Laserfiche WebLink
LR 109-2 <br /> Page 1 of 3 <br /> State of Illinois <br /> DEPARTMENT OF TRANSPORTATION <br /> Bureau of Local Roads and Streets <br /> SPECIAL PROVISION <br /> FOR <br /> BITUMINOUS MATERIALS COST ADJUSTMENT FOR LOCAL LETTINGS <br /> (RETURN FORM WITH BID) <br /> Effective: June 16,2017 <br /> Revised: <br /> ' Description. Bituminous material cost adjustments will be made to provide additional <br /> compensation to the Contractor, or credit to the project owner, for fluctuations in the cost of <br /> bituminous materials when optioned by the Contractor. The bidder shall indicate on the attached <br /> form whether or not this special provision will be part of the contract and submit the completed <br /> form with his/her bid. Failure to submit the form, or failure to fill out the form completely, shall <br /> make this contract exempt of bituminous materials cost adjustments. <br /> The adjustments shall apply to permanent and temporary hot-mix asphalt (HMA) mixtures, <br /> bituminous surface treatments (cover and seal coats), and preventative maintenance type surface <br /> treatments that are part of the original proposed construction, or added as extra work and paid for <br /> ' by agreed unit prices. The adjustments shall not apply to bituminous prime coats, tack coats, <br /> crack filling/sealing, joint filling/sealing, or extra work paid for at a lump sum price or by force <br /> account. <br /> Method of Adjustment. Bituminous materials cost adjustments will be computed as follows. <br /> CA = (BPIP- BPIF) x (%ACS / 100) x Q <br /> 1 Where: CA = Cost Adjustment, $. <br /> BPIP = Bituminous Price Index, as published by the Department of Transportation for <br /> the month the work is performed, $/ton ($/metric ton). <br /> BPIF = Bituminous Price Index, as published by the Department of Transportation for <br /> the month prior to the letting for work paid for at the contract price; or for the <br /> month the agreed unit price letter is submitted by the Contractor for extra work <br /> paid for by agreed unit price, $/ton ($/metric ton). <br /> %ACS = Percent of virgin Asphalt Cement in the Quantity being adjusted. For HMA <br /> mixtures, the % ACS will be determined from the adjusted job mix formula. For <br /> bituminous materials applied, a performance graded or cutback asphalt will be <br /> considered to be 100% ACS and undiluted emulsified asphalt will be considered <br /> to be 65% ACS. <br /> Q = Authorized construction Quantity, tons (metric tons) (see below). <br />