Propex Pyramat Series Installation And Maintenance Manual

Thank you for purchasing our PYRAMAT
(TRM) by Propex Operating Company, LLC (Propex). This document provides installation and maintenance guidelines for
PYRAMAT used as slope armoring to increase earthen slope resiliency. PYRAMAT provides permanent erosion protection
on either the flood side and/ or protected side of an earthen slope.
Temporary securing pins (pins) are used during installation to hold PYRAMAT in place. Pins also promote vegetation
establishment keeping PYRAMAT in intimate contact with the soil.
PYRAMAT is an Engineered Earth Armoring Solution
made every effort to ensure general validity, this information should not be used for a specific application without
independent professional examination and verification of its suitability, applicability, and accuracy. The information
provided herein is for general information only, and is intended to present installation guidance. Project specific contract
documents take precedence when pin placements are different than what is represented in this document. Depending
upon the critical nature of the structure to be armored, work restrictions may be in place such as limiting work based on
growing seasons, weather patterns, etc. Work should be performed under the provisions set forth for the specific project.
Propex Engineering Services is available for support during installation to consult for solving constructability issues
encountered in specific applications. Please feel free to call our techincal support hotline at (800) 621-1273.
BEFORE INSTALLATION BEGINS

Coordinate with a Propex Representative: A pre-construction meeting is suggested with the construction team and a
representative from Propex. This meeting should be scheduled by the contractor with at least a two week notice.

Gather the Tools Needed: Tools that you will need to install PYRAMAT include a pair of industrial shears to cut
PYRAMAT, tape measure, and mallet or hammer.

Determine how to Establish Vegetation: The method of vegetation establishment should be determined prior to the
start of installation. Different vegetation establishment methods require different orders of installation. Refer to
VEGETATION ESTABLISHMENT for further guidance.
SITE PREPARATION
It is recommended during all stages of site preparation that disturbed soils remain unprotected for not more than a
single day. Depending on project size this may require progressive site preparation during installation.
1. Grade and compact the area on the slope where PYRAMAT will be installed. The slope surface should be uniform
and smooth, having all rocks, clods, vegetation or other objects removed so that during PYRAMAT LAYDOWN,
PYRAMAT comes in direct, intimate contact with the slope surface.
2. Prepare the area to be armored with PYRAMAT by loosening the topsoil to promote better vegetation establishment.
This may be accomplished with a rotary tiller on slopes 3:1 or flatter. For slopes greater than 3:1, prepare topsoil in a
safe manner.
3. Excavate a Crest of Slope (COS) trench 12 in x 12 in (300 mm x 300 mm) minimum at a distance of 3 ft (900 mm)
from the crest of the slope. (Figure 1).
Propex Operating Company, LLC - 4019 Industry Drive, Chattanooga, TN 37416 - p 800 621 1273 - www.propexglobal.com
High Performance Turf Reinforcement Mat (HPTRM) or Turf Reinforcement Mat
®
TM
INSTALLATION OF PYRAMAT ON SLOPES
PYRAMAT
AND MAINTENANCE GUIDELINES
with a unique design for each specific project. While Propex has
SLOPE INSTALLATION
®