatures of 75ºF (24ºC) or less. Inhibitor to be used with white resin prior to m... |
| F. Cold Weather Additive: Additive specifically designed to increase resin catalyzation process at ambient temperatures below 50ºF (10ºC). Cold activator to be used with white resin prior to mixing of multi-component resin. Use as directed by roofing ... |
| G. Caulking: Single component, non-sag elastomeric polyurethane sealant meeting ASTM C920, Type S, Grade NS, Class 35 for use in sealing cracks and joints, and making watertight seals where required. |
This is the start of the file's text. The full file is on GovTribe.
