WPCF 2BJZCourier#|dOed6X@`7@HP LaserJet 4HPLAS4.PRS 4d6X@`7\Jb@#d6X@`7Oe@#X` hp x (#%'0*,.8135@8:, P age, F ooter, B , E dit. Delete the "Project Name (ftr B)" text and replace it with the name of the project (bolded) . , until you arrive at the document text.(# D.The Guide Specifications are being reviewed and revised. Your technical comments on any guide spec would be greatly appreciated. Also, any specs that are written "from scratch" that would benefit others could be sent to either Dion Dishong or Lori Quayle, RS110.(# DRAWING DATA REQUIRED: Location, size, and thickness of concrete members; and reinforcing steel size, location, and spacing. E. 2.01C: Determine locally available aggregate.(# F. 2.01D: Select appropriate yield strength and grade of reinforcing steel for your job.(# '0*((ԌG.2.02A: Insert desired compressive strength if different that than shown. Insert desired slump.(# H.2.03A: Select desired maximum aggregate size in Tables 21A and 21B. Select minimum proportions when different from that specified.(# I. 3.03A: Specify type of finish desired when different from that specified, and include sentence in brackets when applicable.(# J. 3.04A: Specify curing time.(# K.3.05A: Determine whether the Government or the Contractor is going to perform the required testing and edit accordingly.(# 4.01 and 4.02: When a "lump sum" Contract is used, delete the title "PART 4: MEASUREMENT AND PAYMENT", and both articles from this section. Measurement and payment will be addressed in Part 4 of Section 01009 General Information and Requirement, or Section 01010 Summary of Work.(# M.4.01A: When not a "lump sum" Contract, select applicable phrases; use the "no measurement" phrase when none of the Pay Items in this section are included in the Bid Schedule.(# N. 4.02A: When not a "lump sum" Contract and payment is to be made under this section, select applicable Pay Items. Do not change Pay Item number. When Government-furnished property is specified for Pay Items, the letter suffix GF will be added after the parenthesis of the item number.(# O. 4.02A: When not a "lump sum" Contract, select applicable phrases; use the "no direct payment" phrase when none of the Pay Items in this section are included in the Bid Schedule.(#  REVISIONS OF THIS SECTION: CSI format, editorial changes: 9/96 Metric: Technical Update: 9/96 POINT OF CONTACT: Mary Anne Belding Phone: (303) 2369521 0*(( / s4 #d `7#`(#LMINOR CONCRETE Project Name (ftr B)` (#T[9/96] .03306   b-SECTION 03306 0,MINOR CONCRETE PART 1: GENERAL 1.1SUMMARY(# A.Section Includes: Furnishing and placing castinplace concrete, including formwork and reinforcement.(# B.Related Sections:(# ************************************************** DELETE EITHER 01009 OR 01010. EITHER SECTION 01300 OR 01410 MUST BE USED WHEN 01010 IS USED. ************************************************** General Information and Requirements(#`(#MSection 01009 Summary of Work(#`(#MSection 01010 Government-Furnished Property(#`(#MSection 01019 Certificates of Conformance(#`(#MSection 01365 Testing Laboratory Services(#`(#MSection 01410 Clearing and Grubbing(#`(#MSection 02111 Excavating, Backfilling, and Compacting for Structures(#`(#MSection 02224 1.2SUBMITTALS(# A.General: Submittals shall be according to [Section 01009 General Information and Requirements.] [Section 01365 Certificates of Conformance.](# B.Certificates of Conformance: Submit [____] copies of written certification from the supplier of the following Contractorfurnished items to be used on this project that they conform to the requirements of this specification section.(# 1.` ` Portland Cement(#` 2.` ` Aggregate(#` 3.` ` Reinforcing Steel+(# 4.` ` Welded Wire Fabric(#` 5.` ` Isolation Joint Materials(#` 6.` ` AirEntrainmnet Admixture(#` 1.3QUALITY ASSURANCE(# A.Causes for Rejection: Concrete may be rejected for, but not limited to, the following reasons:(# 1.` ` Freezing within the first 3 days of placement(#` 2.` ` Excessive or inadequate slump(#` 3.` ` Segregation of aggregate or over-vibration resulting in excessive water in the surface of the concrete(#` H&0*s's'Ԍ4.` ` Honeycomb over 25% of the surface(#` 5.` ` Voids larger than 2 inches across(#` 6.` ` Exposed reinforcing steel(#` 7.` ` Misalignment of concrete(#` 8.` ` Substandard aggregate in the mix(#` 9.` ` Failure to cover or seal concrete during initial 7-day curing period(#` PART 2: PRODUCTS 2.1MATERIALS(# A.Cement: Portland cement, Type IIA, according to ASTM C150. The use of caked or hardened cement will not be permitted. Cement for job-mixed concrete shall be delivered to the job site in unopened sacks.(# B.Water: Potable water shall be used for mixing concrete.(# C.Aggregates: The aggregate shall be hard, durable, uncoated rock according to ASTM C 33.(# 1.` ` The coarse aggregate shall have a maximum size of 1 inch, and not over 5% passing the No. 4 sieve.(#` 2.` ` The fine aggregate shall completely pass the No. 4 sieve with no more than 5% passing the No. 100 sieve. The fine aggregate shall contain no silt, loam, clay or organic particles.(#` D.AirEntraining Admixture: ASTM 260. The amount of air shall be 4 to 6 percent when maximum aggregate size is 3/4inch, and 4.5 to 7.5 percent when maximum aggregate size is 3/8inch. A variations of plus or minus 1 percent is allowable.(# E.Reinforcing Steel: Shall have a yield point of [60] ksi, and shall be according to grade [60] of ASTM A 615. The size of the bars shall be as indicated on the drawings.(# F.Welded Wire Fabric: Electrically welded-wire fabric of cold-drawn wire of gauge and mesh size shown on the drawings, and shall be according to ASTM A 185.(# G.Isolation Joint Materials: Preformed filler strips shall be according to ASTM D 994 and shall be the full width and depth of the joint. Unless otherwise indicated, the material shall be 1/2-inch thick.(# 2.2READY-MIXED CONCRETE(# A.Requirements: Ready-mixed concrete shall be according to ASTMC94 and be designed for a 28-day compressive strength of [3000] psi, and a slump of [4] inches as determined by ASTM C 143.(#H&0*s's'Ԍ2.3ON SITE MIX(# A.Measuring Materials: Containers with definite markings to measure cement, coarse aggregate, fine aggregate, and water shall be used for each batch of concrete mixed for the job. The mix proportions shall be according to Table 2-1A. The Contractor shall proportion the batch size of the mix according to these ratios.(# .Table 2-1A H "Concrete Mix Proportions by Volume  Maximum Size !&+Fine49Coarse(# Coarse Aggregate !Cement+Aggregate9Aggregate  HWater(#  3/8-inch@ @  !1&+2 1/4491 1/2@@C  H1/2 (#  1/2-inch@ @  !1&+2 1/4492``>@@C  H1/2(#  3/4-inch@ @  !1&+2 1/4492 1/2@@C  H1/2(#  1 inch@ @  !1&+2 1/4492 3/4@@C  H1/2(#  1 1/2-inch !1&+2 1/4493``>@@C  H1/2(#  This mix assumes wet sand, which forms a ball when squeezed in the hand but leaves no noticeable moisture on the palm. The amount of water should be adjusted up or down 10% for trial batches, if the water content of the sand is more or less than that of wet sand.(# 1.` ` Materials may be weighed for trial batches and the weights converted to volumes for the job. The weights for trial batches are given in Table 2-1B.(#` .Table 2-1B N  Proportions to Make 1 Cu Ft of Concrete b-Weights in Lb Maximum Size !&Fine0Course(# Course Aggregate&Cement0Aggregate``>AggregateLWater(# 3/8-inch@ @  !&29+05349``>46@@C  HL10(# 1/2-inch@ @  !&27+04649``>55@@C  HL10(# 3/4-inch@ @  !&25+04249``>65@@C  HL10(# 1 inch@ @  !&24+03949``>70@@C  HL9(# 1 1/2-inch !&23+03849``>75@@C  HL9(# Depending on the moisture content of the fine aggregate, the water should be adjusted up to 1 lb, up or down, to obtain the desired slump.(# 2.` ` After the weights of the mix components are determined, their volumes can be determined for measuring containers used in producing the batches of concrete.(#` 3.` ` In no case shall the fine aggregate and cement comprise more than 60% by weight of the mix.(#` B.Mixing Materials: Concrete shall be machine mixed. Mixers shall be batched according to their capacity and not overloaded. Mixing ofH&0*s's' ingredients shall continue for at least 3 minutes and until a uniform color is obtained. The concrete shall be placed as soon as possible after mixing.(#  PART 3: EXECUTION 3.1PREPARATION(# A.Clearing: Shall be according to Section 02111 Clearing and Grubbing.(# B.Subbase Preparation: Subbase and earth walls to be in contact with concrete shall be undisturbed or compacted according to Section 02224 - Excavating, Backfilling, and Compacting for Structures.(# C.Form Construction: ACI 347R. Construct forms to the sizes, shapes, lines, and dimensions shown on the drawings, to obtain accurate alignment, location, grades, and level and plumb surfaces in finished structures. The Contractor shall provide construction aids and imbedded items such as anchor bolts. Fabricate forms for easy removal without hammering or prying against the concrete surfaces. Provide crush plates or wrecking plates if stripping may damage the concrete. Form oil may be applied to facilitate removal of forms. Forms and subbase shall be wet before placement of concrete.(# D.Form Inspection: Notify the Contracting Officer 24 hr in advance of concrete placement to allow for inspection of forming and placement of items to be imbedded in the concrete. Excess water shall be removed from the forms before concrete placement.(# E.Reinforcing Steel: Reinforcement, including welded wire fabric, shall be held securely in position by steel wire, mortar blocks, or metal chairs during the placement of concrete. Welded wire fabric shall be positioned at the center of the slab, shall be clear of all edges by 3 inches and shall be lapped at least 2 wire spaces at splices. Workmen are not to walk on welded wire fabric during placement of the concrete. Reinforcement shall be inspected by the Contracting Officer before concrete is placed.(# 3.2CONCRETE PLACEMENT(# A.Mix Design: Concrete shall not be placed until the mix design has been approved by the Contracting Officer.(# B.Placement and Consolidation: Concrete shall be placed in lifts with a maximum depth of 18 inches. Each lift shall be adequately vibrated, rodded, or spaded into place to fill voids. Where more than one lift is placed, a vibrator shall be used to consolidate the concrete by penetrating through the upper lift and at least 6 inches into the lower lift. Vibrators shall not be used next to the form or to moveH&0*s's' concrete. Concrete shall be deposited as nearly as practical to its final position to avoid flow causing segregation of the aggregate. Concrete shall not be dropped more than 5 feet vertically without the use of a tremie or similar device.(# C.Bonding to Existing Concrete: When a bond is desired between a fresh pour of concrete placed against concrete which has set, the surface of the in-place concrete shall be thoroughly cleaned of loose material, and the in-place concrete soaked with water. When no bond is desired, the surface of the existing concrete shall be painted with asphalt or other material to prevent bonding.(# D.Concrete Placement Under Adverse Conditions: During hot weather, refer to ACI 305R. During cold weather, refer to ACI 306R. Materials required for protection shall be on the jobsite before concrete work is started. Do not place concrete on a frozen subgrade or against surfaces having deposits of frost, snow, or ice.(# 3.3CONCRETE FINISHING(# A.Concrete Surface Finishes: The top surface of walls and exterior slabs shall be given a woodfloat finish after screeding. Concrete requiring skid-resistant finishes shall be broom-finished with horsehair or straw brooms. Interior slabs shall be given a steeltrowel finish unless otherwise indicated on the drawings. Power-trowels may be used. Brooms shall have a minimum width of 18 inches and shall be applied perpendicular to the centerline. [Joints and panel borders shall be edged with a metal tool to leave a smooth border on the concrete.](# B.Form Removal: Formwork not supporting concrete may be removed after curing at not less than 50 degrees F for 24 hours after placing the concrete, and when curing and protection procedures are followed as specified. The concrete should be sufficiently hard so as not to be damaged by form removal. (# C.Concrete Finish Patching: Immediately after form removal, remove minor bulges and projections on exposed concrete by chipping or tooling, and rub or grind the surface. Chip honeycombed or other defective areas to solid concrete, cutting edges to right angles with the surface. Brush cavities with a grout of cement and water, and point with portland cement mortar. Cure repairs the same as the concrete.(# 3.4CONCRETE CURING(# A.Application of Curing Cover: As soon as the concrete is finished or free water has disappeared from the surface, the concrete shall be kept moist. The surface may be covered with a waterproof membrane or with material that keeps the surface from drying out. Curing shallH&0*s's' continue for at least [ ] days. Alternate wetting and drying shall be avoided.(# 3.5FIELD QUALITY CONTROL(# A.Testing: [The Government will take slump tests and air content tests according to ASTM C 173 for each concrete batch. The results will be recorded and distributed.] [The Government will make arrangements for a certified independent testing laboratory to perform the required [laboratory] testing, recording, and distributing of the results.] [The Contractor shall take slump tests and air content tests according to ASTM C 173 for each concrete batch. Record and distribute the results.] [Furnish necessary equipment, labor, and materials to conduct the testing. Testing shall be conducted in the presence of the Contracting Officer.] [Arrange for a certified independent testing laboratory, according to the requirements of Section 01410 Testing Laboratory Services, to perform the required testing, recording, and distributing of the results.](# 3.6PROTECTION(# A.Requirements: During the curing period, protect concrete from load stresses, shock loads, or vibration. Protect surfaces from damage by equipment, other materials, running water, or rain.(#  PART 4: MEASUREMENT AND PAYMENT 4.1METHOD OF MEASUREMENT(# A.Units: The work described in this section will [not be measured for payment.] [be measured and paid for] [on a lump sum basis.] [by the cubic yard, based on the dimensions of the structure and the details shown on the drawings.] No extra quantity will be added for concrete placed beyond the lines and grades shown. Reinforcing steel will [be measured and paid for by the pound as computed based on the dimensions and reinforcing details shown on the drawings.] [not be paid for separately, but is a part of the payment for concrete.] Clearing and grubbing will be [paid for separately under Section 02111 - Clearing and Grubbing] [included in the bid price for other items of the Contract.](# 4.2BASIS OF PAYMENT(# A.Payment: [No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract.] [Prices and payment will be full compensation for the work described in this section. Payment will be made under:](# Pay Item@ @  ! Pay Unit(#H&0*s's'Ԍ03306(01) Minor Concrete(#p (#RLump Sum 03306(02) Minor Concrete(#p@(#PCubic Yard 03306(10) Reinforcing Steel(#p4!(#UPound 0,END OF SECTION