ADDENDUM NO. 1 APRIL 13, 2018...- Simple Structural Systems and who can produce an Erectors' Post Audit Declaration, according to PCI MNL 127, "PCI Erector's Manual - Standards and

S c h m id t A s s o c ia t e s , I n c . S A I P r o j e c t 2 0 1 6 - 1 1 4 . S S R

S u m m e r h a v e n S h o o t in g R a n g e

A D D E N D U M N O . 1 1

ADDENDUM NO. 1 APRIL 13, 2018 PREPARED BY SCHMIDT ASSOCIATES FOR: SUMMERHAVEN SHOOTING RANGE KRAMER ONE, INC., MAINE DEPARTMENT OF INLAND FISHERIES & WILDLIFE

This Addendum consists of 3 Addendum pages and 26 attachment pages totaling 29 pages.

Acknowledge receipt of this Addendum by inserting its number on the Bid Form. Failure to do so may subject the Bid to disqualification. This Addendum is part of the Contract Documents.

Bidder is encouraged to verify with reprographer of record all Addenda issued (do not rely exclusively on third party plan room services).

PART 1 - CHANGES TO PRIOR ADDENDA (NOT APPLICABLE)

PART 2 - CHANGES TO THE PROJECT MANUAL

Modifications described herein shall be incorporated in the Project Manual. All other Work shall remain unchanged.

2.1 DIVISION 01 – GENERAL REQUIREMENTS

A. Section 012100 “ALLOWANCES”

1. DELETE Section 012100 “ALLOWANCES” in its entirety. There are no allowances for this Project.

B. Section 012300 “ALTERNATES”

1. Revise Alternate No. 2 Description as follows:

a. “Alternate No. 2: Electrical Alternate No. 2 - Provide all labor, equipment, and materials to provide secondary wire and conduit from electrical panel at the State fish hatchery located approximately 1,400’ east of the proposed shooting range. The service shall be installed on poles as coordinated with the Owner. A 125A load center with 100A main breaker will be utilized for power distribution. The Contractor shall field check all conditions prior to bidding and make all required connections for service. For a field visit, contact Diano Circo at 207-287-3128.”

2.2 DIVISION 03 – CONCRETE

A. Section 034100 “PRECAST STRUCTURAL CONCRETE”




1. ADD Section per the attached.

PART 3 - CHANGES TO THE DRAWINGS

Modifications described herein shall be incorporated in the Drawings. All other Work shall remain un-changed.

3.1 C-SERIES DRAWINGS

A. Drawing Number CL101

1. DELETE AND REPLACE Drawing CL101 in its entirety.

B. Drawing Number CL402


C. Drawing Number CL403


D. Drawing Number CU101

1. DELETE AND REPLACE Drawing CU101 in its entirety.

3.2 S-SERIES DRAWINGS

A. CS201 – STRUCTURAL PLAN

1. DELETE AND REPLACE Drawing CS201 in its entirety.

B. CS401 – STRUCTURAL DETAILS


C. CS402 – STRUCTURAL DETAILS


END OF ADDENDUM 1

AVAILABLE PROJECT INFORMATION

The following information is being made available to Bidders for informational purposes only and is not a part of the Addendum.

The following Questions and responses are included for the Bidders’ information.




PRE-BID ATTENDANCE

The following Pre-Bid Sign-In Sheet is being made available to Bidders for informational purposes only and is not a part of the Addendum.

Schmidt Associates, Inc. 2016-114.SSR - Summerhaven Shooting Range

SECTION 034100 - PRECAST STRUCTURAL CONCRETE

GENERALPART 1 -

RELATED DOCUMENTS1.1

Drawings and general provisions of the Contract, including General and SupplementaryA.

Conditions and Division 01 Specification Sections, apply to this Section.

SUMMARY1.2

Section Includes:A.

Precast structural concrete.1.

Related Requirements:B.

Section 033000 "Cast-in-Place Concrete" for placing connection anchors in concrete.1.

Section 051200 "Structural Steel Framing" for furnishing and installing connections2.

attached to structural-steel framing.

Section 071900 "Water Repellents" for water-repellent finish treatments.3.

DEFINITIONS1.3

Design Reference Sample: Sample of approved precast structural concrete color, finish, andA.

texture, preapproved by Architect.

ACTION SUBMITTALS1.4

Product Data: For each type of product.A.

Design Mixtures: For each precast concrete mixture. Include compressive strength and, ifB.

required, water-absorption tests.

Shop Drawings:C.

Include member locations, plans, elevations, dimensions, shapes and sections,1.

openings, support conditions, and types of reinforcement, including special

reinforcement.

Detail fabrication and installation of precast structural concrete units, including2.

connections at member ends and to adjoining construction.

Indicate joints, reveals, drips, chamfers, and extent and location of each surface finish.3.

Indicate separate face and backup mixture locations and thicknesses.4.

PRECAST STRUCTURAL CONCRETE 034100 - 1


Indicate type, size, and length of welded connections by AWS standard symbols.5.

Detail loose and cast-in hardware, lifting and erection inserts, connections, and joints.6.

Indicate locations, tolerances, and details of anchorage devices to be embedded in or7.

attached to structure or other construction.

Include and locate openings larger than 10 inches. Where additional structural support8.

is required, include header design.

Indicate location of each precast structural concrete unit by same identification mark9.

placed on panel.

Indicate relationship of precast structural concrete units to adjacent materials.10.

Indicate locations, dimensions, and details of thin-brick units, including corner units and11.

special shapes, and joint treatment.

Indicate locations, dimensions, and details of stone facings, anchors, and joint widths.12.

Indicate estimated camber for precast floor slabs with concrete toppings.13.

Indicate shim sizes and grouting sequence.14.

If design modifications are proposed to meet performance requirements and field15.

conditions, submit design calculations and Shop Drawings. Do not adversely affect the

appearance, durability, or strength of units when modifying details or materials and

maintain the general design concept.

Samples:D.

For each type of finish indicated on exposed surfaces of precast structural concrete1.

units with architectural finish, in sets of three, representative of finish, color, and

texture variations expected; approximately 12 by 12 by 2 inches.

Where other faces of precast concrete unit are exposed, include Samplesa.

illustrating workmanship, color, and texture of backup concrete as well as facing

concrete.

Delegated-Design Submittal: For precast structural concrete indicated to comply withE.

performance requirements and design criteria, including analysis data signed and sealed by

the qualified professional engineer responsible for their preparation who is registered in the

State of Maine.

Show precast structural concrete unit types, connections, types of reinforcement,1.

including special reinforcement, and concrete cover on reinforcement. Indicate

location, type, magnitude, and direction of loads imposed on the building structural

frame from precast structural concrete.

INFORMATIONAL SUBMITTALS1.5

Qualification Data: For Installer fabricator.A.

Welding certificates.B.

Material Certificates: For the following:C.

Cementitious materials.1.



Reinforcing materials and prestressing tendons.2.

Admixtures.3.

Bearing pads.4.

Insulation.5.

Structural-steel shapes.6.

Material Test Reports: For aggregates, by a qualified testing agency.D.

Preconstruction test reports.E.

Source quality-control reports.F.

Field quality-control and special inspection reports.G.

QUALITY ASSURANCE1.6

Fabricator Qualifications: A firm that assumes responsibility for engineering precast structuralA.

concrete units to comply with performance requirements. Responsibility includes preparation

of Shop Drawings and comprehensive engineering analysis by a qualified professional

engineer.

Designated as a PCI-certified plant as follows:1.

Group C, Category C3 - Prestressed Straight Strand Structural Members.a.

Fabricator is located within 500 miles of Project site.2.

Installer Qualifications: A precast concrete erector qualified and designated by PCI's CertificateB.

of Compliance, to erect Category S1 - Simple Structural Systems.

Installer Qualifications: An experienced precast concrete erector who has retained a "PCI-C.

Certified Field Auditor" to conduct a field audit of a project installed by erector in Category S1

- Simple Structural Systems and who can produce an Erectors' Post Audit Declaration,

according to PCI MNL 127, "PCI Erector's Manual - Standards and Guidelines for the Erection

of Precast Concrete Products."

Testing Agency Qualifications: Qualified according to ASTM C 1077 and ASTM E 329 for testingD.

indicated.

Quality-Control Standard: For manufacturing procedures, testing requirements, and quality-E.

control recommendations for types of units required, comply with PCI MNL 116, "Manual for

Quality Control for Plants and Production of Structural Precast Concrete Products."

Welding Qualifications: Qualify procedures and personnel according to the following:F.

AWS D1.1/D1.1M, "Structural Welding Code - Steel."1.



COORDINATION1.7

Furnish loose connection hardware and anchorage items to be embedded in or attached toA.

other construction before starting that Work. Provide locations, setting diagrams, templates,

instructions, and directions, as required, for installation.

DELIVERY, STORAGE, AND HANDLING1.8

Support units during shipment on nonstaining shock-absorbing material in same position asA.

during storage.

Store units with adequate bracing and protect units to prevent contact with soil, to preventB.

staining, and to prevent cracking, distortion, warping or other physical damage.

Store units with dunnage across full width of each bearing point unless otherwise1.

indicated.

Place adequate dunnage of even thickness between each unit.2.

Place stored units so identification marks are clearly visible, and units can be inspected.3.

Handle and transport units in a manner that avoids excessive stresses that cause cracking orC.

damage.

Lift and support units only at designated points indicated on Shop Drawings.D.

PRODUCTSPART 2 -

PERFORMANCE REQUIREMENTS2.1

Delegated Design: Engage a qualified professional engineer, as defined in Section 014000A.

"Quality Requirements," to design precast structural concrete units.

Design Standards: Comply with ACI 318 and with design recommendations in PCI MNL 120,B.

"PCI Design Handbook - Precast and Prestressed Concrete," applicable to types of precast

structural concrete units indicated.

Structural Performance: Precast structural concrete units and connections shall withstandC.

design loads indicated within limits and under conditions indicated.

Structural Performance: Provide precast structural concrete units and connections capable of?.

withstanding the following design loads within limits and under conditions indicated on

drawings.



MOLD MATERIALS2.2

Molds: Rigid, dimensionally stable, non-absorptive material, warp and buckle free, thatA.

provides continuous precast concrete surfaces within fabrication tolerances indicated;

nonreactive with concrete and suitable for producing required finishes.

Mold-Release Agent: Commercially produced form-release agent that does not bond1.

with, stain, or adversely affect precast concrete surfaces and does not impair

subsequent surface or joint treatments of precast concrete.

Surface Retarder: Chemical set retarder, capable of temporarily delaying setting of newlyB.

placed concrete mixture to depth of reveal specified.

REINFORCING MATERIALS2.3

Reinforcing Bars: ASTM A 615/A 615M, Grade 60, deformed.A.

Plain-Steel Welded Wire Reinforcement: ASTM A 185/A 185M, fabricated from as-drawn steelB.

wire into flat sheets.

Supports: Suspend reinforcement from back of mold or use bolsters, chairs, spacers, and otherC.

devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement

in place according to PCI MNL 116.

PRESTRESSING TENDONS2.4

Pretensioning Strand: ASTM A 416/A 416M, Grade 250 or Grade 270, uncoated, seven-wire,A.

low-relaxation strand.

Unbonded Post-Tensioning Strand: ASTM A 416/A 416M, Grade 270, uncoated, seven-wire,B.

low-relaxation strand.

Coat unbonded post-tensioning strand with post-tensioning coating complying with ACI1.

423.7 and sheath with polypropylene tendon sheathing complying with ACI 423.7.

Include anchorage devices and coupler assemblies.

Post-Tensioning Bars: ASTM A 722/A 722M, uncoated high-strength steel bar.C.

CONCRETE MATERIALS2.5

Regional Materials: Precast structural concrete shall be manufactured from aggregates andA.

cement that have been extracted or recovered, as well as manufactured, within 500 miles of

Project site.

Portland Cement: ASTM C 150/C 150M, Type I or Type III, gray, unless otherwise indicated.B.



For surfaces exposed to view in finished structure, use gray or white cement, of same1.

type, brand, and mill source.

Supplementary Cementitious Materials:C.

Fly Ash: ASTM C 618, Class C or F, with maximum loss on ignition of 3 percent.1.

Metakaolin: ASTM C 618, Class N.2.

Silica Fume: ASTM C 1240, with optional chemical and physical requirement.3.

Ground Granulated Blast-Furnace Slag: ASTM C 989, Grade 100 or 120.4.

Blended Hydraulic Cement: ASTM C 595/C 595M, Type IS, portland blast-furnace slag5.

cement.

Normal-Weight Aggregates: Except as modified by PCI MNL 116, ASTM C 33/C 33M, withD.

coarse aggregates complying with Class 5M. Stockpile fine and coarse aggregates for each

type of exposed finish from a single source (pit or quarry) for Project.

Face-Mixture-Coarse Aggregates: Selected, hard, and durable; free of material that1.

reacts with cement or causes staining; to match selected finish sample.

Gradation: Uniformly graded.a.

Face-Mixture-Fine Aggregates: Selected, natural or manufactured sand compatible with2.

coarse aggregate to match approved finish sample.

Water: Potable; free from deleterious material that may affect color stability, setting, orE.

strength of concrete and complying with chemical limits of PCI MNL 116.

Air-Entraining Admixture: ASTM C 260, certified by manufacturer to be compatible with otherF.

required admixtures.

Chemical Admixtures: Certified by manufacturer to be compatible with other admixtures andG.

to not contain calcium chloride, or more than 0.15 percent chloride ions or other salts by

weight of admixture.

Water-Reducing Admixtures: ASTM C 494/C 494M, Type A.1.

Retarding Admixture: ASTM C 494/C 494M, Type B.2.

Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type D.3.

Water-Reducing and Accelerating Admixture: ASTM C 494/C 494M, Type E.4.

High-Range, Water-Reducing Admixture: ASTM C 494/C 494M, Type F.5.

High-Range, Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type G.6.

Plasticizing Admixture: ASTM C 1017/C 1017M, Type I.7.

Plasticizing and Retarding Admixture: ASTM C 1017/C 1017M, Type II.8.

Corrosion-Inhibiting Admixture: ASTM C 1582/C 1582M.9.

STEEL CONNECTION MATERIALS2.6

Carbon-Steel Shapes and Plates: ASTM A 36/A 36M.A.



Carbon-Steel-Headed Studs: ASTM A 108, Grade 1010 through 1020, cold finished, AWSB.

D1.1/D1.1M, Type A or B, with arc shields and with minimum mechanical properties of PCI

MNL 116.

Carbon-Steel Plate: ASTM A 283/A 283M, Grade C.C.

Malleable-Iron Castings: ASTM A 47/A 47M, Grade 32510 or Grade 35028.D.

Carbon-Steel Castings: ASTM A 27/A 27M, Grade 60-30.E.

High-Strength, Low-Alloy Structural Steel: ASTM A 572/A 572M.F.

Carbon-Steel Structural Tubing: ASTM A 500/A 500M, Grade B or Grade C.G.

Wrought Carbon-Steel Bars: ASTM A 675/A 675M, Grade 65.H.

Deformed-Steel Wire or Bar Anchors: ASTM A 496/A 496M or ASTM A 706/A 706M.I.

Carbon-Steel Bolts and Studs: ASTM A 307, Grade A; carbon-steel, hex-head bolts and studs;J.

carbon-steel nuts, ASTM A 563; and flat, unhardened steel washers, ASTM F 844.

High-Strength Bolts and Nuts: ASTM A 325 or ASTM A 490 Type 1, heavy hex steel structuralK.

bolts; heavy hex carbon-steel nuts, ASTM A 563; and hardened carbon-steel washers, ASTM F

436.

Do not zinc coat ASTM A 490 bolts.1.

Zinc-Coated Finish: For exterior steel items and items indicated for galvanizing, apply zincL.

coating by hot-dip process according to ASTM A 123/A 123M or ASTM A 153/A 153M.

Galvanizing Repair Paint: High-zinc-dust-content paint with dry film containing not less1.

than 94 percent zinc dust by weight, and complying with DOD-P-21035B or SSPC-Paint

20.

Shop-Primed Finish: Prepare surfaces of nongalvanized-steel items, except those surfaces toM.

be embedded in concrete, according to requirements in SSPC-SP 3, and shop apply lead- and

chromate-free, rust-inhibitive primer, complying with performance requirements in MPI 79

according to SSPC-PA 1.

Welding Electrodes: Comply with AWS standards.N.

Precast Accessories: Provide clips, hangers, plastic or steel shims, and other accessoriesO.

required to install precast structural concrete units.

STAINLESS-STEEL CONNECTION MATERIALS2.7

Stainless-Steel Plate: ASTM A 666, Type 304, Type 316, or Type 201.A.



Stainless-Steel Bolts and Studs: ASTM F 593, Alloy Group 1 or 2, hex-head bolts and studs;B.

ASTM F 594, Alloy Group 1 or 2 stainless-steel nuts; and flat, stainless-steel washers.

Lubricate threaded parts of stainless-steel bolts with an antiseize thread lubricant1.

during assembly.

Stainless-Steel-Headed Studs: ASTM A 276, Alloy 304 or 316, with minimum mechanicalC.

properties of PCI MNL 116.

BEARING PADS2.8

Provide one of the following bearing pads for precast structural concrete units asA.

recommended by precast fabricator for application:

Elastomeric Pads: AASHTO M 251, plain, vulcanized, 100 percent polychloroprene1.

(neoprene) elastomer, molded to size or cut from a molded sheet, 50 to 70 Shore, Type

A durometer hardness, ASTM D 2240; minimum tensile strength 2250 psi, ASTM D 412.

Random-Oriented-Fiber-Reinforced Elastomeric Pads: Preformed, randomly oriented2.

synthetic fibers set in elastomer. 70 to 90 Shore, Type A durometer hardness, ASTM D

2240; capable of supporting a compressive stress of 3000 psi with no cracking, splitting,

or delaminating in the internal portions of pad. Test one specimen for every 200 pads

used in Project.

Cotton-Duck-Fabric-Reinforced Elastomeric Pads: Preformed, horizontally layered3.

cotton-duck fabric bonded to an elastomer; 80 to 100 Shore, Type A durometer

hardness, ASTM D 2240; complying with AASHTO's "AASHTO LRFD Bridge Design

Specifications," Division II, Section 18.10.2; or with MIL-C-882E.

Frictionless Pads: PTFE, glass-fiber reinforced, bonded to stainless- or mild-steel plate,4.

or random-oriented-fiber-reinforced elastomeric pads; of type required for in-service

stress.

High-Density Plastic: Multimonomer, nonleaching, plastic strip.5.

ACCESSORIES2.9

Reglets: Specified in Section 076200 "Sheet Metal Flashing and Trim."A.

Reglets: PVC extrusions, Stainless steel, Type 302 or Type 304, Copper, felt or fiber filled, orB.

with face opening of slots covered.

Precast Accessories: Provide clips, hangers, high-density plastic or steel shims, and otherC.

accessories required to install structural precast concrete units.



GROUT MATERIALS2.10

Sand-Cement Grout: Portland cement, ASTM C 150/C 150M, Type I, and clean, natural sand,A.

ASTM C 144 or ASTM C 404. Mix at ratio of 1 part cement to 2-1/2 to 3 parts sand, by volume,

with minimum water required for placement and hydration. Water-soluble chloride ion

content less than 0.06 percent by weight of cement when tested according to ASTM C 1218/C

1218M.

Nonmetallic, Nonshrink Grout: Packaged, nonmetallic, noncorrosive, nonstaining groutB.

containing selected silica sands, portland cement, shrinkage-compensating agents, plasticizing

and water-reducing agents, complying with ASTM C 1107/C 1107M, Grade A for drypack and

Grades B and C for flowable grout and of consistency suitable for application within a 30-

minute working time. Water-soluble chloride ion content less than 0.06 percent by weight of

cement when tested according to ASTM C 1218/C 1218M.

CONCRETE MIXTURES2.11

Prepare design mixtures for each type of precast concrete required.A.

Use fly ash, pozzolan, ground granulated blast-furnace slag, and silica fume as needed1.

to reduce the total amount of portland cement, which would otherwise be used, by not

less than 40 percent.

Design mixtures may be prepared by a qualified independent testing agency or by qualifiedB.

precast plant personnel at precast structural concrete fabricator's option.

Limit water-soluble chloride ions to maximum percentage by weight of cement permitted byC.

ACI 318 or PCI MNL 116 when tested according to ASTM C 1218/C 1218M.

Normal-Weight Concrete Mixtures: Proportion full-depth mixture by either laboratory trialD.

batch or field test data methods according to ACI 211.1, with materials to be used on Project,

to provide normal-weight concrete with the following properties:

Compressive Strength (28 Days): 5000 psi.1.

Maximum Water-Cementitious Materials Ratio: 0.45.2.

Water Absorption: For structural precast concrete with an architectural finish, limit waterE.

absorption to 6 percent by weight or 14 percent by volume, tested according to ASTM C 642,

except for boiling requirement.

Add air-entraining admixture at manufacturer's prescribed rate to result in concrete at pointF.

of placement having an air content complying with PCI MNL 116.

When included in design mixtures, add other admixtures to concrete mixtures according toG.

manufacturer's written instructions.



Concrete Mix Adjustments: Concrete mix design adjustments may be proposed ifH.

characteristics of materials, Project conditions, weather, test results, or other circumstances

warrant.

FABRICATION2.12

Cast-in Anchors, Inserts, Plates, Angles, and Other Anchorage Hardware: Fabricate anchorageA.

hardware with sufficient anchorage and embedment to comply with design requirements.

Accurately position for attachment of loose hardware, and secure in place during precasting

operations. Locate anchorage hardware where it does not affect position of main

reinforcement or concrete placement.

Weld-headed studs and deformed bar anchors used for anchorage according to AWS1.

D1.1/D1.1M and AWS C5.4, "Recommended Practices for Stud Welding."

Furnish loose hardware items including steel plates, clip angles, seat angles, anchors, dowels,B.

cramps, hangers, and other hardware shapes for securing precast structural concrete units to

supporting and adjacent construction.

Cast-in reglets, slots, holes, and other accessories in precast structural concrete units asC.

indicated on the Contract Drawings.

Cast-in openings larger than 10 inches in any dimension. Do not drill or cut openings orD.

prestressing strand without Architect's approval.

Reinforcement: Comply with recommendations in PCI MNL 116 for fabricating, placing, andE.

supporting reinforcement.

Clean reinforcement of loose rust and mill scale, earth, and other materials that reduce1.

or destroy the bond with concrete. When damage to epoxy-coated reinforcement

exceeds limits specified in ASTM A 775/A 775M, repair with patching material

compatible with coating material and epoxy coat bar ends after cutting.

Accurately position, support, and secure reinforcement against displacement during2.

concrete-placement and consolidation operations. Completely conceal support devices

to prevent exposure on finished surfaces.

Place reinforcing steel and prestressing strand to maintain at least 3/4-inch minimum3.

concrete cover. Increase cover requirements for reinforcing steel to 1-1/2 inches when

units are exposed to corrosive environment or severe exposure conditions. Arrange,

space, and securely tie bars and bar supports to hold reinforcement in position while

placing concrete. Direct wire tie ends away from finished, exposed concrete surfaces.

Install welded wire fabric in lengths as long as practicable. Lap adjoining pieces at least4.

one full mesh spacing and wire tie laps, where required by design. Offset laps of

adjoining widths to prevent continuous laps in either direction.

Reinforce precast structural concrete units to resist handling, transportation, and erectionF.

stresses and specified in-place loads.



Prestress tendons for precast structural concrete units by either pretensioning or post-G.

tensioning methods. Comply with PCI MNL 116.

Delay detensioning or post-tensioning of precast, prestressed structural concrete units1.

until concrete has reached its indicated minimum design release compressive strength

as established by test cylinders cured under same conditions as concrete unit.

Detension pretensioned tendons either by gradually releasing tensioning jacks or by2.

heat cutting tendons, using a sequence and pattern to prevent shock or unbalanced

loading.

If concrete has been heat cured, detension while concrete is still warm and moist to3.

avoid dimensional changes that may cause cracking or undesirable stresses.

Protect strand ends and anchorages with bituminous, zinc-rich, or epoxy paint to avoid4.

corrosion and possible rust spots.

Protect strand ends and anchorages with a minimum of 1-inch- thick, nonmetallic,5.

nonshrink, grout mortar and sack rub surface. Coat or spray the inside surfaces of

pocket with bonding agent before installing grout.

Comply with requirements in PCI MNL 116 and in this Section for measuring, mixing,H.

transporting, and placing concrete. After concrete batching, no additional water may be

added.

Place face mixture to a minimum thickness after consolidation of the greater of 1 inch or 1.5I.

times the maximum aggregate size, but not less than the minimum reinforcing cover specified.

Place concrete in a continuous operation to prevent cold joints or planes of weakness fromJ.

forming in precast concrete units.

Place backup concrete mixture to ensure bond with face-mixture concrete.1.

Thoroughly consolidate placed concrete by vibration without dislocating or damagingK.

reinforcement and built-in items, and minimize pour lines, honeycombing, or entrapped air

voids on surfaces. Use equipment and procedures complying with PCI MNL 116.

Place self-consolidating concrete without vibration according to PCI TR-6, "Interim1.

Guidelines for the Use of Self-Consolidating Concrete in Precast/Prestressed Concrete

Institute Member Plants." Ensure adequate bond between face and backup concrete, if

used.

Comply with PCI MNL 116 procedures for hot- and cold-weather concrete placement.L.

Identify pickup points of precast structural concrete units and orientation in structure withM.

permanent markings, complying with markings indicated on Shop Drawings. Imprint or

permanently mark casting date on each precast structural concrete unit on a surface that does

not show in finished structure.



Cure concrete, according to requirements in PCI MNL 116, by moisture retention without heatN.

or by accelerated heat curing using live steam or radiant heat and moisture. Cure units until

compressive strength is high enough to ensure that stripping does not have an effect on

performance or appearance of final product.

Discard and replace precast structural concrete units that do not comply with requirements,O.

including structural, manufacturing tolerance, and appearance, unless repairs meet

requirements in PCI MNL 116 and meet Architect's approval.

FABRICATION TOLERANCES2.13

Fabricate precast structural concrete units to shapes, lines, and dimensions indicated so eachA.

finished unit complies with PCI MNL 116 product dimension tolerances as well as position

tolerances for cast-in items.

COMMERCIAL FINISHES2.14

Grade B Finish: Fill air pockets and holes larger than 1/4 inch in diameter with sand-cementA.

paste matching color of adjacent surfaces. Fill air holes greater than 1/8 inch in width that

occur more than once per 2 sq. in.. Grind smooth form offsets or fins larger than 1/8 inch.

Repair surface blemishes due to holes or dents in molds. Discoloration at form joints is

permitted.

SOURCE QUALITY CONTROL2.15

Testing Agency: Owner will engage a qualified testing agency to evaluate precast structuralA.

concrete fabricator's quality-control and testing methods.

Allow testing agency access to material storage areas, concrete production equipment,1.

concrete placement, and curing facilities. Cooperate with testing agency and provide

samples of materials and concrete mixtures as may be requested for additional testing

and evaluation.

Testing: Test and inspect precast structural concrete according to PCI MNL 116 requirementsB.

and ASTM C 1610/C 1610M, ASTM C 1611/C 1611M, ASTM C 1621/C 1621M, and ASTM C

1712/C 1712M.

Test and inspect self-consolidating concrete according to PCI TR-6.1.

Strength of precast structural concrete units is considered deficient if units fail to comply withC.

ACI 318 requirements for concrete strength.



If there is evidence that strength of precast concrete units may be deficient or may notD.

comply with ACI 318 requirements, employ a qualified testing agency to obtain, prepare, and

test cores drilled from hardened concrete to determine compressive strength according to

ASTM C 42/C 42M.

A minimum of three representative cores shall be taken from units of suspect strength,1.

from locations directed by Architect.

Test cores in an air-dry condition or, if units are wet under service conditions, test cores2.

after immersion in water in a wet condition.

Strength of concrete for each series of three cores is considered satisfactory if average3.

compressive strength is equal to at least 85 percent of 28-day design compressive

strength and no single core is less than 75 percent of 28-day design compressive

strength.

Report test results in writing on same day that tests are performed, with copies to4.

Architect, Contractor, and precast concrete fabricator. Test reports include the

following:

Project identification name and number.a.

Date when tests were performed.b.

Name of precast concrete fabricator.c.

Name of concrete testing agency.d.

Identification letter, name, and type of precast concrete unit(s) represented bye.

core tests; design compressive strength; type of break; compressive strength at

breaks, corrected for length-diameter ratio; and direction of applied load to core

in relation to horizontal plane of concrete as placed.

Patching: If core test results are satisfactory and precast structural concrete units comply withE.

requirements, clean and dampen core holes and solidly fill with same precast concrete

mixture that has no coarse aggregate, and finish to match adjacent precast concrete surfaces.

Defective Units: Discard and replace precast structural concrete units that do not comply withF.

requirements, including strength, manufacturing tolerances, and color and texture range.

Chipped, spalled, or cracked units may be repaired, subject to Architect's approval. Architect

reserves the right to reject precast units that do not match approved samples, sample panels,

and mockups. Replace unacceptable units with precast concrete units that comply with

requirements.

EXECUTIONPART 3 -

EXAMINATION3.1

Examine supporting structural frame or foundation and conditions for compliance withA.

requirements for installation tolerances, bearing surface tolerances, and other conditions

affecting performance of the Work.

Proceed with installation only after unsatisfactory conditions have been corrected.B.



Do not install precast concrete units until supporting, cast-in-place concrete has attainedC.

minimum allowable design compressive strength and until supporting steel or other structure

is structurally ready to receive loads from precast concrete units.

INSTALLATION3.2

Install clips, hangers, bearing pads, and other accessories required for connecting precastA.

structural concrete units to supporting members and backup materials.

Erect precast structural concrete level, plumb, and square within specified allowableB.

tolerances. Provide temporary structural framing, shoring, and bracing as required to maintain

position, stability, and alignment of units until permanent connections are complete.

Install temporary steel or plastic spacing shims or bearing pads as precast structural1.

concrete units are being erected. Tack weld steel shims to each other to prevent shims

from separating.

Maintain horizontal and vertical joint alignment and uniform joint width as erection2.

progresses.

Remove projecting lifting devices and use plastic patch caps or sand-cement grout to fill3.

voids within recessed lifting devices flush with surface of adjacent precast surfaces

when recess is exposed.

Connect precast structural concrete units in position by bolting, welding, grouting, or asC.

otherwise indicated on Shop Drawings. Remove temporary shims, wedges, and spacers as

soon as practical after connecting and grouting are completed.

Do not permit connections to disrupt continuity of roof flashing.1.

Field cutting of precast units is not permitted without approval of Architect.D.

Fasteners: Do not use drilled or powder-actuated fasteners for attaching accessory items toE.

precast, prestressed concrete units.

Welding: Comply with applicable requirements in AWS D1.1/D1.1M and AWS D1.4/D1.4M forF.

welding, welding electrodes, appearance, quality of welds, and methods used in correcting

welding work.

Protect precast structural concrete units and bearing pads from damage by field1.

welding or cutting operations, and provide noncombustible shields as required.

Clean weld-affected steel surfaces with chipping hammer followed by brushing, and2.

apply a minimum 4.0-mil- thick coat of galvanized repair paint to galvanized surfaces

according to ASTM A 780/A 780M.

Clean weld-affected steel surfaces with chipping hammer followed by brushing, and3.

reprime damaged painted surfaces.

Visually inspect welds and remove, reweld, or repair incomplete and defective welds.4.



ERECTION TOLERANCES3.3

Erect precast structural concrete units level, plumb, square, and in alignment withoutA.

exceeding the noncumulative erection tolerances of PCI MNL 135.

Minimize variations between adjacent slab members by jacking, loading, or other methodB.

recommended by fabricator and approved by Architect.

FIELD QUALITY CONTROL3.4

Special Inspections: Owner will engage a qualified special inspector to perform the followingA.

special inspections:

Erection of precast structural concrete members.1.

Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections.B.

Visually inspect field welds and test according to ASTM E 165 or to ASTM E 709 and ASTM EC.

1444. High-strength bolted connections are subject to inspections.

Testing agency will report test results promptly and in writing to Contractor and Architect.D.

Repair or remove and replace work where tests and inspections indicate that it does notE.

comply with specified requirements.

Additional testing and inspecting, at Contractor's expense, shall be performed to determineF.

compliance of replaced or additional work with specified requirements.

Prepare test and inspection reports.G.

REPAIRS3.5

Repair precast structural concrete units if permitted by Architect.A.

Repairs may be permitted if structural adequacy, serviceability, durability, and1.

appearance of units have not been impaired.

Mix patching materials and repair units so cured patches blend with color, texture, andB.

uniformity of adjacent exposed surfaces and show no apparent line of demarcation between

original and repaired work, when viewed in typical daylight illumination from a distance of 20

feet.

Prepare and repair damaged galvanized coatings with galvanizing repair paint according toC.

ASTM A 780/A 780M.



Wire brush, clean, and paint damaged prime-painted components with same type of shopD.

primer.

Remove and replace damaged precast structural concrete units that cannot be repaired orE.

when repairs do not comply with requirements as determined by Architect.

CLEANING3.6

Clean mortar, plaster, fireproofing, weld slag, and other deleterious material from concreteA.

surfaces and adjacent materials immediately.

Clean exposed surfaces of precast concrete units after erection and completion of jointB.

treatment to remove weld marks, other markings, dirt, and stains.

Perform cleaning procedures, if necessary, according to precast concrete fabricator's1.

written recommendations. Protect other work from staining or damage due to cleaning

operations.

Do not use cleaning materials or processes that could change the appearance of2.

exposed concrete finishes or damage adjacent materials.

END OF SECTION 034100


Summerhaven Shooting Range

Schmidt Associates, Inc. Project No. 2016-114.SSR

4/13/2018

Bidding Questions and Responses:

1. Detail 1/CS401 shows a W10x54 column, detail 2/CS401 shows HSS14x10 x1/2" columns, which is

correct?

a. Addressed in Addendum No. 1

2. The scale on CL402 appears to be 1/16" = 1'-0", not 1" = 30', please confirm.


3. What's the scope of the high-performance coatings on concrete?

a. There is no high-performance coating on concrete. All high-performance coating applies to

steel.

4. Grade at the firing line on CL402 is 100.00', on CG101, it's 91'. Please clarify.


5. Please provide a spec on the bird deterrent.

a. Section 1/CS401: The Metal Bird Deterrent to be stainless-steel metal spikes as shown on

the section glued to the top of the beam bottom flange, both sides with minimum 4” tall

spikes.

6. Size of the base plate in detail 2/CS401 doesn't match the size shown on 1/CS401 and

1/CS402. Which is correct?

a. Section 1/CS401: Revise base plate size to be 1 ½”x1’-6”x1’-10” as shown on detail 2/CS401.

7. Detail 4/CS401 calls for "3 1/8" x 15" treated laminated wood member". Can this be built up using

two layers of 2x pressure treated (2x6 plus 2x10 = 14.75" or is this a pressure treated PSL

product? Closest size is 3 1/2" x 16". Or something else?

a. Detail 4/CS401: Treated wood member to be a single solid piece of the size shown in detail

or a larger size used and cut to the 3 1/8”x15” dimension.

8. Elevation 1C/CL402 shows 4 precast panels at the berm, CS201 only shows 3 panels. Which is

correct?

a. There should be 4 precast panels in each bay at the berm as shown on Elevation 1C/CL402.

9. Section 3A/CL403 shows a concrete slab and concrete fill around the columns. The site layout plan

calls for asphalt paving in this area. Which is correct?


10. Do you have a spec section for the precast concrete?


11. Can you send a list of the pre-bid meeting attendees please?

a. Provided in Addendum No. 1

12. The Summerhaven specifications call for western red cedar which is unusual for this area and more

costly than northern white cedar. Can northern white cedar be used?

a. The design for this will remain as indicated.

13. Sheet cu101 storm drainage pipes show 12"x4" tees on 15" line?


14. Can drainage pipes be HDPE NDS vs DR 35 PVC on trunk lines?

a. No, bid as indicated/specified.

15. Can inlet to pond be HDPE vs concrete?

a. No, bid as indicated/specified.

16. Division 31 Section 313111 1.1.A.5 states “Staging of screened soils and oversized materials for

stabilization and/or beneficial reuse on site”.

a. See item 18 below.

17. Division 31 Section 313111 Screening E. state “During the screening process, staged piles will be

used to temporarily store the materials excavated from the site. Staged piles will remain within lead-

impacted areas of the range to minimize potential cross contamination to other areas. Contractor

shall establish individual staged piles of approximately 250 cubic yards. Staging piles will be classified

as un-treated soil material, treated soil material, or debris…”

a. See item 18 below.

18. Please clarify whether completion of soil screening meets the beneficial re-use criteria or whether

chemical stabilization such as ECOBOND® lead stabilization treatment will also be required? If

stabilization is required, what is the criteria for stabilization (e.g. < RCRA 5.0 mg/L TCLP)?

a. There is no soil stabilization requirement for this Project. Delete references from the

Documents for this work.

19. Sheet cl 101 layout note #1 and plan layout shows regular and light duty pavements, with no

separation of light or regular areas. which applies to these areas?

a. The differentiation of regular vs. light duty asphalt pavement is indicated with different

hatch patterns - see Layout Legend, top right of CL101. Light is solid grey and regular is grey

with diagonal dash overlay. In narrative form: regular duty should be installed in areas

subject to regular vehicular traffic (including parking lot pavement alternate), and light duty

should be installed in areas subject to pedestrian traffic.

20. Are all of the posts for the 6' and 3' H chain-link fence set in concrete? I see nothing on the drawings

save for Section 323113 which describes post setting in concrete but does not delineate between

line or terminal posts. I would assume that the 3' chain-link fence could be and would be simply

driven.

a. Set all posts for 6’ high CLF fence in concrete. Set all posts for 6’ high wood fence in

concrete. Set gate and corner posts for 3’ high CLF in concrete, line posts may be driven. All

posts for woven wire fence can be driven.