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All Journal BANGUN REKAPRIMA
Dianita Ratna Kusumastuti
Politeknik Negeri Semarang
Humanities Civil Engineering, Building, Construction & Architecture Education Engineering Other

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ANALISIS HASIL PEMBUATAN PETA KONTUR DENGAN METODE POLIGON TERTUTUP MENGGUNAKAN PROGRAM SURFER 15 DI AREA GEDUNG DIREKTORAT POLITEKNIK NEGERI SEMARANG (AREA GEDUNG DIREKTORAT - PKM - GEDUNG SC - GEDUNG KERJA SAMA POLITEKNIK NEGERI SEMARANG): ANALISIS HASIL PEMBUATAN PETA KONTUR DENGAN METODE POLIGON TERTUTUP MENGGUNAKAN PROGRAM SURFER 15 DI AREA GEDUNG DIREKTORAT POLITEKNIK NEGERI SEMARANG (AREA GEDUNG DIREKTORAT - PKM - GEDUNG SC - GEDUNG KERJA SAMA POLITEKNIK NEGERI SEMARANG) Edo Wiguna; Roselina Rahmawati; Muhammad Mukhlisin; Leily Fatmawati; Teguh Mulyo Wicaksono; Lely Angraeni Wijaya; Dianita Ratna Kusumastuti; Risman
Bangun Rekaprima Vol. 12 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v12i1.7508

Abstract

This study aims to analyze the results of contour map creation using the closed polygon method through the Surfer 15 program in the area of ​​the Semarang State Polytechnic Directorate Building, which includes the area of ​​the Directorate Building - PKM - SC Building - Cooperation Building. Contour map creation was carried out to determine the topographic conditions and characteristics of the land slope in the area, which affect the planning and development of campus infrastructure. The methods used in this study include collecting coordinate and elevation data in the field, data processing using the closed polygon method to obtain high accuracy in positioning, and land surface modeling with Surfer 15 software. The results of data processing are presented in the form of contour maps and cross-sections and longitudinal sections, which are then analyzed to determine the level of land slope in each measurement segment. From the analysis results, it was found that the topography in the section of the Directorate Building - PKM - SC Building - Cooperation Building showed significant variations in height. Based on the measurement results, the slope of the land in the cross section A–A (Directorate–PKM) is 5.12%, section B–B (Directorate–PKM) is 3.59%, section C–C (Directorate–SC Building) is 7.94%, and the longitudinal section of the Tennis Court–Workshop Building has a slope of 2.44%. These values ​​indicate that the research area has varying elevation differences, with a tendency of gentle to moderate slopes. Overall, the results of this study indicate that the closed polygon method and modeling with Surfer 15 are able to provide an accurate and detailed topographical picture of the land conditions in the Semarang State Polytechnic environment. This land slope information can be used to support spatial planning, drainage, and the development of more efficient and sustainable campus facilities.
PENERAPAN SISTEM BASIS DATA DALAM PENGELOLAAN ANGGARAN PEMELIHARAAN JALAN DI KOTA SEMARANG: PENERAPAN SISTEM BASIS DATA DALAM PENGELOLAAN ANGGARAN PEMELIHARAAN JALAN DI KOTA SEMARANG Rendy Dwi Pangesti; Dianita Ratna Kusumastuti; Baiq Heny Sulistiawati; Rifqi Aulia Abdillah; Delila Jelita Ayu; Belifa Rahma Putri
Bangun Rekaprima Vol. 11 No. 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i2.7382

Abstract

Improperly managed road conditions have led to increased maintenance costs and a decline in transportation service quality in Semarang City. Inefficiencies in road maintenance budget managementee often occur due to limited data availability and the lack of an integrated system. This study aims to implement a database system for managing road maintenance budgets using the Provincial Kabupaten Road Management System (PKRMS) developed with Microsoft Access. The research methodology involves the collection of primary data through field surveys and road condition inventories, as well as secondary data obtained from relevant government agencies. The collected data were processed within the PKRMS framework to generate cost estimates for maintenance activities categorized as routine maintenance, periodic maintenance, rehabilitation, and road widening. The analysis results show that road segments with severe damage require the highest budget allocation, particularly for rehabilitation work, whereas roads in good condition only require routine maintenance with relatively lower costs. The implementation of this database system has proven effective in improving efficiency, accuracy, and transparency in the planning and decision-making process for road maintenance budget allocation in Semarang City.
PENGARUH PENAMBAHAN LIMBAH KAYU TERHADAP KARAKTERISTIK FISIK DAN MEKANIK MORTAR SEBAGAI MATERIAL KONSTRUKSI BERKELANJUTAN: PENGARUH PENAMBAHAN LIMBAH KAYU TERHADAP KARAKTERISTIK FISIK DAN MEKANIK MORTAR SEBAGAI MATERIAL KONSTRUKSI BERKELANJUTAN Nor Puji Lestari; Vemi Widoanindyawati; Dianita Ratna Kusumastuti; Triwardaya; Marsudi
Bangun Rekaprima Vol. 12 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v12i1.7947

Abstract

The utilization of wood waste as an additive in mortar has attracted increasing attention as an environmentally friendly approach to reducing industrial waste while promoting sustainable construction materials. This study aimed to evaluate the effect of wood waste addition on the physical and mechanical properties of mortar, particularly its early-age compressive strength. Wood waste was incorporated into the mortar mixture at proportions of 0% (control), 10%, and 15% by weight of fine aggregate. The tests included measurements of mass, density, and compressive strength of cube mortar specimens at the age of 3 days. The 3-day testing period was selected to evaluate the early-age characteristics of the mortar as an indicator of its initial physical and mechanical performance. The results revealed that increasing the wood waste content reduced the mass, density, and compressive strength of the mortar. The control mortar achieved an average compressive strength of 1.07 N/mm², whereas the incorporation of 10% and 15% wood waste resulted in strength reductions of approximately 31% and 66%, respectively. This reduction was mainly attributed to the low density, porous structure, and hygroscopic nature of wood waste, which increased mortar porosity, reduced the effective water available for cement hydration, and weakened the interfacial transition zone between the cement paste and wood particles. At higher wood waste contents, several specimens experienced premature failure during the compression test, indicating reduced structural integrity. Despite the reduction in compressive strength, the incorporation of wood waste decreased the density of the mortar, indicating its potential for producing lightweight mortar. Therefore, wood-waste mortar is more suitable for non-structural applications, such as masonry and plastering, while simultaneously supporting sustainable construction through the beneficial utilization of industrial wood waste
Co-Authors Baiq Heny Sulistiawati Belifa Rahma Putri Delila Jelita Ayu Edo Wiguna Leily Fatmawati Lely Angraeni Wijaya Marsudi Muhammad Mukhlisin Nor Puji Lestari Rendy Dwi Pangesti Rifqi Aulia Abdillah Risman Roselina Rahmawati Triwardaya Vemi Widoanindyawati Wicaksono, Teguh Mulyo