Saturday, August 13, 2016

2016 Road Projects and Monument Preservation

San Mateo County Public Works has just begun our busy time of the year for road projects. For the Surveying group this mean we've just completed our pre-construction monument preservation tasks.  2016 marks our second full construction cycle of employing some new procedures and technology for monument preservation.


The sections of proposed road work and survey monuments in the same GIS is an excellent tool for analysis and planning.
The procedure:
The Surveying group obtains the locations of road projects from the Engineering group and adds them to a web based GIS map. The GIS map now serves as a mobile map the Survey group can access in the field from any mobile device. Any monument we encounter within the proposed road project area is surveyed and the monument is added to the same GIS map.  This provides an excellent tool for analysis and planning of our monument preservation activities.

A proposed slurry seal project in El Granada and the details of a survey monument along with a photo in the GIS map.  This is an internal and external tool for everyone working on the project.

The technology:
Our team did an evaluation of best procedures for sharing monument location and descriptions.  We compared the previous method of paper maps and how stakeholders accessed them to a online GIS and well...GIS is superior in every way imaginable.  For the surveyors reading this, we still file the necessary corner records and records of survey.  This GIS is aimed at creating an easy to access system for the public, pavement and utility contractors, and any government entity that works in the roads or issues permits for road work.

GIS data collection In addition to traditional total station and GPS data collection, our team is using ArcGIS Collector to populate an ArcGIS Online web map.  ArcGIS Collector runs on any smartphone or tablet and we wrote a detailed post in October 2015 about how we collect the data.
ArcGIS Collector for smartphones

Sharing the data
As we mentioned earlier, previous monument preservation processes logged the data in paper format which was difficult for other groups to access even when scanned and shared electronically.  Often when these paper maps or scans were accessed, non-surveyor/engineer personnel struggled to interpret the location and description of the monuments and whether a proposed project would affect the monuments. This generated a bottleneck in the data flow that we were able to clear with ArcGIS Online.  ArcGIS Online allows anyone with an internet connected PC, phone, or tablet to see the monument locations in a GIS environment that can be customized to the users liking.
Users can customize the basemap of the GIS to their liking.

Users can see photographs of each monument and the description the field crew added.  The sample below is a disk in concrete 0.10 feet from the edge of the AC paving.  A total road reconstruction project would endanger this monument where a slurry seal project wouldn't.  The photo and description are key components to our analysis of monument preservation efforts needed per project.




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Monday, July 11, 2016

iPhone and iPad User Tips

On June 24th, San Mateo County's online map research GIS migrated to a new interface with a new URL. Access the new site here or paste the following URL into your browser:

http://maps.smcgov.org/GE_4_4_0_Html5Viewer_2_5_0_public/?viewer=raster

The video below highlights the iOS device access that the previous GIS didn't have and provides a couple of important tips for iPhone and iPad users.

Subscribe to our YouTube channel or this blog to be kept in the loop with changes.






Tuesday, June 28, 2016

Online Survey Research - New URL and Enhancements

On June 24th, San Mateo County's online map research GIS migrated to a new interface with a new URL. Access the new site here or paste the following URL into your browser:

http://maps.smcgov.org/GE_4_4_0_Html5Viewer_2_5_0_public/?viewer=raster

It is significantly different and we have put out some how-to videos to help with the transition.  We're certain more will follow but for now check out the playlist below.  Subscribe to our YouTube channel or this blog to be kept in the loop with changes.

Email pw-surveying@smcgov.org  with questions or for more details


How to turn layers on/off to see map extents.  How to view / download.




How to search by book and page. How to view / download.


Change the basemap of the research GIS



Friday, October 23, 2015

Survey Markers GIS - Montara Vicinity

The survey marker inventory for the Montara vicinity is nearly complete.  Surveyors and engineers planning work in the vicinity can access our GIS to check for nearby survey monuments.

The GIS can be found here or through our Surveying and Map Checking website.



Our data collection team will continue to inventory areas of unincorporated San Mateo County.  Either download the mobile app or bookmark the GIS on your browser and check back for updates.


Read how you can add survey marker locations directly to this GIS with your smartphone!

Friday, October 2, 2015

San Mateo County Survey Marker GIS Part 3 - Data Collection

This post will outline how the data in the Survey Marker GIS is collected.

The GIS can be found here or through our Surveying and Map Checking website.


ArcGIS Collector
When it became necessary to inventory the survey monuments in San Mateo County, many data collection methods were evaluated.  We needed it to be cost effective, easy to perform, and the ability to crowd source was also important.

This is where ArcGIS Collector came into the picture.  ArcGIS Collector is a mobile app that can turn an Android or iOS device into a GIS grade data collector.  The data collected automatically appears on a web-based GIS that anyone can browse.

The way this GIS works is pretty simple.  Once the Collector app is installed on the smartphone or tablet simply login, launch the map, collect data.




That how simple it is.  There is additional functionality to the mobile app which we'll try to cover in a video or live training session.

Detailed Data Collection Screen Shots
A collection of screen shots in this Google folder demonstrate the data collection function.  Open the "info" pane to see notes that describe each screenshot.


Questions or Comments
Anyone wishing to participate in crowd sourcing this GIS is encouraged to email pw-surveying@smcgov.org.

Thanks for reading our 3 part post on the San Mateo County Survey Marker GIS!