Rockfall event is common on rocky terrain, and it threatens people. Recent advances in remote sensing technologies allow us to model the terrain with high accuracy and resolution. In this study, we show the application of modeling a rockfall site in three-dimensional (3D) using an unmanned aerial vehicle. The acquisition of information about discontinuities in the rock masses using 3D point clouds is vital to characterize rockfall dynamics. We obtained 3D spatial information and point clouds of a rocky slope from acquired images. We extracted 10 discontinuity sets from the 3D model as they have significant effects on the failure mechanism. Details in mapping discontinuities have improved significantly with the help of point clouds. The results are beneficial for modeling the terrain of inaccessible areas with high resolution and obtaining information from those areas. This paper shows how can point cloud analysis be applied to characterize discontinuity sets.

Detection of material degradation of urban facades constitutes a preliminary activity for the preparation of any restoration response project. The traditional method for fixation relies on mechanical contact means and requires a great time effort to obtain a few preliminary points. In addition, the size of buildings and historical places make it difficult to examine the types of material deterioration, and on-site visual analyzes and current inspections by experts can also lead to human-induced errors. The development of methods based on UAV photogrammetry in order to reduce the labor force and margin of error in solving this situation brings great convenience for the detection of material deterioration in historical areas. The aim of the study carried out in this context is to document the material problems of "Sarışıh Han", a historical masonry building located in the Tarsus district of Mersin, which is of great importance for its continuity. Contributing to the documentation, detection and repair of financial problems for the preservation of the cultural heritage of the region and thus the sustainable management of the structures in the geographical region. In this context, material problems in the structure were documented using UAV photogrammetry method. In the study, the use of UAV photogrammetry to support the constraints of material deteriorations allows for more detailed results in façade analysis of material deteriorations, leading to simplification of manual and direct search procedures.

Compression and swelling index parameters, obtained from consolidation test, are used to calculate settlement for normally and over-consolidated soils respectively. When the conditions are not suitable to perform that test, various alternative methods are investigated to get those parameters without carrying out the consolidation test. In this study, a data set including 18 marine and 40 terrestrial undisturbed Quaternary sediments was taken from southern parts of Mersin City, Turkey. Parameters obtained from consolidation test and index tests were correlated by applying simple and multiple regression analyses. The initial void ratio is the main determiner for estimating both the compression and swelling index parameters. Although attempts have been made to correlate parameters with wide distribution of samples, there is no study done with narrow range. The database was divided to subgroups according to the Plasticity chart to obtain more reliable equations. To test the significance of regression analyses, T and F-tests were done. With this study, statistically significant new equations with very high correlation coefficients are proposed.

Abandoned quarries are valuable as a tourism element, as they exhibit the building material of the buildings built in the geographical area they are located in as historical objects. However, in order to determine how the quarries can be used for tourism purposes, it is necessary to determine the constraints on the choice of solution in spatial arrangements. The aim of this study is to investigate how the ancient limestone quarry of Mardin, which is a natural and cultural geological heritage, can be used for tourism and to develop suggestions. Within the scope of the study, in order to examine the possibilities of how an idle quarry located in Mardin province in Turkey can be used for tourism, the constraints in the selection of the post-use solution will be determined. In order to determine whether the Mardin quarry is accessible and safe to visit, various field studies were carried out in the study area, laboratory experiments and analyses. The caves were scanned with a 3D laser scanner, and its plans and sections were obtained. The findings were evaluated and suggestions were developed for the use of the ancient limestone quarry for tourism.

The Mor Yakup Church, located in the Nusaybin District of Mardin, is known as the world’s first educational university in history and represents one of the oldest Christian medieval monuments. In this study, it is aimed to determine the factors of the strength problems of the structure by investigating the characterization of building materials and what kind of factors affect the material behavior with various observational and experimental methods. It was determined that the main deterioration types in the materials of the building were erosion, fractures, loss of parts and the dissolve of the joint mortars between the masonry work on the facades. Since the materials used in the construction of the building are unable in terms of physico-mechanics, it has been determined that the severe continental climate conditions prevailing in the region easily cause such physical deterioration on the construction materials. In addition, the presence of clays in the conventional mortar used in the building has been defined as an internal problem that causes the material to get tired with the osmotic pressure it creates by absorbing water. A very high rate of salinization was detected in the building materials of the building and it was observed that this salting was caused by the acid effect caused by air pollution and the portland cement used in the previous repairs in the building. Finally, this study presents restoration recommendations to repair the material deterioration in the building and to prevent its occurrence in the future.

Diyarbakır’ın Silvan İlçesi, geleneksel kent kültürünün soyut ve somut unsurlarını barındıran bir yerleşimdir. 1990 yılında Silvan surları koruma alanı oluşturulmasına rağmen, Silvan koruma amaçlı imar planı hala yapılmamıştır. Sur içinin sit alanı ilan edilmemesi ve tescil işlemlerinin çok geç başlaması; birçok evin yıkılmasına, niteliksiz eklerin yapılmasına hatta betonarme yapılaşmaya neden olmuş ve insan etkileri ile oluşan bilinçsiz müdahale geleneksel yapıların yıpranmasını hızlandırmıştır. Bu çalışmanın amacı yersel lazer taramadan çeşitli tekniklerle elde edilen verileri yerinde incelemeden elde edilen verilerle birleştirerek geleneksel Silvan evlerinin özelliklerini yansıtan Silvan Konağı’na dair malzeme bozulmalarını tespit etmek ve belgelemektir. Yapının korunması geleneksel Silvan evleri kültürel mirasının devamlılığı noktasında önemlidir. Çalışmada gözlemsel tespit, fotoğrafla belgeleme ve yersel lazer tarama yöntemleri kullanılmıştır. Çalışma sonucunda konutta hatalı onarım ve bakımsızlık kaynaklı bozulmaların en sık rastlanan sorunlar olduğu tespit edilmiştir. Özellikle cephelerde malzeme kayıplarını onarım amaçlı yapılan bilinçsizce işlemler olan çimento esaslı harç ile müdahale yapının görsel algısını bozduğu gibi taş malzemeye de zarar verdiği görülmektedir. Çalışma sonuçları, yersel lazer tarayıcının hiçbir temas söz konusu olmaksızın malzemelerin ve nem, tuz, yosun ve liken gibi biyolojik değişiklikler malzemeleri etkileyen farklı hasar türlerinin dokümantasyonu alanında büyük faydalar gösterdiği, bu yöntemle tespitinde yüksek doğruluk ve hız kazanıldığı olgularına destek vermektedir.