Under one roof

Application of Schmidt rebound number for estimating rock strength under specific geological conditions

A literature review revealed that most of the empirical equations introduced for determination of the uniaxial compressive strength (UCS) of rocks based on the Schmidt hammer rebound number (N) are not sufficiently reliable mostly due to the relatively low coefficient of correlations. This is attributed to the fact that in most cases one formula is used for all types of rocks, altho...

Nonlinear dynamic behavior of steel framed roof structure with self-centering members under extreme transient wind load

Collapse of roof could cause severe economic loss and poses safety risk to residents in the building. This paper presents a nonlinear dynamic analysis of steel framed roof structures with force limiting devices under combined static and transient wind loading. Two types of force limiting devices – one with selfcentering behavior and the other exhibiting bilinear-like hysteresis are examined for...

Deformation mechanism and optimum design for large cross-sectional longwall installation roadway under compound roof

Both the deformation characters and the failure mode of the large cross-sectional longwall installation roadway under compound roof are becoming an emergent issue than ever before due to the rapid development of modern mining equipment. Various engineering applications have revealed that the insufficient design and inappropriate support technology are the main reasons for the fatal accidents as...

Energy Saving due to Combination of Atriums and Green Roofs: Case of a College Dormitory under Different Climatic Conditions

In the present study, the effect of simultaneous utilizing of atrium and green roof on the energy consumption of a college dormitory has been evaluated under three different climatic conditions of Iran, including Tehran, Tabriz, and Bandar Abbas. Therefore, four different construction designs on the basis of using atrium and green roof has been considerd for a college dormitory. Results indicat...

A psychological analysis of the movie Under the Smokey Roof (2017) based on the family therapy theories

Movies are considered an effective educational resource for students, especially those who study Psychology. The purpose of this study is to analyze the movie "Under the Smokey Roof" directed by Pouran Derakhshandeh, based on the family therapy theories. This movie shows the story of a family struggling with different social and psychological issues. In this article, a descriptive-analytical me...

Four Classes of Pattern-Avoiding Permutations under one Roof: Generating Trees with Two Labels