Effective with the December 2018 Letting 372 2019 Standard Spec ifications Section 621 Landmark Reference Monuments
621.1 Description
1.This section describes construct ing landmark reference monumen ts, with or without covers.
621.2 Materials
1.Furnish materials conforming to the following: Concrete ...................................................... ................................................................................................... 501 Reinforc ement ................................................. ............................................................................................ 505.2 Miscellaneous metals .......................................... ..................................................................................... 506.2.3 Brick and concrete bri ck or block masonr y ..................... ............................................................................. 519.2 Mortar ........................................................ ............................................................................................... 519.2.3 Foundation backfill ........................................... ............................................................................................ 520.2
2.Use castings used for cast iron covers conforming to 611.2 for castings.
3.Make aluminum monuments and monum ent covers from an aluminum a nd magnesium alloy as the manufacturer determines.
4.Furnish grade A, A-FA, A-S, A-T , A-IS, A-IP, or A-IT concrete conforming to 501 as modified in 716. Provide QMP for class III ancilla ry concrete as specified in 716.
621.3 Construction
621.3.1 Monument Location
1.Preserve in their original posit ion all landmarks within the c onstruction limits of the work under contract and that require reference monuments until construction and mar king of the landmark reference monuments.
2.In general, construct monuments in the landmark’s near vicinity, outside the construction limits of the work under contract, and at the exact locations, the engineer d etermines. However, if the contract specifies or the enginee r directs, construct monuments at the e xact locations of, and to replace, landmarks disturbed by the construction.
621.3.2 Placing Monuments
621.3.2 1 General
1.Under the Landmark Reference Monuments bid item, construct cas t in place or precast reinforced concrete monuments or aluminum monuments in holes excavated in the ground or, in the case of type C aluminum monuments, driven into the ground.
2.Place a department-furnished metal marker on all monuments, ex cept aluminum monuments. Place a contractor-furnished metal mark er, conforming to plan details, on all aluminum monuments.
3.Except if driving aluminum monuments, place or construct the m onuments in holes excavated in the ground. Make the holes the size and depth the plans show or as the engineer directs.
4.Remove and dispose of all surp lus excavation and materials as specified in 205.3.12.
621.3.2 2 Cast In Place Concrete Monuments
1.Fill holes with concrete and s trike off flush with the ground surface. Place a steel reinforcement rod in the concrete as the plans show . Place the metal marker while th e concrete is still plastic.
621.3.2 3 Precast Concrete and Non-Driven Aluminum Monuments
1.Level and thoroughly compact the bottom of the holes at the proper elevation. Place the monument and backfill with suitable material and thoroughly compact in 6 -inch layers.
621.3.2 4 Aluminum Drive-In Monuments
1.If the plans or the engineer specifies aluminum drive-in monum ents for use in unstable soils, drive the monuments into the ground to the minimum depth the plans show a nd drive the top flush with the surface.
2.Increase the depth as the engin eer directs to obtain a suitabl e foundation for the monument.
621.3.2 5 Monument and Cover
1.Under the Landmark Reference M onuments and Cas t Iron Covers an d Landmark Reference Monuments and Aluminum Covers bid items, construct cast in plac e or precast reinforced concrete monuments in holes excavated in the ground and covered with cas t iron covers or, if specified, aluminum monuments excavated or driven into the ground and cove red with aluminum covers.
2.Construct cast in place or preca st concrete monuments or aluminum monuments as specified in the above subsections, except as follows: Effective with the December 2018 Letting 373 2019 Standard Spec ifications - Place 12 inches of granular b ackfill to an elevation at least 3 inches below the top of concrete monuments according to plan details. - If using cast in place conc rete monuments, form at least the top 3 inches of the monument.
3.Place and adjust the cover as specified in 611.
621.3.3 Protecting and Curing
2.Protect placed concrete monuments as specified for concrete pa vement in 415.3.14
3.Protect cast in place concrete monuments from freezing for 7 d ays.
621.4 Measurement
1.The department will measure bid items under this section as ea ch individual monument acceptably completed.
621.5 Payment
1.The department will pay for measured quantities at the contrac t unit price under the following bid items: ITEM NUMBER DESCRIPTION UNIT 621.0100 Landmark Refer ence Monuments EACH 621.1100 Landmark Reference Monu ments and Cast Iron Covers EACH 621.1200 Landmark Reference Monu ments and Aluminum Covers EACH
2.Payment for the Landmark Refere nce bid items is full compensat ion for excavati ng; for providing concrete; for providing aluminum monuments, including markers; for providing steel rod; for placing department-furnished markers; for providing and adjusting iron or aluminum covers; for backfilling; and for disposing of surplus materials.
3.The department will not pay for the increased depth of monumen t if the engineer directs this to obtain suitable foundation. Effective with the December 2018 Letting 374 2019 Standard Spec ifications Section 623 Dust Control Surface Treatment
623.1 Description
1.This section describes applying dust control surface treatment to aggregate bases, shoulders, and other drivable surfaces.
623.2 Materials
623.2.1 General
1.Furnish either magnesium chloride or calcium chloride in either a liquid or a solid state. Furnish stable solutions with less than 1 percent sediment falling out of solu tion below 0 F.
2.Provide a certified report o f test or analysis from the manufa cturer or supplier certifying chemical composition. The department will ac cept material based on those certifications as specified in 106.3.3 .
623.2.2 Magnesium Chloride
1.Furnish liquid solutions containing 30 percent or more magnesi um chloride by weight, less than 1 percent calcium chloride by wei ght, and less than 1 percent sod ium chloride by weight.
2.Furnish solid containing 47 percent or more magnesium chloride by weight, less than 1 percent calcium chloride by weight, and le ss than 1 percent sodium chlo ride by weight.
623.2.3 Calcium Chloride
1.Furnish liquid solutions containing 38 percent or more calcium chloride by weight, l ess than 1 percent magnesium chloride by weight, and less than 1 percent sodium ch loride by weight.
2.Furnish solid containing 77 perc ent or more calcium chloride b y weight, less than 1 percent magnesium chloride by weight, and less than 1 percent sodium ch loride by weight.
623.3 Construction
1.The contractor is responsible for dust control on the project as specified in 107.18. Treat vulnerable areas of the project as necessar y to control dust from construc tion equipment and public traffic. Consult with engineer before applying dust control chemical. Ap ply chemical treatment as the engineer directs.
2.Arrange to have available, within 24 hours of receiving notice from the engineer, a sufficient supply of dust control chemical to treat thos e areas of the project vulnerable at any time during construction. Also, provide, within the same 24 hours, sufficient spreading e quipment to apply the chemical. Provide spreading equipment capable of applying the dust control chemic al, uniformly and without runoff, over the treated surface at the s pecified application rate.
3.After shaping and compacting the surface to be treated, apply a sufficient quantity of water to penetrate at least 2 inches. After this pre-wetting and while the surface is still moist but not muddy, apply the required quantity of chem ical uniformly over that sur face at the following rate: 1. For liquids, 0.33 gallons or more/square yard. Do not excee d 0.50 gallons/square yard. 2. For solids, 1.5 pounds or more/square yard. Do not exceed 2 pounds/square yard.
4.Do not apply dust control chemical in the rain, when the offic ial weather bureau forecasts rain within 24 hours, or under other condition s that might result in a significant loss of material.
623.4 Measurement
1.The department will measure Dust C ontrol Surface Treatment by the square yard acceptably completed. The engineer may calcul ate the yardage using volume or weight and applying a conversion factor.
623.5 Payment
1.The department will pay for the measured quantity at the contr act unit price under the following bid item: ITEM NUMBER DESCRIPTION UNIT 623.0200 Dust Control Su rface Treatment SY
2.Payment for Dust Control Surfac e Treatment is full compensatio n for providing the dust control treatment and pre-wetting water.
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Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 381–382 of 601. View official source ↗