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    The Aswân Obelisk: With some remarks on the Ancient Engineering
    The Aswân Obelisk: With some remarks on the Ancient Engineering
    The Aswân Obelisk: With some remarks on the Ancient Engineering
    Ebook130 pages1 hour

    The Aswân Obelisk: With some remarks on the Ancient Engineering

    By Reginald Engelbach

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    "The Aswân Obelisk" by Reginald Engelbach. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
    LanguageEnglish
    PublisherGood Press
    Release dateDec 3, 2019
    ISBN4057664572813
    The Aswân Obelisk: With some remarks on the Ancient Engineering

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      Book preview

      The Aswân Obelisk - Reginald Engelbach

      Reginald Engelbach

      The Aswân Obelisk

      With some remarks on the Ancient Engineering

      Published by Good Press, 2022

      [email protected]

      EAN 4057664572813

      Table of Contents

      INTRODUCTION.

      CHAPTER I. DESCRIPTION OF THE OBELISK.

      CHAPTER II. THE TRENCH.

      CHAPTER III. THE UPPER QUARRY-FACE.

      CHAPTER IV. EXTRACTION OF OBELISK FROM QUARRY.

      CHAPTER V. TRANSPORT OF OBELISKS.

      CHAPTER VI. ERECTION OF OBELISKS.

      CHAPTER VII. MISCELLANEOUS OBJECTS AND CONCLUSION.

      CHAPTER VIII. BIBLIOGRAPHY.

      INDEX.

      PUBLICATIONS DU SERVICE DES ANTIQUITÉS DE L’ÉGYPTE (Suite) .

      INTRODUCTION.

      Table of Contents

      (1) The unfinished obelisk of Aswân lies in a quarry on the south-east side of the mediæval Arab cemetery, being about twenty minutes walk from the Cataract Hotel. It is approached by a small valley leading up south-eastwards from the track of the old Barrage railway.

      Up to the time of the visit of King Fuad—then Sultan—in the winter of 1920–21, only about 22 metres of the obelisk were exposed to view, the remainder running down into a vast heap of blocks and chips. The curious trench, made round the obelisk for the purpose of detaching it from the rock, has long interested visitors, and His Majesty expressed a desire that the whole obelisk be cleared in order to obtain, if possible, new data as to ancient methods of quarrying, and to expose a unique monument.

      I wish to tender my thanks to Mr. Somers Clarke for his kindness in putting his notes on the quarrying of granite at my disposal, and for reading and criticising my MS. before sending it to press; to Prof. Flinders Petrie for reading the proofs and giving many valuable suggestions; to Mr. W. Golénischeff for the references on the Anastasi papyrus and the Hammâmât inscriptions; to Mr. D. Watt, Resident Engineer of the Aswân Barrage, for the loan of books on the properties and working of granite and of surveying instruments from the Barrage works; to the Geological and Chemical Departments (sections 13 and 44) for their report on specimens submitted to them, and to the Survey Department for taking much trouble in preparing my plans for publication.

      Mr. A. M. MacGillivray, of Aswân, took the photographs shewn on plate II and plate V, nos. 1 and 2, and has kindly permitted them to appear here.

      (2) I began the work shortly after the departure of King Fuad, and soon found that the excavation would be more extensive than I had at first supposed; the length of the obelisk had reached 36 metres by April 1921, and the chip-heap, covering the butt end of the obelisk, began to shew signs of giving way. I had made arrangements, as regards the angle of the chip-heap, supposing that the obelisk was not larger than any of the known obelisks. Thirty-six metres was a surprise, so, as Ramadan was approaching, I abandoned the work for the season and applied for a further credit to make a complete clearance. This was done in the winter of 1921–22 by Mahmûd Eff. Mohammad, Inspector of Edfù, assisted by Mustafa Eff. Hasan, ‘chef de fouilles’ of the same district. I visited the site from time to time whenever my {2} other work permitted, but it was not till the end of the tourist season that I had sufficient time to study the obelisk.

      During the removal of the chip-heap, we found some hundreds of large granite blocks thrown from a quarry above on to the obelisk; these had to be cut into two, and sometimes into four, before our workmen could handle them. At first we borrowed men from the Selugia quarries, but afterwards we employed local stonemasons, who proved more satisfactory, as they did not all want to be raises.

      The total cost of the clearance was L. E. 75.

      A word of explanation is, perhaps, needed on the system of weights and measures used in this volume. It has been the custom of my Department to insist on metric scales in all plans. In the text, however, I enter somewhat deeply into the stresses and strains set up in the granite, and since nearly all the English engineering text-books and tables use the ton-inch units, I have adhered to the English system, reducing the metric linear measures to inches in my calculations. The tonne and the kilogramme-per-square-centimetre still convey little to the average English-speaking engineer, who has to have recourse to his slide-rule before being able to realise the strains set up when they are given in metric units.

      CHAPTER I. DESCRIPTION OF THE OBELISK.

      Table of Contents

      (3) The obelisk is 41.75 metres long, lying with its point 18.5 degrees north of east, and sloping down towards the butt at an angle of 11 degrees, making the base of the pyramidion 7.05 metres above the level of the butt. When complete, the obelisk would have weighed 1168 tons English.

      It is curious that, during all the years that this obelisk has been known, those who were interested in the ancient methods of quarrying have not taken the trouble to clear it. Nearly every work in which it is mentioned dismisses it in a few sentences. Both Gorringe in his Egyptian Obelisks and Bædeker give its length as 95 feet and the width at the butt as 11 feet 1.5 inches. How they arrived at the latter figure passes my understanding, as it was buried under a chip-heap to a depth of 7 metres. Perhaps the measurements were given by the original writer, whoever he may have been, not as a fact, but as a prophecy.

      The measurements of the obelisk are:

      Round the obelisk, partly separating it from the surrounding rock, is a narrow trench, whose depth averages about 2/3 that required to disengage it to a square section.

      Plate is a plan, with sections, of the obelisk to a scale of 1/100, and plate II, nos. 1 and 2, shews the obelisk viewed from the tip and butt respectively; the trench around the obelisk can be seen in plate II and in plate III, no. 1, and is discussed in chapter ii.

      As to the date of this obelisk, I have found nothing which gives any real clue to it. One Ṭ ḥ utiy, in the reign of Ḥ atshepsôwet, mentions an obelisk of 108 cubits (56.7 metres) long, which is longer than that of Aswân, even if we allow for the pedestal as having been included in the measurement (see BREASTED, Ancient Records, II, p. 156, and section 43 of this volume). Neither can the Aswân obelisk be an abortive attempt to extract the obelisk, a part of which is now at Constantinople, as the thickness of what is now the base is only 2.37 metres, whereas the Aswân obelisk measures 2.50 metres at the base of the pyramidion. Unfortunately we are compelled to leave the question of the date open, until we get some definite evidence, which may well appear when the whole quarry is completely cleared. {4}

      (4) There are abundant traces that the rock, from which the obelisk was to be extracted, was reduced to an approximately correct level by burning and wedging, the former being used wherever possible. In the excavations, a large quantity of burnt and semi-burnt mud bricks were noticed, while a considerable percentage of the chips round the obelisk and other quarries had the pinkish-brown colour and crumbling texture peculiar to burnt granite. Some large pieces of rock shew quite clearly how the burning was done; it appears that a stack of dried reeds was banked with brick, near a fissure if possible,

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