Palembang is a lowland which is dominated by swamp areas.. The problem of flooding in this area stems from a drainage network system that is almost cut off, causing high rainfall and water not flowing properly into the river. This study aims to analyze the drainage network system’s performance based on the channel’s capacity to the channel’s condition in analyzing the hydrology using the probability distribution method. The frequency suitability test was carried out using Smirnov-Kolmogorov and Chi-Square. The results showed that the rainfall was 116.74 mm/hour and the design flood discharge (Qr) at the ten-year return period was 3.684 m3/second. The carrying capacity of the discharge channel (Qs) is smaller than the value of Qr. Indicates that the existing drainage channels cannot accommodate the flood discharge, resulting in flooding. The channel at point 4 leads to the discharge channel; the capacity value of Qs is 4.0296 m3/second, while Qr is 3.684 m3/second. The calculation results can be estimated that the channel discharge capacity is smaller than the planned flood discharge, so the drainage channel capacity cannot accommodate flood flows.

The access section to Benakat Village, Pali Regency is a special road made by the company, with the condition of the existing land being unpaved with a length of 1,375 meters and a width of 7 meters, and has severe damage triggered by vehicles with excess capacity or ODOL (Over Dimension Over Load)) that pass through that path. The purpose of this study was to determine the results of the calculation of rigid pavement thickness planning by comparing the 1993 AASHTO and 2017 MDPJ methods so that the road Sp. Doors – Sp. Benakat is able to accommodate ODOL vehicles. This study uses AASHTO 1993 and MDPJ 2017 as methods to produce rigid pavement thickness (Rigid Pavement) so that ODOL vehicles can pass. Based on the results of data analysis and calculations, the input indicators in each method are different for each method so that AASHTO 1993 produces a thickness of 35 cm, and in MDPJ it produces a thickness of 28.5 cm

ABSTRACT  A new product of lightweight concrete that has a low specific gravity that is increasingly used in the world of construction is foam concrete. In this study, testing the addition of superplasticizers to the foam concrete mixture was carried out, by analyzing the effect of adding superplasticizers as much as 0.3% of the amount of cement on the process of setting time and compressive strength of foam concrete. The purpose of the study was to determine the effect of adding superplasticizers as much as 0.3% of the amount of cement on the process setting time and compressive strength of foam concrete. In this study, the method used was an experimental method. The results showed that the addition of superplasticizers to the concrete mixture can make the cement binding time longer than without the addition of superplasticizers to the concrete mixture. While in testing the compressive strength of concrete, there is a significant increase in concrete strength in concrete variations with the addition of superplasticizers, this is because the use of added superplasticizers can reduce water use so that the cement water factor becomes lower and improves concrete quality.  Keywords: Concrete Foam, Superplasticizer, Compressive Strength   ABSTRAK  Produk baru beton ringan yang mempunyai berat jenis rendah yang semakin banyak digunakan dalam dunia konstruksi yakni beton busa. Pada penelitian ini dilakukan pengujian penambahan superplasticizer pada campuran beton busa, dengan menganalisis pengaruh penambahan superplasticizer sebanyak 0,3% dari jumlah semen terhadap proses setting time dan kuat tekan beton busa. Dengan tujuan penelitian adalah untuk mengatahui pengaruh penambahan superplasticizer sebanyak 0,3% dari jumlah semen terhadap proses setting time dan kuat tekan beton busa. Dalam penelitian ini metode yang digunakan adalah metode eksperimental. Hasil penelitian menunjukan dengan adanya penambahan superplasticizer kedalam campuran beton dapat membuat waktu ikat semen lebih lama dibandingkan tanpa penambahan superplasticizer kedalam campuran beton. Sedangkan pada pengujian kuat tekan beton terjadi peningkatan kekuatan beton secara signifikan pada variasi beton dengan penambahan superplasticizer, hal tersebut dikarenakan penggunaan bahan tambah superplasticizer dapat mengurangi pemakaian air sehingga faktor air semen menjadi lebih rendah dan meningkatkan mutu beton. Kata kunci: Beton Busa, Superplasticizer, Kuat Tekan

In the last five years, the number of accidents that have been occurred in Palembang, South Sumatra Province reached 7.016 incidents. This research aims to discover the characteristics of traffic accidents and accident-prone (black spot) locations. The characteristic of a traffic accidents will be analyzed by questionnaire, while the black spot analysis will be investigated based on the frequency (death, seriously injured), INDII Aus-Aid and AEK. The result of the components of accidents presented that the road users was the main factor of traffic accidents with around 83 %, 87% of incidents happened less than 3 (three) every month, and 47 % of the sacrifice of seriously injured, in which the highest gender victims was male (83%). The Black Spot analysis outcome at Soekarno Hatta Street located at STA 23 + 500, in which Soekarno Hatta Street experienced the most common traffic disaster with 110 of the circumstances were 31 casualty who passed away, 39 heavily wounded, and the material loss gained Rp. 10.439.901.000.

In accordance with rapid development  in Banyuasin Regency has effected the increased use of land that is built into residential areas. Land use is unwittingly can affect and disrupt the hydrological cycle which causes a negative impact on the environment. It consequenlly, it reduces soil absorption and causes  excessive surface  run off. Therefore there must be anticipatory steps to reduce rainwater runoff. Infiltration wells can be some to figure out the issue. This research aims to plan the infiltration wells design to reduce rainwater runoff and to know the capacity of drainage channel in Pusri Residence Sembawa Banyuasin. The result of data analysis shows that most of runoff  occur in drainage channel of receiver except in segment of Block A1-A2 and Block D1 - D2 and at collector channel. The largest receiver discharge (Q2) is 0.2378 on block V1 - V2. The results of the infiltration wells design is a circle with a diameter of 1 meter and a depth of 3.5 meters. The debit plan for the 2nd year return period with rain intensity 505,9905 mm / hr is 0,0296 m3 / s, while the discharge of the infiltration wells of each plot is 0,0032 m3 / dt for type 36/84. The rain water discharge of infiltration wells with a duration of 30 minutes and the number of house plots is 0.0253 m3 / s, while the discharge plan on channel A-B is 0.0296 m3 / s. After the use of infiltration wells the, remaining discharge of rain water entering on receiver channel on block A-B equal to 0,0265 m3 / s.Keywords:  Infiltration Wells, Runoff, permeability