TY  - JOUR
T1  - Load Carrying Capacity of Timber Columns Strengthening by Steel Jacket
AU - Fatehi Makki, Ragheed AU - Aamir Mohamed, Ashraf AU - Talib Nimnim, Salah 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 18
SP  - 6747
EP  - 6752
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.6747.6752
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.6747.6752
KW  - steel jacket
KW  -strengthening
KW  -axial load
KW  -columns
KW  -Timber
KW  -ultimate load
AB  - This study aims to offer the applicable strengthening technique for axially loaded timber columns
using steel angles and battens. The columns which manufactured from timber in buildings oftentimes need
strengthening for several reasons such as shortcoming in the columns themselves, having to prop up additional
loads than those expected in the primary design or as the result of old age or occasional damage. Experimental
work is achieve to study the behavior of timber columns strengthened from outside by steel jacket under axial
loads effect. This search includes fabricate nine specimens of timber columns with the same square cross
section of 89×89 mm and height of 1000 mm. These specimens classified to four categories, the first category
(comprises one column) represents the comparative sample without any kind of reinforcing while second
category (involves three columns) strengthened by different sizes of four vertical steel angles at column corners
fastened by horizontal battens of the constant size and spacing, the study expanded to third category
(comprises three specimens) strengthened by constant sizes of four vertical steel angles at column corners
fastened by different sizes of steel plates at top and bottom of columns, the other variable was studied in the
fourth category which (involves two columns) strengthened by constant sizes of four vertical steel angles at
column corners fastened by (horizontal battens of constant sizes but different in spacing). The results indicated
that the strengthening technique of timber columns by using outside steel jacket can improve the ultimate load
by 38.7-112.9%.
ER  -