A well-designed engineered soil for bioretention is important as it ensures that pollutant removal requirements are met. This laboratory study investigated the nutrient efficiency of media enhanced with 10% (by volume) additives from various waste materials (cockle shell, newspaper, printed paper, coconut husk and tyre crumb) planted Red Hot Chinese Hibiscus (Hibiscus rosa-sinensis), a common landscape shrub in tropical countries. The results showed shredded newspaper demonstrated...

The current study aims to verify the existing equations for incipient motion a rigid rectangular channel. Data from experimental work on flume with two different widths, namely 0.3 and 0.6 m, were compared critical velocity value predicted by of Novak & Nalluri El-Zaemey. equation El-Zaemey performed better an average discrepancy ratio 1.06 0.87. However, as sediment deposit thickness increased, became less accurate. A plot Shields Diagram using data had shown significant effect where,...

The understanding of how the sediment deposit thickness influences incipient motion characteristic is still lacking in literature. Hence, current study aims to determine effect deposition on critical velocity for motion. An experiment was conducted a rigid boundary rectangular flume 0.6 m width with varying thickness. Findings from revealed that densimetric Froude number has logarithmic relationship both ratios ts/d and ts/y0 (ts: thickness; d: grain size; y0: normal flow depth). Multiple...

The maintenance of pavements takes considerable time and poses a significant task, especially when it comes to detecting cracks at the pixel level. Due complexity pavement conditions, such as road markings, shadows, oil stains, deep learning techniques are still challenge in automating crack detection. This paper presents novel methodology termed CrackHAM, which is an encoder-decoder network founded on U-Net architecture. primary objectives CrackHAM twofold: achieve accurate robust detection...

During the past decades, research into fluid‐controlled geodynamic processes in upper crust of Earth is put foreward regarding stress accumulation, deformation, and seismicity. In a large‐scale injection experiment at deep borehole site KTB (Kontinentale Tiefbohrung der Bundesrepublik Deutschland) Germany, more than 84.000 m 3 fresh water was injected 4000 depth over 10 months, lot geoscientific investigations were connected to this test. The pore‐pressure change MPa yielded an induced which...

AbstractThis paper highlights the results of sediment size characteristics and deposition analysis on 24 samples from urban concrete drains in Kuching City. Further sampling surrounding towns outside City Penang were done for comparison. Samples collected randomly three land-use types (residential, commercial industrial). Sieve had shown that most total (51 out 57) predominantly sand, followed by gravel; while silt clay minor components. Unimodal observed 46 11 showed bimodal...

The customary method of computing the hydrodynamic force on a pier bridge is based model tests stand-alone piers. This implicitly ignores influence deck flow pattern around exerted piers by solitary-like wave generated in hydraulic flume investigated using complete pier-deck model, which includes both and actual proportion. experimental results reveal that influenced presence deck. For configuration studied, component from pressure acting only could be increased as much 50% over for case due...

This paper presents the design of a tipping flush gate and its potential use in servicing open storm sewers terms sedimentation management. The was installed section concrete sewer located commercial area Taman Pekaka, Nibong Tebal, Penang, Malaysia. Monitoring operation performance done from 14th November 2012 to 15th March 2013 covering beginning end wet season. sediment profile inside measured after each or rainfall event. Results showed that effective reducing naturally accumulated...

Tsunamis have damaged bridges with various configurations to different extents. This paper reports an experimental investigation of the tsunami loads on two types bridge configurations, namely solid and perforated parapets. The results reveal that maximum forces acting deck 60% parapets are about 17% lower than one However, percentage force reduction is found be smaller perforation area in It also noted can substantially reduce it throughout time-history. Hence, as far horizontal concerned,...

Tsunamis have received increased worldwide awareness since their unprecedented occurrences in the Indian Ocean and Tohoku 2004 2011, respectively. In this study, impact of tsunami on a building with an elevated floor slab was investigated at reduced scale 1:100 compared that slab-on-grade building. Three nominal wave conditions were tested to study effects tsunamis each model type. The tsunami-like forces pressures measured experiment. Results showed existence significantly horizontal force...

The tsunami is one of the deadliest natural disasters, responsible for more than 260,000 deaths and billions in economic losses over last two decades. footage devastating power 2004 Indian Ocean perhaps remains vivid memory most survivors, Malaysia was countries affected by unprecedented tsunami. It first time Malaysian government had managed such a great disaster. This review, therefore, gathers relevant literature pertaining to efforts undertaken following event from Malaysia’s...

Abstract This paper highlights the review of effects concrete surface treatment and loading on structural behavior reinforced (RC) columns retrofitted with RC jackets. The aspect is assessed based roughness, use dowel bars, shear connectors, applying bonding agent between column core jacket. However, evaluated preloading history applied pattern. latest researches recommendations for jacketing are presented. It found that sand-blasting bars or connectors helps to behave monolithically....

It is common that a building experience repeated earthquakes throughout its lifetime. Such earthquake capable of creating severe damage in primary elements the due to accumulation inelastic displacement from repetition. The present study focuses on influence typical Reinforced Concrete (RC) beam-column joint, especially maximum demand and residual displacement. For this purpose, capability nonlinear modelling simulating hysteretic behaviour prototype experimental specimen first determined...

This paper highlights a preliminary study on the potential of tipping flush gate to be used in an open storm drain remove sediment. The investigation was carried out by using plasboard model installed rectangular flume. A steady flow experiment determine discharge coefficients and also outflow relationship gate. velocity produced at various distances downstream during flushing operation measured flowmeter all points higher than recommended self-cleansing design available literature....

Water resources and urban flood management require hydrologic hydraulic modeling. However, incomplete precipitation data is often the issue during hydrological modeling exercise. In this study, gene expression programming (GEP) was utilised to correlate monthly from a principal station with its neighbouring located in Alor Setar, Kedah, Malaysia. GEP an extension genetic (GP), can provide simple efficient solution. The study illustrates applications of determine most suitable rainfall...