Umar Kassim
Thumbnail Image
Preferred name
Umar Kassim
Official Name
Umar, Kassim
Alternative Name
Kassim, U.
Main Affiliation
Scopus Author ID
55988013700
Researcher ID
R-6249-2019

Research Output

Filters

4
4
4
4
Reset filters

Settings
Now showing 1 - 4 of 4
  • Publication
    Analysis of Thermal Comfort Among Workshop Users: At TVET Technical Institution
    ( 2024-02-01)
    Alias N.M.
    ;
    Umar Kassim
    ;
    Sinar Arzuria Adnan
    ;
    Nur Hidayah Ahmad Zaidi
    ;
    Siti Nurul Aqmariah Mohd Kanafiah
    ;
    Yusoff M.N.
    ;
    Sk Muiz Sk Abdul Razak
    Thermal comfort is a part of indoor environmental quality that should be considered to ensure the occupants' well-being. Unconducive buildings not only bring occupants discomfort but also tend to affect health, disrupt the process of teaching and learning, and reduce work productivity. Thus, this study determines the thermal condition of existing workshop buildings used in Technical and Vocational Education and Training (TVET) implementation. ASHRAE Standard 55 (2017) is referred to in the determination of thermal comfort involving objective measurements and subjective measurements. Observation methods of environmental variables such as air temperature, radiant temperature, air velocity, relative humidity is observed. Evaluations of comfort are based on occupant surveys and environmental measurements. A total of 257 people completed a questionnaire distributed at three technical institutions in Kedah, Malaysia. According to the findings, the average thermal sensation vote is 1.85, which leads to 66.5% of respondents feeling discomfort. Meanwhile, the adaptive model analysis showed that the workshop environmental conditions were out of the comfort zone and did not comply with the ASHRAE 55 standard. Hence, the thermal discomfort factors from the occupants' perspective were identified and widely discussed. As a result, the research findings will benefit parties involved in new building construction or existing building renovations to improve indoor air quality.
  • Publication
    Hybrid System Methods in Industrialised Building Systems (IBS): A Structural Compatibility Study
    ( 2024-11-01)
    Azmin I.
    ;
    Umar Kassim
    ;
    Sinar Arzuria Adnan
    ;
    Nur Hidayah Ahmad Zaidi
    ;
    Siti Nurul Aqmariah Mohd Kanafiah
    ;
    Yusoff M.N.
    ;
    Abd Razak S.M.S.
    ;
    Ilpandari I.
    Hybrid System in Industrialised Building System (IBS) is combining IBS components with conventional method. Delay has become a familiar issue in construction field. The issues pertaining structure stability when using this combination method leads to delay while installing these two different method components. The combination also could cause a defect jointing. In Industrialised Building System (IBS), even though it is one of the technology methods that can save times, cost, and reduce labour in construction, but there still have constraints such as design issues, lack of experienced worker, and internal and external issues that can affect cost problems. In this study, the suitability structure based on combination method is investigated to discover the affected factors of suitability structure by using Hybrid System which is the aim of this study. The data analysis from quantitative survey shows that the top three affecting the building structure are: 1) weather effects with highest mean of 6.25 followed by 2) delay of jointing process at 6.03 and 3) defects from monolithic jointing at 5.93. Therefore, the amount of average data obtained shows that the most affected structure is the Hybrid System.
  • Publication
    The Characteristic and Properties Lightweight Organic Bricks from Rice Husk
    ( 2023-08-01)
    Umar Kassim
    ;
    Pin A.Y.S.
    ;
    Wan Azani Wan Mustafa
    ;
    Nor K.M.
    ;
    Yusoff M.N.
    ;
    Sohaimi N.S.
    In our cutting-edge environment, a lightweight organic brick is an optional revelation item that should be taken into consideration. The organic brick is superior to the traditional brick in terms of additional qualities. During assembly, it can reduce the exemplified energy of regular brick. Utilizing this organic brick could result in greater energy savings from a warm comfort perspective and help to protect the environment because it produces less pollution. The unused rice husks that are piling up in Perlis give rise to this item as a potential solution to the problem. In light of this idea, leftover rice husks can be used to create organic brick. In addition, Malaysia's rapid development would subsequently build the block requests. This fuels the primary objective of researching renewable and environmentally friendly alternatives to conventional brick. Since it is eco-friendly and easily obtainable in Malaysia, rice husk stands out among other optional lightweight options. By baking clay, rice husk, and cement together, lightweight organic brick is produced. The organic sample, which contains up to 80% rice husk, is added and put through an oven drying process so that it can dry entirely before the testing can begin. Because there was more rice husk in the specimen, there were more pores, which enhanced the compressive strength. As a result, the quality of the rice husk increases as more of it is added. Although the organic brick specimen doesn't meet the standard for compressive strength, it does so for low bulk density, which is much lower than the requirement for lightweight materials. It is therefore perfectly reasonable to use it as a light construction material.
      12  2
  • Publication
    Green Organic Partition Board from Waste Materials as Soundproof Material
    ( 2023-04-01)
    Umar Kassim
    ;
    Nur S.
    ;
    Wan Azani Wan Mustafa
    ;
    Yusoff M.N.
    Walls are vital in the structure, and give security to the host. Wall as part of structure in industrialised Building System (IBS). Walls can be made a plunge two bearing and non-bearing walls. Non-bearing walls are made of delicate parcel boards. Segment board ought to be, areas of strength for light have great Noise Reduction Coefficient (NRC). This' exploration will likely make another segment board from squandered material to deliver ecologically protected and less expensive board from the current board. The principal material is coconut shell and paper. Each board is made in various extents to pick the board with best NRC. Commotion impact framework chamber is utilized to test the capacity of sound proof of the new sheets. The perusing of the sound level meter was taken in various good ways from the sound source and changing the level of the sound recurrence and sound power. The outcome showed that the new parcel board which produced using 80% coconut shell, 15% concrete, 5% paper can diminish the clamor better compared to the other sheets. This board has NRC is 21%, 21%, 24%, and 12% for the different sound level tests. This can be an option IBS parcel board.
      15  1