CHAPTER I

INTRODUCTION

I.1 Project Background

Since the hospitality sector increases, many company developers have

tried to develop their property in order to attract people to come to their hotel. One

of the new companies in the hospitality industry in Solo is Konimex group. After

considerable success in the pharmaceutical industry, the company is starting to

develop its business in hospitality sectors, including a new hotel named Solo

Hotel which has 27 floors and 2 basements at the corner of Faroka junction, Jajar,

Solo. The planning and design of this building has aimed at giving a new

alternative for domestic and international visitors who want to use lodging service

in Solo.

Solo Hotel by Konimex Group has a unique thing that is not as general as

the other hotel in Solo, in addition this hotel is planned to be the tallest one in

Solo city. The concept of this building will apply green building concept and this

prestigious project will take the total time for 30 months, while the hotel

operations can be done in 2015. The hotel will have 252 rooms and units

supported by some lifestyle services such as a spa, fitness center, swimming pool

up to the roof garden.

I.2 The Objective of Project

This new building has several purposes and benefits for the owner i.e.

a. To fulfill the requirement of ballroom for international meetings.

b. To fulfill the market demand which has environmentally friendly design but

did not leave the sophistication impression on it.

c. To build a new division in the hotel industry in their company.

d. To increase the company’s income

e. To attract more tourist to visit Solo.

I.3 Project Location

The Solo Hotel building is located at Slamet Riyadi Street 562 - Solo,

Central Java. Geographically Solo Hotel project has the following border line:

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a. North: Marsudi Siwi Kindergarten

b. South: Police Station Faroka

c. West: Jajar Mosque

d. East: Hyundai Car Showroom

For the more obvious, the location can be seen on a map below:

Figure I.1. Project Map Location

I.4 Funding Source and Project Cost

The Solo Hotel project has a budget Rp 200.000.000.000,00 that funded

by Konimex Group.

A. Project

1. General Data Project

General data project as follow:

a. Project name : Solo Hotel Project

b. Project location : Slamet Riyadi Street 562 - Solo, Central

Java

c. Building Function : Lodging/Hospitality

d. Total project cost : Rp 200.000.000.000,00

e. Owner : PT. Catur Putra Jati (by Konimex Group)

f. Design consultant : PT. Davy Sukamta Konsultan

g. Contractor : PT. Caisson Dimensi

h. Construction management consultant : PT. Cipta Prima Sejahtera

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i. Electrical consultant : PT. Duta Cermat Mandiri

j. Landscape consultant : PT. Duta Cermat Mandiri

k. Type of Contract : build and design

l. Mechanical consultant : Makesthi Enggal Engineering

m. Total activity duration : 30 month

2. Technical Data Project

Solo Hotel Project consists of:

a. Building size : 12.156 m2

b. Number of floors : 2 basements and 27 floors

c. Building Height : 124 m

The structure construction of Solo Hotel Project consist of two parts,

i.e. sub-structure and upper structure.

a. Sub-structure

Sub-structure is part of the building which is located on the lower ground floor.

The structure includes bored pile foundation, pile cap, elevator pit.

1. Bored Pile Foundation

Bored pile1 is another type of reinforced concrete pile, which is

used to support high building producing heavy vertical loads. Bored pile is

a cast-in-place concrete pile where the bored piles have to be cast on the

construction site, while other concrete piles like Spun Pile and Reinforced

Concrete Square Pile are precast concrete piles. Bored piling is cast by

using bored piling machine which has specially designed drilling tools,

buckets and grabs, it’s used to remove the soil and rock. Normally, it can

be drilling into 50 meters depth of soil. The advantage of bored piling is

because the drilling method produces little vibration and lower noise level.

Bored piling is popular to be used in construction as a foundation especially

for bridge work and tall building as well. Bored piling work has to be done

by specialist bored piling contractor, normal piling contractor can’t be

1 Bored Pile Foundation, available from http://pile-driving.com/what-is-bored-piles/html, on October 5th 2013 at 13.14 PM.

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done without experience and knowledge about  bored piles, see in the

Figure I.1.

Figure I.2. Procedure for bored pile foundation constructionSource : http:// www.icac.org.hk/

2. Pile cap

  Pile cap is a thick concrete mat that rests on concrete or timber

piles that have been driven into soft or unstable ground to provide a

suitable stable foundation. It usually forms part of the foundation of a

building, typically a multi-story building, structure or support base for

heavy equipment. The cast concrete pile cap distributes the load of the

building into the piles2. 

Figure I.3. Pile cap position

Source : http://www.revitcity.com/3. Lift Pit

There are times in the design of the building, no elevator system is

above ground. In general, the elevator pit under the ground needs

2 Pile Cap Foundation, available from http://en.wikipedia.org/wiki/Pile_cap/html, on October 5th 2013 at 13.34 PM.

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waterproof. But for this case are above the pit floor is occupied or so-called

“Lift pit”. In its design, “Lift pit” require special specifications. On the

general design of the lift, pit just below the ground, so it is often unnoticed

reaction barrier. But the lift pit, the buffer should be able to support the

weight of its own, even if falling counterweight.

Figure I.4. Pit lift installationSource : http://walkercontractinggroup.biz/

b. Upper Structure

Upper structure is the part that is located above the ground floor, includes tie

beams, columns, beams, floor plates, stairs, and roof structure.

1. Columns

Columns are elements that carry only axial force - compression - or

both axial force and bending (which is technically called a beam-column but

practically, just a column). The design of a column must check the axial

capacity of the element, and the buckling capacity3.

2. Beam

A beam may be defined as an element in which one dimension is

much greater than the other two and the applied loads are usually normal to the

3 Structural Engineering, available from http://en.wikipedia.org/wiki/Structural_Engineering/html, on October 5th 2013 at 13.59 PM.

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main axis of the element. Beams and columns are called line elements and are

often represented by simple lines in structural modeling3.

3. Floor Slab

Floor slab is part of a building located in a horizontal position held by

beams and columns which is a media that serves as the room itself.

4. Roof Structure

The roof structure is part of the building that restrain /spread the

loads from the roof.

Figure I.5. Upper structure Source : http://communities.bentley.com/

B. Scope of Work

In the Solo Hotel project there are many kind of the work such as:

1. Preparation Work

1. Cleaning Field

2. Measurement and installation Bouwplank

3. Fence installation project

4. Making the project's gates

5. Making guardhouse for security

Beam

Column

Floor Slab

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6. Making material warehouse

7. Making of iron waste

8. Excavation

9. Water supply work

10. Electricity supply

11. Making office building

2. Structural Work

a. Soil Work

a) Soil excavation outside project location

b) Foundation work

c) Filling and cutting soil

b. Concrete Work

a) Sewage Treatment Plan (STP) work

b) Pile cap work

c) Tie beam work

d) Pit lift work

e) Floor slab work

f) Stair work

g) Column work

h) Beam work

3. Architectural Work

a. Pair and partition walls work

b. Wall finishing work

c. Door and window work

d. Plafond work

e. Floor work

f. Railing work

g. Sanitary work

h. Roof work

i. Painting work

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The scope of the field works discussed in this report does not cover the

entire project work. Observed during the practical work is only foundation work

and it is started on March 20, 2013 until June 20, 2013 i.e.

a. bored pile work

b. loading test work

c. sonic test work

C. Data Collection Method

Data obtained in this report comes from some sources which are:

a. Direct observation in the field.

b. Interviews with the employees, field supervisor and builder.

c. Data from construction management consultant and contractor.

d. Some literatures as comparative material.

e. Taking a picture from the project directly.