Green Open Space (RTH) is part of the open space in an urban area in the form of an area

within a certain unit area containing plants, plants, and green spaces both naturally growing and

deliberately planted to support ecological, socio-cultural, architectural, comfort, beauty benefits and

for the urban area, such as the example of Kediri City. Kediri City revitalizes its green open space in

which there is work on the food court building to support its activities. In the construction of the

food court building, there are 2 aspects of work, namely structure and architecture. The

construction of the food court building uses a reinforced concrete structure with K-250 concrete

specifications and has 2 floors, while the front side of the 2nd floor forms a sloping side above which

the landscape area is used as a playground for the people of Kediri city residents.

The construction of the food court building has aspects of reinforced concrete structure work,

in which there are several problems. The problem that occurs is that there are cracks in a reinforced

concrete structure, namely the beam structure. In a building structure, the main thing that must be

planned as carefully as possible is to avoid unwanted things. The structure is a frame or

to withstand the loads that work. Cracks arising in the medium category are about 1 mm - 2 mm

wide. The cracks are circular, with an average length of about 60 cm, and are found in several areas

that amount to about 10 points. The cracking problem will become serious if not handled properly.

The problem that occurs is the collapse of a building, which causes many losses to occur. In this case,

various studies are needed to handle it so that it becomes a sturdy and safe building (ACI Committe

224, 2007).

Various structural reinforcement methods can overcome the cracks that occur. The method of

repairing cracks can be done by means of the concept of jacketing, which is useful for preventing

cracks from arising again by enlarging the dimensions of beams and columns. The main advantage

of this system is that it increases the strength and ductility limit of concrete, and the second

examined the flexural reinforcement of reinforced concrete beams using Glass Fiber Reinforced

Polymer (GFRP), which increased beam flexural strength up to 1304.99 MPa with a reinforcement

percentage of 153%. Furthermore, Puspita et al. (2018) analyzed flexural cracking in high-strength

reinforced concrete beams repaired with epoxy injection, focusing on the injection capacity to

repair the structure of high-strength concrete beams. Wibisono (2017) added strip steel plates as

flexural reinforcement to reinforced concrete beams, which significantly improved the ability of the

beams to resist flexure. Kaontole et al. (2015) evaluated the capacity of reinforced concrete columns

reinforced with the concrete jacketing method, where this improvement increased the capacity up

to 64.25 Kn.

Based on previous studies, there are differences with the current research, which focuses on

cracked beams. In this regard, the research aims to explore repair techniques that can be used to

repair cracked beams, including selecting appropriate materials and approaches to improve the

structural integrity of the beams. In addition, the research also aims to evaluate the capability of the

applied support structure in the context of the beam cracking problem to ensure that the structure

remains safe and capable of supporting loads by applicable standards.

Framework of Thought

The framework of this research involves several stages in analyzing the problem of cracks in

the beams of the Pujasera building. Large loads such as coral, fertile soil, and grass for the

of the working load, concrete jacketing is expected to be the right solution for overcoming beam

cracks in the Pujasera building.

Project Data Information

The project data includes technical information related to location, number of floors, building

dimensions, and materials specifications. Structural materials such as K-250 quality concrete and

steel reinforcement BJTP 280 (plain) and BJTS 420 (threaded) are the main references in designing

structural reinforcement.

Structural Loads

This chart describes the steps in reinforcing the structure to overcome beam cracks. The first

step is to collect the necessary project data and model the Pujasera building structure. After

modeling, load calculations are carried out for coral, fertile soil, parks, and humans. This calculation

aims to determine the shear forces and bending moments that cause cracks.

concrete jacketing, which wraps the old structure with the new structure. This method was analyzed

using applications such as SAP2000. After the analysis, a pre-design was carried out to determine

the thickness of the beam and select a strong material for the jacketing process so that the

crackingproblem would not occur again.

Modeling of Existing Pujasera Building Structure

Modeling is done to determine the capacity of existing structures. The known capacity is the

loads that occur, whether they can be carried by the existing structure or not, and it is important to

find out which structural parts have cracks due to the inability to carry the existing load. Structural

modeling is done using the SAP2000 application. The advantage of SAP2000 is its ability to plan,

analyze, and design complex structures. In addition, this application can also produce simulations

and animations of structures that are very accurate and realistic. In modeling the existing building

structure, load data is also needed so that it must be imported to find out the maximum load that

occurs; these loads include:

a. live Load

b. dead Load

The dead loads that occur on the food court building are as follows:

Source: Spektra Indonesia Design Analysis Results.

From the data table above, it can be concluded that the loading combination can be done as

follows:

Source: Analysis Results from SAP2000.

After checking it turns out that the structure of the food court building is able to withstand the

load or force at work. In the check, there is clear information that each building structure is able to

withstand the load or capacity is met.

860 of the K1 column structure, from -11.9081 kN/m before jacketing to 15.3892 kN/m after