The final project report prepared by this author aims to design the upper structure of
the building, the lower structure of the building and time cost management of the Public
Library Building with reinforced concrete that can withstand gravity loads and earthquake
loads.
The design of this 3-storey Public Library uses the Special Moment Bearing Frame
System (SPRMK), with building risk category II and seismic design D. The structural
elements designed in this report start from slabs, beams, columns, stairs and foundations,
plus time cost management. . The concrete used has fc' = 35 Mpa, and steel reinforcement
BJ 37 which has fy = 240 Mpa. The building design follows the Minimum Loading
Reference for Buildings and Other Structures in SNI 1727:2020, Building Design
Procedures for Concrete Structures in SNI 2847:2019, Specifications for Structural Steel
Buildings in SNI 1729:2020 and Procedure for Planning Steel Structure for Buildings in
SNI 03-1729-2002. Auxiliary software used in the design of building structures using
ETABS, AutoCAD and Microsoft Project.
The design process begins with calculating the gravity load, starting from Dead Load
which means the weight of the structure itself (Slabs, Columns, Beams, Roofs, Stairs)
based on the material and its dimensions. In addition, there are additional dead loads that
come from non-structural components such as architectural and MEP which are
connected in the building structure. Examples of additional dead loads are tiled floors,
wiring, plumbing, windows, doors, door frames and window frames. And lastly, the live
load that comes from humans or goods that can move places, which according to SNI
1727:2013 the live load is 4.79 kN/m2. After calculating the gravity load, proceed with
the calculation of the earthquake load. Then proceed with the calculation of the combined
load, where according to SNI 1726:2019, the combined load is calculated by the formula
1.2DL + 1.6LL, and specifically for the roof there is an additional wind load of 0.5WL.
The thickness of the plate used from plate 1 to plate 8 is 120 mm. Plate 2 is a two-way
plate, while the other plate is a one-way plate. The beams used have dimensions of 6000
x 500 x 250 mm3. For support and span, 300 x 150 mm and 500 x 500 for sloof beams.
The upper and lower supports use 4D-22, the middle support reinforcement uses 2D-22.
Top and bottom field reinforcement using 3D-22, and midfield reinforcement using 2D�22. For support stirrups reinforcement using 2D10-40 and field stirrups reinforcement
using 2D10-80. Dimensions Column used is 500 x 500 mm2, with 12D-22 longitudinal
reinforcement, transverse support reinforcement on the weak axis 6D10-120 and on the
strong axis 6D10-120. Transverse field reinforcement on the weak axis 2D10-130 and on
the strong axis 2D10-130. In stairs, the main reinforcement used is D13-250 and the
shrinkage reinforcement is used D8-250. The foundation used is bore pile with diameter
of 40 cm using 10D22-200 and 22D22-200 reinforcement.