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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
A51548 Mechanick exercises, or, The doctrine of handy-works by Joseph Moxon. Moxon, Joseph, 1627-1691. 1693 (1693) Wing M3015; ESTC R25166 173,243 357

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about 6 Inches high and 9 Inches broad But this Rule they do or should follow viz. to make all the Steps belonging to the same pair of Stairs of an equal height which to do they first consider the heighth of the Room in Feet and odd Inches if any odd be and multiply the Feet by 12 whose Product with the number of odd Inches gives the summ of the whole Heighth in Inches which summ they divide by the number of Steps they intend to have in that Heighth and the Quotient shall be the number of Inches and parts that each Step shall be high Or if they first design the Heighth of each Step in Inches they try by Arithmetick how many times the Heighth of a Step they can have out of the whole Heighth of the Story and so know the number of Steps MECHANICK EXERCISES OR The Doctrine of Handy-Works Continued in the ART of House-Carpentry STairs are either made about a Solid Newel or an Open Newel and sometimes mixt viz. with a Solid Newel for some few Steps then a straight or Foreright Ascent whith Flyers upon the side of the square Open Newel and afterwards a Solid Newel again Than reiterate c. The last viz. the Mixt Newel'd Stairs are commonly made in our Party-walled Houses in London where now Light can be placed in the Stair-Case because of the Party-walls so that there is a necessity to let in a Sky-light through the Hollow Newel But this sort of Stair Cases take up more room than those with a single solid Newel because the Stairs of a solid Newel spread only upon one small Newel as the several Foulds of the Fans Woman use spread about their Center But these because they sometimes wind and sometimes fly off from that winding take therefore the more room up in the Stair-Case The manner of projecting them is copiously taught in many Books of Architecture whether I referr you yet not to leave you wholly in the dark I shall give you a small light into it And first of the Solid Newel Winding Stairs are projected on a round Profile whose Diameter is equal to the Base the Stair-Case is to stand on suppose six foot square This Profile hath its Circumference divided into 16 equal parts The Semi-diameter of the Profile is divided into four equal parts and one of them used for the Newel and the rest for the length of the Steps if you draw Lines from the Center through every one of the equal parts into the Circumference the space between every two Lines will be the true Figure of a Winding-Step And if they were all cut out and placed one above another over the true place on the Profile round about the Newel whose Diameter is one quarter the length of a Step you would by supporting each Step with a Raiser have the modle of a true pair of Winding-Stairs See Plate 10. Fig. 2. Hollow Newel'd Stairs are made about a square Hollow Newel We will suppose the Well-hole to be eleven foot long and six foot wide and we would bring up a pair of Stairs from the first Floor eleven foot high it being intended that a Skie-light shall fall through the Hollow Newel upon the Stairs we must therefore consider the width and breadth of the Hollow Newel and in this example admit it to be two foot and a half wide and two foot broad by the width I mean the sides that range with the Front and Rear of the Building and by the breadth I mean the sides that range with the Party-walls I find by the Rule aforesaid that if I assign 18 Steps up each Step will be seven Inches and one third of an Inch high You must note that the flying off or else winding of these Steps will vary their places according as you design the first Ascent For if you make the first Ascent as you come straight out of the Street as in Plate 10. on the South side you will first ascend upon a Pitch of Flyers which Pitch making an Angle of 38 deg with the Floor with ten Steps raise you six Foot high above the Floor and bring you eight Foot towards the North end of the Well-hole by making each Step ten Inches broad But now you must leave Flyers and make four Winding Steps These Winding Steps are made about a solid Newel as hath been taught and this Newel serves also for a Post to Trim the Stair-Case too This Post stands upon the Floor and is prolonged upwards so high that Mortesses made in it may receive the Tennants of the Top and Bottom Rails of the whole Stair-case for that Floor these four Winding steps aforesaid rounding one quarter about the Newel turns your Face in your Ascent now towards the East these four steps are raised 2 foot 5 ⅓ Inches above the Flyers so that in all your Stairs are now raised 8 foot 6 ⅔ Inches Here remains now only 2 foot 5 ½ Inches to the Landing place and these take up just four Flyers which must be made as was taught before But now in your second pair of Stairs it will be proper to begin your Ascent with your Face towards the West for landing by the first pair of Stairs with your Face towards the East you turn by the side of the Rail on the second Floor from the East towards the North and at the further end of that Rail you turn your Face again from the North towards the West and begin your Ascent on the second pair of Stairs Between the Skie-light and the Ascent is a Post set upright to fasten Rails into to bound the Stair-case from the bottom of which viz. on the second Floor you trim up three Flyers and then turn off a quarter of a Circle with Winding steps then again Flyers to your designed pitch and then again another quarter of a Circle with Winding steps c. The Rail these Steps are built upon being at the beginning or bottom of the Ascent framed or otherwise fastned to the first upright Post must at its higher end be framed into the next Post also with a Bevel Tennant as you were taught to frame Quarters into one another Numb 5. § 17. Only with this difference that there you were taught to frame Square but here you must frame upon the Bevel as you were taught Numb 5. § 19. This Post aforesaid bears upon the Floor to make its Bearing the stronger and this Post must be continued to such an heighth as it may also serve to receive the Tennanted end of an upper and lower Rail framed into it And between these Bevelling Rails Bannisters make good the outside of the Stair-Case Though I have here described this Contrivance of a pair of Stairs yet do I not deliver it as the best Patern for this building or for these sorts of Stairs nor matters it to our purpose whether it be or no for as I told you before my undertaking is the Doctrine of Handy-works not Architecture but ' its