Gable Frame Structure Planning Using LRFD Method In Pamekasan Factor Warehouse Project

IEEE Style in citing this article : [Heading citation] One, N. P., & Second, N. P. (Year). Article Title. Civilla : Universitas Islam Lamongan, v(n), Start page – End page. [heading citation contents] This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Allows readers to read, download, copy, distribute, print, search, or link to the full texts of its articles and allow readers to use them for any other lawful purpose. Available online at https://jurnalteknik.unisla.ac.id/index.php/CVL https://doi.org/10.30736/cvl.v2i2 ISSN (Online) 2620-7222 Ahmad Ridwan / Civilla vol 6 No 2 year 2021 ISSN (Print) 2503-2399 226 Gable Frame Structure Planning Using LRFD Method In Pamekasan Factor Warehouse Project https://doi.org/10.30736/cvl.v2i2


Introduction
Currently, the use of steel as a building construction framework has been widely used as the main material for building structures [1] [2]. Considering the use of wood, which is considered expensive compared to steel, it becomes the best alternative to building frames [3] [4].
The advantage of using steel frames for building construction is that it is easy to install, practical, strong and durable. besides steel will not be affected by extreme weather changes. Steel can be designed to be not easy to rust, mushroom [5] [6]. In addition, it can be made of steel that is waterproof, termite-resistant, not easily porous and has great yield strength [7] [8]. Steel frames are not only used for roof construction, but can also be used to build large buildings, such as factories, warehouses, construction structures, etc.
Calculation using LRFD is very important to get a structure that is stable, strong enough, serviceable, durable, and economical. A structure is said to be stable if it is not easily overturned, tilted, or displaced during the design of the building.
Other mechanical properties of structural steel for planning purposes are determined as follows (SNI 1729-2015) [9] :

Description and Technical
Planning Engineering Data 1. The span length of the factory warehouse (distance between columns) is 30 m.
2. The length of the building is 80m, the height is 5m, the angle of inclination is 20⁰ , the distance between the horses is 4m.

Trekstang
Trekstang is used to reduce the deflection of the x-axis direction (roof slope) [10], so that the force acting is the load in the x-axis direction. Working style: P ux = P u sin30º = 790,28 kg The biggest force is on the top of the handlebar (near the cam) of 790.28 kg. This style will be used in the planning of the Trestang dimension [11].
A g = 28,47 mm 2 Then the required diameter of the tension rod is: So the diameter of the handlebar used is 8 mm.

Wind Ties Calculation
The load is planned as a concentrated load at each wind bond joint as follows:

Wind Tensile Prisoner
The wind bond is assumed to be 10 mm so that the tensile resistance of the bar at yielding is: The tensile resistance of the bar at fracture is: Tensile resistance at yielding condition is less than tensile resistance under fracture condition, so Tn at yielding condition is more decisive [14][15].     The length of the bridge beam that will be reviewed is 30 meters and 80 meters.

Material Data
The steel material used in the design of this steel structure is Hot-Rolled steel (WF, C, T profiles and steel plates) with the following data:

Loading
The loads that are reviewed as design loads in the calculation of this factory warehouse structure are: Dead Load which includes the self-weight of the steel profile with a steel density (γsteel) of 7850 kg/m3 as listed in Table 3    The overall results of the calculations that have been carried out can be drawn as follows: From the results of the planning of the WF steel roof structure on the factory warehouse construction project in Pamekasan, it was obtained planning data: Gording using Profile C 125x50x40x4,5. Trekstang uses 8 mm diameter, Wind ties use 10mm diameter steel, Rafter uses WF 350x350x19x19 profile, column uses WF 350x350x19x19 profile, 8 pieces A325 bolts with 22 mm diameter, Hoist Crane Beam uses IWF Bulit-Up beam with 600x1144x18x22 profile, Base Plate uses a size of 500x500x8mm with a column of 600x600.