ABSTRACT
Purpose: Widespread concerns have led to calls by industry practitioners and the academic community on the need to involve QS in construction projects. This study therefore explores the measures for enhancing QS involvement in construction projects in Nigeria. The paper also provides insight on issues and sustainable benefits of QS involvement in construction projects. Design/Methodology/Approach: The mixed-method (quantitative and qualitative) research was applied to the study. 70 questionnaires and 15 interviews from QS practicing in Nigeria formed the basis for the data. Mean item score and thematic analysis were used to analyze the data. Findings: The study reveals poor marketing of the profession, political connections, lack of public awareness on QS roles, Government policies, corrupt practices by parties’ involved and conservative attitude as major issues hindering QS involvement. The study also deduces that socio-economically and financially, QS involvement can result in cost control and management, minimization of financial risk, dispute settlement, economic growth and, transparency/accountability. Environmentally, QS involvement can boost material waste management, use of sustainable materials, mitigate environmental risk, and encourage a circular economy in Nigeria. Therefore, the author finds and recommends that government policy regulating QS involvement, professional training for QS proficiency, and research and technological innovations are measures needed to enhance QS involvement in construction projects across Nigeria. Originality: The paper provides industry and policy guidelines towards the enforcement of QS involvement by the Nigerian Government. The sustainable benefits of QS involvement proffered in this study will contribute to re-positioning the profession in Nigeria.

ABSTRACT
In 1960 Schiff published a paper which questioned to what extent the full formalism of Einstein’s General Theory of Relativity (GRT) is required in the calculation of three key experimental effects (the gravitational red shift, the deflection of light rays that pass close to the Sun, and the precession of the perihelion of Mercury’s orbit around the Sun), but rather “may be correctly inferred from weaker assumptions that are well established by other experimental evidence.” He noted that the method he employed was not capable of describing the third of the above effects, however. In the present work it will be shown that the latter deficiency has been removed by expanding his scaling procedure to cover the acceleration due to gravity g in Newton’s theory of gravitation, thus further strengthening his argument against the essentiality of GRT. In addition, the scaling procedure has been extended to include other key physical quantities such as energy, momentum and force and even the Universal Gravitation Constant G. The significance of these theoretical developments for the terrestrial experiments of Pound et al., is also discussed.