NCMA

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About NCMA

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  1. As with any construction material/system, there are laboratory procedures and test methods that can simulate the effects of weathering and durability - but none can predict actual service life given the highly complex and varying exposure conditions systems and materials are exposed to. Instead, these tests are intended to provide a measure of relative performance under a given set of prescribed conditions. The only true measure of durability is in-service performance. Given that there are 1000's of concrete masonry structures that have been successfully performing for over 100 years in a wide array of environmental conditions, there is little better litmus. The key to longevity is: 1) using high quality materials, 2) good design practices; 3) proper construction techniques; and 4) appropriate maintenance over the lift of the structure.
  2. 15 lb. felt signifies felt that weights 15 pounds per 100 square feet when placed on top of the sheathing of a structure. However, over time the felt has become lighter in order for manufacturers to be more cost efficient and in turn the felt is now referred to as #15 felt. #15 felt can vary in weight from 7 to 14 pounds per 100 square feet as compared to 15 lb. felt. All parties involved in the installation of sheathing wrap products must refer to their local building codes to verify which product should be purchased and installed on the structure. For a more detailed discussion on sheathing wrap products, refer to the article attached. 15 lb felt vs #15 felt (1).pdf
  3. Unfortunately, there is no 'magic' mix design to produce a given set of properties for manufactured stone. Nearly all manufactured stone is produced using lightweight aggregate to lower the weight of the installed product, however, there are slight variations in lightweight aggregate depending upon whether one is using a manufactured lightweight aggregate (expanded clay or shale for example) or a natural lightweight aggregate (such as pumice or scoria). These aggregates themselves may have varying densities and absorption characteristics that impact the properties of the finished product. Dialing in on a specific set of targeted properties includes some trial and error. Admixtures such as plasticisers will aid in not only the molding of the stone units, but removing removing voids within the stone that can lead to increased absorption. Some producers have found that in order to achieve their targeted absorption levels they need to increase the compressive strength of the mix above the minimum compressive strength requirements of ASTM C1670. That all said, ASTM C1670 does not stipulate a maximum absorption for manufactured stone units, only that it be tested for during routine quality control assessment.
  4. To give a more defined response, can you please provide more clarification on what you define as a site wall?
  5. Stacy, Thank you for your excellent question. Unfortunately, Invision Power Services has disabled the ability for members to change their display name. However, if you direct message NCMA through the messaging system with the display name you wish to be shown then we can make the changes for you. First, please click on the "message" symbol on the upper right hand corner of the website, as shown on the screen shot below. Next, please select the "Compose New" button and a dialogue window will appear for you to type in a message. Once this dialogue box opens, please enter NCMA or any of the NCMA Staff (shown here) as the recipient of the message. Once the NCMA Staff receives the message with the Display name you desire, we will make the appropriate changes behind the scenes. Thank you for bringing this to our attention and do not hesitate to reach out to us again. Sincerely, NCMA
  6. If you would like to upload a photo of a concrete masonry product, please visit the gallery page (click here) and select the "Add Images" button on the right side of the screen. Once selected, a pop up window titled "Select Category" will appear. Here the user can select which album they wish the photo(s) to be added to. If the user believes an applicable album is not available to them for their photos, please send the Administrator a message via the Support Tab (click here). After the applicable album has been selected, a check mark will appear next to the title and the "Upload Images" window will appear. In the "Upload Images" window, as shown below, the user can drag and drop the image(s) they wish to upload in the dashed area. The dashed area will become shaded when a image is in the upload zone. This shading signifies to the user that they can let go of the mouse and the image will automatically begin uploading. The window has the capability to upload multiple images at once; however, depending on the size of the images, this could take longer than uploading each image individually into the provided window. Once the appropriate images have been uploaded to the window, click on the "Continue" button located on the bottom right corner of the window. After clicking on the "Continue" button, the "Add Information" window will appear. Here the user can add a title, tag, and description for each individual image he/she uploads, as shown below via Arrows #1, #2, and #3. Additionally, the user can add copyright and credits for each individual image. The user can enter this information individually by using the buttons highlighted via Arrow #4a, However, if the uploaded images all have the same copyright and/or photographer, the user can use the buttons highlighted via Arrow #4b to save time. Once the information for the images has been properly entered, select the "Finish Editing Images" button for the images to be uploaded to the selected album. All images uploaded to the Gallery, must be reviewed by NCMA before they will be officially posted for other users to see. As shown below, a purple advisory icon will appear below the image's title. This signifies that the image is under review by NCMA and no one else can see the image. When this icon is removed, then all users have the ability to see the image.
  7. Thank you for your question. The file attachment function at the bottom of the comments text box is meant for users to upload attachments to a question or response they are posting on a given forum or sub forum. The user can upload photos through the file attachment function; however, any photo uploaded will not be uploaded to the gallery as well. For more information on how to post and respond to questions, please visit the Admin Support forum by clicking here. For more information on how to upload pictures to the gallery, please click here.
  8. The user's ranking is based on the number of questions a user posts and/or replies to as a member of the web site. In order to reach the "Member" ranking, a user must post or reply to (or any combination there of) ten (10) questions. Once the "Member" ranking is achieved, a user can then achieve an "Advanced Member" ranking by posting or replying to (or any combination there of) twenty (20) additional questions.
  9. The user has the option to follow a forum, a sub forum, or even a specific question at their discretion. On any page of the aforementioned three, there is a “Follow” button located on the screen, typically on the right side of the screen. Simply click the button and a drop down menu will appear. In addition, if you wish to see who else is following this item, the user can click on the number in the box to the right of the “Follow” button and a pop up menu will appear on the screen with a list of all of the users following the item. In this drop down menu, the user can select how frequently they wish to be notified about the topic/forum they are following. It is important to note that a user can only follow an item if they are signed into the forum. The user also has the ability to determine how they are notified for certain events by visiting the Notification Settings located under the Account Settings. Here the user can select additional ways they can follow items such as enabling the function to automatically follow anything the user posts or replies to as well as the user can determine how they are notified for certain events whether it is a notification on the site each time the user logs in or an email sent to the user’s sign in email on an immediate, daily, or weekly cycle.
  10. If you believe a question is worth highlighting for other users to see, simply click on the upward pointing black arrow to the left of the user’s photo who posted the question. Negative rankings are not allowed thus the lowest a question can be rated is zero (0). On the forum or sub forum page, the question’s statistics are shown and higher ranked questions will then be highlighted for other users to see, as shown below.
  11. If you believe a response is worth highlighting for other users to see, simply click on the upward pointing arrow to the left of the user’s photo who posted the response (where the lower horizontal arrow is pointing). Unlike rating questions, negative votes are allowed; thus individual responses can be rated below zero (0). If a response is believed to be the best answer by the moderators, then a check mark logo will appear where the upper horizontal arrow is pointing. The best answer will then be moved from its current position on the page to the top of the page for all users to see immediately upon entering the given question’s page. In addition, the question will be highlighted on the forum/sub forum page as having a best answer associated with the question for other users to see.
  12. If you see a question you would like to respond to, simply click on the “Answer this question” button and provide your response in the field provided. Responses for a given question are shown in order of when they have been posted and can be rated by other users (This is discussed here). If you wish to respond to a specific response within the thread, simply click on the “Quote” button on the given response. This will insert a text box directly into the user’s response section so all users can identify what your response or question may be in reference to, if it is not directly related with the original question. Please note responses are constantly being moderated and any content deemed unsuitable will be addressed on a case by case basis.
  13. If you do not wish to visit the forum/ sub forum page directly to post a question, click on the “Create” drop down menu button located on upper right hand corner of the screen and select “Topic”. A pop up menu titled “Select Forum” will then show on your screen with a list of all of the forums currently available on the site. Once the desired forum is found, click on the title (a check mark will appear next to the selected forum title). Then click on the “Continue” button. The button will then direct you to the “Ask New Question” page for the specified forum. Here you must enter a title and question before the “Submit Question” button can be clicked. Tags (or keywords) can be added at the user’s discretion. We encourage the use of tags as it makes it easier to search for other conversations via the search bar by using the tag words in the search key. In addition to text, attachments such as pictures, word documents, excel spreadsheets, videos, etc. can be added to a question by dragging files into the highlighted box or clicking on the choose files link highlighted below. After entering the title, body, and tags (if applicable) be sure to click on the “Notify me of replies” button to receive notifications via the website and email when a response has been posted to the question. (The email notification frequency can be adjusted on a user by user basis. This is discussed here.) A check mark should appear next to the “Notify me of replies” in order to determine if it is active.
  14. Under the forums tab, select the desired forum. Once on the forum page, determine if the question to be asked should be posted on the current page or under an existing sub forum. If the question belongs on a sub forum page, then click on the title of the sub forum to be directed to that page. [Please note the following steps are exactly the same whether a question is posted on the forum page or on a sub forum page.] Once the desired page has been navigated to, click on the “Ask a question” button on the screen, as shown on the screen shot below. The button will then direct you to the “Ask New Question” page for the specified forum or sub forum. Here you must enter a title and question before the “Submit Question” button can be clicked. Tags (or keywords) can be added at the user’s discretion. We encourage the use of tags as it makes it easier to search for other conversations via the search bar by using the tag words in the search key. In addition to text, attachments such as pictures, word documents, excel spreadsheets, videos, etc. can be added to a question by dragging files into the highlighted box or clicking on the “Choose files” link highlighted below. After entering the title, body, tags (if applicable), and attachments (if applicable) be sure to click on the “Notify me of replies” button to receive notifications via the website and email when a response has been posted to the question. (The email notification frequency can be adjusted on a user by user basis. This is discussed here.) A check mark should appear next to the “Notify me of replies” in order to determine if it is active. For instructions on a shortcut to post questions, please click here.
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