Metode Pelaksanaan Konstruksi Perkerasan Jalan (MPKPJ)

Metode Pelaksanaan Konstruksi Perkerasan Jalan (MPKPJ)Dr. Sri Atmaja P. RosyidiKode MKSemester GanjilSilabus KuliahTujuan:Mahasiswa memahami konsep perkerasan jalan (lentur maupun kaku) dengan baik dari aspek bahan dan filosofi konstruksinya.Mahasiswa memahami konsep pelaksanaan perkerasan jalan.Mahasiswa dapat mengetahui alur pelaksanaan konstruksi perkerasan jalan, beserta peralatan yang diperlukan.Mahasiswa dapat mengetahui metode ukur untuk supervisi konstruksi perkerasan jalan.Mahasiswa dapat menghitung biaya (RAB) konstruksi perkerasan jalan.Kode MKSemester GanjilSilabusPerkerasan JalanSejarahKonsep dan filosofinyaPekerjaan TanahPekerjaan Lapis FondasiPekerjaan Lapis PermukaanMetode Supervisi LapanganRABKode MKSemester GanjilKontrak BelajarTatap Muka: 12-14 kali pertemuan (100 menit).Penilaian:Tugas makalah (individu) dan presentasi : 20 %Tugas kelompok dan tutorial: 10 %Quiz dan Homeworks: 15 %Ujian : 50 %Kehadiran: 5 %

Kode MKSemester GanjilApa itu Perkerasan Jalan?Kode MKSemester Ganjil5

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Why do we need pavements and why do we make them out of HMA and PCC?Photo courtesy of Joe BlockKode MKSemester GanjilWashington Localities Collection, UW Digital Collections Dirt Road Olympic Peninsula (ca. 1924)

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Greenwood Ave. N & 85th St. N.Seattle (1904)Kode MKSemester Ganjil10

Last of the mail wagonsSeattle (1913)Kode MKSemester Ganjil11

From Clay McShanes Down the Asphalt Path, The Automobile and the American City (1994)Kode MKSemester Ganjil12From the City of Sydney's Sydney Streets exhibition (www.cityofsydney.nsw.gov.au/history/SydneyStreets) Block Boys and Horse ManurePitt St., Sydney, Australia (n.d.)

Kode MKSemester GanjilUW Digital Collections Muddy Dirt Road County Road near Index, WA (1911)

Kode MKSemester GanjilApa Tujuan dibangunnya Perkerasan Jalan ?

DC to Richmond Road in 1919 from the Asphalt InstituteKode MKSemester Ganjil15

Cobblestone RoadE Republican St., SeattleKode MKSemester Ganjil

Asahel Curtis Photo Company Collection, UW Digital Collections Plank RoadFront St., Port Angeles (1914)Kode MKSemester Ganjil16Notice the relatively high quality of this plank pavement in Port Angeles

From the City of Sydney's Sydney Streets exhibition (www.cityofsydney.nsw.gov.au/history/SydneyStreets) Woodblock PavingMacquarie St., Sydney, Australia (1925)Kode MKSemester Ganjil17City pavements required some roughness so that horses could get a foothold and traction. Wood blocks were considered ideas (for a while) because they could mimic the foothold of cobblestone or block pavement, but the wood muffled the sound of the horseshoes.

Problem was, wood deteriorated quickly (3 to 5 years for a plank pavement). Wood blocks treated with creosote to make them last upwards of 10 to 15 years (likely an exaggerated claim).

Wood blocks lost popularity in the U.S. partly because of a couple of:

Chicago Fire (1871). Streets with creosote soaked wood blocks served to spread the fire rather than serve as fire barriers.They didnt last in may places, especially Washington, D.C. (1878) lasted 5 years and city spent 20 years paying off bonds for a pavement that no longer existed.Introduction of asphalt pavements and concrete foundations.

Seattle Photograph Collection, UW Digital Collections Brick RoadJames St. from 4th Ave., Seattle (ca. 1922)

Kode MKSemester GanjilFrom the City of Sydney's Sydney Streets exhibition (www.cityofsydney.nsw.gov.au/history/SydneyStreets)

Woodblock Paving Overlaid with Hot Mix AsphaltPark St., Sydney, Australia (1929)Kode MKSemester Ganjil19Many streets were overlaid with a thin layer of sheet asphalt. Concrete was often used as a base and then surfaced with asphalt. Concrete shattered under iron horseshoe loads but could withstand more loads without deforming. Solution was to pave concrete and then surface with softer, smoother asphalt.Seattle Photograph Collection, UW Digital Collections Independent Asphalt Paving Co.Seattle (ca. 1907)

Kode MKSemester Ganjil20Paying for Roads/Pavement

Generally abutters paid for improvements. Originally they paid for roads and pavements independent of the City. Later, special assessments became common, although the only thing the City really did was provide engineering advice and coercive and borrowing power.

Often, quality of pavement was bad as abutters sought cheapest fix. Parking was sometimes included between sidewalk and abutters. People were allowed to plant there but not build (still have vestiges of this today).

Industries and Occupations Photographs, UW Digital Collections Warrenite PavementBothell Rd. (1912)

Kode MKSemester GanjilIndustries and Occupations Photographs, UW Digital Collections Warrenite PavementBothell Rd. (1912)

Kode MKSemester GanjilKondisi Perkerasan Jalan

Kode MKSemester Ganjil23A look at what pavement condition is?

Need to ask what is good, what is bad and how do we know?

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Kode MKSemester GanjilPavement Condition

From WSDOTI 90 fat driver syndromeKode MKSemester Ganjil

Perkerasan LenturStructureSurface courseBase courseSubbase courseSubgradeKode MKSemester GanjilTipe-Tipe Perkerasan Lentur

Dense-gradedOpen-gradedGap-gradedKode MKSemester GanjilKonstruksi Perkerasan Lentur

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Perkerasan KakuStructureSurface courseBase courseSubbase courseSubgradeKode MKSemester GanjilTipe Perkerasan KakuJointed Plain Concrete Pavement (JPCP)

Kode MKSemester GanjilTipe Perkerasan KakuContinuously Reinforced Concrete Pavement (CRCP)

Photo from the Concrete Reinforcing Steel InstituteKode MKSemester GanjilKonstruksi Perkerasan Kaku

SlipformFixed formKode MKSemester Ganjil33More in pavement guide interactive

Stevens Way will be fixed form starting in May