ETC 1250 Lesson 01a - Lesson #1a ETC1250 - Properties of...

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Unformatted text preview: Lesson #1a ETC1250 - Properties of Materials Chapter #1 - Selection of Materials - Chapter #1 Pg 1 - 7 —Chapter# 1 - Selection of Material — Pgs 1-7 Process for Large Project (Scaled but same for small) 0 Perform well over long periods - OWSerj — ee Materials selected to: — Finance Construction Loan (sells). Mortgage (owns), Taxibonds - Lowest initial cost Public 0 Lowest maintenance — cleaning, prevention, ' ArChite‘FUEnglneer — Working drawings repair or replace 7 and specifications - Include — materials and c haracteristics — inspection and testing — building codes: zoning: etc governmental ' Material Specifications — Open orCIosed (substitution or no substitution) - Performance Specifications 7 Benefit from builders experience. and new materials process for Large project Selection criteria for some (Scaled but same for small) components for a simple house: - Footing ' contraCtor I _ — Distribute the weight of the building to the soil — Bids based on time and malei’lal — Resist cracking despite uneven soil settlement — Hires SUb'wntraCtorS- e“:- — Resist corrosive attack from soil and water — ResponSibIe for safety — MSDS - Basement floor ' Inspection af'Id Testing Provide a smooth surface — Municipal Inspectors are present atthe jobsite to inspect the Resist wear work in Progress arid Perform field teStS as Part Of CWSUUCUC’” Resist cracking despite upward water pressure or uneven soil supervision settlement — Independent testing iaboratorfes report whether or not materials Keep moisture out comply with Specifications Resist corrosive attack from so” and water Selection criteria for some components for a simple house: - Basement walls — Support the rest ofthe building — Resist lateral side pressure from the earth — Keep moisture out — Resist corrosive attack from soil and water ' Other floors and ceilings Provide a smooth surface Resist wear Support furniture and people without sagging excessively or breaking Provide a satisfactory appearance Clean easily Insulate against noise transmission Specifications Material Specifications - The designer specifies exactly what materials and assemblies are to be incorporated into the project — Knows they will be satisfactory either from past experience or from investigation — Misses the opportunity of using something that is more economical or performs better Closed Material Specifications or proprietary specifications identify specific products with no allowable substitutions Open Specifications will name a proprietary product but allow substitutions. by adding the phrase "or approved equal" — The open s ecification puts the burden on the desi%er to determine if the contrac or's substitute is equal to or better than e named product New materials - Paperless Gypsum - Concrete Siding Selection criteria for some components for a simple house: Outside walls — Support floors and roof Resist lateral wind pressure Provide a satisfactory appearance inside and out Insulate against noise and heat transmission Keep moisture out Partitions — Support floors and roof — Provide a satisfactory appearance — Insulate against noise transmission Roof — Keep meisture out Support snow and other weights Resist wind pressure and wind uplift Provide a satisfactory appearance Insulate against noise and heat transmission Specifications Performance Specifications - The designer specifies performance in terms of appearance, strength, corrosion resistance: and other features Has the benefit of the builder's ancl vendor's experience in selecting the most economical materials Performance specifications may also include bonus and penalty clauses Must be very carefully written to prevent any inferior products from satisfying the specification requirements the builder's selections must be carefully investigated to be sure they are acceptable according to the specifications Assignment 0 Page 23 Review Questions 3 & first part of 6... .._Don’t research any projects! If you do not understand a question, email me at tomlinm@phcc.edu or through my.PHCC.edu ...
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This note was uploaded on 01/05/2011 for the course DRAFTING A ETC 1250 taught by Professor Tomlinson during the Spring '10 term at Pasco-Hernando Community College.

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ETC 1250 Lesson 01a - Lesson #1a ETC1250 - Properties of...

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