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HomeMy WebLinkAbout4155-88 z 0 Cl) CO Cl) to , -0 Work includes, but is not limited to the following: Furnf-sh a ' 11 labor �aand materialsi, appliances, toolS, equipment, facilities, transportation, and services nocessary for installib'gi fa,'V&6ncretoi work co rplete as ind-icated on the drawings and specifications includirig, but not limited to-, A� Furnish and set all reinforcing steel, bolts and arichor& B. Install all items required by other trades which are t6 be cast into concrete. C. Concrete mow curbs, banding, poured in place walls other flatwork, footings, pans and stabs for: tivalls, fencing benches� controlfers, d6ck&, etc;, where applIcabra. PA. _2jGENhERAL 2.2 PROTECC"TION OF EXISTING CONDITIONS Contractor shall acquaint himself with all site conditions. He shall take necessary precautions to protect existing site conditions. Should damage be incurred, this Contractor shall repair damage to its original condition or furnish and install equal replacement at his own expense, 'to the satisfaction of the Owner. 2.4 COORDINATION wlp� �_ � Wherever the terms "approve," "approval, " or "approved" are used in the Specifications, they mean approval of the Landscape Architect, the Owner's Representative or their field representatives, or in writing. 2.6 SUBMITTALS At Ileast 10 days after award of contract, Contractor shall submit for approval samples and/or manufacturers' latest catalog -cuts and speeffications, of the following prior to beginning work, Approved samples shall be standardsfor completing work - A. One 2 -ft. x 2 -ft. x 2 -in. sample for each type of concrete finish and color at the job site. B� Color samples for expansion joint compounds. C. All submittall data shall be forwarded in a single package to 'the Landscape Architect within 15 days after award of the GeneralContract unless otherwise approved by the Landscape Architect andt'or Owner's Construction Representative. 2.7 SUBSTITUTIONS X Standards*, SDecific reference to manufacturers' names and products specified in this section are used as standards; this implies no right to substitute other material or methods without written approval of the Landscape Architect. B� Approval; Installation of' any approved substitutions is Contractors's responsibility. Any changes required for installation oflany approved substitution must be made to the satielaction of Landscape Architect and without additional cost to Owner, Approval by Landscape Architect of substituted materials and/or dimensional drawings do not waive these requirements. F_AB1_3_-__MA1_EBJA1LS Materials shall be of first quality and of domestic manufacture as noted below: A. Portland cement shall conform to A.,--TM-C1 SO, TVpe 1, or Type Ill. B. Concrete aggregate shall conform to ASTM -C33. C� Water shall be clean, free from strong acid, alkali, oil or organic matter. D. Admixture for all formed concrete shall be SIKA Chemical Corp.'s "Plastiment", o,, approved equal, applied in strict accordance with manufacturer's directtions, E. Reinforcement-. reinforcina steel AS1-M-A'l 5 and AST %111-A305.Wiref abric: ASTM -A'185 F. Forms: 1. Lumber shall be '"constraction grade" Douglas fir. 2, Plywood for forming of concrete, which is exposed shall be Plyform. All plywood used for forming shall be at least 5/8 -inch thick and edge seated. G. Expansion Joint 'filler shall conform with ASTIVI-D1751 (premolded). PA R T 4 -f XEJ 2UMAI 2. Ali 'liquid curing compounds shall be used in accordance with the manufacturer's 4.02 INSPECTION OF WORK AREAS recommendations and shall not be used on surfaces receiving concrete hardener. A. Inspect related Work and adjacent surfaces for completeness. 4.10 DEFECTIVE CONCRETE B. Correct conditions detrimental to a proper and timely completion of the Work, A. Concrete which is not in accordance with these specifi ications, out of line, level, or plumbi 4.03 OBSERVATION OF MASONRY WORK showing structural cracks, rock pockets, voids., spallsl hondycombing, exposed "AISC/ Steel Construction Manucal'. reinforcing or -other damaged surfaces shall be considered a6 defective. Perform all masonry Work under continuous observation by the Landscape Architect andtor Owner's representative. B. All -lines and irregularities shall be removed f-rorn exposed concrete surfaces while the Weml Finished Manual", of the National Association of Architectural Metal concrete is still green. Where patching is requited, all loose and uniform concrete shall be. 4.04 PREPARATION removed prior to patching. A. Previously placed coincreW or masonry: Clean of encrustations, lalittance� oil and coatings 4.11 CONCRETE FINISHES which would reduce bond Wash Work thor 6ugpily with water under pressuro; leave surfaces damp where masonry units connect with earlier placed Work. Flat surfaces shall be screeded to the required levels and slopes and then any excess water or laitance removed. Concretd shall be compacted with a grid tArnper and thbn f1diated to' a true an'd level surface withitv Ro Masonry units-, Thoroughly clean of dust, grease, oil, or other matter which would reduce thd tolerance of 1 /8 -inch alona a I 0 -inch straight eC46. Contractor shall ensure positive drainage or! all bond. flafwork. See Plans for conc�ete finish in landscape areas. C. Wetting: Do not wet concrete block units before installation. 4.12 EXPANSION JOINTS D. Reinforcement: Clean off excess mill scale, loose rust, oil and coatings which would ,Placement of expansion joints shall be as directed and determined by layouts of stab markings noted on reduce bond, Secure anchor in place. drawings. Expansion joint material shall be Poly Foam, or approved equal, or as noted on Plans. Expansion joints shall be recessed one-quarter inch from finish surface and sealed with a bead of grey thiokol sealant 4.05 PLACING REINFORCEMENT or equal. Silica sand to match concrete color shall then be tamped into thiokol bead. A. Place reinforcement in accord with ACI 531 4.13 CONTROL JOINTS B. Place all reinforcement and embeds prior to grouting. Control joints and other edges shall be formed in fresh concrete using a clean edging or iointing tool to provide a smooth uniform finish. C. Reinforcing steel, except dowels in other Material. 4.14 PROTECTION 1. Vertical bars: CDontinuous from bottom cell to top of wall, centered in cells, except where otherwise indicated, Secure vertical reinforcement in position at All finished concrete work shall, be banicaded to pedestrian traffic for three (3) days. Barricades shall be top, bottom and at intervals not farther apart than 192 bar diameters. Where necessary, hold vertical steel firmly in place by frames or other suitable devices placed immediately after concrete'llinishing. Contractor shall furnish, place and remove all of his own as accelatted by Architect. barricades. Contractor shall be responsible for any damage to new construction and replacement of repair of the work shall be made without added cost, to Owner. 2. Horizontal bars: Wire temporarily above exact position and tag to indicate 4.15 PATCHING correct locations, Use calibrated vertical bars where indicated, wired to vertical bars or dowels. if patching is necessary and permissible, a bonding agent such as Weld -Crate, or equal, shall be used. 3. Accurately splice using lap of bars as indicated on drawings with a minimum of, 410 4.16 CONCRETE CURBS bar diameters. Construct concrete curbs at locations shown on Plans as detailed, true to line and grade, as approved by 4. Tie at intersections using No. 16 gauge annealed wire. the local County or City. Use natural grey Portland cement concrete, 2000 PSI compressive strength. 1 4.066 MORTAR AND GROUT Locate expansion joints as detailed or shown, and as directed, at intervals not to exceedfift9en feet ('15"1 Finish with steel trowel. then brush with bristle brush r)arallel to face or edoe. 4.17 CLEAN-UP Upon completion of all concrete work and before final acceptance, Contractor shall remove all tools, surplus materials, apparatus, debris, etc., fi om, the site and the site shall be left in a clean, neat condition acceptable to Owner. PART 5 - WARRANIES In addition to manufacturers' guarantees or warranties, all work shall be warranted for one year from the date of final acceptance against all defects in materials and workmanship by contractor, Warranty shall also cover repair of damage to any part of the premises resulting from defects in materials and workmanship to the satisfaction of the Owner. END OF SECTION CONCRETE UNIT MASONRY AND STUCCO SURFACING 2.01 PERMITS & INSPECTIONS A. Standard Specifications: Standard Specifications of the State of California, Business and Transportation Agency, Department of Transportation, CALTRANS. B. Standards-, 4.01 CONCRETE DESIGN MIX X (_-)Iontractor assumes responsibility for the design mix and guarantees the specified ultimate strength as indicated or specified herein. B. Concrete, minimum 28-dav ultimate strength shall be 2000 PSI. C� Ready -mixed concrete shall conform to ASTM -C94. 4.02 CONCRETE PROPORTIONS & CONSISTENCY A. The proportions of aggregate to cement shall provide a dense mixture which will readily work into all corners of the forms and around all reinforcements without any segregation of the materials, cause excess free water to collect, on the surface or cause exces'sive bleeding of the forms. B. The recommended practices of the American Concrete institute shall be followed inall applicable procedures, The maximum slump shall not exceed (.4"*1, four inches for footings, slabs on grade, and mass concrete, 5 inches for foundation walls. 4.03 CONCRETE APPROVAL Thl-e concrete quality, proportions, consistency, etk-,,, is subject to the approval of Owner, and no changes shall be made without prior written approval. 4.04 FORMWORK A. Forms for concrete work shall be either metal or wood, Forms that are warped or that do not have a smooth straight upper edge shall not be used. Forms shall be set with the upper eedge -of the board true to line and grade and shall be staked rigidly in place with stakes set not more than four feet ( 4') apart so as to remain immovable throughout the construction, All forms shall be approved by Owner within a tolerance of one percent (10/6)� All materials shall, be accurately and separately weighted and mixing shall continue until the distribution of material is uniform and the mass of concrete is homogeneous. B. Two and one-half, (2 1/2) gallons of water per cubic yard, shall be withheld from the mix at the plant, and all or a portion may be added to the mix at the job site as directed by the Inspector. 11 he concrete shall be mixed at least 5 minutes after such water is added and not less than 3. minutes of this time shall be immediately prior to the discharge ofl the batch, Total mixing time after adding original water shall be at least 155 minutes. C. Concrete which is not placed within 90 minutes after the introoduction of cement and water, and concrete which has stoodfor 30 minutes after leaving the mixer, shall not be used. 4.05 REBAR Reinforcing bar shall be spliced with 40 bar diamers minimum overlap. 4.06 CONVEYING AND PLACING A. Before pouring, all forms shall be thoroughly cleaned and made tight. The bottom of I � A,5 I Ivi - American 60CIely OT I esL!ng andIvIaterials. 2. ACI - American Concrete I nst-itute, Manual of Concrete Practice. 2.03 INSPECTION OF SITE Examine related work and surfaces before starting work in this Section. Report to the Landscape Architect in writing site conditions which will prevent the proper provision of this viork, Beginning the work in this Section without reporting unsuitable conditions to the Landscape Architect constitutes acceptance of site conditions by the Contractor. Any required removal, repair, or replacement of this work caused by unsuitable conditions shall be done at no additional cost to Owner. 2.04 PROTECTION OF LEXISTING CONDITIONS Contractor shall acquaint himself with all site conditions. He shall take necessary precautions to protect existing site conditions. Should damage be incurred, this Contractor shall repair damage to its original condition or furnish and install equal replacement at hi's own expense, to the satisfaction of the Owner, 2.05 COORDINATION A. Cooperation onsite-, Coordinate and cooperate with other contractors to enable the work to proceed as rapidly and as efficiently as possible. B. Work with Other Trades; Coordinate with General Contractor items of other trades to be furnished and set In place. Such portions of their work as all or in part embedded, built-in, attached to, or supported by the work shall be executed by thern in ample time that progress of the work is not delayed, Any cutting or patching made necessary to comply with this injunction shall be done at the General Contractor's expense, 2.06 FINAL ACCEPTANCE A. Review', Review for Final Acceptance shall be held in conjunction with the final review of Section 4-A & B, Planting and ConSIrUction. U B. Acceptance; Work under this Section will be accepted by Landscape Architect upon satisfactory completion of all work. Upon Final Acceptance at the end of the maintenance period, including backfilling of, walls, Owner will assume responsibility for maintenance of the work. Said assumption does not relieve Contractor of obligations under Warranty. PA R T 3_-_AA1 4 TERIA L S Materials shall be of 'first quality and of domestic manufacture as noted below: : A A. f_-.�oncrete masonry units f -%STM C 90, Grade N-1, hollow, normal weight lad bearing units, i . Types and sizes: As indicated on drawings, 2, Color: As indicated on Clolol, Schedule. B. Portland cement: ASTIVI C 150, Type I or Type I! C. Aggregates: 1 Sand: AS"FIVI(D 144, c -lean, hard, strong, durable, free from iniurious amounts of saline, alkaline, organic or other deleterious substances, with not less than 3 percent by weight passing No. 100 sieve. Z Pea gravel: ASIFM C 404, worked and graded with no more than 15 percent passing No, 8 sieve and with i 00 percent passing 3188 inch sieve, D. Water: Clean , portable, from domestic supply. E. Hydrated time: ASTIVI C 207, Type S, and containing 85% by weigh" of' calcium oxide. F. Admixture for grout: Material acceptable to Architect. Obtain acceptance from Project Supervisor prior to use. I Use according 'to manufacturer's printed instructions, Secure manufacturer or distributor initial supervision by a qualified field representative to assure proper use of admixture-. G. Mineral color pigments: Pure ground mineral Pon -fading oxides, lime and alkali proof, Colors as selected by Landscape Architect where applicable. H. Cleaning material: Sure Klean No. 600 detergent, by Process Solvent (Do., Inc., or equivalent. L Expansion joint filler: ASTM (D� 1751. J. Sealant materials: As noted on plans, K. Submit Catalogue Cut Cementitious waterproofing material. L. Vertical expansion joints: In concrete masonry wall construction shall be a minimum 20' - ORI apart. Use breaking bond whether for exposed or stuccoed masonry wall work. PAPT4- Each item of Work shall include excavations for foundations and footings, concrete masonry block, deformed biltet-steel bars, Douglas Fir wood grant, stucco finishing and backfilling clean-upto the satisfaction of the Owner. 4.01 LAYOUT B. Curing shall be as follows; All walls are to be staked in the field for top of footing, top of wall, lengths of waits and all steps in wallsi on, All exposed surfaces of concrete sl-fal I bei protected form premature dryVng and I f eld. Any changes or deviations which a the souare footage "as staked" in the 1i dd or delete concrete block freshty, plegce(d concrete shall be protected against'wash� by rair), All concreta, ? walls will be corrected or approved P,%y Project Superintendent and ad�ifusted by drawings submitted and shall be kept wet f -or a period of ten dao, affer placihg� In order, that cunngwate,r� approved by Landscape Architect and Project Superintendent Any overages will be per square toottlineal may, reach both surfaces of walls, the formst shall, be r6osoned and2livater shall b&, foot unit cost� pourecr over the tops of the waits and allibwed to run cloWn between the concrete and'the forms. A, Mortar: Type S in accord with UBC 'Clhapter 24. 1 . Color: As indicated on plans. B� Grout: in accord with UBC Chapter 24, with exception that lime shall not be used. C. Dispose of mortar and grout not used within 30 minutes after leaving mixer. Retempering of mixture will be allowed in accord with UBC Chapter 24. D. Mortar and grout minimum compressive strength: 4 Mortar, 28 days 1,800 psi Z Grout: 28 days 2,000 psi E After all! ingredients are in the batch mixer, mix mechanically for not less than three minutes. Do not use hand mixing unless specifically acceptable to Project Superintendent, 4.07 WORKMANSHIP A. Preserve unobstructed vertical continuity of cells to be filled, Fully bed webs and crosswalls forming such cells in mortar to prevent leakage of grout, B. Fractional parts of masonry units are prohibited where whole units can be used. Chinking of interstices with fragments will, not be allowed, Provide special units as necessary to form openings and lintels. C� Do not construct any part of any masonry wall more than 6 feet higher than adjoining portions. D. Where absolutely necessary, for construction purposes to stop off longitudinal runs of masonry, stop off only by racking back one-half unit length in each course. Toothing ,t�half not be permitted. Ea At openings for ducts, pipes and conduit built into masonry walls, cut to form fractional units with abrasive saw. E Align vertical cells to maintain continuous unobstructed cell area. G. Set units with joints straight and uniform in width. 4.08 JOINTS AND COURSING - EXPOSED MASONRY A� joints, Raked as exposed masonry and flush with stuccoed, concave tooled with brick. & Bond.- Common running bond, unless otherwise indicated. C. Joints- 3/8inch wide. D. Keep all areas to be groutedfree from mortar so that grout will contact foundation. E. Perform tooling or raking when mortar is partially set but still sufficiently plastic to bond. Use a tool which compacts mortar, pressing excess mortar out -of joint rather than dragging it out. F. Rake out Joints which are not tight at time of tooting., point and then tool - where applicable. G. Butter vertical head joints well for thickness equalto face shell of unft and shove these joints tightly so that mortar bonds well to both units. - 1 Fit, joints solidly from face of block to at least depth of face shell, H. Set lintels, capping units and bearing plates in a full bed of mortar. 1. Control joints shall be as detailed, Apply sealant, where required, in accord with plans and specifii cations. 4.09 GROUTING A� Fill all masonry cells containing reinforcing steel solidly with grout.Alt finished course, stop grout one-half the course height below top of last course grouted. B. Keep mortar dropping out of or remove from grout space before grouting. C. Puddle grout or vibrate in place. D. Grout bolts and anchors inserted in wall solidly in place so that there s a minimum of I inch of grout between bolt an� masonry unit, unless otherwise indicated. E. Set bolts, frames and inserts necessary for attachment of subsequent Work must be secured in place priorto grouting. 4.10 POINTING AND CLEANING A. Immediately remove from exposed surfaces surplus mortar, grout, foreign material, and stains. a. Defective Joints-, Point holes or defective mortar Joints in exposed masonry and cut out and repoint defective) oints. Rep'lace chipped or broken masonry units. Q Stainina and excess mortar: Protect exposed masonry against grout staining, Where grout o -r mortar does contact the faces of masonry, remove it immediately. Should accidental spillage occur, wash and clean surfaces immediately with a 10% muratic acid and water sdution, followed by a thorough water rinse. Remove stains where they occur. D. Clean efflorescence from masonry with specified cleaner in accord with cleaner manufacturerts instructions. E. After wall in constructed, do not saturate with water for curing or any other purpose. 4.11 STUCCO SURFACING A. Wood Framed Walls: Stucco shall be three coat work not less then 7/8" thiCk. (a" Scratch coat shall be approximately 1/2" thick. Before the scratch coat has set, it shall be well cross -scratched to provide a strong bond and damr, cured for at least 48 hours. (b). Brown coat shall be 1/4" thick. When brown coat has set sufficiently it shall be floated with a dry float to form a bond for the finish coat. Brown coat shall be applied no sooner than 48 hours after application of scratch coat. Scratch coat shall be dampened evenly before application of brown coat to provide even suction. re), rinish color coatt shiall be approximaieiy 1 fbo" thick an -a' sh ail be appiied and damp cured strictly in accordance with the manufacturer's directions, and city and local governing bodies. 2� Stucco shall be Merlax, La Habra or approved equal as per color selection by Landscape Architect. 3, Packaged material shall be deliveredin the original packages, containers or bundles bearing the name of manufacturer and the brand name, 4. Texture to be rubber float finish �scrub coat) or as approved by Landscape I k Architect. 5. All exposed foundations shall receive one application of finish color coat to match building color, & All stucco shall be water proofed up to three feet above finish grade with Thompson's Water Sealer or equal. B. Block Wal Is Stucco shall be two coatwork notless than 1/2" thick. (a), Brown coat shall be approximately 318" thick, Float with a dry float to torm a bond for the finish coat. (b). Finish color coat shall be approximately 1/8" thick and shall be applied and damp cured strictly in accordance with the manufacturer's direction including city and governing bodies, 2. Color and manufacturer shall be selected and approved by Landscape Architect,,. 3. Deliver packaged material in original packages bearing the manufacturer's and brand names. 4, Texture as called outt on plan or IF. IPt. field approval. 5. All exposed foundation shall receive one application of finish color coat to match building color. 4.12 CLEANUP All subcontractor's materials and tools of the trade shall be removed from the job sitte upon completion of END OF SECTION SITE CARPENTRY, Grades of California Redwood Lumber"graded under the rules of the Redwood Inspection Service. B. Lumber, 1 All lumber shall conform to the allowable characteristics permitted within the applicable grading rules. No splits, checks, holes, decay or other irregularities will be permitted except those characteristic of that grade. Z Unless otherwise indicated on Drawings or Specifications, lumber shall be either redwood construction heart and /or douglas fir, resawn, with no exposed sapwood, 3, Header; Construction heart grade redwood header and stake, where applicable. SAS or rioughsawn as detailed. C� Ha-rdware: 1 Galvanized'. All hardware required for fabrication, including brackets, hangers, hinges, fasteners, and nails shall be hot -dip galvanized, Screws, nuts, bolt's, and washers shall be ho.1-dip galvaniZed or cadmium plated. 2. Additional Hardware; When shown on the plans and in addition to hardware, structural members fabricated from steel, concrete, or other materials shall be incorporated into the -structure. BAR 7: 4 - EXECUTON 4.01 QUALITY Workmanship shall be first-class throughout. All lumber shall be accurately cut and framed to a close fit and shall have even bearing over the entire contact surfaces. All joints shall be square and tight unless otherwise shown. No shimming will be permitted in making joints. 'Work shall befree of hammer marks, dents or other disfiguration. Nails to be seated flush unless otherwise shown. Unless otherwise indicated on Drawings, countersink finishing nails 1/16 inch. Unless otherwise indicated on drawings, holes for Countersunk bolts shall be bored with a bit 1/6 inch larger -than the accompanying washer and to a depth which allows bolt head to be secured flush with finish surface of wood mernb�r. Holes for lag screws shall be same size as diameter of inner shank (bolt size minus depth of thread). 4.02 HARDWARE A. All bolts 5/8 inch and lessin diameter shall be fitted with cut washers, and all bolts and lag screws over 5,S inch in diameter shall be fitted with cast or malleable iron washers, unless otherwise shown on the olans. B. All exposed hardware items shall be installed as het -dipped galvanized unless otherwise instructed on plan. 4.03 NAILING When toe nailing of structural members is required, toe nailing shall be at an angle and penetration to firmly secure member. 4.04 EASED EDGES Edges of seat decks, benches, handrails, planter caps and other exposed or leading corners are to be eased. 4.05 HEADERS Headers are to be installed in accordance with plans and details. 4.06 CLEANUP All subcontractor's materials and tools of the trade shall be removed from the job site upon completion of work, Subcontractor shall be responsible for damage to thefinished surfaces of other work. IS-Dubcontractor gularantess all work will be performed in a good and workmanlike manner. PART 5 _-_WARBANTJES In addition to manufacturers' guarantees or warranties, all work shall be warranted for one year from the date of Final Acceptance against defects in materials and workmanship by Contractor. Warranty shall also cover repair of damage to a�y part of the premises resulting from defects in materials and workmanship, to the satisfaction of the Owner. END OF SECTION NUMNOW 2.04 SCAFFOLDING AND PROTECTION Furnish, maintain and remove all scaffolding and ladders required for this work, and all drop clothes for the protection of livalks, fixtures% or other surfaces not to be painted. Painted and finished surfaces subject to damage or defacoment,slha.11 1�e properl)y protected and covered. Contractor shall be responsible for any and all damage to pairitEki wiorkl, and to that of other work caused by operations under this Section. part 13, materials, END OF SECTION TUBULAR STEEL FA BUT - 14-- - S -COP- E-0- E - WO R K 1.01 WORK INCLUDED 2.01 QUALITY ASSURANCE A. Qualifications: 1. Perform shop welding on the premises of a fabricator licensed by the City Building and Safety Department. 2. Perform welding by welders approved and certified in accordance with requirements of AWS. B. Reference Standards: 1 . "AISC/ Steel Construction Manucal'. 2. "Code for Are and Gas Welding in Building Construction". AWS D11 .0 of -the American Welding Society. 3. Weml Finished Manual", of the National Association of Architectural Metal X Manulacturers (NAAMM). 2.02 SUBMITTALS A. Submit complette shop drawings to the Landscape Architect and/or Owner's Representative for review in advance of fabrication. Show 'the following on the shop drawings: 1 Show dimensions, sites, thicknesses, gauges, f1i nishes, joining, attachments and relationship to adjacent work. 2. Where welded connections, concrete inserts-, and other items are required to receive other work, show exact locations required. 3. For standard manufactured items, submit work sheets showing illustrates cuts of items to be furnished, scale. details and dimensions. 2.03 COORDINATION WITH OTHER WORK A. Examine drawings and specifications, and include all miscellaneous metal work which is 11 not distinctly specified in other sections. B. Provide all connections, anchors, bolts, welding, cutting, punching, drilling, tapping or other connecting required to fit miscellaneous metal with other work. G. Provide iternsto be installed by other trades well in advance, to permit proper sequencing and scheduling of other work, D. Conceal all connections in the finished work, where possible, Exposedscrew connections shall be Allenhead screws matching -the material they fasten, E. Set base plate for support posts, true and plumb in concrete footing per details. F. Protect ail dissimilar metals from galvanic corrosion by pressure tapes, coatings, or G. After erection, clean off all rust, scale and oil. Clean field welds, bolts, and abraded areas. Touch-up all areas with the same material as used for the shop coat, leaving all surfaces ready to receive finish coats, Apply second coat of primer on site. H. Apply one primer coat and two finish coats of exterior metal enamel to metal surfaces, color as selected by Owner's Representative. REV REVISION DESCRIPTION BAB -L3-- AVA TER A L S Materials shall be of first quality and of domestic mamdacture as noted below: END OF SECTION 1111111M 11 U) UJ U) L=28 7 9 8 OF 9 SHTS.