DIVISION 32 EXTERIOR IMPROVEMENTS

Transcription

1 DIVISION 32 EXTERIOR IMPROVEMENTS

2 THIS PAGE INTENTIONALLY LEFT BLANK

3 SECTION AGGREGATE BASE COURSE PART 1 - GENERAL 1.1 SECTION INCLUDES A. Section includes placing an aggregate base course consisting of a uniform mixture of graded materials on a prepared subgrade. The drawings specify the type of aggregate. B. Drawings and General Provisions of Contract, including General and Special Conditions, apply to this section. 1.2 GENERAL A. Work shall be in conformance with MoDOT through PART 2 - PRODUCTS 2.1 MATERIALS A. Aggregate material shall conform to the following: 1. Type 1 Aggregate (Rolled Stone) MoDOT Type 5 Aggregate MoDOT Aggregate for Surfacing Grade A or B MoDOT Aggregate for unit paver setting bed shall be ASTM C33 sand. 5. Joint filler for unit pavers shall be ASTM C33 sand passing a #8 sieve. 6. Aggregate for permeable unit paver setting bed shall be ASTM #8 Aggregate and meet the following gradation requirements: Percent Passing 1/2" Sieve Passing 3/8" Sieve Passing No. 4 Sieve Passing No. 8 Sieve Passing No. 16 Sieve Joint filler for permeable unit pavers shall be ASTM #89 Aggregate and meet the following gradation requirements: Percent Passing 1/2" Sieve Passing 3/8" Sieve Passing No. 4 Sieve Passing No. 8 Sieve Passing No. 16 Sieve Passing No. 50 Sieve AGGREGATE BASE COURSE

4 8. Non-Penetrated Macadam Base: a. Non-penetrated macadam base shall consist of sound, durable particles of limestone or dolomite, and shall not contain deleterious material such as shale or disintegrated stone in excess of 15 percent. b. The crushed stone shall have a percent of wear not to exceed 50 when tested in accordance with AASHTO 96-58(c) (Los Angeles Abrasion). Stone shall meet the following gradation requirements: Percent Passing 3" Square Sieve Passing 2½" Square Sieve Passing 2" Square Sieve Passing 1½" Square Sieve Passing ¾" Square Sieve B. Water shall be clean and free from acid, salt, oil, and other organic matter. PART 3 - EXECUTION 3.1 GENERAL A. Placement of Aggregate for base shall be in accordance with MoDOT through B. Placement of Aggregate for surfacing shall be in accordance with MoDOT through END OF SECTION AGGREGATE BASE COURSE

5 SECTION PORTLAND CEMENT PAVING PART 1 - GENERAL 1.1 SECTION INCLUDES A. Construction of Portland Cement Concrete Flatwork and Permeable (Pervious) Concrete Flatwork B. Drawings and General Provisions of Contract, including General and Special Conditions, apply to this section. 1.2 RELATED SECTIONS A. Section Concrete Reinforcing 1.3 SUBMITTALS A. Mix Designs B. Certifications 1. Manufacturer s Certification that materials meet specification requirements. 2. Ready Mix delivery tickets: ASTM C QUALITY ASSURANCE A. The Contractor shall retain the services of a third party testing agency to perform testing of cast in place concrete. B. Required Testing: 1. Cast cylinders (1 set of 3 cylinders, 6 dia x 12 L) for compressive strength testing in accordance with AASHTO T Slump tests in accordance with AASHTO T Air entrainment testing in accordance with AASHTO T 152 C. Testing Frequency: One set of each of the tests listed in B. above shall be performed for every 20 cubic yards of concrete delivered. A minimum of 1 test shall be performed each day concrete is delivered, regardless of the quantity. 1.5 PERMEABLE CONCRETE SPECIAL REQUIREMENTS A. Some special equipment (compacting roller; misters, etc.) specific to pervious concrete placement will need to be used by the placing contractor. B. Mix Design: shall furnish a proposed mix design with proportions of materials to Owner or Agent prior to commencement of work. The data shall include unit weights determined in accordance with ASTM C29 paragraph 11, jigging procedure. Compacted void content shall be in the range of 15% to 25%, per ASTM C 1688, Fresh Unit Weight. Cementitous content shall be a minimum of 350 pounds per cubic yard, with total cementitous content to be a maximum of 600 pounds per cubic yard. Water cement ratio shall be a maximum of C. Test Panels: Contractor is to place, joint and cure two test panels, each to be a minimum of 225 sq. ft. at the required project thickness to demonstrate to the Engineer s and Owner s satisfaction that satisfactory pavement compaction and finish can be installed at the site location. 1. Test panels may be placed at any of the specified permeable concrete locations. Test panels shall be evaluated for thickness, compaction and porosity. PORTLAND CEMENT PAVING

6 PART 2 - PRODUCTS 2.1 MATERIALS 2. If the test panels are found to be insufficiently permeable or insufficiently compacted, the test panel shall be removed at the contractor s expense and disposed of in an approved landfill. 3. If test panels are found to be satisfactory, they can be left in-place and included in the completed work. 4. An inspector of choice of the Owner shall determine determination of thickness, porosity and compaction. Should contractor wish to dispute findings of inspector, acceptability shall be determined at Contractor s expense by achieving compacted thickness according to ASTM C42 of no less than ¼ of specified thickness; Void structure of 15% minimum when tested in accordance with ASTM C138; and unit weight within plus or minus 5 pcf of the design unit weight when tested in accordance with ASTM C140 paragraph 6.3. A. Forms and equipment shall conform to MoDOT through B. Curing compound shall conform to MoDOT C. Joint Sealer for pavements shall conform to MoDOT D. Joint Sealer for sidewalks and driveways shall conform to the drawing details E. Pre-formed fiber expansion joint filler shall conform to AASHTO M213 F. Aggregates for permeable concrete: 1. Fine aggregate for permeable concrete shall meet the size and grading requirements as defined in ASTM D448 and shall comply with ASTM C33. A minimum of 9% passing a #4 sieve or smaller may be used. 2. Coarse aggregate shall be crushed stone or crushed gravel and shall meet the size and grading requirements as defined in ASTM D448 and shall comply with ASTM C33. Gradation choice shall be limited to sizes 3/8 or 1/2 maximum nominal size unless a blend or smaller size is otherwise approved by the architect/engineer. Combined grading of the coarse and fine aggregates in the proportions proposed for the mixture must have measureable voids in accordance with AASTM C29 of 38% or greater. G. Portland cement concrete shall conform to MoDOT 501 and 1005 with the following modifications: 1. All portland cement concrete shall be air entrained with 6% (± 1%) minimum air content. 2. Do not use or include calcium chloride. 3. The allowable slump for pavement shall be 2.5 in.; for sidewalk shall be 2-4 in.; and for storm drainage structures shall be 4 in. 4. The minimum 28-day compressive strength requirements shall be 4,000 psi for Class A-1, B, B-1, B-2, and Pavement. Compressive strength shall be 3,000 psi for Seal Class. 5. Aggregate: a. The combined maximum weight of flint and chert shall be 1% of the weight of coarse aggregate. b. The maximum weight of lignite shall be 0.07% of the weight of the fine aggregate. 2.2 USE OF FLY ASH IN CONCRETE MR SP-31 A. The Contractor may use fly ash in the concrete production in accordance with this specification. B. General: Approved Class C fly ash may be used to replace a maximum of 25 percent of Type I or II cement on a pound for pound basis in all concrete, except concrete designed for high early strength. PORTLAND CEMENT PAVING

7 Fly ash shall not exceed 25 percent by weight of the total cementitious material (fly ash and cement). C. Fly ash may replace Type III, IP, or I (PM) cement, provided the various classes of concrete meet or exceed the strength requirements. D. All proportioning, air entraining, slump, maximum mixing water requirements, mixing, sampling, measurement of materials, transporting of concrete, and all materials except fly ash shall be in accordance with MoDOT 501. E. All fly ash shall conform to MoDOT 1018, Fly Ash for Concrete. F. When fly ash is used, an adjustment in design mix proportions will be required to correct the volume yield of mixture. The Contractor shall submit a copy of the mix design and a certification from the supplier the concrete meets the requirements of this specification and MoDOT 501 for all classes of concrete. Obtain the Owner s Representative approval prior to changing a mix design or proportions. G. Base the maximum mixing water as specified in MoDOT 501 on total cementitious material. A sack or bag of cementitious material is ninety-four pounds. The quantity of mixing water in the concrete after proper allowance for aggregate absorption is the net quantity. H. Special Requirements for the use of Fly Ash 1. Fly ash shall be stored in a separate enclosed storage silo during batching operations. 2. Measure the fly ash in the same manner and with the same accuracy as cement. If weighing the fly ash on the same scale beam with the weigh the cement separately first. 3. Consider fly ash in the same manner as cement when measuring mixing time. 4. When using an allowed commercial mixture of concrete that includes fly ash, the contractor shall notify the Owner s Representative of the class, source, and quantity of fly ash proposed in addition to the other requirements of MoDOT 501. The fly ash shall be from an approved source and the quantity shall not exceed 25%, by weight, replacement of cement. PART 3 - EXECUTION 3.1 GENERAL A. Surface finish for pavement patches shall match the adjacent pavement. Sidewalks and driveways shall generally receive a light broom finish. B. Control Joints: 1. Saw joints to the depth shown on the drawings and outlined in these specifications. 2. Saw control joints as soon as possible after the concrete has set, but no greater than 18 hours. Raveled joints are not acceptable. 3. Seal all driveway, parking lot, and sidewalk joints per the drawing details. 4. Seal street and highway pavement joints per MoDOT PAVEMENTS A. Construction of pavements shall conform to MoDOT through and SIDEWALKS A. Construction of sidewalks shall conform to MoDOT through PORTLAND CEMENT PAVING

8 3.4 SURFACE CORRECTIONS A. Bump correction, smoothness correction, or both may be required. B. Accomplish the corrective action to improve the average profile index by longitudinally diamond grinding or use of an approved device designed for that purpose. Do not use a bush hammer or other impact device. C. The final surface of the corrected concrete pavement shall have a texture comparable to adjacent sections that do not require correcting. Satisfactory longitudinal grinding is acceptable as the final surface of the corrected pavements. 3.5 PERMEABLE CONCRETE A. Pavement Thickness: Pavement shall be placed to the depth specified in the plans. B. Formwork: Form materials are permitted to be of wood, steel, or other material sufficient to support the placement equipment and the pervious concrete, and shall be the full depth of the pavement. Forms shall be of sufficient strength and stability to support mechanical equipment without deformation of plan profiles following spreading, strike-off and compaction operations. Forms used with static roller shall have a removable spacer of ½ in. to ¾ in. thickness placed above the finished elevation of pavement. The spacers shall be removed following placement and vibratory strike-off to allow static roller compaction. (Removable spacers may not be necessary if other means of strike-off and consolidation are used). C. Mixing and Hauling: a. Production: Pervious concrete shall be manufactured and delivered in accordance with ASTM C94. b. Mixing: Mixtures shall be produced in central mixers or in transit (truck) mixers. Concrete shall be mixed for a minimum time specified according to Illinois Department of Transportation specification (c). c. Transportation: The pervious concrete mixture may be transported to the site and the discharge of individual loads shall be completed within one (1) hour of the introduction of mix water to the cement. Delivery times may be extended to exceed 90 minutes when dosages of hydration stabilizer are increased to maintain the wet metallic sheen on the concrete. d. Discharge and Adjustments: Each truckload shall be visually inspected for consistency of concrete mixture. Water addition to adjust the consistency shall be permitted at the point of discharge. A minimum of 70 revolutions at the manufacturer s designated mixing speed shall be counted following the addition of any water to the mix, prior to further discharge. Discharge shall be a continuous operation and shall be completed as quickly as possible. Concrete shall be deposited as close to its final position as practical and such that discharged concrete is incorporated into previously placed plastic concrete. If consolidation occurs during concrete discharge, placement shall be halted and wet concrete removed. D. Placing and Finishing: a. The sub-base shall be in a moist condition at time of placement to ensure no reduction in strength of the pavement. b. Concrete may be deposited into the forms by mixer truck chute, conveyor or buggy. c. Unless otherwise permitted, the contractor shall PORTLAND CEMENT PAVING

9 1. Use a roller screed as described under 1.04 Special Equipment. 2. Utilize a mechanical vibratory or roller screed to strike off the concrete ½ in. to ¾ in. above final height, utilizing the form spacers described in Formwork. 3. If approved by the Architect/Engineer in writing, the contractor may place the pervious concrete with a lightweight pan float, or slip form or vibratory form riding equipment with a following compactive unit. Similarly, strike-off by hand straightedge may be permitted for sidewalks and other small areas followed by compaction. (a.) Care must be taken to prevent closing the void structure of pervious concrete. After mechanical or other approved strike-off and compaction operation, no other finishing operation will be allowed prior to curing. Internal vibration shall not be permitted. If surface vibration is applied, it shall be shut off immediately when forward progress is halted. (b.) Placed concrete shall not be disturbed while in the plastic state. (c.) Curing procedures shall begin immediately after finishing is completed. Placing, finishing and tooled jointing and edging must be completed within a 20- minute window from discharge. (d.) The pervious concrete pavement shall be compacted to the required cross-section. (e.) The slab shall be cross-rolled or panned immediately after covering.. E. Jointing: F. Curing: a. Contraction joints in pervious pavements can be omitted at the option of the owner, who may, instead, choose to accept or prefer the appearance of random cracking. b. Joints, if required, shall be constructed utilizing a small joint roller as described in section 1.04 of this guide specification. When this option is used it shall be performed immediately after roller compaction and prior to curing with plastic. c. Isolation joints shall be used when abutting fixed vertical structures. a. The pavement surface shall be covered with a minimum of 6 mil thick polyethylene sheet or other approved covering material. Prior to covering, a non-film forming cure or sealer or evaporation reducer shall be sprayed onto the surface. (See reference 2.04 Curing Materials). The plastic cover section shall be taped or glued, and any holes, tears, or cuts in the plastic shall be taped or repaired to prevent moisture loss and to prevent air infiltration under the plastic. All efforts shall be made to cure and cover the pavement within 20 minutes of placement. b. The curing cover shall remain securely in place for a minimum of 7 days, uninterrupted. No vehicular traffic shall be permitted on the pavement until curing is complete (7 days) and no PORTLAND CEMENT PAVING

10 truck traffic shall be permitted for at least 14 days. Pedestrian traffic may be permitted on the curing concrete after 24 hours. The Architect/Engineer may permit earlier traffic opening times. c. A penetrating densifier may be used after a minimum of seven (7) days. G. Permeable Concrete Quality Control a. The Contractor shall employ a testing laboratory that conforms to the requirements of ASTM E 329 and ASTM C b. Traditional concrete testing procedures for strength and slump control are not applicable to this type of pavement material. c. Unit weight density tests shall be performed for each 150 yd³ or fraction thereof with a minimum of one set of tests for each day s placement. Unit weight shall be measured in accordance with ASTM C The measure is to be filled and compacted in accordance with ASTM C The unit weight of the delivered concrete shall be +/- 8 lb/ft³ of the design fresh unit weight (plastic density). d. Sampling Plastic concrete shall be sampled in accordance with ASTM C 172. e. Void content void content of the plastic concrete shall be calculated as per ASTM C 1688 Density and Void Content of Freshly Mixed Pervious Concrete, and compared to the void percentage required by the hydraulic design. Unless otherwise specified, void content shall be between 15% and 25%. f. After a minimum of seven (7) days, hardened concrete may be tested at a rate of one set of three cores per 150 yd³ of concrete placed. Cores shall be drilled in accordance with ASTM C 42. The cores shall be measured for density, thickness, void structure and unit weight. (Note: Cores are not to be tested for strength, as coring damages the specimens making strength results inconsistent and not representative of the in place material). g. Thickness - Untrimmed hardened core samples shall be used to determine placement thickness. The average of all production cores when measured for length shall not be more than ½ in. less than the specified design thickness. h. Core unit weight (density) and void content The cores shall be tested for unit weight (density) and void content using ASTM C1754, Density and Void Content of Hardened Pervious Concrete. Unit weight (density) of cores shall be +/- 8 lb/ft³ of the sample slab hardened unit weight. Void content shall not be lower than 5% below the specified design void content. Void content shall calculated as follows: % Voids = 1 - (Dd/di) * 100 Where: Dd = oven dried density of core Di = immersed density of core END OF SECTION PORTLAND CEMENT PAVING

11 SECTION CONCRETE PAVEMENT JOINT SEALANT PART 1 - GENERAL 1.1 SECTION INCLUDES A. Section includes sealing control and expansion joints in concrete sidewalks, parking lots, and driveways. B. Drawings and General Provisions of Contract, including General and Special Conditions, apply to this section. 1.2 WORK INCLUDED A. Work under this section includes providing all labor, material, and equipment to seal the contraction, control, and expansion joints in concrete sidewalk, parking lot, and driveway pavements. 1.3 METHOD OF MEASUREMENT AND BASIS OF PAYMENT A. No direct payment will be made for work under this section. The work under this section is incidental to the bid price for the various types of concrete pavement. PART 2 - PRODUCTS 2.1 EXPANSION JOINT MATERIAL A. Expansion joint material shall be 1/2 thick, full depth, pre-molded non-bituminous joint material, with the top 1/2" perforated for removal prior to sealing operations. 2.2 JOINT FILLER A. One or two component polysulfide polymer sealant or a one or two component polyurethane prepolymer sealant B. Color: Gray. Submit sample to Owner s Representative for approval. 2.3 BACKER ROD A. Closed cell polyethafoam sealant backer rod; sized as required PART 3 - EXECUTION 3.1 PREPARATION A. Saw control joints in accordance with the drawings and specifications. B. Seal joints following the sawing operation or as soon as possible thereafter. 3.2 GENERAL A. Manufacturer's recommendations on the joint sealer shall be strictly adhered to with the following additions: 1. Leave joint sealant approximately 1/16" below the pavement surface level to prevent tracking. 2. Sprinkle fine silica sand, as needed, to reduce tracking of the joint sealer. B. Maintain pedestrian traffic on sidewalks unless the Owner s Representative authorizes closure. Prevent ANY tracking of the joint material. 1. The Contractor may close off one-half the sidewalk width to pedestrian traffic while sealant cures. 2. Contractor may place a board, notched on the bottom side, with the notch centered over the joint, and held securely in place with sandbags. CONCRETE PAVEMENT JOINT SEALANT

12 3.3 INSTALLATION A. Remove the perforated portion of the expansion joint material prior to placing joint sealant. B. Clean all loose material from the joints with compressed air. C. In contraction joints, place a polyethafoam sealant backer rod of 5/16" to 3/8" below the surface elevation of the sidewalk. Install the backer rod at uniform depth. D. Install expansion and construction joint sealant to approximately 1/16" below the pavement s surface level. END OF SECTION CONCRETE PAVEMENT JOINT SEALANT

13 SECTION GRANITE PAVERS AND MONUMENT BASE PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Stone pavers set in mortar setting beds. 2. Stone monument. 1.3 SUBMITTALS A. Shop Drawings: Include plans, sections, details, and attachments to other work. B. Product Data: For materials other than water and aggregates. C. Samples: For each type of unit paver indicated and the following: 1. Joint materials involving color selection. 1.4 FIELD CONDITIONS A. Cold-Weather Protection: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen subgrade or setting beds. Remove and replace unit paver work damaged by frost or freezing. B. Weather Limitations for Mortar and Grout: 1. Cold-Weather Requirements: Comply with cold-weather construction requirements contained in TMS 602/ACI 530.1/ASCE Hot-Weather Requirements: Comply with hot-weather construction requirements contained in TMS 602/ACI 530.1/ASCE 6. Provide artificial shade and windbreaks and use cooled materials as required. Do not apply mortar to substrates with temperatures of 100 deg F (38 deg C) and higher. GRANITE PAVERS AND MONUMENT BASE

14 PART 2 - PRODUCTS 2.1 STONE A. Granite Pavers: 1. Manufacturer: Coldspring Granite, Granite West Road, Cold Spring, MN a. Contact: Todd Olson, (D); (C) 2. Paver Type A : a. Color: Mesabi Black b. Finish: Diamond 10 c. Thickness: 1-15/16 d. Face size: Per drawings 3. Paver Type B : a. Color: Mesabi Black b. Finish: Diamond 100 c. Thickness: 1-15/16 d. Face size: Per drawings 4. Paver Type C : a. Color: Agate b. Finish: Thermal c. Thickness: 1-15/16 d. Face size: Per drawings B. Granite Monument Base: 1. Manufacturer: Coldspring Granite, Granite West Road, Cold Spring, MN a. Contact: Todd Olson, (D); (C) 2. Monument Base: a. Color: Mesabi Black b. Finish: Diamond 8 c. Dimensions: Per drawings 2.2 MORTAR SETTING-BED MATERIALS A. Manufacturer: Laticrete International, Inc., 1 Laticrete Park North, Bethany, CT Phone ; B. Mortar: 254 Platinum C. Water: Potable. 2.3 GROUT MATERIALS A. Manufacturer: Laticrete International, Inc., 1 Laticrete Park North, Bethany, CT Phone ; B. Grout: Permacolor Select C. Color: Raven #45 GRANITE PAVERS AND MONUMENT BASE

15 D. Water: Potable. 2.4 MORTAR AND GROUT MIXES A. General: Comply with referenced standards and with manufacturers' written instructions for mix proportions, mixing equipment, mixer speeds, mixing containers, mixing times, and other procedures needed to produce setting-bed and joint materials of uniform quality and with optimal performance characteristics. Discard mortars and grout if they have reached their initial set before being used. PART 3 - EXECUTION 3.1 INSTALLATION, GENERAL A. Joint Pattern: As indicated on drawings. B. Pavers over Waterproofing: Exercise care in placing pavers and setting materials over waterproofing so protection materials are not displaced and waterproofing is not punctured or otherwise damaged. Carefully replace protection materials that become displaced and arrange for repair of damaged waterproofing before covering with paving. C. Tolerances: Do not exceed 1/16-inch (1.6-mm) unit-to-unit offset from flush (lippage) or 1/8 inch in 24 inches (3 mm in 600 mm) and] 1/4 inch in 10 feet (6 mm in 3 m) from level, or indicated slope, for finished surface of paving. 3.2 MORTAR SETTING-BED APPLICATIONS A. Follow manufacturer s instructions. Where they are silent, the following sections apply. B. Saturate concrete subbase with clean water several hours before placing setting bed. Remove surface water about one hour before placing setting bed. C. Apply mortar-bed bond coat over surface of concrete subbase about 15 minutes before placing mortar bed. Do not exceed 1/16-inch (1.6-mm) thickness for bond coat. Limit area of bond coat to avoid its drying out before placing setting bed. D. Apply mortar bed over bond coat; spread and screed mortar bed to uniform thickness at subgrade elevations required for accurate setting of pavers to finished grades indicated. E. Mix and place only that amount of mortar bed that can be covered with pavers before initial set. Before placing pavers, cut back, bevel edge, and remove and discard setting-bed material that has reached initial set. F. Place pavers before initial set of cement occurs. Immediately before placing pavers on mortar bed, apply uniform 1/16-inch- (1.5-mm-) thick bond coat to mortar bed or to back of each paver with a flat trowel. GRANITE PAVERS AND MONUMENT BASE

16 G. Tamp or beat pavers with a wooden block or rubber mallet to obtain full contact with setting bed and to bring finished surfaces within indicated tolerances. Set each paver in a single operation before initial set of mortar; do not return to areas already set or disturb pavers for purposes of realigning finished surfaces or adjusting joints. H. Spaced Joint Widths: Provide 3/8-inch nominal joint width with variations not exceeding plus or minus 1/16 inch. I. Grouted Joints: Grout paver joints complying with ANSI A J. Grout joints as soon as possible after initial set of setting bed. 1. Force grout into joints, taking care not to smear grout on adjoining surfaces. 2. Tool exposed joints slightly concave when thumbprint hard, using a jointer larger than joint thickness unless otherwise indicated. K. Cure grout by maintaining in a damp condition for seven days unless otherwise recommended by grout manufacturer. L. Cleaning: Remove excess grout from exposed paver surfaces; wash and scrub clean. END OF SECTION GRANITE PAVERS AND MONUMENT BASE

17 SECTION BRICK PAVERS PART 1 - GENERAL 1.1 SECTION INCLUDES A. Unit Brick Pavers set in an aggregate setting bed. B. Drawings and General Provisions of Contract, including General and Special Conditions, apply to this section. 1.2 RELATED SECTIONS A. Section Submittals B. Section Aggregate Base Course C. Section Portland Cement Paving D. Section Concrete Reinforcement 1.3 SUBMITTALS A. General: Submit the following in accordance with Section Submittals. 1. Brick pavers Product data 2. Aggregate Bedding Material Certification B. Full size samples of each type of unit paver indicated for verification purposes, including insets for each color, texture, and pattern specified, showing full range of variations expected in these characteristics. 1.4 QUALITY ASSURANCE A. Installer Qualifications: Engage an experienced Installer who has successfully completed unit paver installations similar in material, design, and extent to that indicated for Project. B. Single-Source Responsibility: Obtain each color, type, and variety of unit pavers and setting materials from a single source with resources to provide products and materials of consistent quality in appearance and physical properties without delaying progress of the work. 1.5 DELIVERY, STORAGE, AND HANDLING A. Protect unit pavers and aggregate during storage and construction against wetting by rain, snow, or ground water, and against soiling or contamination from earth and other materials. 1.6 PROJECT CONDITIONS A. Cold-Weather Protection: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen subgrade or setting beds. Remove and replace unit paver work damaged by frost or freezing. PART 2 - PRODUCTS 2.1 UNIT PAVERS A. Unit Pavers: 4 x8 Clay brick paver, with spacing lug and chamfered edges, as manufactured by Endicott Brick Co. B. Unit Paver Supplier: Richards Brick, BRICK PAVERS

18 C. Colors for unit pavers: Red Blend Wirecut Medium Ironspot #77 Manganese Ironspot 33% of each color blended into patterns as shown on plans. 2.2 OWNER-SUPPLIED PAVERS A. Owner will supply a limited number of 4 x8 and 8 x8 engraved commemorative pavers in the Red Blend color. Contractor to install, substituting for non-engraved Red Blend Wirecut, and blend with Medium Ironspot #77 and Manganese Ironspot. See drawings for additional information. 2.3 AGGREGATE SETTING BED MATERIALS A. Setting Bed for Unit Pavers: 1 of ASTM C33 Sand. B. Joint Filler Material for Unit Pavers: ASTM C33 Sand Passing #8 Sieve. C. Joint Filler Material for Paver Installation at Student Union Building South Entry Only: Polymeric Sand: Product Name: HP Polymeric Sand with NextGel Color: Urban Grey Manufacturer: Techniseal 300 Liberte Avenue Quebec, Canada J5R 6X1 Tel# PART 3 - EXECUTION 3.1 EXAMINATION A. Examine surfaces indicated to receive pavers, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of unit pavers. B. Do not proceed with installation until correction of any unsatisfactory condition. 3.2 PREPARATION A. Clean the concrete substrate where applicable to remove dirt, dust, debris, and loose particles. 3.3 GENERAL A. Do not use unit pavers with chips, cracks, voids, discoloration, and other defects that might be visible or cause staining in finished work. B. Cut unit pavers with motor-driven masonry saw equipment. Provide clean, sharp edges without chips. Cut units to provide pattern indicated and to fit adjoining work neatly. Use full units without cutting where possible. Hammer cutting is not acceptable. C. Joint Pattern: Lay unit pavers in the patterns indicated on the drawings. D. Tolerances: Do not exceed 1/16 th -inch unit-to-unit vertical offset from flush and a tolerance of 1/8 th - inch in 2-0 and 1/4 th -inch in 10-0 from level or slope as indicated, for finished surface BRICK PAVERS

19 of paving. 3.4 AGGREGATE SETTING-BED A. Place setting bed by spreading with a striking board to produce a smooth, firm, and even setting surface. Add fresh aggregate material to low spots after each pass of striking board B. Compact setting bed to a nominal depth of 1-inch. Adjust thickness to allow for setting of unit pavers to finished grades. 3.5 UNIT PAVER INSTALLATION A. Place unit pavers carefully by hand in straight courses maintaining accurate alignment and a uniform top surface. B. Protect newly laid unit pavers with panels of plywood on which workers stand. Advance the protective panels as the work progresses. Maintain protection in areas subject to continued movement of materials and equipment. Avoid creating depressions or disrupting alignment of unit pavers. C. If additional leveling of paving is required, before treating joints, roll with a power roller after sufficient heat has built up in the surface from several days of hot weather. Check and maintain alignment. D. Joint Treatment: 1. Place unit pavers with hand-tight joints to spacing lugs. 2. Where pavers need to be cut, all joints to be 1/8 wide between full and cut pavers, or cut pavers and adjacent concrete. Do not lay hand tight where spacing lugs have been removed. 3. Fill joints with materials indicated in Section 2. Sweep joint filler materials over paved surface until joints are filled. 3.6 REPAIR, POINTING AND PROTECTION A. Remove and replace unit pavers that are loose, chipped, broken, stained, damaged, or if units do not match adjoining units. B. Provide new units to match adjoining units and install in same manner as original units. Provide the same joint treatment to eliminate evidence of replacement. C. Provide final protection and maintain conditions in a manner acceptable to Installer, which ensures unit paver work being without damage or deterioration at time of Substantial Completion. END OF SECTION BRICK PAVERS

20 THIS PAGE INTENTIONALLY LEFT BLANK

21 SECTION SEGMENTAL RETAINING WALLS PART 1 - GENERAL 1.1 SUMMARY A. This Section includes single-depth segmental retaining walls without soil reinforcement. B. Related Sections: 1. Division 31 Section "Earth Moving" for excavation for segmental retaining walls. 1.2 PERFORMANCE REQUIREMENTS A. Basis of Design: Design of segmental retaining walls is based on products indicated. If comparable products of other manufacturers are proposed, provide engineering design for proposed products, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated. B. Delegated Design: Design segmental retaining walls, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated. C. Structural Performance: Engineering design shall be based on loads due to soil pressures resulting from grades indicated and be according to NCMA's "Design Manual for Segmental Retaining Walls." D. Seismic Performance: Engineering design shall be based on loads and factors due to soil pressures resulting from grades indicated and be according to NCMA's "Segmental Retaining Walls - Seismic Design Manual." 1.3 SUBMITTALS A. Product Data: For each type of product indicated. B. Samples: For each color and texture of concrete unit required. PART 2 - PRODUCTS 2.1 SEGMENTAL RETAINING WALL UNITS A. Concrete Units: ASTM C 1372, Normal Weight, except that units shall not differ in height more than plus or minus 1/16 inch from specified dimension. 1. Manufacturers: Provide products by Versa-Lok. SEGMENTAL RETAINING WALLS

22 a. Model: Square Foot segmental retaining wall (SRW) unit, with cap b. Shape: Rectangular (8 x18 x12 ) c. Finish: Regular split face. d. Color: Limestone e. Supplier: Midwest Block and Brick, 2203 E. McCarty St., Jefferson City, MO Provide units that comply with requirements for freeze-thaw durability. 3. Provide units that interlock with courses above and below. 2.2 INSTALLATION MATERIALS A. Pins and Clips: Versa-Tuff connection pins, two (2) per SRW unit. B. Cap Adhesive: Versa-Lok concrete adhesive. C. Leveling Base: Comply with requirements in Division 31 Section "Earth Moving" for base material and Division 33 Section "Subdrainage" for drainage fill. D. Drainage Fill: Comply with requirements in Division 33 Section "Subdrainage." E. Soil Fill: Comply with requirements in Division 31 Section "Earth Moving" for satisfactory soils. F. Drainage Geotextile: Nonwoven needle-punched geotextile, manufactured for subsurface drainage applications, made from polyolefins or polyesters; with elongation greater than 50 percent. 1. Apparent Opening Size: No. 70 to 100 sieve, maximum; ASTM D Minimum Grab Tensile Strength: 110 lb; ASTM D G. Subdrainage Pipe and Filter Fabric: HDPE perforated drain pipe with filter fabric sock. 1. Comply with requirements in Division 33 Section "Subdrainage." H. Soil Reinforcement: Product specifically manufactured for use as soil reinforcement. PART 3 - EXECUTION 3.1 RETAINING WALL INSTALLATION A. General: Place units according to NCMA's "Segmental Retaining Wall Installation Guide" and segmental retaining wall unit manufacturer's written instructions. 1. Lay units in bond pattern recommended by manufacturer. 2. Form corners and ends by using units recommended by manufacturer. B. Leveling Base: Place and compact base material to thickness indicated and with not less than 95 percent maximum dry unit weight according to ASTM D 698. SEGMENTAL RETAINING WALLS

23 C. First Course: Place first course of segmental retaining wall units for full length of wall. Place units in firm contact with each other, properly aligned and level. 1. Tamp units into leveling base as necessary to bring tops of units into a level plane. D. Subsequent Courses: Remove excess fill and debris from tops of units in course below. Place units in firm contact, properly aligned in a traditional running bond pattern, and directly on course below. E. Cap Units: Place cap units with a slight overhang to the front wall face and secure with cap adhesive. 3.2 FILL PLACEMENT A. General: Comply with requirements in Division 31 Section "Earth Moving," NCMA's "Segmental Retaining Wall Installation Guide," and segmental retaining wall unit manufacturer's written instructions. B. Fill voids between and within units with drainage fill. Place fill as each course of units is laid. C. Place, spread, and compact drainage fill and soil fill in uniform lifts for full width and length of embankment as wall is laid. Place and compact fills without disturbing alignment of units. Where both sides of wall are indicated to be filled, place fills on both sides at same time. Begin at wall and place and spread fills toward embankment. 1. Use only hand-operated compaction equipment within 48 inches of wall, or one-half of height above bottom of wall, whichever is greater. 2. Compact reinforced-soil fill to not less than 95 percent maximum dry unit weight according to ASTM D 698. a. In areas where only hand-operated compaction equipment is allowed, compact fills to not less than 90 percent maximum dry unit weight according to ASTM D Compact nonreinforced-soil fill to comply with Division 31 Section "Earth Moving." D. Place drainage geotextile against back of wall and place layer of drainage fill at least 12 inches wide behind drainage geotextile to within 12 inches of finished grade. Place another layer of drainage geotextile between drainage fill and soil fill. E. Wrap subdrainage pipe with filter fabric and place in drainage fill as indicated, sloped not less than 0.5 percent to drain. F. Place impervious fill over top edge of drainage fill layer. G. Place soil reinforcement in horizontal joints of retaining wall where indicated and according to soil-reinforcement manufacturer's written instructions. Embed reinforcement a minimum of 8 inches into retaining wall and stretch tight over compacted backfill. Anchor soil reinforcement before placing fill. 1. Place additional soil reinforcement at corners and curved walls to provide continuous reinforcement. SEGMENTAL RETAINING WALLS

24 2. Place geosynthetics with seams, if any, oriented perpendicular to segmental retaining walls. 3. Do not dump fill material directly from trucks onto geosynthetics. 4. Place at least 6 inches of fill over reinforcement before compacting with tracked vehicles or 4 inches before compacting with rubber-tired vehicles. 5. Do not turn vehicles on fill until first layer of fill is compacted and second layer is placed over each soil-reinforcement layer. 3.3 FIELD QUALITY CONTROL A. Testing Agency: Contractor to engage a qualified testing agency to perform tests and inspections as needed. B. Comply with requirements in Division 31 Section "Earth Moving" for field quality control. 1. In each compacted backfill layer, perform at least 1 field in-place compaction test for each 150 feet or less of segmental retaining wall length. END OF SECTION SEGMENTAL RETAINING WALLS

25 SECTION TURF AND GRASSES PART 1 - GENERAL 1.1 SUMMARY A. This Section includes the following: 1. Sodding 2. Seeding 3. Erosion Control Blanket in turf seed areas. 4. Temporary Fencing at all turf areas. B. Related Sections include the following: 1. Division 31 Section "Site Clearing" for topsoil stripping and stockpiling. 2. Division 31 Section "Earth Moving" for excavation, filling and backfilling, and rough grading. 3. Division 32 Section Exterior Plants for topsoil 1.2 DEFINITIONS A. Finish Grade: Elevation of finished surface of planting soil. B. Planting Soil: Native or imported topsoil, manufactured topsoil, or surface soil modified to become topsoil; mixed with soil amendments. C. Subgrade: Surface or elevation of subsoil remaining after completing excavation, or top surface of a fill or backfill immediately beneath planting soil. D. Subsoil: All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic matter and soil organisms. 1.3 SUBMITTALS A. Product Data: For each type of product indicated. B. Sod: Submit sod grower s certification of grass species. Identify source location in Bid Proposal Form. C. Certification of Grass Seed: From seed vendor for each grass-seed mono-stand or mixture stating the botanical and common name and percentage by weight of each species and variety, TURF AND GRASSES

26 and percentage of purity, germination, and weed seed. Include the year of production and date of packaging. D. Product Certificates: For soil amendments and fertilizers, signed by product manufacturer. E. Temporary fencing and staking. F. Material Test Reports: For existing surface soil and imported topsoil. G. Planting Schedule: Indicating anticipated planting dates for each type of planting. 1.4 QUALITY ASSURANCE A. Sod: Comply with American Sod Producers Association (ASPA) classes of sod materials B. Installer Qualifications: A qualified landscape installer whose work has resulted in successful lawn establishment. 1. Installer's Field Supervision: Require Installer to maintain an experienced full-time supervisor on Project site when planting is in progress. C. Soil-Testing Laboratory Qualifications: An independent laboratory, recognized by the State Department of Agriculture, with the experience and capability to conduct the testing indicated and that specializes in types of tests to be performed. 1. Topsoil Analysis: As indicated in Division 32 Exterior Plants 1.5 DELIVERY, STORAGE, AND HANDLING A. All sod shall be reviewed by a University representative prior to installation. University representative reserves the right to refuse any sod deemed unacceptable. B. Sod: Deliver and install sod cut within a 48-hour period. 1. Do not transport sod when moisture content may adversely affect sod survival. 2. Transport sod in either a closed van or in properly covered open trucks. 3. Cover sod on pallets to prevent dehydration or contamination. Any sod that has dried out will be rejected and shall immediately be removed from the job site by the contractor. 4. Sod shall be sprinkled with water and covered with moist burlap, straw or other approved covering and protected from exposure to wind and direct sunlight. Covering shall be such that air can circulate and heating will not develop. 5. Do not tear, stretch, or drop sod during handling and installation. 6. Sod shall not be dumped or dropped from vehicles. C. Seed: Deliver seed in original sealed, labeled, and undamaged containers. TURF AND GRASSES

27 1.6 SCHEDULING A. Notify the Owner at least three (3) working days prior to start of seeding or sodding operations. B. Planting Restrictions: Plant seed during one of the following periods or with approval from the Owner s Representative. Coordinate planting periods with maintenance periods to provide required maintenance from date of Substantial Completion to Final Acceptance. 1. Spring Planting: April 15 -June15 2. Fall Planting: September 1 - October 15 C. Weather Limitations: Proceed with planting only when existing and forecasted weather conditions permit. 1.7 LAWN MAINTENANCE A. Begin maintenance immediately after each area is planted and continue until acceptable lawn is established, but for not less than the following periods: 1. Seeded Lawns: 60 days from date of Substantial Completion. When full maintenance period has not elapsed before end of planting season, or if lawn is not fully established, continue maintenance during next planting season. 2. Sodded Lawns: 30 days from date of Substantial Completion. B. Maintain and establish lawn by watering, fertilizing, weeding, mowing, trimming, replanting, and other operations. Roll, re-grade, and replant bare or eroded areas and re-mulch to produce a uniformly smooth lawn. 1. In areas where mulch has been disturbed by wind or maintenance operations, add new mulch. Anchor as required to prevent displacement. C. Temporary Fencing: Provide and maintain stable and secure temporary fencing at all new turf areas until seed or sod has become established. Monitor, maintain and restore any fencing that has been damaged. D. Watering: Provide and maintain temporary piping, hoses, and lawn-watering equipment to convey water from sources and to keep lawn uniformly moist to a depth of 4 inches. 1. Schedule watering to prevent wilting, puddling, erosion, and displacement of seed or mulch. Lay out temporary watering system to avoid walking over muddy or newly planted areas. 2. Water lawn at a minimum rate of 1 inch per week. E. Mow lawn as soon as top growth is tall enough to cut. Repeat mowing to maintain specified height without cutting more than 40 percent of grass height. Remove no more than 40 percent of grass-leaf growth in initial or subsequent mowings. Do not delay mowing until grass blades bend over and become matted. Do not mow when grass is wet. Schedule initial and subsequent mowings to maintain the following grass height: TURF AND GRASSES

28 1. Mow grass 2 to 2-1/2 inches high. F. Lawn Post fertilization: Apply fertilizer after initial mowing and when grass is dry. 1. Use fertilizer that will provide actual nitrogen of at least 5 lb/1000 sq. ft. to lawn area. PART 2 - PRODUCTS 2.1 SOD A. Provide Five Star Fescue / Thermal Blu Blend sod, field-grown in the same climatic conditions as the project site. Sod that has been grown on soil high in organic matter, such as peat, is not acceptable. Sod must be capable of growth and development when planted. B. Provide well-rooted, two-years old minimum, healthy sod, free of disease, nematodes and soil borne insects. Provide sod uniform in color, leaf texture, density, and free of weeds, undesirable grasses, stones, roots, thatch, and extraneous materials; viable and capable of growth and development when planted. C. Sod strips to be not more that fifteen (15) inches wide, by four (4) long, and not less than 1.5 inches in soil thickness. D. Sod is to contain no netting or other manufactured binders. E. Owner s Representative reserves the right to reject unacceptable sod at the nursery or the job site. 2.2 SEED A. Grass Seed: Fresh, clean, dry, new-crop seed complying with AOSA's "Journal of Seed Technology; Rules for Testing Seeds" for purity and germination tolerances. B. Seed Species: State-certified seed of grass species as follows, with not less than 95 percent germination, not less than 98 percent pure seed, and not more than 1 percent weed seed, free of Poa annua, Bent Grass and noxious weed seeds: 1. Provide seed as listed below or approved equal: Five Star Fescue Blend 90% Thermal Blu Blend 10% Available from Scotts Turf Seed. Confirm blends and percentages with the Owner. 2.3 TOPSOIL A. Topsoil: As defined in Division 32 Exterior Plants TURF AND GRASSES

29 2.4 INORGANIC SOIL AMENDMENTS A. As defined in Division 32 Exterior Plants B. And for sodded areas: Ground ferrous sulfate containing not less than 20% iron and not less than 30% sulphur as manufactured by Duvall or an approved equal. 2.5 ORGANIC SOIL AMENDMENTS A. As defined in Division 32 Exterior Plants : 2.6 PESTICIDES A. In order to safeguard both life and property, the Contractor will adhere to the following: B. Appropriate protective clothing and gear consistent with the type of pesticide being used shall be provided and worn during application. All containers holding pesticides shall be properly labeled with the name and strength of the chemical agent therein. Pesticides, herbicides and other toxic materials will not be stored on university property. C. A large number of pesticides or groups of pesticides are designated as restricted materials; their use and possession are subject to special restrictions under regulations of the State Department of Agriculture. Included in this list are insecticides, fumigants, mercury-treated seeds, rodenticides and avicides. In addition, certain herbicides are also classified as restricted materials. Before using any material listed in this group, contact the Agricultural Commissioner to determine the status of the chemical and for information regarding regulations concerning pesticide storage, transportation and dispersal. NO RESTRICTED USE PESTICIDES ARE TO BE USED ON CAMPUS. 2.7 FERTILIZER A. Superphosphate: Commercial, phosphate mixture, soluble; a minimum of 20 percent available phosphoric acid. Ammonium phosphate , or approved equal. B. Starter Fertilizer: Coarse grade endoroots granular, fertilizer as manufactured by Roots Inc or approved equal. C. Growth Fertilizer: Commercial-grade complete fertilizer of neutral character, consisting of fastand slow-release nitrogen, 50 percent derived from natural organic sources of urea formaldehyde, phosphorous, and potassium in the following composition: 1. Composition: Country Club granular fertilizer as manufactured by Lebanon Turf Products or approved equal. D. Maintenance Fertilizer: Granular or pelleted Commercial-grade complete fertilizer of neutral character, consisting of fast- and slow-release nitrogen consisting of 50 percent water-insoluble nitrogen, phosphorus, and potassium in the following composition: TURF AND GRASSES