ABSTRACTPrecast Lightweight Foam Concrete (PLFC) sandwich panel is one of the bestoptions in building industry. The applications of PLFC mostly are in high risebuilding such as flat, school building, apartment and others because the foamconcrete cannot sustain much load such as normal concrete. Due to the concept ofsustainable construction, some manufacturers at the building construction need tofind a new way of achieving the objectives and sandwich panel appear to fulfill theirneeded. This thesis is intended to study the precast concrete sandwich wall panelwhich is focused on compressive strength capacity, distribution of stress and strain ofwindow opening panel and observed failure and crack pattern. The materialproperties of lightweight foam concrete wall such as compressive strength anddensity is also tested.The dimension of panels was casted as 1000mm×1000mm×100mm and theopening at the centre with size 375mm×375mm. Experimental results of precastlightweight foam concrete (PLFC) was compared with computational results and alsoprevious experiment result.The test result showed that the density of LFC wall was 1803.8 kg/m3 – 1873.13kg/m3 and considered as low density or lightweight concrete. Its compressive strengthbased on cylinder specimen was 15.36 MPa. The panel compressive strength was 26MPa. The ultimate stress of the panel structure was about 15 MPa then starts thecrack till maximum load of 27.5 MPa before breaking.Keywords: PLFC, sandwich, panel, density, foam concrete, compressive strength.ABSTRAKPrecast Ringan Foam Concrete (PLFC) sandwich panel adalah salah satupilihan terbaik dalam industri bangunan. Aplikasi PLFC sebagian besar berada digedung bertingkat tinggi seperti flat, gedung sekolah, apartemen dan lain-lain karenabeton busa tidak dapat mempertahankan banyak beban seperti beton normal. Karenakonsep pembangunan berkelanjutan, beberapa produsen di konstruksi bangunan perlumenemukan cara baru untuk mencapai tujuan dan sandwich panel muncul untukmemenuhi kebutuhan mereka. Tesis ini dimaksudkan mempe;ajari dinding panelsandwich berbahan beton precast yang difokuskan pada kapasitas kuat tekan,distribusi tegangan regangan dari bukaan jendela panel dan pola retaknya. Sifatmaterial dari dinding LFC berupa kuat tekan dan densitas juga diuji.Dimensi panel dicetak dengan ukuran 1000mm × 1000mm × 100mm danpembukaan di tengah dengan ukuran 375mm x 375mm. Hasil penelitian dari pracetakbeton busa ringan (PLFC) dibandingkan dengan hasil perhitungan dan juga hasileksperimen sebelumnya.Hasil pengujian menunjukkan bahwa kepadatan dari dinding LFC adalah1803.8 kg/m3 1873.13 kg/m3 yang masuk dalam batas beton ringan. Kuat tekan betonringan adalah 15.36 MPa. Kuat tekan panel beton ringan adalah 26 MPa. Teganganutama dari struktur panel adalah sekitar 15 MPa kemudian mulai retak sampai bebanmaksimum 27,5 MPa sebelum runtuh.Keywords: PLFC, sandwich, panel, density, foam concrete, compressive strength.